CN220786924U - Device for collecting and reinjection of breathing gas of oil product storage tank - Google Patents
Device for collecting and reinjection of breathing gas of oil product storage tank Download PDFInfo
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- CN220786924U CN220786924U CN202322482055.8U CN202322482055U CN220786924U CN 220786924 U CN220786924 U CN 220786924U CN 202322482055 U CN202322482055 U CN 202322482055U CN 220786924 U CN220786924 U CN 220786924U
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- 238000003860 storage Methods 0.000 title claims abstract description 86
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 183
- 239000007788 liquid Substances 0.000 claims abstract description 94
- 238000000926 separation method Methods 0.000 claims abstract description 64
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 16
- 230000000241 respiratory effect Effects 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims description 129
- 239000000295 fuel oil Substances 0.000 claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- 239000000047 product Substances 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000006227 byproduct Substances 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 5
- 239000012855 volatile organic compound Substances 0.000 abstract description 4
- 239000002912 waste gas Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 235000019198 oils Nutrition 0.000 description 102
- 238000000034 method Methods 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- -1 rare earth modified zinc oxide Chemical class 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to the technical field of oil gas or VOCs waste gas treatment devices, in particular to a respiratory gas collecting and reinjection device of an oil product storage tank, which comprises the following components: a gas-liquid separation tank, a membrane separation tank, a desulfurizing agent tank, an oil-gas compression device and an oil-gas storage tank. The gas-liquid separation tank is connected with the membrane separation tank, the membrane separation tank is connected with the desulfurizing agent tank, and the outlet end of the oil-gas compression device is connected with the inlet end of the oil-gas storage tank through a pipeline. According to the utility model, the oil gas in the oil product storage tank is collected and reinjected into the device for cooling down the oil gas, and then centralized treatment is carried out, no byproduct treatment link exists, and the gas in the reinjected oil product storage tank can accelerate the formation of a gas phase space balance state in the tank, so that the phenomenon of small respiration is shortened and inhibited, the reduction of the respiratory gas is realized, the environment-friendly treatment concept is more met, and meanwhile, the economic benefit of production is increased.
Description
Technical Field
The utility model relates to the technical field of oil gas or VOCs waste gas treatment devices, in particular to a respiratory gas collecting and reinjection device of an oil product storage tank.
Background
According to emission standard of atmospheric pollutants in the land petroleum and natural gas exploitation industry (GB 39728-2020), the processes of crude oil dehydration, storage and loading and unloading of part of crude oil tank areas are not completely closed, so that the crude oil tank which does not meet the emission standard specification needs is required to be modified, a full-closed process flow is realized, and zero emission of VOCs is achieved.
The device is mainly used for recovering oil gas or VOCs waste gas generated by the respiration of the oil storage tank, and the pressurized oil gas is sent into an external pipe network or is used as sealing gas of the crude oil storage tank after decompression.
Specifically, the gas generated by oil tank respiration is discharged outside the storage tank through a breather valve at the top of the tank, then the gas discharged outside the storage tank is collected through pipe fittings such as a pipeline valve, the oil gas from the storage tank area enters a buffer tank in an oil storage tank respiratory gas collecting and reinjection device after being cooled, the oil gas after pressure stabilization enters a gas supercharging device, the oil gas is pressurized through the gas supercharging device, the pressurized oil gas enters a subsequent gas storage tank after being cooled again, and the oil gas after pressure stabilization and gas-liquid separation is fed into an external pipe network or is used as sealing gas of the storage tank after being decompressed, so that the method is suitable for use.
The existing mature oil tank respiratory gas treatment technology mainly comprises RTO, RCO, condensation recovery and the like, and the process routes can basically meet the oil tank respiratory gas treatment requirements, but still have a plurality of problems.
