1. The dirty oil treatment device for the oil refinery comprises a mixing component (1), a variable flow component (2) and a centrifugal component (3), and is characterized in that the mixing component (1) comprises a mixing box (13), and a discharge hole (11) is formed in the bottom of the mixing box (13);

the centrifugal assembly (3) comprises a separation box (31), and four oil inlets (310) are arranged above the separation box (31) in a rectangular array;

the variable flow component (2) comprises a first oil pipe (21) and a second oil pipe (22), one end of the first oil pipe (21) is connected with a discharge hole (11) of the mixing box (13), the other end of the first oil pipe (21) is connected with one end of the second oil pipe (22) through a plurality of communicating pipes (24), the other end of the second oil pipe (22) is provided with a first shunt pipe (25), the other end of the first shunt pipe (25) is symmetrically provided with a second shunt pipe (261) through a shunt valve (26), and the second shunt pipe (261) is connected with an oil inlet (310) respectively.

2. The refinery dirty oil treatment device according to claim 1, wherein a tank waist (33) is arranged on the separation tank (31), a lining (34) is arranged below the inside of the separation tank (31), a centrifugal cylinder (32) is rotatably arranged above the lining (34) inside the separation tank (31), a suspension (321) is arranged at the bottom of the centrifugal cylinder (32), a bearing (323) is arranged at the middle position of the suspension (321), a servo motor (311) and a propulsion shaft (312) are rotatably arranged at the top end of the separation tank (31), and a water tray (313), a propulsion blade (314) and a feeding tray (315) are arranged on the propulsion shaft (312).

3. The refinery dirty oil treatment device according to claim 2, wherein a support (331) is arranged inside the tank waist (33), a centrifugal motor (332) is arranged on the support (331), and a motor shaft of the centrifugal motor (332) is connected with a bearing (323).

4. The refinery dirty oil treatment device according to claim 1, wherein a feed inlet (10) is provided above the mixing tank (13), an oil pipe interface (101) and a medicine interface (102) are arranged at the end part of the feed port (10), a protection box (12) is arranged on one side of the mixing box (13), a mixing motor (121) is arranged on the side surface of the mixing box (13) in the protection box (12), a plurality of stirring shafts (122) are arranged inside the mixing box (13), a plurality of stirring blades (123) are arranged on the stirring shafts (122) at equal intervals, one end of the stirring shaft (122) penetrates through the mixing box (13) and is provided with a driving wheel (124), the stirring shaft (122) positioned in the middle is fixedly connected with a motor shaft of the mixing motor (121), and the stirring shafts (122) are rotatably connected through a belt (125).

5. The refinery dirty oil treatment device according to claim 1, wherein the first oil pipe (21) is provided with a plurality of settling pipes (23) on the side opposite to the communicating pipe (24), and the second oil pipe (22) is provided with an oil pump (221).

6. The refinery dirty oil treatment device according to claim 5, wherein a strainer (241) is provided inside the connection pipe (24).

7. The refinery dirty oil treatment device according to claim 2, wherein the water tray (313) is provided with a plurality of rotating patterns (3131) in an annular array, the material feeding tray (315) is provided with a plurality of material feeding sheets (3151) in an annular array, and the top of the material feeding sheet (3151) is provided with a limiting shaft (3150).

8. The refinery dirty oil treatment device according to claim 2, wherein a limiting strip (322) arranged below the centrifugal cylinder (32) is in fit connection with a limiting groove (3420) formed in the top of the lining (34).

9. The refinery dirty oil treatment device according to claim 8, wherein the centrifuge bowl (32) has a plurality of water holes (320) formed therein in a rectangular array.

10. The refinery dirty oil treatment device according to claim 8, wherein a plurality of liquid outlets (340) are formed in the side surface of the separation box (31), and a baffle (341) is arranged outside the separation box (31) above the liquid outlets (340).

