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CN103398286A - Device and method for increasing super-cooling degree of liquid carbon dioxide storage tank - Google Patents

Device and method for increasing super-cooling degree of liquid carbon dioxide storage tank Download PDF

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Publication number
CN103398286A
CN103398286A CN2013103029651A CN201310302965A CN103398286A CN 103398286 A CN103398286 A CN 103398286A CN 2013103029651 A CN2013103029651 A CN 2013103029651A CN 201310302965 A CN201310302965 A CN 201310302965A CN 103398286 A CN103398286 A CN 103398286A
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China
Prior art keywords
tank
carbon dioxide
pressure
liquid carbon
gas cylinder
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Granted
Application number
CN2013103029651A
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Chinese (zh)
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CN103398286B (en
Inventor
万金川
王伟光
陈晖�
付瑜
王海山
安莎
张兵
叶建平
张守仁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China United Coalbed Methane Corp Ltd
Xian Aerospace Propulsion Institute
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China United Coalbed Methane Corp Ltd
Xian Aerospace Propulsion Institute
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Application filed by China United Coalbed Methane Corp Ltd, Xian Aerospace Propulsion Institute filed Critical China United Coalbed Methane Corp Ltd
Priority to CN201310302965.1A priority Critical patent/CN103398286B/en
Publication of CN103398286A publication Critical patent/CN103398286A/en
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Publication of CN103398286B publication Critical patent/CN103398286B/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/70Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells

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  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a device and method for increasing the super-cooling degree of a liquid carbon dioxide storage tank. The device comprises a storage tank, as well as a drain valve, a pressure gauge, a thermometer, an air inlet valve, an exhaust pipe, an air inlet pipe and a high-pressure cylinder which are arranged on the storage tank, wherein an outlet end of the drain valve is connected with the exhaust pipe, and an inlet end of the air inlet valve is connected with the high-pressure cylinder through the air inlet pipe. The device overcomes the defects in the prior art, does not need extra mechanical devices, is low in energy consumption and can obtain higher super-cooling degree only by virtue of the high-pressure cylinder after a storage tank system is simply reformed.

