CN206488547U - A kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge - Google Patents
A kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge Download PDFInfo
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- CN206488547U CN206488547U CN201720082879.8U CN201720082879U CN206488547U CN 206488547 U CN206488547 U CN 206488547U CN 201720082879 U CN201720082879 U CN 201720082879U CN 206488547 U CN206488547 U CN 206488547U
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- gas
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- tank
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 84
- 239000007789 gas Substances 0.000 claims abstract description 138
- 239000007788 liquid Substances 0.000 claims abstract description 119
- 239000003949 liquefied natural gas Substances 0.000 claims abstract description 47
- 239000003507 refrigerant Substances 0.000 claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000004064 recycling Methods 0.000 claims abstract description 15
- 239000003345 natural gas Substances 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses the VOCs gas devices that a kind of utilization LNG cold energy reclaims oil tank discharge, VOCs gases can not only be reclaimed by aiming to provide one kind, and the VOCs gas devices of oil tank discharge can be reclaimed without using the utilization LNG cold energy of electric energy by the use of LNG cold energy as the energy.It includes liquefied natural gas loop, VOCs gas return paths and recycling can.Liquefied natural gas loop includes LNG tank, cryogenic refrigerator, regenerator and natural gas output channel.Cryogenic refrigerator includes refrigerant tank and the heat exchange gas pipeline and the first VOCs gas converting heat pipelines that are arranged in refrigerant tank.Regenerator includes backheat tank and the secondary heat exchange gas pipeline being arranged in backheat tank, the 2nd VOCs gas converting heats pipeline and discharge heat exchange pipeline.VOCs gas return paths include gas-liquid separator, cooler, secondary gas-liquid separator, No. three gas-liquid separators and No. four gas-liquid separators.
Description
Technical field
The utility model is related to a kind of VOCs retracting devices, and in particular to a kind of utilization LNG cold energy reclaims oil tank discharge
VOCs gas devices.
Background technology
Energy and environment are that the theme of world today's development is also the problem of China's development must be faced.With environmental consciousness
Enhancing and sustainable development requirement, VOCs gases（Volatile organic matter gas）Recovery, control will be by more next
More attention.The volatilization of VOCs gases is present in petrochemical industry and is very easy to occur, and not only causes resources loss, more structure
Into potential fire hazard, while hazardous VOCs gas severe contamination environment, harm worker's is healthy.
Few in the market to be directed to the devices that VOCs gases are reclaimed, most of is all that purifying VOCs gas is allowed to not dirty
Environment is contaminated, but most of VOCs gases therein are cleaned rear directly discharge, cause the waste of the energy.And the few portion of in the market
The recycling and processing device divided for VOCs gases uses electricity for the energy, and not only power consumption is very big, and device is extremely complex and imitates
Rate is very low, it is difficult to meet the real demand of petroleum chemical enterprise's storage and production.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art to be reclaimed there is provided one kind
VOCs gases, and oil tank discharge can be reclaimed without using the utilization LNG cold energy of electric energy by the use of LNG cold energy as the energy
VOCs gas devices.
The technical solution of the utility model is：
A kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge, including liquefied natural gas loop, VOCs gases
Loop and recycling can, liquefied natural gas loop include LNG tank, cryogenic refrigerator, regenerator and natural gas efferent duct
Road, the cryogenic refrigerator includes refrigerant tank and a heat exchange gas pipeline being arranged in refrigerant tank and the first VOCs gases
Heat exchange pipeline, the regenerator includes backheat tank and the secondary heat exchange gas pipeline, the 2nd VOCs gas that are arranged in backheat tank
Body heat exchange pipeline and discharge heat exchange pipeline, the outlet of the LNG tank passes through pipeline and once right gas heat exchange pipeline
Conduit entrance is connected, and once the pipe outlet of right gas heat exchange pipeline is connected with the conduit entrance of secondary heat exchange gas pipeline
Connect, the pipe outlet of secondary heat exchange gas pipeline is connected with the conduit entrance of natural gas output channel；VOCs gas return paths
It is described including gas-liquid separator, cooler, secondary gas-liquid separator, No. three gas-liquid separators and No. four gas-liquid separators
Gas-liquid separator, secondary gas-liquid separator, No. three gas-liquid separators and No. four gas-liquid separators include separator body
And import, gas vent and liquid discharge outlet in separator body are arranged on, the cooler is provided with Heating medium, heating agent
Outlet, refrigerant import and refrigerant exit, gas-liquid separator, secondary gas-liquid separator, No. three gas-liquid separators and four gas
The liquid discharge outlet of liquid/gas separator is connected by pipeline with recycling can, and the gas vent of a gas-liquid separator passes through pipeline
It is connected with Heating medium, heating agent outlet is connected with the import of secondary gas-liquid separator, and the gas of secondary gas-liquid separator goes out
Mouth is connected by pipeline with the conduit entrance of the 2nd VOCs gas converting heat pipelines, and the pipeline of the 2nd VOCs gas converting heat pipelines goes out
Mouth is connected by pipeline with the import of No. three gas-liquid separators, and the gas vent of No. three gas-liquid separators passes through pipeline and first
The conduit entrance of VOCs gas converting heat pipelines is connected, and the pipe outlet of the first VOCs gas converting heat pipelines passes through pipeline and four times
The import of gas-liquid separator is connected, and the gas vent of No. four gas-liquid separators is entered by pipeline with discharging the pipeline of heat exchange pipeline
Mouth is connected, and the pipe outlet of discharge heat exchange pipeline is connected by pipeline with refrigerant import.
