1. The full-counterflow heat recovery device is characterized by comprising a shell extending along an axial direction, wherein a partition tube plate is arranged in the shell, the partition tube plate divides an inner cavity of the shell into a heat exchange cavity and a water inlet cavity along the axial direction, a heat exchange cylinder is arranged in the heat exchange cavity and comprises an air inlet cylinder and an inner cylinder which are hermetically connected together, the air inlet cylinder is positioned on one side of the inner cylinder, which is far away from the partition tube plate, a gas return cavity is formed between the heat exchange cylinder and the shell, and an air inlet pipe communicated with the air inlet cylinder and an air outlet communicated with the gas return cavity are arranged on the shell; the axis extends in a horizontal direction;

a water returning part is arranged in the air inlet cylinder, the water returning part comprises an inner pipe plate and an inner seal head which is hermetically arranged on the inner pipe plate, and a water returning cavity is formed between the inner pipe plate and the inner seal head;

an air inlet channel is formed at one end of the inner cylinder facing the inner pipe plate, and the inner cavity of the inner cylinder is communicated with the air inlet cylinder through the air inlet channel; one end of the inner cylinder, which faces the partition tube plate, is provided with an air outlet channel, and the inner cavity of the inner cylinder is communicated with the air return cavity through the air outlet channel;

the heat exchange cylinder is internally provided with a tube array extending along the axial direction, one end of the tube array is hermetically arranged on the inner tube plate and communicated with the water return cavity, and the other end of the tube array is hermetically arranged on the partition tube plate and communicated with the water inlet cavity; one end of the water drain pipe is hermetically arranged on the inner pipe plate and communicated with the water return cavity, and the other end of the water drain pipe hermetically penetrates through the partition pipe plate and the shell to form a refrigerant outlet; the shell is provided with a refrigerant inlet communicated with the water inlet cavity.

2. The heat recovery device of claim 1,

the inner cylinder is not connected with the water return piece, and a gap between the inner cylinder and the water return piece forms an air inlet channel; the inner cylinder is not connected with the partition tube plate, and a gap between the inner cylinder and the partition tube plate forms an air outlet channel;

in the radial direction, an annular air passage is arranged between the water return piece and the air inlet cylinder, and the air inlet passage is communicated with the air inlet pipe through the annular air passage.

3. The heat recovery device of claim 1, wherein the water returning member is connected only to the column pipe and the drain pipe.

4. The heat recovery device of claim 1, wherein at least three baffle rod groups are arranged in the inner cavity of the inner cylinder at intervals along the axial direction, each baffle rod group comprises a plurality of baffle rods, the baffle rods in the same baffle rod group are arranged in parallel and at intervals, and all the baffle rods are perpendicular to the axial direction; the central pipe and the inner cylinder are coaxially arranged, and each baffle rod group is slidably supported on the drain pipe and the inner cylinder;

viewed in the axial direction, the rods of at least one rod set intersect the rods of another rod set so that the rods form tube-through holes, through which tubes are freely passed and then connected to the inner tube plate and the partition plate.

5. The heat recovery device of claim 4,

the pipe penetrating holes are square or regular hexagon when viewed along the axis direction.

6. The heat recovery device of claim 4,

each deflection rod group comprises a positioning ring, deflection rods which are parallel to each other are fixedly arranged in the positioning ring, the positioning rings of every N deflection rod groups are connected into an installation group through connecting pieces, and N is an integer between 2 and 5.

7. The heat recovery device of claim 1,

a step part is arranged between the air inlet cylinder and the inner cylinder.

8. The heat recovery device of claim 1,

the lower side of the inner wall of the heat exchange cavity is provided with a backing plate, and the heat exchange cylinder is fixedly provided with a sliding block which can slide on the backing plate in a reciprocating manner along the axis direction.

