CN113280574A - Decarbonization workshop section CO2Compression refrigeration and CO2Purification for removing H2Device for measuring the position of a moving object - Google Patents

Decarbonization workshop section CO2Compression refrigeration and CO2Purification for removing H2Device for measuring the position of a moving object Download PDF

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Publication number
CN113280574A
CN113280574A CN202110570879.3A CN202110570879A CN113280574A CN 113280574 A CN113280574 A CN 113280574A CN 202110570879 A CN202110570879 A CN 202110570879A CN 113280574 A CN113280574 A CN 113280574A
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China
Prior art keywords
gas
inlet
rectifying tower
rectifying
outlet
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Application number
CN202110570879.3A
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Chinese (zh)
Inventor
刘金成
郭彦书
赵素峰
王洪忠
许建锋
赵艳平
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Priority to CN202110570879.3A priority Critical patent/CN113280574A/en
Publication of CN113280574A publication Critical patent/CN113280574A/en
Priority to CN202221116470.0U priority patent/CN217785616U/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0204—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the feed stream
    • F25J3/0223—H2/CO mixtures, i.e. synthesis gas; Water gas or shifted synthesis gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0266—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0252—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/02—Processes or apparatus using separation by rectification in a single pressure main column system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/74—Refluxing the column with at least a part of the partially condensed overhead gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/04—Recovery of liquid products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/80—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/80—Separating impurities from carbon dioxide, e.g. H2O or water-soluble contaminants
    • F25J2220/82—Separating low boiling, i.e. more volatile components, e.g. He, H2, CO, Air gases, CH4
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30—Compression of the feed stream
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Gas Separation By Absorption (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The invention discloses CO in a decarburization working section2Compression refrigeration and CO2Purification for removing H2Plant, CO2The gas is connected with the inlet of a cooler after passing through a compressor, and the outlet of the cooler is connected with CO2The feed inlets of the rectifying towers are connected to discharge CO2The gas at the top of the rectifying tower is connected with the inlet of the reflux tank after passing through a partial condenser, and the CO is discharged from the reflux tank2Liquid is connected with a reflux inlet of the rectifying tower and goes out of the reflux groove and contains H2CO of2Gas to coal or fuel systems, CO2The outlet at the bottom of the rectifying tower is connected with the inlet of a refrigeration evaporator, and the outlet of the refrigeration evaporator is connected with a urea working section. CO 22Passing the gas through CO2Rectifying in rectifying tower to obtain H2Isogas from CO2Separated from the liquid and containing H2CO of isogas2Coal conveying in the degassing chemical section or using the coal conveying as fuel gas; liquid CO2After the obtained product is refrigerated by a pressure-reducing system cold evaporator, the product which does not contain H is obtained2CO of2The gas is removed to the urea section, thereby reducing the synthesis of ureaAnd the probability of safety accidents caused by explosion of system tail gas and damage of equipment. The gas-liquid mixture feeding between the bubble point and the dew point provides heat for mass transfer and heat transfer in the tower, and a reboiler arranged at the tower bottom is omitted.