The VOCs gas devices that the utilization LNG cold energy of this programme reclaims oil tank discharge can not only reclaim VOCs gases,
VOCs gases are converted into liquid；And can be by the use of LNG cold energy as the energy, without using electric energy, and gas-liquid separation effect
Good, condensation efficiency is high.
Preferably, also including oil storage tank, the top of oil storage tank is provided with VOCs gas discharge outlets, the VOCs gases discharge
Mouth is connected by pipeline with the import of a gas-liquid separator.
Preferably, reclaiming pot bottom is provided with discharge opeing interface, be additionally provided with return at the top of oil storage tank, discharge opeing interface with
It is connected between return by condensate conduit, condensate conduit is provided with pump.This programme can weigh the VOCs of liquid
Newly return in oil tank, it is to avoid the waste of the energy.
Preferably, gas-liquid separator, secondary gas-liquid separator, No. three gas-liquid separators and No. four gas-liquid separators
Liquid discharge outlet position height be above height at the top of recycling can.Gas-liquid separator of this programme, secondary gas-liquid point
The liquid VOCs gone out from device, No. three gas-liquid separators with four gas-liquid separator separates can be flowed directly into by liquid discharge outlet
Into recycling can.
Preferably, the outlet of connection LNG tank with the once pipeline of the conduit entrance of right gas heat exchange pipeline
Provided with first throttle valve.
Preferably, the pipe of the import of the pipe outlet and No. three gas-liquid separators of the 2nd VOCs gas converting heat pipelines of connection
Road is provided with second throttle.
The beneficial effects of the utility model are：VOCs gases can not only be reclaimed, VOCs gases liquid are converted into, again
Return in oil tank, it is to avoid the waste of the energy；And can be by the use of LNG cold energy as the energy, without using electric energy.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the VOCs gas devices that utilization LNG cold energy of the present utility model reclaims oil tank discharge
Figure.
Fig. 2 is a kind of structural representation of regenerator of the present utility model.
Fig. 3 is a kind of structural representation of cryogenic refrigerator of the present utility model.
In figure：
Gas-liquid separator 1；
Cooler 2, Heating medium 2.1, heating agent outlet 2.2, refrigerant import 2.3, refrigerant exit 2.4；
Secondary gas-liquid separator 3；
Regenerator 4, backheat tank 4.1, secondary heat exchange gas pipeline 4.2, the 2nd VOCs gas converting heats pipeline 4.3, discharge
Heat exchange pipeline 4.4；
Natural gas output channel 5；No. three gas-liquid separators 6；
Cryogenic refrigerator 7, refrigerant tank 7.1, a heat exchange gas pipeline 7.2, the first VOCs gas converting heats pipeline 7.3；
LNG tank 8；No. four gas-liquid separators 9；Recycling can 10；Condensate conduit 11；Pump 12.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge, including liquefied natural gas is returned
Road, VOCs gas return paths, recycling can 10 and oil storage tank.The top of oil storage tank is provided with VOCs gas discharge outlets and return.Return
Closed cans bottom is provided with discharge opeing interface.It is connected between discharge opeing interface and return by condensate conduit 11, condensate conduit
It is provided with pump 12.