9. The heat recovery device of claim 1, wherein the inlet pipe is adapted to be connected to a syngas reactor having a connecting pipe and a reaction gas outlet pipe, the connecting pipe fitting over the reaction gas outlet pipe;

when the gas inlet pipe is connected to the synthesis gas reactor, the connecting pipe is hermetically connected to the gas inlet pipe, the reaction gas outlet pipe is inserted into the gas inlet pipe and is hermetically connected to the gas inlet cylinder, the outer wall of the reaction gas outlet pipe is hermetically pressed against one end, facing the inner cavity of the shell, of the gas inlet pipe, a first annular cavity is formed between the reaction gas outlet pipe and the gas inlet pipe, a second annular cavity is formed between the reaction gas outlet pipe and the connecting pipe, the first annular cavity is communicated with a gas inlet cavity of the synthesis gas reactor through the second annular cavity, and the gas inlet cavity is communicated with a reaction cavity of the synthesis gas reactor;

install the protective gas inlet tube of this first annular chamber of intercommunication on this intake pipe, the protective gas can enter into first annular chamber through this protective gas inlet tube to enter into the reaction intracavity through second annular chamber and air inlet chamber in proper order and react, this protective gas is the synthetic gas feed gas.

10. The heat recovery device of claim 1,

when the heat recovery device works, synthetic gas enters the air inlet cylinder from the air inlet pipe, then enters the inner cylinder through the air inlet channel, is discharged from the air outlet through the air outlet channel and the air return cavity, and enters the next working procedure;

the heat transfer medium enters the water inlet cavity from the refrigerant inlet and then enters the tubes to exchange heat with the synthesis gas outside the tubes, and the heat transfer medium after heat exchange is collected in the water return cavity and then is discharged through the water discharge pipe and the refrigerant outlet;

the inlet temperature of the synthesis gas is 425-435 ℃, and the outlet temperature of the synthesis gas is 215-225 ℃; the inlet temperature of the heat transfer medium is 130 +/-5 ℃, and the outlet temperature of the heat transfer medium is 215 +/-5 ℃.

Background

The tubular heat exchanger is widely applied as conventional equipment for recovering heat energy of synthesis gas, and the synthesis gas contains high-concentration hydrogen, so that in order to avoid hydrogen corrosion of a welding seam, a welding material resistant to high temperature and strong hydrogen corrosion is required, so that the manufacturing cost of the heat exchanger is higher, and the maintenance cost of the equipment is also higher. In addition, the structure of the tubular heat exchanger generally adopts a semi-counterflow structure, namely, only part of the heat exchange tube is used for counterflow heat exchange, and the other part of the heat exchange tube is used for forward flow heat exchange, so that the heat exchange efficiency of the heat exchanger is reduced.

Disclosure of Invention

In order to improve the heat exchange efficiency, the application provides a full-counterflow heat recovery device, which comprises a shell extending along an axial direction, wherein a partition tube plate is arranged in the shell, the partition tube plate divides an inner cavity of the shell into a heat exchange cavity and a water inlet cavity along the axial direction, a heat exchange tube is arranged in the heat exchange cavity, the heat exchange tube comprises an air inlet tube and an inner tube which are hermetically connected together, the air inlet tube is positioned on one side of the inner tube, which is far away from the partition tube plate, a gas return cavity is formed between the heat exchange tube and the shell, and an air inlet tube communicated with the air inlet tube and an air outlet communicated with the gas return cavity are arranged on the shell; the axis extends in a horizontal direction;

a water returning part is arranged in the air inlet cylinder, the water returning part comprises an inner pipe plate and an inner seal head which is hermetically arranged on the inner pipe plate, and a water returning cavity is formed between the inner pipe plate and the inner seal head;

an air inlet channel is formed at one end of the inner cylinder facing the inner pipe plate, and the inner cavity of the inner cylinder is communicated with the air inlet cylinder through the air inlet channel; one end of the inner cylinder, which faces the partition tube plate, is provided with an air outlet channel, and the inner cavity of the inner cylinder is communicated with the air return cavity through the air outlet channel;

the heat exchange cylinder is internally provided with a tube array extending along the axial direction, one end of the tube array is hermetically arranged on the inner tube plate and communicated with the water return cavity, and the other end of the tube array is hermetically arranged on the partition tube plate and communicated with the water inlet cavity; one end of the water drain pipe is hermetically arranged on the inner pipe plate and communicated with the water return cavity, and the other end of the water drain pipe hermetically penetrates through the partition pipe plate and the shell to form a refrigerant outlet; the shell is provided with a refrigerant inlet communicated with the water inlet cavity. The array tube is a straight tube extending along the axial direction.