1. Oil gas generated by oil tank respiration is divided into large respiration generated by oil inlet, daily temperature and air pressure change and small respiration generated by the volatilization characteristic of the oil product according to different production operations. The breathing gas is a small breath with a small gas volume for most of the daily time of the tank. The RTO and RCO technologies are adopted to treat the oil tank respiratory gas, and the collecting end needs continuous induced draft to form negative pressure, so that the respiratory gas volume is continuously increased, although the treatment is carried out at the rear end, the increment behavior does not accord with the underlying logic and concept of environmental protection treatment, and meanwhile, the oil product decrement can greatly reduce the economical efficiency.
2. The concentration of the breathing gas in the oil tank cannot reach the energy consumption required by RTO, RCO and other treatment technologies, so that the need for adding a natural device is overcome. The later operation cost of the technical route is high.
3. RTO, RCO technique are based on the combustion classification of oil gas, because breathing oil gas belongs to combustible gas, terminal equipment inlet gas concentration needs to be controlled below LEL explosion off-line. If the operation is improper, the concentration of the inlet air is above the lower explosion limit of the LEL, the explosion is easy to cause, and the safety risk is high.
4. The disqualification of the condensed and recovered tail gas requires a matched waste gas treatment facility (an activated carbon adsorption device), the investment of the whole equipment and the operation and maintenance cost are high, and the economic feasibility is poor. And the components of breathing gas are complex like non-finished oil tanks such as crude oil tanks, and the components are difficult to be fully condensed and recovered by a primary cooling device. The components that can be condensed and recovered by the cryogenic device are improved, but the cryogenic device cannot fully condense and recover all the components. And the investment of the cryogenic device is high.
Disclosure of Invention
First, the technical problem to be solved
The technical problem to be solved by the utility model is to overcome the technical problem and provide the device for collecting and reinjection of the breathing gas of the oil storage tank.
(II) technical scheme
In order to solve the above problems, the present utility model provides a device for collecting and reinjection of respiratory gas from an oil storage tank, comprising: a gas-liquid separation tank, a membrane separation tank, a desulfurizing agent tank, an oil-gas compression device and an oil-gas storage tank;
the outlet end of the oil product storage tank is connected with the inlet end of the gas-liquid separation tank through a pipeline;
the lower outlet end of the gas-liquid separation tank is connected with the inlet end of the oil product storage tank through a pipeline;
the upper outlet end of the gas-liquid separation tank is connected with the inlet end of the membrane separation tank through a pipeline, the outlet end of the membrane separation tank is connected with the inlet end of the desulfurizing agent tank through a pipeline, and the outlet end of the desulfurizing agent tank is connected with the inlet end of the oil-gas compression device through a pipeline;
the outlet end of the oil gas compression device is connected with the inlet end of the oil gas storage tank through a pipeline;
the first outlet end of the oil gas storage tank is connected with a natural gas pipe network or a combustion furnace, and the second outlet end of the oil gas storage tank is connected with the gas-liquid separation tank through a pipeline.
Further, the system also comprises a first gas-liquid heat exchanger; the first gas-liquid heat exchanger is arranged on a pipeline at the inlet end of the gas-liquid separation tank.
Further, the device also comprises a second gas-liquid heat exchanger; the second gas-liquid heat exchanger is arranged on a pipeline at the inlet end of the oil-gas storage tank.
Further, the automatic valve further comprises a first automatic switch valve and a second automatic switch valve;
the first automatic switching valve is arranged at the inlet end of the first gas-liquid heat exchanger;
a collecting pipeline temperature sensor, a collecting pipeline oxygen content analyzer and a collecting pipeline pressure sensor are arranged at the front end of the first automatic switching valve;
the front end of the first automatic switching valve is provided with an emergency evacuation pipeline, and the emergency evacuation pipeline is provided with a second automatic switching valve.
Further, the header line pressure sensor is set to a high reporting value of 500Pa and a low reporting value of 200Pa.
Further, the device also comprises a gas-liquid separation tank thermometer, a gas-liquid separation tank pressure gauge and a gas-liquid separation tank liquid level gauge, wherein the gas-liquid separation tank thermometer, the gas-liquid separation tank pressure gauge and the gas-liquid separation tank liquid level gauge are arranged on the gas-liquid separation tank.
