CN207552272U - A kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas - Google Patents
A kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas Download PDFInfo
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- CN207552272U CN207552272U CN201721576308.6U CN201721576308U CN207552272U CN 207552272 U CN207552272 U CN 207552272U CN 201721576308 U CN201721576308 U CN 201721576308U CN 207552272 U CN207552272 U CN 207552272U
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- heat exchanger
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- compressor
- control valve
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Abstract
The utility model provides a kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas, it is characterised in that：Air accumulator surge tank front end is provided with tank car tail gas input piping, air accumulator surge tank rear end is connected to heat exchanger, heat exchanger exchanges heat for indirect type, heat exchanger low-temperature receiver pipeline front end is connect with air accumulator surge tank, rear end is connect with compressor inlet, heat source pipeline front end is connect with compressor outlet, rear end is connect with filter, compressor outlet is divided into two pipelines, one pipeline is connect with heat exchanger heat source import, another pipeline is connect with water recirculator, water recirculator rear end is connected on the pipeline that heat exchanger is connect with filter, junction is located at I rear end of compressor temperature control valve, filter rear end is connect with forecooler, forecooler rear end is connect with denitrification column, denitrification column rear end is connect with liquefier, liquefier rear end and LNG storage tank.The utility model is simple in structure, reasonable design, and effective recycling can be carried out to tank car BOG gases, energy saving.
Description
Technical field
The utility model is related to new energy and field of energy-saving technology, and in particular to a kind of liquefied natural gas (LNG) plant tank car tail gas
Retracting device.
Background technology
Liquefied natural gas（LNG）Be a kind of temperature in atmospheric conditions it is about -162.5 DEG C of mixing liquid, main component
For methane, in addition there is the substance usually contained in a small amount of ethane, propane, N2 or other natural gases.LNG is a kind of Low Temperature Liquid
Body, volume are about the 1/600 of same amount gaseous natural gas volume, and Product transport uses vacuum heat-insulation low pressure storage tank tank car, filling
It unloads BOG gas of the pressure more than 0.1Mpa before vehicle and tank car entrucking and is usually discharged into torch pipe network and directly burn, result in this way
The waste of the resource of natural gas, increases production cost.Therefore, it is badly in need of exploitation new technology, new equipment and new method, to LNG
Conveying trough tail gas is recycled.
Utility model content
The utility model provides a kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas, it is intended to the LNG conveying trough tailstock
Gas is recycled.
In order to realize the purpose of this utility model, intend using following technical scheme：
A kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas, including air accumulator surge tank, heat exchanger, denitrification column, pressure
Contracting machine, filter, LNG storage tank, compressor temperature control valve I and compressor temperature control valve II, it is characterised in that：
The air accumulator surge tank front end is provided with tank car tail gas input piping, and the air accumulator surge tank rear end is connected to
The heat exchanger,
The heat exchanger exchanges heat for indirect type, and the heat exchanger low-temperature receiver pipeline front end is connect with the air accumulator surge tank,
Rear end is connect with the compressor inlet, and heat source pipeline front end is connect with the compressor outlet, and rear end connects with the filter
It connecing, the heat exchanger heat source rear end pipe road is provided with the compressor temperature control valve I,
The compressor outlet is divided into two pipelines, and a pipeline is connect with the heat exchanger heat source import, another pipe
Road is connect with water recirculator, and the water recirculator rear end is connected to the pipe that the heat exchanger is connect with the filter
On the road, junction is located at I rear end of compressor temperature control valve,
The water recirculator rear end pipe road is provided with the compressor temperature control valve II, the compressor temperature
Control valve I is connected with each other with the compressor temperature control valve II, and is connect simultaneously with the heat exchanger low-temperature receiver rear end pipeline,
The filter rear end is connect with forecooler, and the forecooler rear end is connect with the denitrification column, the denitrification column
Rear end is connect with liquefier, the liquefier rear end and the LNG storage tank.
Further, the air accumulator surge tank is also connect with flare system.
Further, it is provided with fluid level control valve in the denitrification column.
The beneficial effects of the utility model are：
1st, the utility model is simple in structure, and reasonable design, investment cost is few, easy to use.
2nd, effective recycling can be carried out to tank car BOG gases using the utility model device, turns waste into wealth, both saved
The energy, and enterprise's production cost is reduced, while reduce the discharge of fuel gas again, alleviate security risk and environment shadow
It rings.
Description of the drawings
Fig. 1 shows the structure diagram of the utility model.
In all the appended drawings, identical reference numeral is used for representing identical element or structure, wherein：
1st, tank car tail gas input piping, 2, gas storage surge tank, 3, compressor, 4, filter, 5, forecooler, 6, denitrification column,
7th, liquefier, 8, LNG storage tank, 9, fluid level control valve, 10, flare system, 11, heat exchanger, 12, water recirculator, 13, compression
Machine temperature control valve.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.