Background

The normally produced crude oil from an oil well is typically dewatered by heating, chemical demulsification (addition of demulsifiers), gravity settling, and electrical dewatering. These techniques meet most of the economic and technical requirements for crude oil dehydration, but inevitably produce some dirty oil during the process of collecting, transporting and treating the produced liquid in the oil field, including recovered oil falling to the ground, scum produced during the sewage treatment, oil extracted from sludge and the like. The dirty oil is polluted by various kinds of pollution, has complex components and is seriously emulsified. Since the oil-water emulsion interface film is generally severely aged after a long-term storage, it is also called aged oil. The oil refining enterprises also have a large amount of aged crude oil, and aiming at the treatment of the aged crude oil, the current technical processes mainly comprise thermochemical dehydration, electrical dehydration, mechanical centrifugal dehydration and the like.

Wherein, the centrifugal dehydration is widely applied, and the separation of oil and slag is realized through high-speed centrifugation. The required dewatering requirements can be achieved as long as the rotational speed of the apparatus is sufficiently high. However, the existing high-speed centrifuge has a complex structure, poor impurity bearing capacity, frequent disassembly and cleaning, and difficult operation and maintenance.

Disclosure of Invention

The invention aims to provide a device for treating dirty oil in an oil refinery, which solves the following technical problems:

the existing high-speed centrifuge has the problems of complex structure, poor impurity bearing capacity, frequent disassembly and cleaning and difficult operation and maintenance.

The purpose of the invention can be realized by the following technical scheme:

the oil refinery effluent oil treatment device comprises a mixing component, a variable flow component and a centrifugal component, wherein the mixing component comprises a mixing box, and the bottom of the mixing box is provided with a discharge hole;

the centrifugal assembly comprises a separation box, and four oil inlets are arranged above the separation box in a rectangular array;

the variable flow component comprises a first oil pipe and a second oil pipe, one end of the first oil pipe is connected with a discharge port of the mixing box, the other end of the first oil pipe is connected with one end of the second oil pipe through a plurality of communicating pipes, a first shunt pipe is arranged at the other end of the second oil pipe, a second shunt pipe is symmetrically arranged at the other end of the first shunt pipe through a shunt valve, and the second shunt pipe is connected with an oil inlet respectively.

As a further scheme of the invention: the improved centrifugal separation box is characterized in that a box waist is arranged on the separation box, a lining is arranged below the inside of the separation box, a centrifugal cylinder is arranged above the lining in the inside of the separation box in a rotating mode, a suspension is arranged at the bottom of the centrifugal cylinder, a bearing is arranged at the middle position of the suspension, a servo motor and a propulsion shaft are arranged at the top end of the separation box in a rotating mode, and a water disc, a propulsion blade and a material disc are arranged on the propulsion shaft.

As a further scheme of the invention: the inside of case waist is provided with the support, be provided with centrifugal motor on the support, centrifugal motor's motor shaft and bearing are connected.

As a further scheme of the invention: the top of mixing box is provided with the feed inlet, the tip of feed inlet is provided with oil pipe interface and medicine interface, one side of mixing box is provided with the protection box, the inside that the side of mixing box is located the protection box is provided with hybrid electric machine, the inside of mixing box is provided with a plurality of (mixing) shafts, the equidistant a plurality of stirring leaves that are provided with on the (mixing) shaft, the one end of (mixing) shaft is run through the mixing box and is provided with the drive wheel, is located the (mixing) shaft in the middle of and hybrid electric machine's motor shaft fixed connection, rotate through the belt between the (mixing) shaft and be connected.

As a further scheme of the invention: a plurality of settling tubes are arranged on one side, opposite to the communicating tube, of the first oil pipe, and an oil pump is arranged on the second oil pipe.

As a further scheme of the invention: the inside of communicating pipe is provided with the filter screen.

As a further scheme of the invention: the water tray is provided with a plurality of rotating lines in an annular array, the material tray is provided with a plurality of material sheets in an annular array, and the top of each material sheet is provided with a limiting shaft.

As a further scheme of the invention: and a limiting strip arranged below the centrifugal cylinder is in adaptive connection with the top of the lining through a limiting groove.

As a further scheme of the invention: a plurality of water holes are formed in the centrifugal cylinder in a rectangular array.