Liquefied natural gas loop includes LNG tank 8, cryogenic refrigerator 7, regenerator 4 and natural gas output channel
5。
As shown in Figure 1 and Figure 2, regenerator includes backheat tank 4.1 and the secondary heat exchange gas pipeline being arranged in backheat tank
4.2nd, the 2nd VOCs gas converting heats pipeline 4.3 and discharge heat exchange pipeline 4.4.Secondary heat exchange gas pipeline, the 2nd VOCs gases
Heat exchange pipeline is three sets of separate pipe-line systems with discharge heat exchange pipeline.Secondary heat exchange gas pipeline, the 2nd VOCs gases
Heat exchange pipeline is tortuous pipeline with discharge heat exchange pipeline.Secondary heat exchange gas pipeline, the 2nd VOCs gas converting heat pipelines
It is sequentially distributed from bottom to top with discharge heat exchange pipeline.
As shown in Figure 1, Figure 3, cryogenic refrigerator includes refrigerant tank 7.1 and a heat exchange gas being arranged in refrigerant tank
The VOCs gas converting heats pipeline 7.3 of pipeline 7.2 and the first.Heat exchange gas pipeline and the first VOCs gas converting heats pipeline are two
The separate pipe-line system of set.Heat exchange gas pipeline and the first VOCs gas converting heat pipelines are tortuous pipeline.
Heat exchange gas pipeline is located at the lower section of the first VOCs gas converting heat pipelines.
The outlet of LNG tank is connected by pipeline with the conduit entrance of once right gas heat exchange pipeline, and connection
The pipeline of outlet with the once conduit entrance of right gas heat exchange pipeline of LNG tank is provided with first throttle valve.It is once right
The pipe outlet of gas heat exchange pipeline is connected with the conduit entrance of secondary heat exchange gas pipeline.Secondary heat exchange gas pipeline
Pipe outlet is connected with the conduit entrance of natural gas output channel.
VOCs gas return paths include gas-liquid separator 1, cooler 2, secondary gas-liquid separator 3, three gas-liquid separations
Device 6 and No. four gas-liquid separators 9.Gas-liquid separator is prior art.Gas-liquid separator, secondary gas-liquid separator, three times
Gas-liquid separator and No. four gas-liquid separators include separator body and the import being arranged in separator body, gas vent
With liquid discharge outlet.Cooler is provided with Heating medium 2.1, heating agent outlet 2.2, refrigerant import 2.3 and refrigerant exit 2.4.It is cold
But the interior intracavitary of device is provided with heating agent flow pipe, and Heating medium is connected with the import of heating agent flow pipe, heating agent flow pipe
The outlet of outlet and heating agent be connected.The intracavity inter-connection of refrigerant import and refrigerant exit with cooler.
Gas-liquid separator, secondary gas-liquid separator, the liquid of No. three gas-liquid separators and No. four gas-liquid separators are arranged
Put the height that mouthful position height is above at the top of recycling can.Gas-liquid separator, secondary gas-liquid separator, three gas-liquid separations
Device is connected with the liquid discharge outlet of No. four gas-liquid separators by pipeline with recycling can.
VOCs gas discharge outlets are connected by pipeline with the import of a gas-liquid separator.The gas of gas-liquid separator
Body outlet is connected by pipeline with Heating medium.Heating agent outlet is connected with the import of secondary gas-liquid separator.
The gas vent of secondary gas-liquid separator is connected by pipeline with the conduit entrance of the 2nd VOCs gas converting heat pipelines
Connect, and the pipeline of the import of the pipe outlet and No. three gas-liquid separators of the 2nd VOCs gas converting heat pipelines of connection is provided with the 3rd
Choke valve.The pipe outlet of 2nd VOCs gas converting heat pipelines is connected by pipeline with the import of No. three gas-liquid separators, and
The pipeline of import of the pipe outlet and No. three gas-liquid separators of the 2nd VOCs gas converting heat pipelines is connected provided with the second throttling
Valve.
The gas vent of No. three gas-liquid separators is connected by pipeline with the conduit entrance of the first VOCs gas converting heat pipelines
Connect.The pipe outlet of first VOCs gas converting heat pipelines is connected by pipeline with the import of No. four gas-liquid separators.
