1. The vehicle-mounted heat-conducting oil online regeneration equipment is characterized by comprising a distillation kettle (1), a condenser (2), a vacuum buffer tank (3), a vacuum unit (4), a regeneration oil tank (5), a light component tank (6), a slag tank (7), a heater (8), a circulating pump (9) and a shielding pump (10), wherein one side of the distillation kettle (1) is connected with a heat-conducting oil system through an oil supply pipeline, the condenser (2) is connected above the distillation kettle (1), one end of the condenser (2) is respectively connected with the regeneration oil tank (5) and the light component tank (6) through pipelines, one end of the condenser (2) far away from the distillation kettle (1) is also connected with the vacuum buffer tank (3) through a pipeline, the vacuum buffer tank (3) is connected with the vacuum unit (4), and the position under the distillation kettle (1) is connected with the slag tank (7) through a pipeline, stills (1) below left side is connected with heater (8), the one end that still (1) was kept away from in heater (8) is connected with circulating pump (9), stills (1) are connected to the circulating pump (9) other end, regenerated oil tank (5) below is connected with canned motor pump (10), return oil pipe is connected to canned motor pump (10) other end.

2. The vehicle-mounted heat conduction oil online regeneration equipment according to claim 1, wherein the distillation kettle (1) is used for distilling heat conduction oil and can separate light components, regenerated oil and residues respectively.

3. The vehicle-mounted conduction oil on-line regeneration equipment according to claim 1, wherein the condenser (2) can cool and separate light components and regenerated oil distilled from the distillation still (1).

4. The vehicle-mounted online regeneration equipment for heat transfer oil according to claim 1, wherein the vacuum unit (4) is formed by combining an oil-free reciprocating vacuum pump and a roots pump.

5. The vehicle-mounted online regeneration equipment for conduction oil according to claim 1, wherein the regeneration oil tank (5) is used for collecting and storing the regeneration oil separated from the distillation still, the light component tank (6) is used for collecting and storing the light components distilled from the distillation still (1) firstly, and the slag tank (7) is used for collecting and storing the slag which is not evaporated from the distillation still.

6. The vehicle-mounted online regeneration device for heat transfer oil according to claim 1, wherein the heater (8) can provide a heat source for distillation of the distillation still (1), and the circulating pump (9) provides circulating power for heating of the distillation still (1).

7. A vehicle-mounted conduction oil on-line regeneration device according to claim 1, wherein the canned motor pump (10) is used for conveying the regeneration oil in the regeneration oil tank (5) back to the conduction oil system.

8. The regeneration method of the vehicle-mounted heat transfer oil online regeneration equipment according to claim 1 is characterized by comprising the following steps:

s1: firstly, an oil supply pipeline in a heat conduction oil system is connected with a distillation kettle (1), during regeneration, heat conduction oil in the heat conduction oil system enters the distillation kettle (1) through the oil supply pipeline, the temperature in the distillation kettle (1) is constantly changed, and the heat conduction oil is distilled in a vacuum state all the time;

s2: because the boiling point of the light component is the lowest, the light component is firstly evaporated out from the distillation kettle (1) at the vacuum of more than-0.07 MPa and the temperature of 150-;

s3: along with the continuous increase of the temperature, at the vacuum of more than-0.095 MPa and the temperature of 230-;

s4: finally, separating the slag which can not be evaporated in the distillation kettle (1) into a slag tank (7);

s5: and after the regeneration of the first kettle is finished, repeating the steps S1-S4, and carrying out the regeneration distillation of the next kettle, and repeating the steps until the regeneration reaches the qualified standard.

9. Regeneration method according to claim 8, wherein the temperature in the distillation still (1) in the step S1 is provided by the temperature of the heat transfer oil system itself, if the temperature is not enough, the temperature is heated by the heater (8), and the vacuum state in the distillation still (1) in the step S1 is provided by the vacuum assembly (4).

Background

Most production devices require heat in production, and most of the devices with the process temperature higher than 150 ℃ are heated by heat conduction oil. In the high-temperature use process of the heat conduction oil, the condition that the index is gradually deteriorated inevitably occurs along with the prolonging of time, and the main indexes of carbon residue, flash point, acid value, moisture, viscosity and the like exceed the national standard. If not used properly, the indicator changes more quickly. The exceeding of any index not only affects the normal production, but also brings great potential safety hazard, and causes accidents such as boiler burn-through, ignition, explosion and the like. Therefore, measures are taken in time to process the heat conduction oil after the index is abnormal.

For the treatment mode of the heat conduction oil with the standard exceeding index, the initial means is single, either the heat conduction oil is directly and completely replaced, or a part of the heat conduction oil is replaced after stopping production, but the cost of the heat conduction oil completely replaced is very high, and the mode is not adopted by manufacturers; the method of replacing a part of the heat transfer oil can not completely improve the index of the heat transfer oil in the system.