Further, the device also comprises an oil and gas storage tank thermometer, an oil and gas storage tank pressure sensor and an oil and gas storage tank liquid level meter; the oil gas storage tank thermometer, the oil gas storage tank pressure sensor and the oil gas storage tank liquid level meter are arranged on the oil gas storage tank.
Further, the heavy oil gas entering from the inlet end of the oil gas compression device and the heavy oil gas which is pressurized from 0.2KPa to 0.5-0.6MPa is discharged from the outlet end.
(III) beneficial effects
The technical scheme of the utility model has the following advantages:
1. the oil product converted after the oil gas is cooled down can be intensively treated, no by-product treatment link exists, and the gas in the reinjection oil product storage tank can accelerate the formation of a gas phase space balance state in the tank, so that the phenomenon of small respiration is shortened and inhibited, the reduction of the respiratory gas is realized, the environment-friendly treatment concept is more met, and meanwhile, the economic benefit of production is increased.
2. The whole set of treatment device forms closed loop treatment, no other byproducts are generated, and the treated redundant oil gas can be used as fuel to be supplemented to a gas pipeline, so that the energy is saved and the environment is protected.
Drawings
The drawings of the present utility model are provided for illustrative purposes only and the proportion and the number of the parts in the drawings do not necessarily coincide with the actual product.
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the respiratory gas collecting and reinjection device for the oil storage tank provided by the embodiment of the utility model is used for cooling and separating the light component part in respiratory gas, compressing and pressurizing the separated gas by using an oil gas compression device, and finally conveying the compressed gas to a gas pipeline for realizing the inhibition and recovery of the oil gas respiratory gas. The device is of a box type skid-mounted structure, and an oil gas inlet and an oil gas outlet are reserved in the device. Specifically, the device comprises a gas-liquid separation tank 2, a membrane separation tank 25, a desulfurizing agent tank 26, an oil-gas compression device 3 and an oil-gas storage tank 5.
The outlet end of the oil storage tank 6 is provided with a liquid oil-water mixing and conveying pump 7, the whole liquid oil-water mixing and conveying pump 7 adopts a horizontal pump, and the overflow part is made of stainless steel. The oil storage tank 6 is provided with a remote liquid level 24, and when the liquid level exceeds a high report set value, the oil delivery pump 7 is started. The liquid level alarm is displayed on an instrument panel of the PLC control cabinet, and the oil product conveying pump 7 can be started to operate on the PLC or on an on-site operation column.
As shown in fig. 1, a is connected to a. The outlet end of the oil product storage tank 6 is connected with the inlet end of the gas-liquid separation tank 2 through a pipeline; the gas-liquid separation tank 2 adopts a vertical double-seal-head storage tank, and is made of stainless steel. The first gas-liquid heat exchanger 1 is arranged on a pipeline at the inlet end of the gas-liquid separation tank 2. The first gas-liquid heat exchanger 1 adopts a plate heat exchanger, and is made of stainless steel, and the gas-liquid countercurrent heat exchange is realized. The gas-liquid separation tank 2 is used for buffering volatile oil gas and separating gas from liquid, the lower part of the gas-liquid separation tank 2 is mainly used for collecting liquid oil-water mixture, and the upper part of the gas-liquid separation tank is mainly used for storing the oil gas. The light gas in the specific oil product breathing gas is cooled and converted into light oil. The cooled oil gas enters from the middle part of the gas-liquid separation tank 2, the light oil gathers at the lower part of the storage tank, and the light oil is conveyed back to the oil storage tank 6 after reaching the limited liquid level. Heavy oil gas gathers in the upper portion of the storage tank, and enters subsequent treatment equipment through a tank top outlet pipeline.