The heat recovery device in the application can be used for reaction heat recovery of synthesis gas, the synthesis gas and the heat transfer medium are in a complete countercurrent state, and compared with the existing semi-countercurrent equipment, the heat exchange efficiency can be improved by 10-15%, and the heat exchange efficiency is improved, so that the outlet temperature of the heat transfer medium is favorably improved. Due to the adoption of the straight tube type tubes, almost the same expansion amount can be generated when the tubes expand with heat and contract with cold, so that the tubes can be synchronously expanded and contracted, the internal stress generated due to asynchronous expansion and contraction of the tubes is greatly reduced, and the stress effect at the welding position of the tubes and the tube plate can be reduced.

When the U-shaped pipe is used as a heat exchange pipe, the generated expansion amount is different due to different temperature changes of the water inlet section and the water outlet section of the U-shaped pipe, so that large internal stress appears at the welding position of the U-shaped pipe and the pipe plate. Because the internal stress generated when each part of the equipment stretches can be effectively reduced, the anti-stress treatment cost of the equipment can be reduced, meanwhile, because the heat exchange efficiency is improved, the outlet temperature of the synthesis gas in the heat recovery device can be reduced, the maximum service temperature of the partition tube plate is reduced, and the material grade of the partition tube plate area can be reduced, so that the manufacturing cost of the equipment is reduced. By adopting the method and the device, the equipment manufacturing cost can be reduced by 5-10% under the condition of treating the same synthesis gas flow.

In this application, the welded joint between tubulation and the partition tube sheet is located into the water cavity, and the welded joint between tubulation and the interior tube sheet is located the return water intracavity, and at the during operation, the synthetic gas can not contact the tubulation and the welded joint between partition tube sheet and the interior tube sheet, and the welded joint of these two places all contacts with heat transfer medium moreover, compares with the temperature of synthetic gas, is in lower temperature region, can prevent hydrogen corrosion effectively.

In this application, adopt the tubulation of straight tube formula, owing to need not to consider the occupation space of the flexion of U type heat exchange tube, can improve the installation density of tubulation, reduce equipment diameter makes equipment design for slim and long type, and the extension heat transfer distance more is favorable to improving heat exchange efficiency, simultaneously because equipment diameter's reduction, can reduce the preparation degree of difficulty of equipment.

Furthermore, in order to ensure that the tube nest can freely extend and retract when expanding with heat and contracting with cold, the inner cylinder is not connected with the water return part, and a gap between the inner cylinder and the water return part forms an air inlet channel; the inner cylinder is not connected with the partition tube plate, and a gap between the inner cylinder and the partition tube plate forms an air outlet channel; in the radial direction, an annular air passage is arranged between the water return piece and the air inlet cylinder, and the air inlet passage is communicated with the air inlet pipe through the annular air passage. The radial direction refers to a direction perpendicular to the axis. And the water return piece is only connected to the tube nest and the drain pipe. In the application, the inner seal head is positioned at one side of the inner tube plate, which is far away from the partition tube plate, and the optimal distance between the inner tube plate and the inner tube is 150-400 mm; the optimal gap between the inner cylinder and the partition tube plate is 150-400mm, and the distance between the inner cylinder and the inner tube and the gap between the inner cylinder and the partition tube plate are preferably the same, so that the smooth flow of the synthesis gas is ensured, and the local overlarge resistance on the synthesis gas is avoided.

Above-mentioned structure can make return water spare unsettled in an air inlet section of thick bamboo, when the tubulation makes length change because expend with heat and contract with cold, can not receive the restriction of return water spare, can freely stretch out and draw back along the axis direction, avoids producing the internal stress to avoid the welding seam fracture scheduling problem that produces from this, guaranteed the safe operation of equipment, improved the life of equipment.

Furthermore, in order to enhance the heat transfer efficiency, at least three baffle rod groups which are arranged at intervals are arranged in the inner cavity of the inner cylinder along the axis direction, each baffle rod group comprises a plurality of baffle rods, the baffle rods in the same baffle rod group are parallel to each other and are arranged at intervals, and all the baffle rods are vertical to the axis direction; the central pipe and the inner cylinder are coaxially arranged, and each baffle rod group is slidably supported on the drain pipe and the inner cylinder;

viewed in the axial direction, the rods of at least one rod set intersect the rods of another rod set so that the rods form tube-through holes, through which tubes are freely passed and then connected to the inner tube plate and the partition plate.