With the development of the technology, a factory for off-line regeneration of heat conduction oil later appears, when a production device stops production, all heat conduction oil in the system is discharged, barreling or grooving vehicles are sent to a regeneration factory for off-line regeneration treatment, the system is added after regeneration is finished, and then production is recovered, and for a manufacturer in continuous production, the factory for off-line regeneration of heat conduction oil has the following defects:

(1) production needs to be stopped, the stopping time is long, and the loss is large;

(2) the system has troublesome operations of oil discharging, loading and oiling;

(3) the residual oil sludge and dirt in the system are more, and new oil is polluted;

(4) the off-line regeneration loss of the heat conduction oil is large, the yield is low, and the relative cost is high;

(5) regeneration is carried out in a fixed factory, and the factory is inconvenient to monitor in real time;

(6) with the environmental requirements becoming more stringent, off-line regeneration plants are essentially banned.

Therefore, based on the problems, the vehicle-mounted heat-conducting oil online regeneration equipment and the regeneration method thereof are provided, the requirement of continuous production of customers is greatly met, the regeneration equipment is convenient to move, the heat-conducting oil in the system can be regenerated under the normal production condition, the index of the heat-conducting oil is conveniently and quickly repaired, the energy consumption and the treatment cost are reduced, the parking loss is avoided, meanwhile, the heat-conducting oil system is cleaner, the system is more stable to operate, and the potential safety hazard is eliminated.

Disclosure of Invention

In order to solve the technical problems, the invention provides vehicle-mounted heat-conducting oil online regeneration equipment which comprises a distillation kettle, a condenser, a vacuum buffer tank, a vacuum unit, a regeneration oil tank, a light component tank, a slag tank, a heater, a circulating pump and a shielding pump, wherein one side of the distillation kettle is connected with a heat-conducting oil system through an oil supply pipeline, the condenser is connected above the distillation kettle, one end of the condenser is respectively connected with the regeneration oil tank and the light component tank through pipelines, one end of the condenser, far away from the distillation kettle, is also connected with the vacuum buffer tank through a pipeline, the vacuum buffer tank is connected with the vacuum unit, the slag tank is connected under the distillation kettle through a pipeline, the left side under the distillation kettle is connected with the heater, one end of the heater, far away from the distillation kettle, is connected with the circulating pump, the other end of the circulating pump is connected with the distillation kettle, the shielding pump is connected under the regeneration oil tank, the other end of the shielding pump is connected with an oil return pipeline.

Preferably, the distillation still is used for distilling the heat conducting oil, and can separate the light components, the regenerated oil and the slag respectively.

Preferably, the condenser is capable of cooling and separating light components and regenerated oil distilled from the still.

Preferably, the vacuum unit is formed by combining an oil-free reciprocating vacuum pump and a roots pump.

Preferably, the regeneration oil tank is used for collecting and storing the regeneration oil separated from the distillation still.

Preferably, the light component tank is used for collecting and storing the light component distilled out from the distillation still first.

Preferably, the slag tank is used for collecting and storing slag which can not be evaporated in the distillation still.

Preferably, the heater can provide a heat source for distillation of the still pot.

Preferably, the circulating pump provides circulating power for heating the distillation still.

Preferably, the canned motor pump is used for conveying the regeneration oil in the regeneration oil tank back to the heat transfer oil system.

Preferably, the steps are as follows:

s1: firstly, connecting an oil supply pipeline in a heat conduction oil system with a distillation kettle, wherein during regeneration, heat conduction oil in the heat conduction oil system enters the distillation kettle through the oil supply pipeline, the temperature in the distillation kettle is constantly changed, and the heat conduction oil is distilled in a vacuum state all the time;

s2: because the boiling point of the light component is the lowest, the light component is firstly evaporated out from the distillation kettle at the vacuum of more than-0.07 MPa and the temperature of 150-;

s3: along with the continuous increase of the temperature, at the vacuum of more than-0.095 MPa and the temperature of 230-;

s4: finally, separating the slag which can not be evaporated in the distillation kettle into a slag tank;

s5: and after the regeneration of the first kettle is finished, repeating the steps S1-S4, and carrying out the regeneration distillation of the next kettle, and repeating the steps until the regeneration reaches the qualified standard.

Preferably, the temperature in the distillation still in the step S1 is provided by the temperature of the heat transfer oil system itself, and if the temperature is not enough, the distillation still is heated by the heater, and the vacuum state in the distillation still in the step S1 is provided by the vacuum assembly.

Compared with the prior art, the invention has the beneficial effects that:

1. the vehicle-mounted heat-conducting oil on-line regeneration equipment can move, can be transported to any required place by utilizing the flat car, and overcomes the limitation of the traditional fixed heat-conducting oil regeneration factory.

2. The invention is suitable for the on-line regeneration of the heat conducting oil and is also suitable for the off-line regeneration.