The first automatic switching valve 8 is arranged at the inlet end of the first gas-liquid heat exchanger 1; a header pipeline temperature sensor 14, a header pipeline oxygen content analyzer 15 and a header pipeline pressure sensor 16 are arranged at the front end of the first automatic switching valve 8. The manifold temperature sensor 14, the manifold oxygen content analyzer 15, and the manifold pressure sensor 16 form a linkage control with the gas pressurizing device 3. The gas supercharging device 3 is a frequency conversion device, and frequency adjustment is performed according to working condition values of the main pipeline temperature sensor 14, the main pipeline oxygen content analyzer 15 and the main pipeline pressure sensor 16. The collecting main pipeline pressure sensor 16 sets a high report value of 500Pa and a low report value of 200Pa; when the pressure of the collecting pipe reaches a high report value, the gas supercharging device 3 is automatically opened, and when the pressure of the collecting pipe reaches a low report value, the gas supercharging device 3 is automatically closed, and the whole process is automatically controlled by the PLC.
An emergency evacuation pipeline is arranged at the front end of the first automatic switching valve 8, and a second automatic switching valve 9 is arranged on the emergency evacuation pipeline.
The gas-liquid separation tank 2 is provided with a gas-liquid separation tank thermometer 17, a gas-liquid separation tank pressure gauge 18 and a gas-liquid separation tank liquid level gauge 22. The numerical value of the gas-liquid separation tank liquid level meter 22 is displayed on the dial of the PLC control cabinet, and when the liquid level exceeds the specified liquid level, the lower part of the gas-liquid separation tank 2 is manually opened by a manual switch valve, so that the oil product is conveyed into the oil product storage tank 6. The gas-liquid separation tank 2 is also provided with a gas-liquid separation tank safety valve 12.
The lower outlet end of the gas-liquid separation tank 2 is connected with the inlet end of the oil storage tank 6 through a pipeline.
The upper outlet end of the gas-liquid separation tank 2 is connected with the inlet end of the membrane separation tank 25 through a pipeline. The membrane separation tank 25 performs deep gas-liquid separation of the oil gas of the simple gas-liquid separation. The membrane separation tank 25 is a vertical storage tank, the membrane is a high-efficiency proton membrane, and the membrane separation tank 25 is made of stainless steel. The oil gas after simple treatment enters the gas-liquid separation tank 2 for deep separation, and the high-efficiency proton membrane is a normal pressure separation membrane, so that the power required for separating the oil gas is very small.
The outlet end of the membrane separation tank 25 is connected with the inlet end of the desulfurizing agent tank 26 through a pipeline, and the deep gas-liquid separated oil gas is subjected to desulfurization treatment after entering the desulfurizing agent tank 26. The desulfurizing agent can be rare earth modified zinc oxide composite absorbent, and the absorbent adopts layered arrangement and can be used according to H in oil gas 2 S gas concentration value, filling quantity of desulfurizing agent is formulated, and H is ensured 2 Removal rate of S gas. Preferably, the desulfurizing agent tank 26 is a vertical storage tank, and is made of materialsIs made of stainless steel.
The outlet end of the desulfurizing agent tank 26 is connected with the inlet end of the oil-gas compression device 3 through a pipeline. The oil-gas compression device 3 is a horizontal type fuel oil gas compressor, a piston type or screw type supercharging device can be selected according to the air quantity, and the whole supercharging device needs to be explosion-proof. The membrane separation tank 25 and the desulfurizing agent tank 26 mainly treat the water content and H in the oil gas 2 S gas content. The water content in the oil gas is too high to influence subsequent treatment equipment, the water content in the oil gas can be mixed with the oil seal of the oil gas compression device 3, and when the water content reaches a certain degree, the oil seal can be emulsified, so that the lubrication effect of the oil seal cannot be achieved. H in oil and gas 2 When the S gas enters the inside of the machine head of the flammable gas compressor, the S gas can corrode the internal components of the machine head, and the service life of the oil gas compression device 3 is seriously influenced.