After the tube penetrating hole is formed, the deflecting rod can be used as a deflecting component of the synthesis gas, the disturbance to the synthesis gas is improved, the heat exchange efficiency is improved, the deflecting rod is supported in the inner cylinder and can also be used as a support of the tube array, one end of the tube array, which is far away from the cutting tube plate, is prevented from bending downwards under the action of gravity, and the tube array freely passes through the tube penetrating hole, so that the expansion and contraction of the tube array caused by expansion with heat and contraction with cold are not limited, the internal stress of the tube array caused by expansion with heat and contraction with cold is further avoided, and the probability of cracking of the welding seams of the tube array, the cutting tube plate and the inner tube plate is greatly reduced. Each baffle rod group is supported on the drain pipe and the inner cylinder in a sliding mode, the drain pipe and the inner cylinder can stretch out and draw back independently, and influence between the drain pipe and the inner cylinder is avoided.

Preferably, the tube penetration holes are square or regular hexagon as viewed along the axial direction. The design can ensure that the baffle rods are uniformly arranged in the inner cylinder, can also uniformly provide support for the tubes, and can ensure that the tubes can be uniformly arranged to the maximum extent by forming the square or regular hexagon tube penetrating holes. After the pipe penetrating holes are arranged to be square or regular hexagon, the installation density of the tubes can be improved, and the volume of the equipment is reduced.

Furthermore, in order to improve the installation efficiency, each deflection rod group comprises a positioning ring, deflection rods which are parallel to each other are fixedly installed in the positioning ring, the positioning rings of every N deflection rod groups are connected into one installation group through connecting pieces, and N is an integer between 2 and 5.

When carrying out the equipment preparation, can assemble into the installation group of a whole form with a plurality of baffling pole group at equipment outside at first, then install each installation group again in the inner tube, adopt a N baffling pole group to constitute an installation group moreover, can be convenient for carry out disposable location to each baffling pole subassembly, improve the installation effectiveness.

Furthermore, in order to reduce the internal stress of the heat exchange cylinder when expanding with heat and contracting with cold, a step part is arranged between the air inlet cylinder and the inner cylinder. After the step part is arranged, the heat exchange cylinder can be mainly concentrated on the step part when being stretched and deformed, so that the deformation of other areas is reduced, at the moment, the deformation of the step part is mainly bending deformation, and the stress effect of welding seams between the components of the heat exchange cylinder is reduced.

Further, a backing plate is installed on the lower side of the inner wall of the heat exchange cavity, a sliding block is fixedly installed on the heat exchange cylinder, and the sliding block can slide on the backing plate in a reciprocating mode along the axis direction. Utilize the sliding block, when guaranteeing that the heat transfer section of thick bamboo is freely flexible, still can improve for the heat transfer section of thick bamboo and support, avoid the heat transfer section of thick bamboo to produce bending deformation because of gravity.

Furthermore, the gas inlet pipe is used for connecting a synthesis gas reactor, the synthesis gas reactor is provided with a connecting pipe and a reaction gas outlet pipe, and the connecting pipe is sleeved on the reaction gas outlet pipe;

when the gas inlet pipe is connected to the synthesis gas reactor, the connecting pipe is hermetically connected to the gas inlet pipe, the reaction gas outlet pipe is inserted into the gas inlet pipe and is hermetically connected to the gas inlet cylinder, the outer wall of the reaction gas outlet pipe is hermetically pressed against one end, facing the inner cavity of the shell, of the gas inlet pipe, a first annular cavity is formed between the reaction gas outlet pipe and the gas inlet pipe, a second annular cavity is formed between the reaction gas outlet pipe and the connecting pipe, the first annular cavity is communicated with a gas inlet cavity of the synthesis gas reactor through the second annular cavity, and the gas inlet cavity is communicated with a reaction cavity of the synthesis gas reactor;

install the protective gas inlet tube of this first annular chamber of intercommunication on this intake pipe, the protective gas can enter into first annular chamber through this protective gas inlet tube to enter into the reaction intracavity through second annular chamber and air inlet chamber in proper order and react, this protective gas is the synthetic gas feed gas.

After the protective gas inlet pipe is arranged, protective gas can be filled into the first annular cavity to reduce the temperature of the air inlet pipe, so that the deformation of the air inlet pipe caused by expansion with heat and contraction with cold is reduced, the temperature of the air inlet pipe can be kept below 440 ℃, the material requirement of the air inlet pipe is reduced, and the manufacturing cost of equipment is reduced. Because the protective gas adopts the raw material gas of the synthesis gas, the cooled protective gas directly enters the reaction cavity to react, a protective gas recovery pipeline can be omitted, and the installation cost of equipment and the production cost of the protective gas are reduced.