Conduit entrance of the gas vent of No. four gas-liquid separators by pipeline with discharging heat exchange pipeline is connected.Discharge is changed
The pipe outlet of hot channel is connected by pipeline with refrigerant import.Refrigerant exit passes through gas emission pipe and outside air phase
Connection.
The utilization LNG of the present embodiment（Liquefied natural gas）Cold energy reclaims the specifically used of the VOCs gas devices of oil tank discharge
It is as follows：
The course of work in liquefied natural gas loop is as follows：The liquefied natural gas of LNG tank discharge is in cryogenic refrigeration
It is changed into gaseous state after being conducted heat in heat exchange gas pipeline of device and the secondary heat exchange gas pipeline of regenerator, then passes through
Natural gas output channel is exported；LNG cold energy is utilized in this process（I.e. liquefied natural gas is changed into the substantial amounts of heat of gaseous state absorption
Energy）Refrigerant tank is set to be maintained at low temperature level with the environment temperature in backheat tank（The environment temperature of refrigerant tank is less than -100 DEG C, backheat
Environment temperature in tank is less than 0 DEG C）.
The VOCs gases produced in oil storage tank pass sequentially through following steps and recycled：
First, VOCs gas enter a gas-liquid separator, carry out gas-liquid separation, the gas that a gas-liquid separator separates go out
Body enters cooler；
Second, cooler is condensed to the gas of entrance；Then, gas-liquid separation is carried out by secondary gas-liquid separator；
3rd, the gas that secondary gas-liquid separator separates go out enters in the 2nd VOCs gas converting heat pipelines of regenerator, profit
Condensed with LNG cold energy；Then, gas-liquid separation is carried out by No. three gas-liquid separators；
4th, the gas that three gas-liquid separator separates go out enters in the first VOCs gas converting heat pipelines of refrigerant tank, profit
Condensed with LNG cold energy；Then, gas-liquid separation is carried out by No. four gas-liquid separators；
5th, the gas that four gas-liquid separator separates go out enters to be exchanged heat in the discharge heat exchange pipeline of regenerator；So
Afterwards, the inner chamber of cooler is entered by refrigerant import（It is used as refrigerant）Cooler is cooled and arranged by refrigerant exit and gas
Discharge of pipes is put into air.
In above-mentioned first to the 5th step：All gas-liquid separators（First to the 5th gas-liquid separator）The liquid isolated
Body enters recycling can, then by condensate conduit and being pumped back in oil storage tank, it is to avoid the waste of the energy；And produced in oil storage tank
99% volatile organic matter is efficiently recovered into recycling can in raw VOCs gases, remaining to be changed into air row
Enter in air.
Claims (6)
1. a kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge, it is characterized in that, including liquefied natural gas loop,
VOCs gas return paths and recycling can, liquefied natural gas loop include LNG tank, cryogenic refrigerator, regenerator and natural
Gas output channel, the cryogenic refrigerator includes refrigerant tank and a heat exchange gas pipeline being arranged in refrigerant tank and first
VOCs gas converting heat pipelines, the regenerator includes backheat tank and the secondary heat exchange gas pipeline being arranged in backheat tank, the
Two VOCs gas converting heats pipelines and discharge heat exchange pipeline,
The outlet of the LNG tank is connected by pipeline with the conduit entrance of once right gas heat exchange pipeline, once so
The pipe outlet of gas heat exchange pipeline is connected with the conduit entrance of secondary heat exchange gas pipeline, secondary heat exchange gas pipeline
Pipe outlet is connected with the conduit entrance of natural gas output channel；
VOCs gas return paths include gas-liquid separator, cooler, secondary gas-liquid separator, No. three gas-liquid separators and four times
Gas-liquid separator, a gas-liquid separator, secondary gas-liquid separator, No. three gas-liquid separators and No. four gas-liquid separators are equal
Including separator body and the import being arranged in separator body, gas vent and liquid discharge outlet, set on the cooler
There are Heating medium, heating agent outlet, refrigerant import and refrigerant exit,
Gas-liquid separator, secondary gas-liquid separator, the liquid discharge outlet of No. three gas-liquid separators and No. four gas-liquid separators
It is connected by pipeline with recycling can,
The gas vent of gas-liquid separator is connected by pipeline with Heating medium, heating agent outlet and secondary gas-liquid separator
Import be connected,
The gas vent of secondary gas-liquid separator is connected by pipeline with the conduit entrance of the 2nd VOCs gas converting heat pipelines, the
The pipe outlet of two VOCs gas converting heat pipelines is connected by pipeline with the import of No. three gas-liquid separators,
The gas vent of No. three gas-liquid separators is connected by pipeline with the conduit entrance of the first VOCs gas converting heat pipelines, the
The pipe outlet of one VOCs gas converting heat pipelines is connected by pipeline with the import of No. four gas-liquid separators,
Conduit entrance of the gas vent of No. four gas-liquid separators by pipeline with discharging heat exchange pipeline is connected, and discharges heat exchanger tube
The pipe outlet in road is connected by pipeline with refrigerant import.