Description

A kind of device and method that improves liquid carbon dioxide tank Subcoold temperature
Technical field
The present invention relates to a kind of method that improves liquid carbon dioxide tank Subcoold temperature, particularly the method for supercharging raising Subcoold temperature after first step-down cooling.
Background technique
Namely realize energy-saving and emission-reduction by to dark coal seam filling liquid carbon dioxide replacement methane, improving the methane output technology, improved again methane output; For prevent liquid carbon dioxide by injection pump supercharging time vaporization causes that gas is stifled, gas lock, reduction pump efficiency, to improve on the one hand the efficiency of injection pump, to improve on the other hand the Subcoold temperature of carbon dioxide tank.The existing method that improves the Subcoold temperature of carbon dioxide tank mainly contains two kinds, and the first is to adopt refrigerator to reduce the liquid carbon dioxide temperature; The second is to adopt the centrifugal pump engine driven supercharging in the tank outlet.These two kinds of methods are all to realize Subcoold temperature by supercharging, have non-uniform temperature, and the local defect that can form dry ice; And these two kinds of methods all need extra procuring equipment, have increased operating cost and energy consumption is higher, and the Subcoold temperature that obtains is less.
Summary of the invention
The problem that the technology of the present invention solves is: overcome the deficiencies in the prior art part, do not need additionally to purchase machinery, energy consumption is low, to only needing a gas cylinder can obtain larger Subcoold temperature after the simple transformation of tank system.
Technical solution of the present invention is:
A kind of device that improves liquid carbon dioxide tank Subcoold temperature, its special way is: comprise tank, be arranged on escape cock, pressure gauge, thermometer, suction valve, exhaust tube, suction tude, gas cylinder on tank, the outlet end of described escape cock is connected with exhaust tube, and the entry end of described suction valve is connected with gas cylinder by suction tude.
Above-mentioned gas cylinder is high-pressure nitrogen bottle.
Improve the method for liquid carbon dioxide tank Subcoold temperature, its special way is: comprise the following steps:
1] open escape cock 2, the carbon dioxide in tank 1 is exitted by escape cock, vaporize to reduce the pressure and temperature of tank by the carbon dioxide that discharges;
2] with standing a period of time of tank, until the pressure and temperature of tank no longer descends;
3] gas cylinder is connected with the suction valve on tank, opens suction valve, to tank, pour a certain amount of pressurized gas, by suction valve, control pumping rate and final pressure, improve the pressure of tank to setting value.
Step 1] in exit the slow step-down of tank by bleed valve, pressure decay rate is 0.008-0.025MPa per minute.
Step 3] in pumping rate be 0.01-0.03MPa per minute, the safety pressure maximum value that tank supercharging final pressure must not allow greater than tank.
Above-mentioned gas cylinder is high-pressure nitrogen bottle.
The present invention's beneficial effect compared with prior art is:
1,, owing to first tank being discharged a small amount of carbon dioxide vaporization heat absorption, make carbon dioxide tank temperature reduce by 1~3 ℃.
2,, by to the supercharging of carbon dioxide tank, make the liquid carbon dioxide of carbon dioxide tank obtain larger Subcoold temperature under corresponding pressure, in the scope that the tank pressure security allows, can obtain the Subcoold temperature of 3~10 ℃.
Description of drawings
Fig. 1 is that a kind of method that improves the carbon dioxide Subcoold temperature of the present invention totally forms schematic diagram.
Embodiment
As shown in Figure 1, the present invention is comprised of exhaust tube 1, escape cock 2, tank 3, pressure gauge 4, thermometer 5, suction valve 6, suction tude 7, gas cylinder 8.The outlet end of escape cock is connected with exhaust tube, and the entry end of suction valve is connected with gas cylinder by suction tude.
Method based on the raising carbon dioxide Subcoold temperature of Fig. 1 system:
1] open escape cock 2, the carbon dioxide in tank 1 is exitted by bleed valve, vaporize to reduce the pressure and temperature of tank by the carbon dioxide that discharges; Pressure decay rate is 0.008-0.025MPa per minute.
2] standing a period of time of tank, until the tank pressure and temperature is stable.
3] gas cylinder is connected with the upper suction valve of tank, opens suction valve, to tank, pour a certain amount of pressurized gas, by suction valve, control pumping rate and final pressure, improve the pressure of tank to setting value.Pumping rate is 0.01-0.03MPa per minute, and tank supercharging final pressure must not be greater than the safety pressure maximum value of tank permission.
The principle of the invention:
At first discharge a certain amount of carbon dioxide in tank, utilize the carbon dioxide vaporization to take away heat, reduce carbon dioxide tank pressure and realize simultaneously liquid carbon dioxide fast cooling in tank; With external air source, tank is carried out supercharging again, make the carbon dioxide in tank that the Subcoold temperature of 3~10 ℃ be arranged under corresponding pressure, while making liquid carbon dioxide inject operation in down-hole, evaporating capacity is few, improves injection pump efficiency.If it is improper that venting speed is selected, local temperature is too low, dry ice occurs.In addition, pumping rate is also wanted careful selection, affects the Security of whole system.
Embodiment:
(1) liquid carbon dioxide of 10t is arranged in tank, pressure is the corresponding boiling temperature-19.51 ℃ of 2MPa(tank liquid carbon dioxide this moment), temperature-20.5 ℃, slowly open escape cock 2,, by exhaust tube 1 venting, observe the tank internal pressure by pressure gauge 4 and change, 10 minutes step-down 0.18MPa, this moment tank pressure 1.82MPa, this moment, tank liquid carbon dioxide temperature was-22.5 ℃.
(2), with standing a period of time of tank, treat that in tank, pressure carbon dioxide tends towards stability, observe temperature and no longer descend, can carry out the supercharging work of the 3rd step.Discharge altogether approximately 140Kg carbon dioxide in first two steps;
(3) gas cylinder 8 is connected with tank 3 by suction tude 7 and suction valve 6, open suction valve 6, slowly pass into high pressure nitrogen to tank, supercharging in 10 minutes is until pressure gauge 4 shows that tank pressure is 2.2MPa, this moment, tank was temperature-resistant, for-22.5 ℃, and under liquid carbon dioxide 2.2MPa pressure, corresponding boiling temperature is-16.37 ℃, and in tank, the Subcoold temperature of liquid carbon dioxide is 6.13 ℃.

Claims (6)

1. device that improves liquid carbon dioxide tank Subcoold temperature, it is characterized in that: comprise tank, be arranged on escape cock, pressure gauge, thermometer, suction valve, exhaust tube, suction tude, gas cylinder on tank, the outlet end of described escape cock is connected with exhaust tube, and the entry end of described suction valve is connected with gas cylinder by suction tude.
2. the device of raising liquid carbon dioxide tank Subcoold temperature according to claim 1, it is characterized in that: described gas cylinder is high-pressure nitrogen bottle.
3., based on the method for the raising liquid carbon dioxide tank Subcoold temperature of claim 1 or 2 described device, it is characterized in that: comprise the following steps:
1] open escape cock, the carbon dioxide in tank is exitted by escape cock, vaporize to reduce the pressure and temperature of tank by the carbon dioxide that discharges;
2] with standing a period of time of tank, until the pressure and temperature of tank no longer descends;
3] gas cylinder is connected with the suction valve on tank, opens suction valve, to tank, pour a certain amount of pressurized gas, by suction valve, control pumping rate and final pressure, improve the pressure of tank to setting value.
4. the method for raising liquid carbon dioxide tank Subcoold temperature according to claim 3, is characterized in that: step 1] in exit the slow step-down of tank by bleed valve, pressure decay rate is 0.008-0.025MPa per minute.
5. the method for raising liquid carbon dioxide tank Subcoold temperature according to claim 3, is characterized in that: step 3] in pumping rate be 0.01-0.03MPa per minute, the safety pressure maximum value that tank supercharging final pressure must not allow greater than tank.
6. the method for raising liquid carbon dioxide tank Subcoold temperature according to claim 3, it is characterized in that: described gas cylinder is high-pressure nitrogen bottle.
CN201310302965.1A 2013-07-15 2013-07-15 A kind of device and method improving liquid CO 2 tank degree of supercooling Expired - Fee Related CN103398286B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727387A (en) * 2014-01-03 2014-04-16 国核电力规划设计研究院 Heating method for carbon dioxide gasification device
CN104208835A (en) * 2014-09-22 2014-12-17 中煤科工集团重庆研究院有限公司 Liquid carbon dioxide fire extinguishing device for emergency aid in disaster area
CN104266421A (en) * 2014-09-26 2015-01-07 烟台冰轮股份有限公司 Working medium discharge device and discharge control method used for CO2 refrigeration system
CN108361554A (en) * 2018-04-02 2018-08-03 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of nitrogen supercharging device and its application method
CN108374655A (en) * 2018-04-02 2018-08-07 中国石油集团川庆钻探工程有限公司工程技术研究院 Liquid carbon dioxide dry method sand fracturing system and technological process
CN108884968A (en) * 2016-03-28 2018-11-23 长濑产业株式会社 Liquid CO 2 feedway and painting device
CN116006146A (en) * 2021-10-21 2023-04-25 中国石油天然气集团有限公司 Carbon dioxide gasification pressurizing liquid supply system and liquid supply method