Further, in order to ensure the heat exchange efficiency, when the heat recovery device works, the synthesis gas enters the air inlet cylinder from the air inlet pipe, then enters the inner cylinder through the air inlet channel, is discharged from the air outlet through the air outlet channel and the air return cavity, and enters the next working procedure;

the heat transfer medium enters the water inlet cavity from the refrigerant inlet and then enters the tubes to exchange heat with the synthesis gas outside the tubes, and the heat transfer medium after heat exchange is collected in the water return cavity and then is discharged through the water discharge pipe and the refrigerant outlet;

the inlet temperature of the synthesis gas is 425-435 ℃, and the outlet temperature of the synthesis gas is 215-225 ℃; the inlet temperature of the heat transfer medium is 130 +/-5 ℃, and the outlet temperature of the heat transfer medium is 215 +/-5 ℃. In this application, the inlet temperature of the syngas is the temperature of the syngas as it enters the heat recovery unit and the outlet temperature of the syngas is the temperature of the syngas as it exits the heat recovery unit.

The heat transfer medium can be water, steam, heat transfer oil or other non-corrosive medium.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion W in fig. 1.

Fig. 3 is an enlarged view of the X portion in fig. 2.

Fig. 4 is an enlarged view taken along line a-a in fig. 2.

Fig. 5 is an enlarged view taken along line B-B in fig. 2.

Fig. 6 is an enlarged view in the direction of C-C in fig. 2.

Fig. 7 is a partially enlarged view of the tube array as viewed in the axial direction.

Detailed Description

Referring to fig. 1, in fig. 1, an arrow 200 indicates an axial direction, which extends in a horizontal direction.

A full-counterflow heat recovery device comprises a shell 10 extending along the axis direction, the shell comprises a gas side channel box 11, a composite cylinder 12 and a water side channel box 13 which are sequentially connected into a whole, a dividing tube plate 33 is arranged between the composite cylinder 12 and the water side channel box 13, one end of the gas side channel box 11 departing from the dividing tube plate is provided with a flat seal head 15, one end of the water side channel box 13 departing from the dividing tube plate 33 is provided with a circular seal head 14, the center of the circular seal head 14 is provided with a manhole 133, and a cover plate 134 is arranged on the manhole 133, wherein the composite cylinder 12 is formed by overlapping a plurality of layers of steel plates, and the composite cylinder 12 is a binding cylinder in the prior art. A sliding support 100 is mounted on the lower side of the housing.

The partition tube plate 33 divides the inner cavity of the shell into a heat exchange cavity 101 and a water inlet cavity 102 along the axial direction, wherein the heat exchange cavity 101 is an area surrounded by the gas-side tube box 11 and the composite cylinder 12, and the water inlet cavity 102 is an area surrounded by the water-side tube box 13.

A heat exchange cylinder is arranged in the heat exchange cavity 101, the heat exchange cylinder comprises an air inlet cylinder 28 and an inner cylinder 25 which are connected together in a sealing manner, the air inlet cylinder 28 comprises an air inlet part 21, an eccentric part 22 and a centering cylinder 23 which are welded together in sequence along the axial direction, wherein the centering cylinder 23 is positioned on one side of the eccentric part facing the inner cylinder 25, so that the centering cylinder 23 is connected to the inner cylinder 25.

The center cylinder 23 is a cylinder concentrically arranged with the inner cylinder 25, the outer diameter of the inner cylinder is smaller than the inner diameter of the center cylinder 23, an annular plate 232 is welded on one side of the center cylinder 23 facing the inner cylinder 25, the annular plate 232 extends towards the inner side direction of the center cylinder 23, and the inner cylinder 25 is hermetically welded on the annular plate 232, so that the annular plate 232 forms a step part, namely, a step part is arranged between the air inlet cylinder and the inner cylinder. In this embodiment, the outer diameter of the inner cylinder is 250mm smaller than the inner diameter of the centering cylinder, so that a distance of 125mm is provided between the outer wall of the inner cylinder and the inner wall of the centering cylinder, and when the heat exchange cylinder is deformed by heating, the deformation in the axial direction can be mainly concentrated on the annular plate, thereby reducing the deformation in other areas. It will be appreciated that in other embodiments, the specific dimensions of the step portion may be set according to the size of the specific device and the temperature of use. Of course, the inner diameter of the inner cylinder can be made larger than the outer diameter of the right-center cylinder.