As shown in Figure 1, a kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas, including air accumulator surge tank 2, heat exchanger
11st, denitrification column 6, compressor 3, filter 4, LNG storage tank 8, compressor temperature control valve I 131 and compressor temperature control valve II
132, it is characterised in that：
2 front end of air accumulator surge tank is provided with tank car tail gas input piping 1, and 2 rear end of air accumulator surge tank is connected to heat exchange
Device 11, air accumulator surge tank 2 are also connect with flare system 10,
Heat exchanger 11 exchanges heat for indirect type, and 11 low-temperature receiver pipeline front end of heat exchanger is connect with air accumulator surge tank 2, rear end and pressure
3 import of contracting machine connects, and heat source pipeline front end is connected with the outlet of compressor 3, and rear end is connect with filter 4, after 11 heat source of heat exchanger
End pipe road is provided with compressor temperature control valve I 131,
The outlet of compressor 3 is divided into two pipelines, and a pipeline returns to heat exchanger 11, another pipeline and water recirculator
12 connections, 12 rear end of water recirculator are connected on the pipeline that heat exchanger 11 is connect with filter 4, and junction is located at compressor
I 131 rear end of temperature control valve,
12 rear end pipe of water recirculator road is provided with compressor temperature control valve II 132, compressor temperature control valve I
131 are connected with each other, and connect simultaneously with 11 low-temperature receiver rear end pipeline of heat exchanger with compressor temperature control valve II 132,
4 rear end of filter is connect with forecooler 5, and 5 rear end of forecooler is connect with denitrification column 6, and liquid level is provided in denitrification column 6
Control valve 9,6 rear end of denitrification column are connect with liquefier 7,7 rear end of liquefier and LNG storage tank 8.
The course of work：LNG tank cars tail gas inputs piping 1 by tank car tail gas and is discharged into gas storage surge tank 2, gas storage surge tank
Enter 3 system of compressor, BOG after the gas converting heat that about -70 DEG C of BOG gases export in heat exchanger 11 with compressor 3 in 2
Gas boosting rear portion sends heat exchanger 11 back to for heating BOG gases, and a part is cooled down into water recirculator 12.
Compressor temperature control valve group 13 is adjusted, reaches control 3 inlet temperature of compressor, compression by the way that compressor 3 is controlled to export tolerance
3 inlet temperature general control of machine enters filter 4 at -20~20 DEG C, by compressed BOG gases and is filtered, filtered
BOG gases afterwards enter forecooler 5 and are pre-chilled, and the BOG gases after precooling are about -99 DEG C and enter the progress denitrogenation of denitrification column 6,
Nitrogen in BOG gases is separated in denitrification column 6, is discharged by 6 bottom of denitrification column, and the BOG gases after denitrogenation enter
Liquefier 7, the BOG gases after liquefaction exchanges heat become LNG product and enter LNG storage tank 8, complete the recycling of tank car tail gas.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principles of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas, including air accumulator surge tank（2）, heat exchanger（11）, denitrogenation
Tower（6）, compressor（3）, filter（4）, LNG storage tank（8）, compressor temperature control valve I（131）With compressor temperature control valve
Ⅱ（132）, it is characterised in that：
The air accumulator surge tank（2）Front end is provided with tank car tail gas input piping（1）, the air accumulator surge tank（2）Rear end
It is connected to the heat exchanger（11）,
The heat exchanger（11）It exchanges heat for indirect type, the heat exchanger（11）Low-temperature receiver pipeline front end and the air accumulator surge tank
（2）Connection, rear end and the compressor（3）Import connects, heat source pipeline front end and the compressor（3）Outlet connection, rear end
With the filter（4）Connection, the heat exchanger（11）Heat source rear end pipe road is provided with the compressor temperature control valve I
（131）,
The compressor（3）Outlet is divided into two pipelines, a pipeline and the heat exchanger（11）Heat source import connects, another
Pipeline and water recirculator（12）Connection, the water recirculator（12）Rear end is connected to the heat exchanger（11）With it is described
Filter（4）On the pipeline of connection, junction is located at the compressor temperature control valve I（131）Rear end,
The water recirculator（12）Rear end pipe road is provided with the compressor temperature control valve II（132）, the compression
Machine temperature control valve I（131）With the compressor temperature control valve II（132）Be connected with each other, and simultaneously with the heat exchanger
（11）The pipeline connection of low-temperature receiver rear end,
The filter（4）Rear end and forecooler（5）Connection, the forecooler（5）Rear end and the denitrification column（6）Connection, institute
State denitrification column（6）Rear end and liquefier（7）Connection, the liquefier（7）Rear end and the LNG storage tank（8）.
2. a kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas according to claim 1, it is characterised in that：The storage
Gas tank surge tank（2）With flare system（10）Connection.
3. a kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas according to claim 1, it is characterised in that：It is described de-
Nitrogen tower（6）Inside it is provided with fluid level control valve（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721576308.6U CN207552272U (en) | 2017-11-23 | 2017-11-23 | A kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721576308.6U CN207552272U (en) | 2017-11-23 | 2017-11-23 | A kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207552272U true CN207552272U (en) | 2018-06-29 |
Family
ID=62680690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721576308.6U Expired - Fee Related CN207552272U (en) | 2017-11-23 | 2017-11-23 | A kind of liquefied natural gas (LNG) plant tank car device for recovering tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207552272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373197A (en) * | 2018-12-11 | 2019-02-22 | 马鞍山钢铁股份有限公司 | A kind of pressure release noise reduction recyclable device for cryogenic liquid tank lorry |
-
2017
- 2017-11-23 CN CN201721576308.6U patent/CN207552272U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373197A (en) * | 2018-12-11 | 2019-02-22 | 马鞍山钢铁股份有限公司 | A kind of pressure release noise reduction recyclable device for cryogenic liquid tank lorry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 636600 Zhuma Park No. 1-1, Bazhong Economic Development Zone, Sichuan Province Patentee after: Sichuan Huayou Zhonglan Energy Co., Ltd. Address before: 636475, No. 1 Shimai Road, Xingguang Avenue, Xingguang Industrial Park, Pingchang County, Bazhong City, Sichuan Province Patentee before: Sichuan Tong Kai Energy Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20191123 |