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DE2012843B2 (en) * 1970-03-18 1975-02-13 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V., 3400 Goettingen Device for the continuous maintenance of adjustable low temperatures by evaporation of low-boiling liquids
CN2262157Y (en) * 1996-04-30 1997-09-10 成都皮克电力电子技术研究所 Low temperature liquid state gas storing and releasing device
CN101189469A (en) * 2005-06-03 2008-05-28 西港能源有限公司 Storage tank for a cryogenic liquid and method of re-filling same
CN102011939A (en) * 2010-10-28 2011-04-13 华南理工大学 System and method for temperature reduction and pressure stabilization of liquefied natural gas storage tank
CN201827646U (en) * 2010-05-10 2011-05-11 浙江爽凯汽车空调有限公司 Aeration pressure-maintaining machine for two devices of automotive air conditioner
CN102348866A (en) * 2009-03-13 2012-02-08 英国备选能源国际有限公司 Fluid injection
CN103089290A (en) * 2013-01-06 2013-05-08 梁福明 Self-pressurizing type fire fighting device of liquid carbon dioxide low-temperature storage tank

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2012843B2 (en) * 1970-03-18 1975-02-13 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V., 3400 Goettingen Device for the continuous maintenance of adjustable low temperatures by evaporation of low-boiling liquids
CN2262157Y (en) * 1996-04-30 1997-09-10 成都皮克电力电子技术研究所 Low temperature liquid state gas storing and releasing device
CN101189469A (en) * 2005-06-03 2008-05-28 西港能源有限公司 Storage tank for a cryogenic liquid and method of re-filling same
CN102348866A (en) * 2009-03-13 2012-02-08 英国备选能源国际有限公司 Fluid injection
CN201827646U (en) * 2010-05-10 2011-05-11 浙江爽凯汽车空调有限公司 Aeration pressure-maintaining machine for two devices of automotive air conditioner
CN102011939A (en) * 2010-10-28 2011-04-13 华南理工大学 System and method for temperature reduction and pressure stabilization of liquefied natural gas storage tank
CN103089290A (en) * 2013-01-06 2013-05-08 梁福明 Self-pressurizing type fire fighting device of liquid carbon dioxide low-temperature storage tank

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727387A (en) * 2014-01-03 2014-04-16 国核电力规划设计研究院 Heating method for carbon dioxide gasification device
CN103727387B (en) * 2014-01-03 2016-04-06 国核电力规划设计研究院 A kind of temperature-rising method of carbon dioxide gasification device
CN104208835A (en) * 2014-09-22 2014-12-17 中煤科工集团重庆研究院有限公司 Liquid carbon dioxide fire extinguishing device for emergency aid in disaster area
CN104266421A (en) * 2014-09-26 2015-01-07 烟台冰轮股份有限公司 Working medium discharge device and discharge control method used for CO2 refrigeration system
CN108884968A (en) * 2016-03-28 2018-11-23 长濑产业株式会社 Liquid CO 2 feedway and painting device
CN108884968B (en) * 2016-03-28 2021-08-03 长濑产业株式会社 Liquid carbon dioxide supply device and coating device
CN108361554A (en) * 2018-04-02 2018-08-03 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of nitrogen supercharging device and its application method
CN108374655A (en) * 2018-04-02 2018-08-07 中国石油集团川庆钻探工程有限公司工程技术研究院 Liquid carbon dioxide dry method sand fracturing system and technological process
CN108374655B (en) * 2018-04-02 2023-11-17 中国石油天然气集团有限公司 Liquid carbon dioxide dry sand fracturing system and technological process
CN108361554B (en) * 2018-04-02 2024-06-11 中国石油天然气集团有限公司 Nitrogen supercharging device and application method thereof
CN116006146A (en) * 2021-10-21 2023-04-25 中国石油天然气集团有限公司 Carbon dioxide gasification pressurizing liquid supply system and liquid supply method

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Granted publication date: 20160810