3. The distillation kettle, the heater and the circulating pump are arranged, so that the self heat of the heat conduction oil system can be used for heating during distillation, the heater can also be used for heating when the heat is insufficient, the distillation kettle is safe and environment-friendly, the defect of an oil-fired boiler is overcome, circulating power is provided for heating by the circulating pump, and the temperature required by heat conduction oil regeneration is ensured.

4. According to the invention, the oil-free reciprocating vacuum pump and the Roots pump are combined into the vacuum unit, so that no wastewater is generated in the process of vacuumizing, and the vacuum pump is safe and environment-friendly.

Drawings

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

FIG. 2 is a process flow diagram of the regeneration process of the present invention.

In the figure:

1. a distillation kettle; 2. a condenser; 3. a vacuum buffer tank; 4. a vacuum unit; 5. a regeneration oil tank; 6. a light component tank; 7. a slag tank; 8. a heater; 9. a circulation pump; 10. the pump is shielded.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in the attached figure 1, the invention provides vehicle-mounted heat-conducting oil online regeneration equipment, which comprises a distillation kettle 1, a condenser 2, a vacuum buffer tank 3, a vacuum unit 4, a regeneration oil tank 5, a light component tank 6, a slag tank 7, a heater 8, a circulating pump 9 and a shielding pump 10, wherein one side of the distillation kettle 1 is connected with a heat-conducting oil system through an oil supply pipeline, the condenser 2 is connected above the distillation kettle 1, one end of the condenser 2 is respectively connected with the regeneration oil tank 5 and the light component tank 6 through pipelines, one end of the condenser 2, which is far away from the distillation kettle 1, is also connected with the vacuum buffer tank 3 through a pipeline, the vacuum buffer tank 3 is connected with the vacuum unit 4, the vacuum unit 4 is formed by combining an oil-free reciprocating vacuum pump and a Roots pump, the right lower part of the distillation kettle 1 is connected with the slag tank 7 through a pipeline, the left side of the lower part of the distillation kettle 1 is connected with the heater 8, one end of the heater 8, which is far away from the distillation still 1, is connected with a circulating pump 9, the other end of the circulating pump 9 is connected with the distillation still 1, the lower part of the regenerated oil tank 5 is connected with a shield pump 10, and the other end of the shield pump 10 is connected with an oil return pipeline.

Specifically, the distillation still 1 is used for distilling heat conducting oil, and can separate light components, regenerated oil and residues respectively.

Specifically, the condenser 2 can cool and separate light components and regenerated oil distilled from the distillation still 1.

Specifically, the regeneration oil tank 5 is used for collecting and storing the regeneration oil separated from the distillation still, the light component tank 6 is used for collecting and storing the light component distilled from the distillation still 1 at first, and the slag tank 7 is used for collecting and storing the slag which can not be distilled out from the distillation still.

Specifically, the heater 8 can provide a heat source for distillation of the distillation still 1, and the circulating pump 9 provides circulating power for heating of the distillation still 1.

Specifically, the canned motor pump 10 is used to transport the regeneration oil in the regeneration oil tank 5 back to the thermal oil system.

Specifically, as shown in fig. 2, the regeneration steps of the regeneration equipment are as follows:

s1: firstly, an oil supply pipeline in a heat conduction oil system is connected with a distillation still 1, during regeneration, heat conduction oil in the heat conduction oil system enters the distillation still 1 through the oil supply pipeline, the temperature in the distillation still 1 is constantly changed and is always in a vacuum state, wherein the vacuum state is provided by a vacuum component, the boiling point of each fraction of the heat conduction oil in the distillation still 1 can be reduced when the heat conduction oil is in the vacuum state, the evaporation of a product is facilitated, the temperature is provided by the self temperature of the heat conduction oil system, if the temperature is insufficient, the heating is carried out by a heater 8, and different temperatures ensure that each fraction is continuously evaporated;

s2: because the boiling point of the light component is the lowest, the light component is firstly evaporated out from the distillation kettle 1 at the vacuum of more than-0.07 MPa and the temperature of 150-;

s3: along with the continuous increase of the temperature, at the vacuum of more than-0.095 MPa and the temperature of 230-;

s4: finally, separating the slag which can not be evaporated in the distillation still 1 into a slag tank 7;

s5: and after the regeneration of the first kettle is finished, repeating the steps S1-S4, performing the regeneration distillation of the next kettle, repeating the steps, continuously regenerating, and continuously improving the indexes of the heat conduction oil in the system until the indexes reach the qualified standard.

Application example 1:

the invention is used for on-line regeneration of hydrogenated terphenyl heat conduction oil in a chemical fiber plant, the production of the plant is normally carried out, the temperature for removing light components is between 150 and 250 ℃, the temperature of regenerated oil is between 250 and 315 ℃, the closed flash point of the heat conduction oil index in the system is increased from 80 ℃ to 160 ℃, the carbon residue is reduced from 1.8 percent to 0.4 percent, the heat conduction oil index is repaired, the production is not influenced, the treatment cost is greatly reduced, and the potential safety hazard of the system is eliminated.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.