Oil gas freezing recovery device of dirty oil ultrasonic separation device

Abstract

The utility model relates to the technical field of sump oil tail gas recovery, in particular to an oil-gas freezing recovery device of a sump oil ultrasonic separation device, which comprises a recovery tank and a separation tank, a recovery mechanism is arranged in the recovery tank, a separation mechanism is arranged in the separation tank, one side of the recovery tank is connected with an oil-gas pipe, and the other side of the recovery tank is connected with an oil-gas pipeline. According to the oil-gas recovery device, tail gas collection, pressurization and oil-gas freezing recovery are conducted on the dirty oil ultrasonic separation device, light gas is changed into liquid gas, oil-gas recovery is achieved, the oil-gas recovery efficiency is improved, the oil-gas recovery efficiency is improved, the oil-gas recovery cost is reduced, and the oil-gas recovery efficiency is improved. The heating cavity is arranged below the precooler, the first-stage condensation box and the second-stage condensation box, heat of the heating cavity comes from high-temperature overheated steam exhausted by the refrigeration compressor, and the steam is used for heating condensate oil, so that the exhaust temperature of the compressor is reduced, the equipment is more energy-saving, the oil temperature of the oil outlet pipe is increased, and meanwhile, the oil outlet pipe is prevented from being blocked by ice.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil tail gas recovery technical field, concretely is oil ultrasonic separation device oil gas refrigeration recovery device. BACKGROUND

[0002] Oil gas recovery device utilizes refrigeration technology to replace the heat of oil gas, realizes the direct conversion of oil gas component from gas phase to liquid phase. Condensation method is the method of recovering oil gas by using the difference of vapor pressure of hydrocarbon substances at different temperatures, through temperature reduction to make the vapor pressure of some hydrocarbon in oil gas reach supersaturated state, and the supersaturated vapor is condensed into liquid state. Generally, multistage continuous cooling method is adopted to reduce the temperature of oil gas, so that it is condensed into liquid for recovery. According to the composition of volatile gas, the required recovery rate and the concentration limit value of organic compounds in tail gas discharged into the atmosphere, the minimum temperature of the condensing device is determined. Generally, precooling, mechanical refrigeration and other steps are adopted to realize it.

[0003] Because the light hydrocarbon in the dirty oil is easy to volatilize during ultrasonic separation, a very serious oil fixed emission source is generated, and oil gas recovery device needs to be used for oil gas recovery. Through tail gas collection of the dirty oil ultrasonic separation device, and through pressurization and oil gas refrigeration recovery, the gaseous hydrocarbon becomes liquid again, so that the oil gas recovery is realized. UTILITY MODEL CONTENT

[0004] The utility model aims at providing dirty oil ultrasonic separation device oil gas refrigeration recovery device to solve the problems in the above background technology.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] Dirty oil ultrasonic separation device oil gas refrigeration recovery device, including recovery tank and separation tank, the inside installation of recovery tank is provided with recovery mechanism, the inside installation of separation tank is provided with separation mechanism, one side of recovery tank is connected with oil gas pipe, the inside installation of oil gas pipe is provided with fan, the other end of oil gas pipe is connected and set up on condensation main part;

[0007] The recovery mechanism comprises a condensing body, a condensing pipe and a refrigeration compressor, one side of the inside of the recovery tank is provided with a condensing box one, the other side of the condensing box one is provided with a condensing box two, the condensing box one and the condensing box two are both provided with the condensing body, the inside of the condensing box one and the condensing box two is provided with the refrigeration compressor, the output end of the refrigeration compressor is provided with the condensing pipe, the inside of the recovery tank is provided with a pre-cooler, the bottom end of the condensing box one and the condensing box two is provided with a heating cavity, oil gas recovery is carried out by adopting the method of pressurization and condensation adsorption, the tail gas entering the refrigeration recovery device is first subjected to pressurization treatment, the water vapor and the relatively heavy light oil components are first recovered, the oil gas is condensed to about -75 DEG C through two-stage condensation, most of the oil gas is liquefied, the remaining oil gas is subjected to adsorption through the adsorption tank, due to the adsorption difference between the air components and the oil gas components, the difficult-to-adsorb air components are separated from the easy-to-adsorb oil gas components, the air components are discharged after being subjected to alkali washing, and the oil gas components are adsorbed by the adsorbent and then recovered through a regeneration process. The light oil gas recovery is realized to the maximum extent.

[0008] Preferably, the separation mechanism comprises an ultrasonic device and an oil outlet, the inside of the separation tank is provided with the ultrasonic device, and one side of the separation tank is provided with the oil outlet. The oil separated is discharged from the oil outlet through the ultrasonic device in the inside of the separation tank and the oil outlet.