As a further scheme of the invention: a plurality of liquid outlets are formed in the side face of the separation box, and a baffle is arranged outside the separation box and above the liquid outlets.

The invention has the beneficial effects that:

(1) in the invention, in the final treatment process of the dirty oil, centrifugal treatment is adopted, a centrifugal component of the centrifugal treatment comprises a separation box, a propelling shaft and a centrifugal cylinder are arranged at the middle part of the separation box, the propelling shaft is arranged in the middle of the centrifugal cylinder, a water disc is arranged on the propelling shaft, rotating veins are arranged on the water disc, when the dirty oil enters from an oil inlet, the dirty oil firstly falls on the water disc, the water disc rotates under the drive of a servo motor to send the dirty oil to an inner wall mountain of the centrifugal cylinder, the centrifugal cylinder carries out centrifugal action on the dirty oil to separate liquid components and solid components in the dirty oil, the separated liquid components flow out from a drainage groove formed by the separation box and a lining, the solid components are attached to the inner wall of the centrifugal cylinder under the action of the centrifugal cylinder, and simultaneously, the solid components move downwards along the inner wall of the centrifugal cylinder under the action of propelling blades, when the solid components move to the lowest part, the solid components are scraped from the interior of the centrifugal cylinder by the feed plate through the feed openings formed between the feed plates and fall out from the lower part of the separation box, and then the oil liquid in the dirty oil is subjected to solid-liquid separation;

(2) in the invention, when the device pretreats dirty oil, dirty oil and treatment medicine are respectively added into a mixing box through an oil pipe interface and a medicine interface, the medicine and the dirty oil generate corresponding chemical reaction to generate precipitation and carry out primary treatment, then the dirty oil which forms solid-liquid mixture flows into a second oil pipe through a first oil pipe, passes through a communicating pipe between the first oil pipe and the second oil pipe, large solid particles can be filtered under the action of a filter screen in the communicating pipe and fall into a settling pipe which is opposite to the communicating pipe, the settling pipe is made of transparent material, whether the interior is in a full state can be seen, meanwhile, the settling pipe is connected with the first oil pipe through a single-pass interface, when the settling pipe takes off solid sediment and takes out the solid sediment, the single-pass interface can be automatically closed, when the connection is carried out, the mixing component is matched with a shunt component for use, the large-particle impurities and harmful substances of the pretreatment of the dirty oil can be effectively removed, the operation is simple, the replacement is easy, and the use is not influenced in the replacement process.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the separation tank of the present invention;

FIG. 3 is an enlarged view of the area A in FIG. 2;

FIG. 4 is a schematic view of the connecting structure of the feeding tray in the present invention;

FIG. 5 is a schematic view of the connection structure of the diverter valve and the second diverter pipe according to the present invention;

FIG. 6 is a schematic view showing the internal structure of the mixing box according to the present invention;

FIG. 7 is a schematic bottom view of a centrifuge bowl according to the present invention;

FIG. 8 is a schematic view of a connection structure of the connection pipe and the strainer according to the present invention.

In the figure: 1. a mixing assembly; 10. a feed inlet; 101. an oil pipe interface; 102. a drug interface; 11. a discharge port; 12. a protection box; 121. a hybrid motor; 122. a stirring shaft; 123. stirring blades; 124. a driving wheel; 125. a belt; 13. a mixing box; 2. a variable flow component; 21. a first oil pipe; 211. a single-pass interface; 22. a second oil pipe; 221. an oil pump; 23. a settling tube; 24. a communicating pipe; 241. filtering with a screen; 25. a first shunt pipe; 26. a flow divider valve; 261. a second shunt pipe; 3. a centrifuge assembly; 30. a water discharge tank; 31. a separation tank; 310. an oil inlet; 311. a servo motor; 312. a propeller shaft; 313. a water pan; 3131. rotating the pattern; 314. advancing the leaves; 315. feeding a material plate; 3150. a limiting shaft; 3151. eating the tablets; 3152. feeding the material port; 32. a centrifugal cylinder; 320. a water pore; 321. a suspension; 322. a limiting strip; 323. a bearing; 33. a box waist; 331. a support; 332. a centrifugal motor; 34. a liner; 340. a liquid outlet; 341. a baffle plate; 3420. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention is a refinery effluent oil treatment plant, which comprises three treatment parts, namely, a drug mixing treatment, a solid preliminary sedimentation treatment and a solid-liquid centrifugal treatment, which are respectively realized by three treatment parts, namely a mixing component 1, a variable flow component 2 and a centrifugal component 3;