An annular air return cavity 103 is formed between the heat exchange cylinder and the shell, an air inlet pipe 51 and an air outlet 111 are arranged on the shell, wherein the air inlet pipe 51 is communicated with the air inlet cylinder 28, and the air outlet is communicated with the air return cavity.

A water returning part 36 is arranged in the air inlet cylinder 28, the water returning part 36 comprises an inner pipe plate 32 and an inner end enclosure 31 which is hermetically arranged on the inner pipe plate, the inner end enclosure 31 is positioned on one side of the inner pipe plate 32, which is far away from the partition pipe plate 33, and a water returning cavity 37 is formed between the inner pipe plate 32 and the inner end enclosure 31.

The inner cylinder 25 is located between the inner tube plate 32 and the partition tube plate 33, an air inlet channel 24 is formed at one end of the inner cylinder 25 facing the inner tube plate 32, and the inner cavity of the inner cylinder 25 is communicated with the air inlet cylinder 28 through the air inlet channel 24. The end of the inner cylinder 25 facing the partition tube plate 33 has an air outlet channel 26, and the inner cavity of the inner cylinder 25 is communicated with the air return chamber 103 through the air outlet channel 26.

In the embodiment, the inner cylinder 25 is not connected with the water return piece 36, and a gap between the inner cylinder and the water return piece is formed into the air inlet channel 24; the inner cylinder 25 is not connected to the partition tube sheet 33, and a gap between the inner cylinder and the partition tube sheet is formed as the gas outlet passage 26. The water returning member 36 is connected to the column pipe 41 and the drain pipe 34 described below only via the inner pipe plate 32. In the radial direction, an annular air passage is arranged between the water return piece and the air inlet cylinder, and the air inlet passage is communicated with the air inlet pipe through the annular air passage. The drain pipe is not connected with the baffle rod, so that the drain pipe can be freely stretched.

A plurality of parallel tubes 41 are arranged in the heat exchange cylinder, the tubes 41 are straight tubes extending along the axial direction, one end of each tube 41 is hermetically arranged on the inner tube plate 32 and communicated with the water return cavity 37, and the other end of each tube 41 is hermetically arranged on the partition tube plate 33 and communicated with the water inlet cavity 102; one end of the water discharge pipe 34 is hermetically installed on the inner pipe plate 32 and communicated with the water return cavity 37, and the other end of the water discharge pipe 34 is hermetically penetrated through the partition pipe plate 33 and the housing to form a refrigerant outlet 132; a refrigerant inlet 131 communicated with the water inlet chamber 102 is installed on the housing.

Referring to fig. 2-7, in the present embodiment, 45 rod sets are installed in the inner cavity of the inner cylinder along the axial direction, each rod set includes a plurality of rod sets, the rod sets in the same rod set are parallel and spaced apart from each other, and all the rod sets are perpendicular to the axial direction.

Each baffle rod group comprises a positioning ring, baffle rods which are parallel to each other are fixedly arranged in the positioning ring, the positioning ring of each 3 baffle rod groups is connected into an installation group through a connecting piece, and when the baffle rods in the three adjacent baffle rod groups are observed along the axial direction, a through hole is formed between the baffle rods. The central tube and the inner tube are coaxially arranged, and each baffle rod group is supported on the drain pipe and the inner tube in a sliding manner through a positioning ring.

For convenience of description, 3 baffle groups connected as one installation group are referred to as a first baffle group 430, a second baffle group 440, and a third baffle group 450 in sequence. The first baffle rod set 430 includes a first positioning ring 431 and a first baffle rod 43 welded in the first positioning ring, the second baffle rod set 440 includes a second positioning ring 441 and a second baffle rod 44 welded in the second positioning ring, and the third baffle rod set 450 includes a third positioning ring 451 and a third baffle rod 45 welded in the third positioning ring. The angle α between the first deflecting bar 43 and the horizontal plane is 60 °, the angle β between the second deflecting bar 44 and the horizontal plane is also 60 °, and the inclination directions of the first deflecting bar 43 and the second deflecting bar 44 are opposite, so that the angle between the first deflecting bar 43 and the second deflecting bar 44 is also 60 °, and the third deflecting bar 45 is parallel to the horizontal plane.