[0009] Preferably, one side of the recovery tank is provided with a connecting pipe, one end of the connecting pipe is provided with an adsorption tank one, the inside top end of the adsorption tank one is provided with a punch press, the inner wall of the adsorption tank one is provided with adsorption material, the inside of the adsorption tank one is provided with an inlet and outlet pipe, one side of the adsorption tank one is provided with a discharge pipe, and the inside of the adsorption tank one is provided with a washing pipe. The adsorption system is subjected to adsorption-vacuumization-pressurization alternately through two adsorption tanks. The remaining oil gas components in the adsorption tank one are adsorbed under normal pressure, the system is automatically switched to the adsorption tank two for adsorption treatment when the adsorption is saturated, the adsorbent is regenerated through vacuum desorption of the adsorption tank one, part of the oil gas desorbed is subjected to next cycle condensation treatment in the gas collecting tank, and the other part is subjected to absorption treatment in the oil collecting tank.

[0010] Preferably, one side of the adsorption tank one is provided with an adsorption tank two through a pipe, the adsorption tank two is the same as the adsorption tank one, and the two adsorption tanks are subjected to adsorption-vacuumization-pressurization alternately, so that uninterrupted adsorption work is realized.

[0011] Preferably, the other end of the adsorption tank 2 is provided with a pipeline connection of an absorption tower, the inside of the absorption tower is provided with a circulating pipeline, the bottom end of the pipeline is provided with a storage tank, the upper part of the pipeline is filled with an absorbent, and the top end of the absorption tower is provided with a flame arrester, through the absorption tower, the oil gas is in full contact with the upward and reverse uniform flow of the absorbent and is dissolved in the absorbent, the absorbent flows into the bottom of the absorption tower and enters the storage tank, the organic gas is collected and recovered, and the absorbed tail gas is discharged through the flame arrester at a high altitude after alkaline washing.

[0012] Preferably, the other end of the absorption tower is connected with an oil collecting tank, the inside bottom end of the oil collecting tank is provided with an oil pump, and the other end of the oil pump is connected with an ultrasonic device, when the oil collecting tank is full, the oil pump is automatically started to send the oil to the ultrasonic device, so that the oil is separated out.

[0013] Compared with the prior art, the oil gas freezing recovery device for the waste oil ultrasonic separation device has the advantages that:

[0014] 1. The oil gas freezing recovery device for the waste oil ultrasonic separation device collects tail gas through the waste oil ultrasonic separation device, and then carries out pressurization and oil gas freezing recovery, so that gaseous hydrocarbons are changed into liquid, and the recovery of oil gas is realized.

[0015] 2. The oil gas freezing recovery device for the waste oil ultrasonic separation device adopts the method of pressurization, condensation and adsorption to recover oil gas, the tail gas entering the freezing recovery device is first subjected to pressurization treatment, and the water vapor and relatively heavy light oil components are first recovered, and then the oil gas is condensed to about -75 DEG C through the secondary condensation, so that most of the oil gas is liquefied, and the remaining oil gas is subjected to adsorption through the adsorption tank. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a front view structure schematic view of the utility model;

[0018] Figure 3 It is part plane schematic view of the recycling mechanism of the utility model figure;

[0019] Figure 4 It is part plane schematic view of the adsorption tank one and adsorption tank two of the utility model figure.

[0020] Figure: 1, recycling tank;2, separation tank;3, recycling mechanism;301, condensing main body;302, condensing pipe;303, refrigeration compressor;304, condensing box one;305, condensing box two;306, pre-cooler;307, heating cavity;4, separation mechanism;401, ultrasonic device;402, oil outlet;5, oil gas pipe;6, fan;7, connecting pipe;8, adsorption tank one;9, adsorption tank two;10, punch;11, adsorption material;12, import and export pipeline;13, discharge pipeline;14, washing pipeline;15, absorption tower;16, circulating pipeline;17, storage tank;18, absorbent;19, fire arrestor;20, oil collecting tank;21, oil pump. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 A technical scheme provided by the utility model:

[0023] The oil gas refrigeration recycling device of the oil ultrasonic separation device comprises a recycling tank 1 and a separation tank 2, the recycling tank 1 is internally provided with a recycling mechanism 3, the separation tank 2 is internally provided with a separation mechanism 4, one side of the recycling tank 1 is connected with an oil gas pipe 5, the oil gas pipe 5 is internally provided with a fan 6, and the other end of the oil gas pipe 5 is connected to a condensing main body 301.