wherein, refer to fig. 6 for illustration, mixing component 1 includes main part mixing box 13, the bottom of mixing box 13 is provided with discharge gate 11, the top is provided with feed inlet 10, the tip at feed inlet 10 sets up oil pipe interface 101 and medicine interface 102, set up protection box 12 in one side of mixing box 13 outside, and the side of mixing box 13 lies in the inside of protection box 12 and sets up hybrid machine 121, set up (mixing) shaft 122 in the inside of mixing box 13, set up stirring vane 123 on the (mixing) shaft 122, the one end of (mixing) shaft 122 runs through mixing box 13 and is provided with drive wheel 124, the (mixing) shaft 122 that lies in the middle is fixedly connected with the motor shaft of hybrid machine 121, rotate through belt 125 between the (mixing) shaft 122 and connect.

Referring to fig. 5 and 8, schematically, the variable flow assembly 2 includes a first oil pipe 21 and a second oil pipe 22, one end of the first oil pipe 21 is connected to the discharge port 11 of the mixing box 13, the other end of the first oil pipe 21 is connected to one end of the second oil pipe 22 through a plurality of communicating pipes 24, that is, the first oil pipe 21 is connected to the second oil pipe 22 through the communicating pipes 24 in a parallel connection manner, a filter screen 241 is disposed inside the communicating pipes 24, a first shunt pipe 25 is disposed at the other end of the second oil pipe 22, a second shunt pipe 261 is symmetrically disposed at the other end of the first shunt pipe 25 through a shunt valve 26, the second shunt pipe 261 is respectively connected to the oil inlet 310, a settling pipe 23 is disposed at one side of the first oil pipe 21 opposite to the communicating pipes 24, an oil pump 221 is disposed on the second oil pipe 22, when the device pretreats dirty oil, dirty oil and treatment chemicals are respectively added into the mixing box 13 through an oil pipe interface 101 and a medicine interface 102, when the chemical reaction between the medicine and the dirty oil occurs, a precipitate is generated, the preliminary treatment is carried out, then the dirty oil which forms the solid-liquid mixture flows into the second oil pipe 22 through the first oil pipe 21, the dirty oil passes through the communicating pipe 24 between the first oil pipe 21 and the second oil pipe 22, under the action of the filter screen 241 in the communicating pipe 24, large solid particles can be filtered and fall into the settling pipe 23 which is opposite to the communicating pipe 24, the settling pipe 23 is made of transparent material, whether the interior is in a full state can be seen, meanwhile, the settling pipe 23 is connected with the first oil pipe 21 through the one-way interface 211, when the settling pipe 23 is taken down and solid sediment is taken out, the one-way interface 211 can be automatically closed and can be automatically opened during the connection, the mixing component 1 and the current conversion component 2 are matched for use, so that large particle impurities and harmful objects which are pretreated by the dirty oil can be effectively removed, the operation is simple, easy to replace and does not influence the use in the replacement process.

