CN101871717A - Complete equipment for CO2 recycling with CO2 vaporization and cool recycling device - Google Patents

Complete equipment for CO2 recycling with CO2 vaporization and cool recycling device Download PDF

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Publication number
CN101871717A
CN101871717A CN201010215022A CN201010215022A CN101871717A CN 101871717 A CN101871717 A CN 101871717A CN 201010215022 A CN201010215022 A CN 201010215022A CN 201010215022 A CN201010215022 A CN 201010215022A CN 101871717 A CN101871717 A CN 101871717A
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heat exchanger
liquid
accumulation
fluid reservoir
reboiler
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CN201010215022A
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CN101871717B (en
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代建钢
李长青
赵新
邱广利
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Nanjing Yitan Science and Technology Co., Ltd.
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代建钢
李长青
赵新
邱广利
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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
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

Abstract

The invention discloses complete equipment for CO2 recycling with a CO2 vaporization and cool recycling device, comprising a CO2 compressor (1), a CO2 drying device (2), a re-boiler (17), a refrigeration compressor (16), a liquefying heat exchanger (4), a liquid storage tank (5) and a carburetor (9). The complete equipment is characterized in that an energy storage tank (10) is installed between the liquid storage tank (5) and the carburetor (9); the pressure of the liquid CO2 in the liquid storage tank (5) is higher than that of the liquid CO2 in the energy storage tank (10); the energy storage tank (10) is connected with the heat exchanger (8); the refrigerating medium in the energy storage tank (10) is circulated between the energy storage tank (10) and the heat exchanger (8) by a circulating pump (11) and a connecting pipeline; the CO2 gas inlet of the heat exchanger (8) is directly communicated with the gas outlet of the re-boiler (17); the gas outlet of the heat exchanger (8) is directly communicated with the liquid CO2 inlet of the liquefying heat exchanger (4); and the liquid CO2 directly flows from the liquefying heat exchanger (4) to the re-boiler (17) and is pumped into the liquid storage tank (5) after impurities are removed. The invention realizes the energy recycle by additionally arranging the energy storage tank and the heat exchanger and remarkably saves the energy.

Description

Have CO 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments
Technical field
The present invention relates to a kind of carbon dioxide recovery use device, thereby especially a kind ofly utilize a large amount of cold energy that produce in the liquefied carbon dioxide gasification refrigeration compressor to be quit work to reach energy-conservation carbon dioxide recovery use device, the very significant CO that has of specifically a kind of energy-saving effect as the energy of the gaseous carbon dioxide liquefaction that makes recovery 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments.
Background technology
Many institutes hit and know, in beer preparation process, need in beer liquid, to add carbon dioxide injection, make and guarantee its mouthfeel, carbon dioxide can directly be bought food-grade liquid carbon dioxide heating back and annotate to beer from market, it is very high to do cost like this, on the other hand, in the beer brewing process, can produce a large amount of carbon dioxide, directly discharging not only causes waste, and pollutes the environment, so the method that existing brewery generally adopts is recycled the carbon dioxide that produces in the brew process.The roughly process of recycling is, at first utilize gas collector that carbon dioxide is sent in the carbon-dioxide gas compressor 1 and be compressed to 1.8-2.0MPa, after dewatering, dry device 2 dryings of carbon dioxide send in the reboiler 17, high-pressure carbon dioxide enters in the liquefaction heat exchanger 4 through reboiler 17, again through with the refrigeration compressor that links to each other of the liquefaction heat exchanger 4 16 liquefy carbon dioxide that freeze, liquid carbon dioxide flows out back into reboiler 17 from liquefaction heat exchanger 4 removes impurity after pump pumps in the fluid reservoir 5 standby, during use, must earlier pressurized liquid carbon dioxide be introduced in the vaporizer, feed high-temperature steam and make its endothermic gasification, after decompression, send in the follow-up gas equipment again, therefore utilize in the process in whole recovery, need to use the co 2 liquefaction of refrigeration compressor on the one hand with gaseous state, this need consume a large amount of energy, use steam to make the liquid carbon dioxide endothermic gasification on the other hand in the use again, need to consume a large amount of steams equally, cause the waste of the energy again, therefore, though existing carbon dioxide has been realized the purpose of environmental protection, need consume a large amount of energy simultaneously.To this, still there is not good solution at present.
Summary of the invention
The objective of the invention is to utilize system energy consumption and the big problem of waste, invent the very significant CO of having of a kind of energy-saving effect at existing carbon dioxide recovery 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments.
Technical scheme of the present invention is:
A kind of CO that has 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments, it comprises CO 2Compressor 1, CO 2Drier 2, reboiler 17, refrigeration compressor 16, liquefaction heat exchanger 4, fluid reservoir 5 and vaporizer 9, CO 2The input of compressor 1 and CO 2Source of the gas links to each other, CO 2The output of compressor 1 and CO 2The input of drier 2 links to each other, CO 2The output of drier 2 links to each other with the input of reboiler 17, and the gas output end of reboiler 17 links to each other by the gas input of pneumatic ball valve 3 with liquefaction heat exchanger 4, enters the CO in the liquefaction heat exchanger 4 2Gas is cooled to liquid CO through refrigeration compressor 16 2, liquid CO 2Pump in the fluid reservoir 5 after removing impurity in the reboiler 17, it is characterized in that:
Between fluid reservoir 5 and vaporizer 9, accumulation of energy groove 10 is installed, the liquid CO in the fluid reservoir 5 2Pressure greater than the liquid CO in the accumulation of energy groove 10 2Pressure;
Accumulation of energy groove 10 is connected with heat exchanger 8, and the refrigerating medium in the accumulation of energy groove 10 circulates the CO of heat exchanger 8 by circulating pump 11 and connecting pipe between accumulation of energy groove 10 and heat exchanger 8 2Gas feed directly is connected with the gas vent of reboiler 17, the gas vent of heat exchanger 8 directly with the liquid CO of liquefaction heat exchanger 4 2Inlet is connected, liquid CO 2Directly flow into the reboiler 17 and pump into fluid reservoir 5 behind the removal impurity from liquefaction heat exchanger 4.
Accumulation of energy groove 10 wherein and heat exchanger 8 have promptly constituted the liquid carbon dioxide of the present invention cold retracting device that gasifies.
On the pipeline that connects between fluid reservoir 5 and the accumulation of energy groove 10, pressure-reducing valve 6 is installed.
On the tube connector that connects between accumulation of energy groove 10 and the vaporizer 9, shutoff valve 15 is installed; Between described fluid reservoir 5 and vaporizer 9, also be connected with the direct-furnish pipe, on described direct-furnish pipe, direct-furnish valve 14 be installed.
Carrying on the cold system output pipe of described accumulation of energy groove 10 is equipped with temperature sensor 12.
Beneficial effect of the present invention:
The present invention has made full use of the characteristic of carbon dioxide, and realization can purpose.This be because, when liquid carbon dioxide pressure descends, its temperature also descends synchronously, if its temperature is elevated to certain value, just can make refrigerating medium drop to certain temperature, utilize carrying carbon dioxide that cold machine cools off gaseous state again, to make its liquefaction be alternative refrigeration compressor, refrigeration compressor is quit work, realize purpose of energy saving, therefore, the present invention's certain amplitude (dropping to 1.0-1.2MPa) that at first high pressure in the fluid reservoir (1.8-2.0MPa) liquid carbon dioxide at first descended utilizes the pressure cold energy that produces that descends to come gaseous carbon dioxide is freezed, and can reduce the working time and the load of refrigeration compressor, realization can, owing to the temperature that enters the liquid carbon dioxide in the vaporizer is higher, therefore, can reduce the steam use amount again simultaneously.
The present invention has realized energy-conservation purpose by increasing accumulation of energy groove and heat exchanger, and the mature technology that all can adopt of accumulation of energy groove and heat exchanger is realized, manufacturing cost is lower, the input-output ratio height.With the 500kg/h gas production is example, and 45kW per hour can economize on electricity.
The present invention can realize a tractor serves several purposes, by reasonable disposition valve and control system, both can make whole system be in the power save mode operation, also can be in work under the state identical with existing systems.
Description of drawings
Fig. 1 is that system of the present invention forms structural representation.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1.
A kind of CO that has 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments, it comprises and the identical CO of prior art 2Compressor 1, CO 2Drier 2, reboiler 17, refrigeration compressor 16, liquefaction heat exchanger 4, fluid reservoir 5 and vaporizer 9, CO 2The input of compressor 1 and CO 2Source of the gas links to each other, CO 2The output of compressor 1 and CO 2The input of drier 2 links to each other, CO 2The output of drier 2 links to each other with the input of reboiler 17, and the gas output end of reboiler 17 links to each other by the gas input of pneumatic ball valve 3 with liquefaction heat exchanger 4, enters the CO in the liquefaction heat exchanger 4 2Gas is cooled to liquid CO through refrigeration compressor 16 2, liquid CO 2Pump in the fluid reservoir 5 after removing impurity in the reboiler 17, reclaim in order to realize energy, the characteristic that temperature descends when utilizing pressure carbon dioxide to descend, the present invention has installed accumulation of energy groove 10 between fluid reservoir 5 and vaporizer 9, the liquid CO in the fluid reservoir 5 2Pressure greater than the liquid CO in the accumulation of energy groove 10 2Pressure; Pressure 1.8-2.0MPa in the fluid reservoir 5 is high-pressure liquid CO 2After connecting pressure-reducing valve 6 on the pipeline between the two and being decompressed to 1.0-1.2MPa, the temperature of carbon dioxide sharply descends, utilize the temperature of decline that the refrigerant temperature that flows through is descended, again refrigerating medium is pumped into the refrigeration liquefying of realizing in the heat exchanger 8 gaseous carbon dioxide in the heat exchanger 8 of flowing through by circulating pump 11, and the CO of heat exchanger 8 2Gas feed directly is connected with the gas vent of reboiler 17, the gas vent of heat exchanger 8 directly with the liquid CO of liquefaction heat exchanger 4 2Inlet is connected, liquid CO 2Directly flow into the reboiler 17 from liquefaction heat exchanger 4 and pump into fluid reservoir 5 behind the removal impurity, so circulation just can make refrigeration compressor 16 quit work, and realizes purpose of energy saving.Therefore accumulation of energy groove 10 and heat exchanger 8 have promptly constituted the liquid carbon dioxide of the present invention cold retracting device that gasifies.
During concrete enforcement, still can operate as normal when not needing to carry out carbon dioxide recovery in order to make the present invention, can tube connector be set connecting between accumulation of energy groove 10 and the vaporizer 9, and shutoff valve 15 is installed thereon; Also can between described fluid reservoir 5 and vaporizer 9, directly connect a direct-furnish pipe, and on described direct-furnish pipe, direct-furnish valve 14 is installed.In addition, in order to realize the automatic work of circulating pump 11, can be at the mounting temperature sensor 12 on the cold system output pipe that carries of accumulation of energy groove 10.
CO of the present invention 2The method of attachment and the prior art of compressor, drier, reboiler are identical, and the prior aries that maybe can adopt all same as the prior art such as the steam supply air line of vaporizer, the supply of recirculated water and utilization are realized.
Operation principle of the present invention is:
Pressure is that the liquid CO 2 of 1.8~2.0MPa earlier is decompressed to 1.0~1.2MPa by pressure-reducing valve 6 in the fluid reservoir 5, the carbon dioxide liquid temperature is reduced to-40~-35 ℃, enter accumulation of energy groove 10, refrigerating medium in the accumulation of energy groove 10 is cooled to-35~-30 ℃, utilize circulating pump 11 that refrigerating medium is pumped in the heat exchanger 8, will directly carry the co 2 liquefaction (condensing temperature of carbon dioxide under 1.8-2.0MPa pressure is-20~-25 ℃) of kettle from reboiler 17.Refrigerating medium after the intensification returns in the accumulation of energy groove 10 and recycles.Post-decompression liquid CO 2 can be vaporizated into atmospheric carbon dioxide in the cooling refrigerating medium, enter original vaporizer and further be warmed up to-20~-30 ℃, guarantees the normal use of carbon dioxide, can save a large amount of steam because temperature raises simultaneously; Refrigerating medium enters heat exchanger 8 with co 2 liquefaction, and original refrigeration compressor 16 can be stopped using, and saves a large amount of electric energy.
The course of work of the present invention is:
When system's operate as normal certain hour, when storing liquid carbon dioxide in the fluid reservoir 5, can open valve 13,15, valve-off 14, circulating pump 11 is started working simultaneously.Liquid CO 2 enters pressure-reducing valve 6 from fluid reservoir 5, and carbon dioxide liquid pressure after pressure-reducing valve 6 decompressions are dammed drops to 1.0~1.2MPa; Temperature drops to-40~-35 ℃, and the refrigerant temperature in the accumulation of energy groove 10 is cooled to-35~-30 ℃.Refrigerating medium pumps into heat exchanger 8 by circulating pump 11 works done with refrigerating medium.When temperature sensor 12 detected refrigerant temperature and is lower than-30 ℃, pneumatic ball valve 3 was closed, and the carbon dioxide after drying dewaters enters heat exchanger 8.Through refrigerating medium cooling becoming liquid, flow into liquefaction heat exchanger 4.Provide the refrigeration compressor 16 of low-temperature refrigerant can quit work for liquefaction heat exchanger 4 this moment.
During carbon dioxide after not having drying to dewater, refrigerant temperature can be lower than-40 ℃, and this moment, valve- off 13,15 was opened valve 14, uses vaporizer 9 vaporization carbon dioxide liquid, guarantees rear end gas just commonly used.Be lower than-40 ℃ for a long time as refrigerant temperature, circulating pump 11 can quit work.
When follow-up gas equipment during without gas, no liquid carbon dioxide flows in the accumulation of energy groove, refrigerant temperature constantly raises, no low-temperature receiver, when refrigerant temperature is higher than-25 ℃, for liquefaction heat exchanger 4 provides the refrigeration compressor 16 of cryogenic refrigeration to restart work, normally liquefy to guarantee the carbon dioxide gas physical efficiency that reclaims.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.

Claims (4)

1. one kind has CO 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments, it comprises CO 2Compressor (1), CO 2Drier (2), reboiler (17), refrigeration compressor (16), liquefaction heat exchanger
(4), fluid reservoir (5) and vaporizer (9), CO 2The input and the CO of compressor (1) 2Source of the gas links to each other, CO 2The output and the CO of compressor (1) 2The input of drier (2) links to each other, CO 2The output of drier (2) links to each other with the input of reboiler (17), and the gas output end of reboiler (17) links to each other by the gas input of pneumatic ball valve (3) with liquefaction heat exchanger (4), enters the CO in the liquefaction heat exchanger (4) 2Gas is cooled to liquid CO through refrigeration compressor (16) 2, liquid CO 2Behind the middle removal of reboiler (17) impurity, pump in the fluid reservoir (5), it is characterized in that:
Between fluid reservoir (5) and vaporizer (9), accumulation of energy groove (10) is installed, the liquid CO in the fluid reservoir (5) 2Pressure greater than the liquid CO in the accumulation of energy groove (10) 2Pressure;
Accumulation of energy groove (10) is connected with heat exchanger (8), and the refrigerating medium in the accumulation of energy groove (10) circulates the CO of heat exchanger (8) by circulating pump (11) and connecting pipe between accumulation of energy groove (10) and heat exchanger (8) 2Gas feed directly is connected with the gas vent of reboiler (17), the gas vent of heat exchanger (8) directly with the liquid CO of liquefaction heat exchanger (4) 2Inlet is connected, liquid CO 2Directly flow into the reboiler (17) and pump into fluid reservoir (5) behind the removal impurity from liquefaction heat exchanger (4).
2. the CO that has according to claim 1 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments, it is characterized in that on the pipeline that connects between fluid reservoir (5) and the accumulation of energy groove (10), pressure-reducing valve (6) being installed.
3. the CO that has according to claim 1 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments, it is characterized in that on the tube connector that connects between accumulation of energy groove (10) and the vaporizer (9), shutoff valve (15) being installed; Between described fluid reservoir (5) and vaporizer (9), also be connected with the direct-furnish pipe, direct-furnish valve (14) is installed on described direct-furnish pipe.
4. the CO that has according to claim 1 2The CO of cold retracting device vaporizes 2Recycle complete set of equipments, it is characterized in that carrying on the cold system output pipe of described accumulation of energy groove (10) is equipped with temperature sensor (12).
CN2010102150221A 2010-07-01 2010-07-01 Complete equipment for CO2 recycling with CO2 vaporization and cool recycling device Active CN101871717B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108654905A (en) * 2018-06-27 2018-10-16 东莞理工学院 A kind of energy-saving closed anhydrous coating processes system
CN109028629A (en) * 2018-06-12 2018-12-18 山东神舟制冷设备有限公司 A kind of carbon dioxide refrigerating medium refrigeration system and its refrigerating method
CN111802912A (en) * 2020-05-26 2020-10-23 浙江大学 Energy-saving kettle
CN111895680A (en) * 2020-07-15 2020-11-06 广州市华达石化有限公司 Production control method adopting liquid carbon dioxide for refrigeration

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08311438A (en) * 1995-05-18 1996-11-26 Osaka Gas Co Ltd Refrigerant for production of liquefied carbon dioxide and method for operating liquefied carbon dioxide production equipment
CN1289720A (en) * 2000-10-17 2001-04-04 重庆理想科技有限公司 Process for preparing food-class high-purity liquid CO2
CN1393398A (en) * 2001-06-22 2003-01-29 中国华陆工程公司 Process for preparing food-class liquid CO2
CN2606739Y (en) * 2003-03-14 2004-03-17 大连理工大学 CO2 purifying device by adsorptive fine disstillation
EP1776553A1 (en) * 2004-07-16 2007-04-25 Statoil ASA Process and apparatus for the liquefaction of carbon dioxide
US20090255273A1 (en) * 2008-04-09 2009-10-15 Siemens Aktiengesellschaft Method and device for condensing CO2
JP2009242160A (en) * 2008-03-31 2009-10-22 Chugoku Electric Power Co Inc:The Test device and test method for carbon dioxide recovery system
CN101607708A (en) * 2009-07-27 2009-12-23 申屠晶 The co-production of technical grade and food-class liquid CO 2 and device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08311438A (en) * 1995-05-18 1996-11-26 Osaka Gas Co Ltd Refrigerant for production of liquefied carbon dioxide and method for operating liquefied carbon dioxide production equipment
CN1289720A (en) * 2000-10-17 2001-04-04 重庆理想科技有限公司 Process for preparing food-class high-purity liquid CO2
CN1393398A (en) * 2001-06-22 2003-01-29 中国华陆工程公司 Process for preparing food-class liquid CO2
CN2606739Y (en) * 2003-03-14 2004-03-17 大连理工大学 CO2 purifying device by adsorptive fine disstillation
EP1776553A1 (en) * 2004-07-16 2007-04-25 Statoil ASA Process and apparatus for the liquefaction of carbon dioxide
JP2009242160A (en) * 2008-03-31 2009-10-22 Chugoku Electric Power Co Inc:The Test device and test method for carbon dioxide recovery system
US20090255273A1 (en) * 2008-04-09 2009-10-15 Siemens Aktiengesellschaft Method and device for condensing CO2
CN101607708A (en) * 2009-07-27 2009-12-23 申屠晶 The co-production of technical grade and food-class liquid CO 2 and device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109028629A (en) * 2018-06-12 2018-12-18 山东神舟制冷设备有限公司 A kind of carbon dioxide refrigerating medium refrigeration system and its refrigerating method
CN109028629B (en) * 2018-06-12 2023-08-01 山东神舟制冷设备有限公司 Carbon dioxide secondary refrigerant refrigerating system and refrigerating method thereof
CN108654905A (en) * 2018-06-27 2018-10-16 东莞理工学院 A kind of energy-saving closed anhydrous coating processes system
CN111802912A (en) * 2020-05-26 2020-10-23 浙江大学 Energy-saving kettle
CN111895680A (en) * 2020-07-15 2020-11-06 广州市华达石化有限公司 Production control method adopting liquid carbon dioxide for refrigeration
CN111895680B (en) * 2020-07-15 2021-09-03 广州市华达石化有限公司 Production control method adopting liquid carbon dioxide for refrigeration

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