The oil gas after gas-liquid separation and desulfurization treatment is heavy oil gas with the pressure of 0.2KPa, the heavy oil gas with the pressure of 0.2KPa is conveyed to the inlet end of the oil gas compression device 3, and the heavy oil gas is compressed and pressurized to the pressure of 0.5-0.6MPa by the oil gas compression device 3, so that the mass density of the heavy oil gas is increased. And discharging the heavy oil gas with the pressure of 0.5-0.6MPa from the outlet end of the oil gas compression device 3 to the oil gas storage tank 5. The outlet end of the oil gas compression device 3 is connected with the inlet end of the oil gas storage tank 5 through a pipeline; the second gas-liquid heat exchanger 4 is arranged on a pipeline at the inlet end of the oil-gas storage tank 5. The second gas-liquid heat exchanger 4 is used for oil-gas cooling. The cooling medium can be cooling water, the second gas-liquid heat exchanger 4 can be a plate heat exchanger, and the material is stainless steel. The pressurized heavy oil gas is conveyed to the second gas-liquid heat exchanger 4 for cooling, the cooled oil gas is conveyed to the oil-gas storage tank 5, and the oil-gas storage tank 5 further performs gas-liquid separation on the compressed oil gas. The oil gas will have heavy oil production in the storage process, and the heavy oil that produces will be enriched in the lower part of oil gas storage tank 5, reaches the certain liquid level after, carries in the oil storage tank 6.
The oil gas storage tank 5 is a vertical storage tank, is made of stainless steel, and is connected with a natural gas pipe network or a combustion furnace at a first outlet end, and separated oil gas can be used as combustion-supporting gas to be conveyed to the combustion furnace or to a natural gas pipe network for use.
The second outlet end of the oil gas storage tank 5 is connected with the gas-liquid separation tank 2 through a pipeline. The oil-gas storage tank 5 is provided with an oil-gas storage tank thermometer 19, an oil-gas storage tank pressure sensor 20 and an oil-gas storage tank liquid level meter 23. The oil and gas storage tank 5 is also provided with an oil and gas storage tank safety valve 13. The numerical value of the oil-gas storage tank liquid level gauge 23 is displayed on the dial of the PLC control cabinet, and when the liquid level exceeds the specified liquid level, the manual switch valve at the lower part of the oil-gas storage tank 5 is required to be manually opened, so that the oil product is conveyed into the oil product storage tank 6. The oil gas storage tank pressure sensor 20 is interlocked with the automatic switch valve 10 on the conveying pipeline and the automatic three-way valve 11 on the return pipeline. An orifice flowmeter tank 21 is provided at the front end of the automatic switching valve 10. When the internal pressure is too high, the automatic switching valve 10 on the conveying pipeline is automatically opened, and when the total pipeline oxygen content analyzer 15 exceeds a set value, the automatic switching valve on the reflux pipeline is automatically opened, and part of oil gas is refluxed into the total pipeline.
The respiratory gas collecting and reinjection device for the oil product storage tank has the following advantages:
1. the oil product converted after the oil gas is cooled down can be reinjected into the oil product storage tank, no byproduct treatment link exists, and the gas in the reinjection oil tank can accelerate the formation of the meteorological space balance state in the tank, so that the phenomenon of small respiration is shortened and inhibited, the reduction of the respiratory gas is realized, the environment-friendly treatment concept is more met, and meanwhile, the economic benefit of production is increased.
2. The whole set of treatment device forms closed loop treatment, no other byproducts are generated, and the treated redundant oil gas can be used as fuel to be supplemented to a gas pipeline, so that the energy is saved and the environment is protected.
3. The whole set of treatment device is in skid-mounted design, the occupied area of equipment is small, and the construction is convenient.
4. The whole equipment is provided with a combustible gas alarm instrument, an oxygen content detector and H 2 S gas detector, ventilation device, etc. The oxygen content detector controls the oxygen content of the oil gas volatile gas, and ensures that the oil gas volatile gas is below the explosion lower limit; combustible gas alarm instrument, H 2 The S gas detector can reduce potential safety hazards and harm of an operation interface and improve clean production level.
5. The PLC device capable of fully automatically running is arranged in the utility model, and consumable parts and wearing parts are not involved in the device, so that the production efficiency is improved, and the labor intensity of workers in daily production and running is reduced.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: not every embodiment contains only one independent technical scheme, and all technical features mentioned in every embodiment can be combined in any way to form other implementations which can be understood by those skilled in the art in case of no scheme conflict.