Description

Decarbonization workshop section CO2Compression refrigeration and CO2Purification for removing H2Device for measuring the position of a moving object
Technical Field
The invention relates to CO in a decarbonization section2Compression refrigeration and CO2Purification for removing H2Provided is a device.
Background
Raw material gas CO sent from an ammonia synthesis device to a urea section2Gas usually contains a certain amount of H2If the urea tail gas enters the urea synthesis system, the risk of urea tail gas explosion is increased, and the ammonia consumption of the urea system is increased. In the production of urea, to prevent corrosion of the plant, CO is fed to the feed2Adding certain air or oxygen into the gas, leaving the gas in the synthesis system without participating in the synthesis reaction of urea, washing and absorbing the gas by a high-pressure washer, and then adding NH in tail gas3、H2、O2Explosive gas is extremely easy to form, and once the explosive gas meets detonation factors, detonation can be generated, so that equipment is damaged, a large amount of explosive gas is leaked to pollute the environment, and casualties can be caused in serious cases.
Disclosure of Invention
The invention provides CO2Compression refrigeration and CO2Purification for removing H2A synergistic process device to overcome the defects of the prior art.
For the purposes of the invention, this decarbonization section CO2Compression refrigeration and CO2Purification for removing H2Plant characterized by being derived from CO2CO-containing of recovery column2The gas is connected with the gas inlet of the cooler after passing through the compressor, and the outlet of the cooler is connected with CO2The feed inlets of the rectifying towers are connected to discharge CO2The gas at the top of the rectifying tower is connected with the inlet of the reflux tank after passing through a partial condenser, and the CO is discharged from the reflux tank2Liquid is connected with a reflux inlet of the rectifying tower and goes out of the reflux groove and contains H2CO of2Gas to coal or fuel systems, CO2The outlet at the bottom of the rectifying tower is connected with the inlet of a refrigeration evaporator, and the outlet of the refrigeration evaporator is connected with a urea working section.
Obtained by the inventionThe technology is advanced: from CO2Recovery of CO from the column2Passing the gas through CO2Rectifying in a rectifying tower to obtain H2Isogas from CO2Separated from the liquid and containing H2CO of isogas2Coal conveying in the degassing chemical section or using the coal conveying as fuel gas; liquid CO2Can be refrigerated by a decompression system cold evaporator to obtain the product without H2CO of2The gas is removed to the urea section, thereby reducing the probability of safety accidents caused by the explosion of tail gas of a urea synthesis system and the damage of equipment, and simultaneously, the liquid CO2Can also be directly used as a product for external supply. CO 22The material feeding of the rectifying tower is a gas-liquid mixture with the temperature between the bubble point and the dew point, and heat is provided for mass transfer and heat transfer in the tower, so that a reboiler is omitted for a tower kettle.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in FIG. 1, this decarburization section CO2Compression refrigeration and CO2Purification for removing H2Apparatus comprising with CO2A dephlegmator 4 and a refrigeration evaporator 6 connected with the rectifying tower 3 for removing CO2Recovery of CO from the column2After being pressurized by the compressor 1, the gas is connected with a gas inlet of the cooler 2, and the gas-liquid mixture cooled by the cooler 2 enters CO2A feed inlet of the rectifying tower 3 is used for distilling CO2Cooling the gas at the top of the rectifying tower 3 by a dephlegmator 4, feeding the cooled gas into a reflux tank 5, and condensing the condensed CO2The liquid is separated from the gas phase in the reflux tank 5 and then is completely sent to CO through the outlet at the bottom of the reflux tank 52The top of the rectifying tower 3 is used as reflux liquid, and the reflux liquid is discharged from a reflux tank 5 and contains H2CO of2The gas is used for a coal conveying system or used as fuel gas to produce CO2Liquid CO at outlet at bottom of rectifying tower 32Directly used as product external supply or refrigerated and evaporated by a pressure reduction system cold evaporator 6, and does not contain H after evaporation2CO of2The gas is sent to the urea removal section.

Claims (1)

1. Decarburization working section CO2Compression refrigeration and CO2Purification for removing H2Plant characterized by being derived from CO2CO-containing of recovery column2The gas is connected with the gas inlet of the cooler after passing through the compressor, and the outlet of the cooler is connected with CO2The feed inlets of the rectifying towers are connected to discharge CO2The gas at the top of the rectifying tower is connected with the inlet of the reflux tank after passing through a partial condenser, and the CO is discharged from the reflux tank2Liquid is connected with a reflux inlet of the rectifying tower and goes out of the reflux groove and contains H2CO of2Gas to coal or fuel systems, CO2The outlet at the bottom of the rectifying tower is connected with the inlet of a refrigeration evaporator, and the outlet of the refrigeration evaporator is connected with a urea working section.
CN202110570879.3A 2021-05-25 2021-05-25 Decarbonization workshop section CO2Compression refrigeration and CO2Purification for removing H2Device for measuring the position of a moving object Withdrawn CN113280574A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110570879.3A CN113280574A (en) 2021-05-25 2021-05-25 Decarbonization workshop section CO2Compression refrigeration and CO2Purification for removing H2Device for measuring the position of a moving object
CN202221116470.0U CN217785616U (en) 2021-05-25 2022-05-11 Carbon dioxide compression refrigeration and purification dehydrogenation system for decarburization working section

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110570879.3A CN113280574A (en) 2021-05-25 2021-05-25 Decarbonization workshop section CO2Compression refrigeration and CO2Purification for removing H2Device for measuring the position of a moving object

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CN113280574A true CN113280574A (en) 2021-08-20

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CN202110570879.3A Withdrawn CN113280574A (en) 2021-05-25 2021-05-25 Decarbonization workshop section CO2Compression refrigeration and CO2Purification for removing H2Device for measuring the position of a moving object
CN202221116470.0U Active CN217785616U (en) 2021-05-25 2022-05-11 Carbon dioxide compression refrigeration and purification dehydrogenation system for decarburization working section

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113758147A (en) * 2021-09-29 2021-12-07 北京百利时能源技术股份有限公司 Carbon capture hydrogen plant before burning

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116212593A (en) * 2023-04-18 2023-06-06 河北正元氢能科技有限公司 Cryogenic carbon dioxide trapping device for urea production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113758147A (en) * 2021-09-29 2021-12-07 北京百利时能源技术股份有限公司 Carbon capture hydrogen plant before burning

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