The first retaining ring 431, the second retaining ring 441 and the third retaining ring 451 are connected by the connecting plate 47, so that the first deflecting bar set 430, the second deflecting bar set 440 and the third deflecting bar set 450 are connected into an installation set. Meanwhile, each positioning ring is welded on the pull rod 46, so that all the deflecting rods are integrated.

Viewed in the axial direction, the rod baffles of two adjacent rod baffle groups are crossed at an angle of 60 degrees, hexagonal through-pipe holes are formed among the rod baffles of 3 rod baffle groups connected into one installation group, and the tubes 41 are freely connected to the inner tube plate and the partition tube plate after passing through the through-pipe holes.

It will be appreciated that the rods of one rod set may be perpendicular to the rods of an adjacent rod set, with the resulting perforations being square.

A shim plate 121 is attached to the lower side of the inner wall of the heat exchange chamber 101, and a slide block 231 is fixedly attached to the lower side of the intake cylinder, and the slide block 231 is capable of reciprocating on the shim plate 121 in the axial direction. Make the heat exchanger section of thick bamboo have certain free flexible volume when expend with heat and contract with cold, the sliding block 231 can avoid the heat exchanger section of thick bamboo directly to lean on the shell simultaneously. It will be appreciated that in other embodiments, the slide blocks may also be mounted on the underside of the inner barrel, or both the inlet barrel and the underside of the inner barrel.

The inlet pipe 51 is used for connecting a synthesis gas reactor 800, and the synthesis gas reactor 800 has a connecting pipe 801 and a reaction gas outlet pipe 802, and the connecting pipe 801 is sleeved on the reaction gas outlet pipe 802.

When the inlet pipe 51 is connected to the syngas reactor 800, the connection pipe 801 is sealingly connected to the inlet pipe 51 via an omega-shaped sealing ring 803, and the reaction gas outlet pipe 802 is inserted into the inlet pipe 51 and sealingly connected to the inlet portion 21 of the inlet barrel 28 via a metal elastic ring 59.

The outer wall of the reaction gas outlet pipe 802 is sealingly pressed against the end of the inlet pipe 51 facing the inner cavity of the housing via the packing assembly 58, a first annular chamber 54 is formed between the reaction gas outlet pipe 802 and the inlet pipe 51, a second annular chamber 808 is formed between the reaction gas outlet pipe 802 and the connecting pipe 801, the first annular chamber 54 is communicated with the inlet chamber 807 of the synthesis gas reactor via the second annular chamber 808, and the inlet chamber 807 is communicated with the reaction chamber 806 of the synthesis gas reactor 800. The synthesis gas reactor is provided with a feed gas inlet tube 804 communicating with an inlet plenum 807.

A shielding gas inlet pipe 53 communicated with the first annular cavity 54 is installed on the gas inlet pipe 51, shielding gas can enter the first annular cavity 54 through the shielding gas inlet pipe, and sequentially enters the reaction cavity through the second annular cavity 808 and the gas inlet cavity 807 to react, the reacted synthesis gas enters the collecting pipe 805, and the collecting pipe 805 is communicated with the reaction gas outlet pipe 802. The protective gas is synthesis gas raw material gas.

When the air inlet cylinder works, synthetic gas enters the air inlet cylinder from the air inlet pipe, then enters the inner cylinder through the annular air passage between the water return piece 36 and the air inlet cylinder and the air inlet channel, is discharged from the air outlet through the air outlet channel and the air return cavity, and enters the next working procedure; the heat transfer medium enters the water inlet cavity from the refrigerant inlet and then enters the tubes to exchange heat with the synthesis gas outside the tubes, and the heat transfer medium after heat exchange is collected in the water return cavity and then discharged through the water discharge pipe and the refrigerant outlet.

The inlet temperature of the synthesis gas is 425-435 ℃, and the outlet temperature of the synthesis gas is 215-225 ℃; the inlet temperature of the heat transfer medium is 130 +/-5 ℃, and the outlet temperature of the heat transfer medium is 215 +/-5 ℃.

In this embodiment, hot water is used as the heat transfer medium. It will be appreciated that in other embodiments, the heat transfer medium may also be steam or a thermal oil.