In addition, modifications may be made to the embodiments described in the foregoing, or equivalents may be substituted for elements thereof without departing from the scope of the utility model, so that the essence of the corresponding embodiments does not depart from the spirit and scope of the embodiments of the utility model.
Claims (8)
1. Reinjection device is collected to oil storage tank breathing gas, its characterized in that includes: a gas-liquid separation tank, a membrane separation tank, a desulfurizing agent tank, an oil-gas compression device and an oil-gas storage tank;
the outlet end of the oil product storage tank is connected with the inlet end of the gas-liquid separation tank through a pipeline;
the lower outlet end of the gas-liquid separation tank is connected with the inlet end of the oil product storage tank through a pipeline;
the upper outlet end of the gas-liquid separation tank is connected with the inlet end of the membrane separation tank through a pipeline, the outlet end of the membrane separation tank is connected with the inlet end of the desulfurizing agent tank through a pipeline, and the outlet end of the desulfurizing agent tank is connected with the inlet end of the oil-gas compression device through a pipeline;
the outlet end of the oil gas compression device is connected with the inlet end of the oil gas storage tank through a pipeline;
the first outlet end of the oil gas storage tank is connected with a natural gas pipe network or a combustion furnace, and the second outlet end of the oil gas storage tank is connected with the gas-liquid separation tank through a pipeline.
2. The oil storage tank breathing gas collection and reinjection device according to claim 1, further comprising a first gas-liquid heat exchanger; the first gas-liquid heat exchanger is arranged on a pipeline at the inlet end of the gas-liquid separation tank.
3. The oil storage tank breathing gas collection and reinjection device according to claim 2, further comprising a second gas-liquid heat exchanger; the second gas-liquid heat exchanger is arranged on a pipeline at the inlet end of the oil-gas storage tank.
4. The oil tank breathing gas collection and reinjection device according to claim 3, further comprising a first automatic switching valve and a second automatic switching valve;
the first automatic switching valve is arranged at the inlet end of the first gas-liquid heat exchanger;
a collecting pipeline temperature sensor, a collecting pipeline oxygen content analyzer and a collecting pipeline pressure sensor are arranged at the front end of the first automatic switching valve;
the front end of the first automatic switching valve is provided with an emergency evacuation pipeline, and the emergency evacuation pipeline is provided with a second automatic switching valve.
5. The device for collecting and reinjection of breathable gas in an oil product storage tank according to claim 4, wherein the collecting main pipeline pressure sensor is set to have a high report value of 500Pa and a low report value of 200Pa.
6. The apparatus of claim 5, further comprising a gas-liquid separator tank thermometer, a gas-liquid separator tank pressure gauge, and a gas-liquid separator tank level gauge, wherein the gas-liquid separator tank thermometer, the gas-liquid separator tank pressure gauge, and the gas-liquid separator tank level gauge are mounted on the gas-liquid separator tank.
7. The oil tank breathing gas collection and reinjection device according to claim 6, further comprising an oil tank thermometer, an oil tank pressure sensor, and an oil tank level gauge; the oil gas storage tank thermometer, the oil gas storage tank pressure sensor and the oil gas storage tank liquid level meter are arranged on the oil gas storage tank.
8. The device for collecting and reinjection of respiratory gases in oil storage tanks according to claim 7, wherein the heavy oil gas entering from the inlet end of the oil gas compression device and the heavy oil gas discharged from the outlet end is pressurized from 0.2KPa to 0.5-0.6 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322482055.8U CN220786924U (en) | 2023-09-13 | 2023-09-13 | Device for collecting and reinjection of breathing gas of oil product storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322482055.8U CN220786924U (en) | 2023-09-13 | 2023-09-13 | Device for collecting and reinjection of breathing gas of oil product storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220786924U true CN220786924U (en) | 2024-04-16 |
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ID=90634074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322482055.8U Active CN220786924U (en) | 2023-09-13 | 2023-09-13 | Device for collecting and reinjection of breathing gas of oil product storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220786924U (en) |
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2023
- 2023-09-13 CN CN202322482055.8U patent/CN220786924U/en active Active
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