[0024] The recovery mechanism 3 includes a condensing body 301, a condensing pipe 302 and a refrigeration compressor 303. A condensing box 1 304 is installed on one side of the interior of the recovery tank 1, and a condensing box 2 305 is installed on the other side of the condensing box 1 304. Both the condensing box 1 304 and the condensing box 2 305 are connected to the condensing body 301. The refrigeration compressor 303 is arranged inside the condensing box 1 304 and the condensing box 2 305. The output end of the refrigeration compressor 303 is connected to the condensing pipe 302. A precooler 306 is installed inside the recovery tank 1. The condensing box 1 304 and the condensing box 2 305 are connected to the condensing body 301. A heating chamber 307 is installed at the bottom of the unit. Oil and gas recovery is achieved through a combination of pressurization, condensation, and adsorption. The tail gas entering the refrigeration recovery unit is first pressurized to recover water vapor and relatively heavy light oil components. Secondary condensation then condenses the oil and gas to approximately -°C, liquefying most of the oil and gas. The remaining oil and gas is then adsorbed in an adsorption tank. Due to the differential adsorption properties of air and oil and gas components, the difficult-to-adsorb air components are separated from the easily adsorbable oil and gas components. The air components are then alkaline-washed and discharged. After the oil and gas components are adsorbed by the adsorbent, they are recovered through a regeneration process, achieving maximum light oil and gas recovery.

[0025] In this embodiment, preferably, the separation mechanism 4 includes an ultrasonic device 401 and an oil outlet 402. The ultrasonic device 401 is installed inside the separation tank 2, and an oil outlet 402 is opened on one side of the separation tank 2. Through the ultrasonic device 401 inside the separation tank 2 and the oil outlet 402 on one side, the separated oil is discharged from the oil outlet 402.

[0026] In this embodiment, preferably, a connecting pipe 7 is connected to one side of the recovery tank 1, and an adsorption tank 8 is connected to one end of the connecting pipe 7. A punch 10 is installed on the top of the interior of the adsorption tank 8, and an adsorption material 11 is installed on the inner wall of the adsorption tank 8. An inlet and outlet pipe 12 is installed inside the adsorption tank 8, a discharge pipe 13 is installed on one side of the adsorption tank 8, and a washing pipe 14 is installed inside the adsorption tank 8. By entering the adsorption system, the adsorption system alternately performs an adsorption-evacuation-pressurization process by two adsorption tanks. The remaining oil and gas components in the adsorption tank 8 under normal pressure, when the adsorption is saturated, the system automatically cuts into the adsorption tank 2 9 for adsorption treatment, and at the same time, the adsorption tank 8 performs vacuum desorption to regenerate the adsorbent. Part of the desorbed oil and gas enters the gas collecting tank for the next cycle condensation treatment, and the other part enters the side of the oil collecting tank 20 for absorption treatment.

[0027] In this embodiment, preferably, one side of the adsorption tank 1 8 is connected to the adsorption tank 2 9 through a pipeline. The adsorption tank 2 9 has the same structure as the above-mentioned adsorption tank 1 8. The adsorption-evacuation-pressurization process is alternately performed by the two adsorption tanks, thereby achieving uninterrupted adsorption work.

[0028] In this embodiment, preferably, the other end of the adsorption tank 2 is connected by a pipeline to an absorption tower 15, the interior of the absorption tower 15 is provided with a circulating pipeline 16, the bottom end of the pipeline is provided with a storage tank 17, the upper part of the pipeline is filled with an absorbent 18, the top end of the absorption tower 15 is provided with a flame arrester 19. In the absorption tower 15, the oil gas flows upward and downward in the absorbent 18, fully contacts the absorbent 18, and is dissolved in the absorbent 18. The absorbent 18 flows downward to the bottom of the absorption tower 15 and enters the storage tank 17. The organic gas is collected and recovered here. The absorbed tail gas is washed with lye and is safely discharged at high altitude through the flame arrester 19.

[0029] In this embodiment, preferably, the other end of the absorption tower 15 is connected to an oil collection tank 20. The bottom end of the interior of the oil collection tank 20 is provided with an oil pump 21. The other end of the oil pump 21 is connected to an ultrasonic device 401. When the oil collection tank 20 is full, the oil pump 21 is automatically started and the oil is sent to the oil ultrasonic device 401, so that the oil is separated out.