2. a kind of utilization LNG cold energy according to claim 1 reclaims the VOCs gas devices of oil tank discharge, it is characterized in that,
Also include oil storage tank, the top of oil storage tank is provided with VOCs gas discharge outlets, and the VOCs gas discharge outlets are by pipeline and once
The import of gas-liquid separator is connected.
3. a kind of utilization LNG cold energy according to claim 2 reclaims the VOCs gas devices of oil tank discharge, it is characterized in that,
The recovery pot bottom, which is provided with the top of discharge opeing interface, oil storage tank, is additionally provided with return, between discharge opeing interface and return
It is connected by condensate conduit, condensate conduit is provided with pump.
4. a kind of utilization LNG cold energy according to claim 1 or 2 or 3 reclaims the VOCs gas devices of oil tank discharge, it is special
Levying is, a gas-liquid separator, secondary gas-liquid separator, the liquid of No. three gas-liquid separators and No. four gas-liquid separators are arranged
Put the height that mouthful position height is above at the top of recycling can.
5. a kind of utilization LNG cold energy according to claim 1 or 2 or 3 reclaims the VOCs gas devices of oil tank discharge, it is special
Levying is, the pipeline of outlet with the once conduit entrance of right gas heat exchange pipeline of connection LNG tank is provided with first throttle
Valve.
6. a kind of utilization LNG cold energy according to claim 1 or 2 or 3 reclaims the VOCs gas devices of oil tank discharge, it is special
Levying is, the pipeline for connecting the import of the pipe outlet and No. three gas-liquid separators of the 2nd VOCs gas converting heat pipelines is provided with second
Choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720082879.8U CN206488547U (en) | 2017-01-19 | 2017-01-19 | A kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720082879.8U CN206488547U (en) | 2017-01-19 | 2017-01-19 | A kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge |
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| Publication Number | Publication Date |
|---|---|
| CN206488547U true CN206488547U (en) | 2017-09-12 |
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ID=59767480
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| CN201720082879.8U Expired - Fee Related CN206488547U (en) | 2017-01-19 | 2017-01-19 | A kind of utilization LNG cold energy reclaims the VOCs gas devices of oil tank discharge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826833A (en) * | 2018-05-09 | 2018-11-16 | 常州大学 | A kind of natural gas impurity separating and reclaiming device |
| CN110440135A (en) * | 2019-08-13 | 2019-11-12 | 青岛科技大学 | A kind of VOCs recovery system based on LNG cold energy |
| CN114100304A (en) * | 2021-11-26 | 2022-03-01 | 青岛双瑞海洋环境工程股份有限公司 | VOC (volatile organic compounds) treatment system of crude oil transport ship and LNG (liquefied natural gas) power ship |
-
2017
- 2017-01-19 CN CN201720082879.8U patent/CN206488547U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826833A (en) * | 2018-05-09 | 2018-11-16 | 常州大学 | A kind of natural gas impurity separating and reclaiming device |
| CN108826833B (en) * | 2018-05-09 | 2020-05-26 | 常州大学 | Natural gas impurity separation and recovery device |
| CN110440135A (en) * | 2019-08-13 | 2019-11-12 | 青岛科技大学 | A kind of VOCs recovery system based on LNG cold energy |
| CN114100304A (en) * | 2021-11-26 | 2022-03-01 | 青岛双瑞海洋环境工程股份有限公司 | VOC (volatile organic compounds) treatment system of crude oil transport ship and LNG (liquefied natural gas) power ship |
| CN114100304B (en) * | 2021-11-26 | 2024-06-04 | 青岛双瑞海洋环境工程股份有限公司 | Crude oil transport ship VOC processing system and LNG power ship |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |