CN102502632B - Carbon dioxide purification system integrated with synthesis gas desulfurization system - Google Patents
Carbon dioxide purification system integrated with synthesis gas desulfurization system Download PDFInfo
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- CN102502632B CN102502632B CN201110317407.3A CN201110317407A CN102502632B CN 102502632 B CN102502632 B CN 102502632B CN 201110317407 A CN201110317407 A CN 201110317407A CN 102502632 B CN102502632 B CN 102502632B
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Abstract
A carbon dioxide purification system integrated with a synthesis gas desulfurization system comprises a solution-incondensable gas separator. An inlet of the solution-incondensable gas separator is connected with an intermediate-pressure solution pipe, an impurity incondensable gas discharge pipe at the top of the solution-incondensable gas separator is connected with a main desulfurization system pipe, a liquid outlet pipe at the bottom of the solution-incondensable gas separator is connected with an inlet of a solution-carbon dioxide gas separator, a gas outlet at the top of the solution-carbon dioxide gas separator is connected with an inlet of a carbon dioxide gas-liquid separator through a cold energy recovery heat exchanger, a carbon dioxide compressor, a water cooler in back of the compressor and a quench heat exchanger, an impurity incondensable gas discharge pipe at the top of the carbon dioxide gas-liquid separator is connected with the main desulfurization system pipe, a liquid carbon dioxide discharge pipe at the bottom of the carbon dioxide gas-liquid separator is connected with a storage tank, and a solution discharge pipe at the bottom of the solution-carbon dioxide gas separator is connected with the main desulfurization system pipe through a power pump. The invention can purify and produce liquid carbon dioxide.
Description
Technical field
The invention belongs to Technology of Reducing Greenhouse Gas Emissions field, be specifically related to a kind of and CO 2 purification system synthetic gas desulfurization System integration.
Background technology
In " greenhouse gases " that cause global warming, CO
2be one of its main composition, the contribution degree of Greenhouse effect exceeded to the summation of other greenhouse gases.Carbon dioxide product injects the oil field of exploiting can carry out CO when improving oil recovery (EOR)
2seal up for safekeeping, by " causing harm in heaven ", changed into " for precious " with entering, when obtaining certain economic benefit, realize CO
2reduction of discharging; Also can be used for strengthening coal-bed gas exploitation (ECBM), soda pop, CO
2shielded welding, dry ice processed, tobacco shred bulking, manufacture cement, converter steelmaking and degradable plastics processed etc.
CO in chemical industry synthetic gas desulfurization device exhaust
2concentration is higher, is generally greater than 80%, be suitable for conventional low temperature fractionation or pressure swing adsorption technique and carry out purification processes, but this technique enters CO
2in the gas flow of compressor, contain nearly approximately 20% noncondensable gas, be impurity, thereby strengthened the loss of electric energy, and adsorber need be set and carry out drying and dehydrating, qualified in order to ensure system moisture content, it is dry that adsorber must be interrupted regeneration, increased again system power consumption when making system complex, and the adsorbent of molecular sieve using also needs periodic replacement to increase the discharge of system waste residue.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of this invention is to provide a kind of and CO 2 purification system synthetic gas desulfurization System integration, the production liquid carbon dioxide of can purifying.
For achieving the above object, the technical solution used in the present invention is:
A kind of CO 2 purification system of and synthetic gas desulfurization System integration, comprise solution noncondensable gas separator 3, the entrance of solution noncondensable gas separator 3 is communicated with by one-level decompression valve 2 and middle pressure solution liquid pipeline 1, the flash gas pipeline connection of solution noncondensable gas separator 3 top the first impurity noncondensable gas vent pipes 4 and main body desulphurization system, solution noncondensable gas separator 3 bottom liquids flow out pipeline and are communicated with through second depressurized variable valve 5 and solution carbon dioxide separator 6 entrances, the entrance of the 6 top gas outlets of solution carbon dioxide separator and cold recovery exchanger 7 is communicated with, the entrance of the outlet of cold recovery exchanger 7 and carbon dioxide compressor 8 is communicated with, after the outlet of carbon dioxide compressor 8 and compressor machine, the entrance of water cooler 9 is communicated with, after compressor machine, the entrance of the outlet of water cooler 9 and deep-cooling heat exchanger 10 is communicated with, the entrance of the outlet of deep-cooling heat exchanger 10 and carbonic acid gas gas-liquid separator 11 is communicated with, the flash gas pipeline connection of carbonic acid gas gas-liquid separator 11 top the second impurity noncondensable gas vent pipes 12 and main body desulphurization system, carbonic acid gas gas-liquid separator 11 bottom liquid carbon dioxide vent pipes 13 and storage tank are communicated with, solution carbon dioxide separator 6 bottom solution vent pipes are through the solution pipeline connection of power-driven pump 14 and main body desulphurization system.
Due to the present invention organically integrated CO 2 purification system and synthetic gas desulfurization system, be different from conventional low temperature fractionation and pressure swing adsorption technique, directly utilize special separating device never containing H
2s is rich in CO
2middle pressure solution liquid in separate and obtain highly purified CO
2air-flow, then enters carbon dioxide compressor and compresses, due to the minimizing of pressurized gas capacity, thereby power consumption, the consumption of the circulating cooling water yield and the consumption of deep cooling cold have been saved, and without adsorber drying and dehydrating is set, the flow process that makes to unite is simplified, easier operation; Meanwhile, owing in advance the partial CO 2 in main body desulphurization system waste gas being taken out, reduced the washing amount of tail gas, thereby reduced the consumption of system of subject de-mineralized water, the product purity obtaining at least meets the standard-required of national industrial liquid carbon dioxide product.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
Referring to accompanying drawing, a kind of CO 2 purification system of and synthetic gas desulfurization System integration, comprise solution noncondensable gas separator 3, the entrance of solution noncondensable gas separator 3 is communicated with by one-level decompression valve 2 and middle pressure solution liquid pipeline 1, the flash gas pipeline connection of solution noncondensable gas separator 3 top the first impurity noncondensable gas vent pipes 4 and main body desulphurization system pipeline, solution noncondensable gas separator 3 bottom liquids flow out pipeline and are communicated with through second depressurized variable valve 5 and solution carbon dioxide separator 6 entrances, the entrance of the 6 top gas outlets of solution carbon dioxide separator and cold recovery exchanger 7 is communicated with, the entrance of the outlet of cold recovery exchanger 7 and carbon dioxide compressor 8 is communicated with, after the outlet of carbon dioxide compressor 8 and compressor machine, the entrance of water cooler 9 is communicated with, after compressor machine, the entrance of the outlet of water cooler 9 and deep-cooling heat exchanger 10 is communicated with, the entrance of the outlet of deep-cooling heat exchanger 10 and carbonic acid gas gas-liquid separator 11 is communicated with, the flash gas pipeline connection of carbonic acid gas gas-liquid separator 11 top the second impurity noncondensable gas vent pipes 12 and main body desulphurization system, carbonic acid gas gas-liquid separator 11 bottom liquid carbon dioxide vent pipes 13 and storage tank are communicated with, solution carbon dioxide separator 6 bottom solution vent pipes are through the solution pipeline connection of power-driven pump 14 and main body desulphurization system.
Principle of work of the present invention is:
Middle pressure solution liquid is after solution noncondensable gas separator 3 separates, impurity noncondensable gas enters the flash gas pipeline of main body desulphurization system pipeline through the first impurity noncondensable gas vent pipe 4, liquid enters solution carbon dioxide separator 6 through second depressurized variable valve 5 and separates, solution enters the solution pipeline of main body desulphurization system through power-driven pump 14, gas is through cold recovery exchanger 7, carbon dioxide compressor 8, water cooler 9 after compressor machine, deep-cooling heat exchanger 10 enters carbon dioxide gas liquid/gas separator 11 after processing and separates, impurity noncondensable gas enters the flash gas pipeline of main body desulphurization system, liquid carbon dioxide enters storage tank harvesting.
Claims (1)
- One kind with the CO 2 purification system of synthetic gas desulfurization System integration, comprise solution noncondensable gas separator (3), it is characterized in that: the entrance of solution noncondensable gas separator (3) is communicated with by one-level decompression valve (2) and middle pressure solution liquid pipeline (1), the flash gas pipeline connection of solution noncondensable gas separator (3) top the first impurity noncondensable gas vent pipe (4) and main body desulphurization system pipeline, solution noncondensable gas separator (3) bottom liquid flows out pipeline and is communicated with through second depressurized variable valve (5) and solution carbon dioxide separator (6) entrance, the entrance of the outlet of solution carbon dioxide separator (6) top gas and cold recovery exchanger (7) is communicated with, the entrance of the outlet of cold recovery exchanger (7) and carbon dioxide compressor (8) is communicated with, after the outlet of carbon dioxide compressor (8) and compressor machine, the entrance of water cooler (9) is communicated with, the entrance of the outlet of water cooler after compressor machine (9) and deep-cooling heat exchanger (10) is communicated with, the entrance of the outlet of deep-cooling heat exchanger (10) and carbonic acid gas gas-liquid separator (11) is communicated with, the flash gas pipeline connection of carbonic acid gas gas-liquid separator (11) top the second impurity noncondensable gas vent pipe (12) and main body desulphurization system, carbonic acid gas gas-liquid separator (11) bottom liquid carbon dioxide vent pipe (13) and storage tank are communicated with, solution carbon dioxide separator (6) bottom solution vent pipe is through the solution pipeline connection of power-driven pump (14) and main body desulphurization system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110317407.3A CN102502632B (en) | 2011-10-18 | 2011-10-18 | Carbon dioxide purification system integrated with synthesis gas desulfurization system |
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|---|---|---|---|
| CN201110317407.3A CN102502632B (en) | 2011-10-18 | 2011-10-18 | Carbon dioxide purification system integrated with synthesis gas desulfurization system |
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| CN102502632A CN102502632A (en) | 2012-06-20 |
| CN102502632B true CN102502632B (en) | 2014-04-16 |
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| CN102877819B (en) * | 2012-10-11 | 2015-04-22 | 河南理工大学 | Carbon dioxide cyclic injection system of coal-bed gas well |
| CN106440661B (en) * | 2016-08-31 | 2020-03-31 | 惠生工程（中国）有限公司 | Energy-saving device and method for preparing high-purity liquid carbon dioxide |
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| CN1273374C (en) * | 2004-08-20 | 2006-09-06 | 中国石油化工股份有限公司 | Technology of combined extreacting carbon dioxide and hydrogen using medium varying gas decarbonization-varying pressure adsorption |
| CN202297145U (en) * | 2011-10-18 | 2012-07-04 | 中国华能集团清洁能源技术研究院有限公司 | Carbon dioxide purification device integrated with synthetic gas desulfurization system |
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