[0030] When the oil-gas refrigeration recovery device of the waste oil ultrasonic separation device of this embodiment is in use, the tail gas collected by the waste oil ultrasonic separation device is sent to the condensing host along the oil and gas pipe 5 by the fan 6. The tail gas is cooled by multiple stages in the condensing host. It is first pressurized and cooled to separate out some oil and water. Then it enters the first-stage condenser and is cooled to -°C. Then it separates out some oil. Then it enters the second-stage condenser and is cooled to -°C. Further, it separates out some oil. At this point, more than about % of hydrocarbon components are separated. The low-temperature oil-poor gas after the oil is separated returns to the first-stage condenser and the regenerative precooler 306 in turn for heat exchange, and the temperature rises back to normal. When the temperature reaches approximately ℃, it enters the adsorption system. The adsorption system consists of two adsorption tanks that alternately undergo an adsorption-evacuation-pressurization process. Under normal pressure, tank A adsorbs the remaining oil and gas components in the raw material. When the adsorption is saturated, the system automatically switches to tank B for adsorption treatment. At the same time, tank A undergoes vacuum desorption to regenerate the adsorbent. Part of the desorbed oil and gas enters the gas collection tank for the next cycle of condensation treatment, while the other part enters the oil side of oil collection tank 20A for absorption treatment. Most of the oil and gas are absorbed, and the remaining small amount of oil and gas that is not absorbed enters the gas collection tank through the balance pipe. The exhaust gas separated by the adsorption system is absorbed by the absorption system. In absorption tower 15, the oil and gas fully contact and dissolve in the absorbent 18 flowing in the opposite direction from bottom to top. The absorbent 18 flows downward to the bottom of absorption tower 15 and enters storage tank 17, where the organic gas is collected and recovered. The absorbed exhaust gas is alkali-washed and safely discharged at high altitude through flame arrester 19. The oily water produced by condensation is drained into an oil collection tank 20. When the tank is full, oil pump 21 automatically activates and sends the oil to the ultrasonic oil separation device for separation. During operation, all cooling capacity is used to overcome the latent heat of vaporization of the oil and gas, converting the oil and gas into condensate for recycling, achieving energy conservation and environmental protection while also generating significant economic benefits.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. Waste oil ultrasonic separation device oil gas freezing recovery device, including a recovery tank (1) and a separation tank (2), characterized by: A recovery mechanism (3) is installed inside the recovery tank (1), a separation mechanism (4) is installed inside the separation tank (2), an oil and gas pipe (5) is connected to one side of the recovery tank (1), a fan (6) is installed inside the oil and gas pipe (5), and the other end of the oil and gas pipe (5) is connected to the condensation body (301); The recovery mechanism (3) includes a condensing body (301), a condensing pipe (302) and a refrigeration compressor (303); a condensing box (304) is installed on one side of the interior of the recovery tank (1); a condensing box (305) is installed on the other side of the condensing box (304); the condensing box (304) and the condensing box (305) are both connected to the condensing body (301); a refrigeration compressor (303) is arranged inside the condensing box (304) and the condensing box (305); the output end of the refrigeration compressor (303) is connected to the condensing pipe (302); a precooler (306) is installed inside the recovery tank (1); and a heating chamber (307) is installed at the bottom end of the condensing box (304) and the condensing box (305).

2. The oil-gas refrigeration recovery device for waste oil ultrasonic separation device according to claim 1 is characterized by: The separation mechanism (4) comprises an ultrasonic device (401) and an oil outlet (402); the ultrasonic device (401) is installed inside the separation tank (2); and the oil outlet (402) is opened on one side of the separation tank (2).

3. The oil-gas refrigeration recovery device for waste oil ultrasonic separation device according to claim 1 is characterized by: One side of the recovery tank (1) is connected to a connecting pipe (7), one end of the connecting pipe (7) is connected to an adsorption tank (8), a punching machine (10) is installed on the top end of the adsorption tank (8), an adsorption material (11) is installed on the inner wall of the adsorption tank (8), an inlet and outlet pipe (12) is installed inside the adsorption tank (8), a discharge pipe (13) is installed on one side of the adsorption tank (8), and a washing pipe (14) is installed inside the adsorption tank (8).

4. The oil-gas refrigeration recovery device for waste oil ultrasonic separation device according to claim 3 is characterized by: One side of the adsorption tank 1 (8) is connected to an adsorption tank 2 (9) via a pipeline, and the adsorption tank 2 (9) has the same structure as the adsorption tank 1 (8).

5. The oil-gas refrigeration recovery device for waste oil ultrasonic separation device according to claim 4 is characterized by: The other end of the adsorption tank (9) is connected to an absorption tower (15) via a pipeline. A circulation pipeline (16) is installed inside the absorption tower (15). A storage tank (17) is installed at the bottom end of the pipeline. An absorbent (18) is filled above the pipeline. A flame arrester (19) is installed at the top of the absorption tower (15).

6. The oil-gas refrigeration recovery device for waste oil ultrasonic separation device according to claim 5, characterized in that: The other end of the absorption tower (15) is connected to an oil collecting tank (20), an oil pump (21) is installed at the bottom end of the oil collecting tank (20), and the other end of the oil pump (21) is connected to an ultrasonic device (401).

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