Referring to fig. 2, 3, 4 and 7, the centrifugal assembly 3 includes a separation box 31, four oil inlets 310 are arranged above the separation box 31 in a rectangular array, a box waist 33 is arranged on the separation box 31, a bracket 331 is arranged inside the box waist 33, a centrifugal motor 332 is arranged on the bracket 331, a liner 34 is arranged below the separation box 31, a centrifugal cylinder 32 is rotatably arranged above the liner 34 inside the separation box 31, a limit bar 322 arranged below the centrifugal cylinder 32 is in fit connection with a limit groove 3420 arranged on the top of the liner 34, water holes 320 are arranged on the centrifugal cylinder 32 in a rectangular array, a suspension 321 is arranged at the bottom of the centrifugal cylinder 32, a bearing 323 is arranged in the middle of the suspension 321, a motor shaft of the centrifugal motor 332 is connected with the bearing 323, a liquid outlet 340 is arranged on the side surface of the separation box 31, a baffle 341 is arranged above the liquid outlet 340 outside the separation box 31, a servo motor 311 and a propelling shaft 312 are rotatably arranged at the top end of the separation box 31, and a water disc 313, a propelling blade 314 and a material sucking disc 315 are arranged on the propelling shaft 312; wherein, the water plate 313 is provided with rotation patterns 3131 in an annular array, the material feeding plate 315 is provided with material feeding plates 3151 in an annular array, the top of the material feeding plates 3151 is provided with a limit shaft 3150, in the final treatment process of the dirty oil, centrifugal treatment is adopted, the centrifugal component 3 of the centrifugal treatment comprises a separation box 31, the middle part of the separation box 31 is provided with a propulsion shaft 312 and a centrifugal cylinder 32, the propulsion shaft 312 is arranged in the middle of the centrifugal cylinder 32, the water plate 313 is arranged on the propulsion shaft 312, and the rotation patterns 3131 are arranged on the water plate 313, when the dirty oil enters from the oil inlet 310, the dirty oil firstly falls on the water plate 313, the water plate 313 is driven by a servo motor 311 to rotate to send the dirty oil to the inner wall mountain of the centrifugal cylinder 32, the centrifugal cylinder 32 carries out centrifugal action on the dirty oil to separate the liquid component and the solid component in the dirty oil, the separated liquid component flows out through the drainage groove 30 formed by the separation box 31 and the lining 34, the solid component will be attached to the inner wall of the centrifuge cylinder 32 under the action of the centrifuge cylinder 32, and at the same time, under the action of the pushing blade 314, the solid component will move downwards along the inner wall of the centrifuge cylinder 32, when the solid component moves to the lowest part, the solid component will be scraped off from the interior of the centrifuge cylinder 32 by the feeding disc 315 through the feeding port 3152 formed between the feeding sheets 3151, and will fall out through the lower part of the separation box 31, and the oil in the dirty oil can be subjected to solid-liquid separation.

The working principle of the invention is as follows:

when the device is used, the oil pipe connector 101 above the feeding hole 10 of the device is connected with a dirty oil discharging device, the medicine connector 102 is connected with a medicine for precipitation reaction, the dirty oil and the reacted medicine enter the mixing box 13 to react, meanwhile, the mixing motor 121 is started, the mixing motor 121 drives the stirring blade 123 to rotate, so that the dirty oil and the medicine are fully reacted, meanwhile, the oil pump 221 is started, the dirty oil is pumped out of the mixing box 13 by the oil pump 221, and flows into the separation box 31 after passing through the variable flow component 2;

when the dirty oil passes through the variable flow assembly 2, the flowing route is as follows: when the sedimentation pipe 23 is full, the sedimentation pipe 23 is taken down from the one-way connector 211;

when dirty oil flows into the separation tank 31 through the second shunt pipe 261, the dirty oil falls from the oil inlet 310 onto the water tray 313, the water tray 313 is driven by the servo motor 311 to rotate the dirty oil onto the centrifuge cylinder 32 along the rotation pattern 3131 on the water tray 313, meanwhile, the centrifuge cylinder 32 is driven by the centrifuge motor 332 to rotate, liquid components in the dirty oil are centrifuged into the drainage groove 30 along the water holes 320 on the centrifuge cylinder 32, at this time, the solid components attached to the inner wall of the centrifuge cylinder 32 move downwards along the inner wall of the centrifuge cylinder 32 to the material inlet 3152 of the material taking plate 315 under the rotation action of the pushing blade 314, the material taking plate 315 flows the solid components out of the centrifuge cylinder 32, and the liquid components flow out of the liquid outlet 340 below the separation tank 31.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.