CN111365941A - Compression liquefaction device based on carbon dioxide entrapment - Google Patents

Compression liquefaction device based on carbon dioxide entrapment Download PDF

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Publication number
CN111365941A
CN111365941A CN202010121271.8A CN202010121271A CN111365941A CN 111365941 A CN111365941 A CN 111365941A CN 202010121271 A CN202010121271 A CN 202010121271A CN 111365941 A CN111365941 A CN 111365941A
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communicated
stage
inlet
outlet
tower
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CN202010121271.8A
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Chinese (zh)
Inventor
樊强
陶继业
刘沅
罗丽珍
李小宇
任永强
许世森
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Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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Priority to CN202010121271.8A priority Critical patent/CN111365941A/en
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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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0027—Oxides of carbon, e.g. CO2
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/0062—Light or noble gases, mixtures thereof
    • 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
    • F25J2200/40—Features relating to the provision of boil-up in the bottom of a column
    • 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
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/06—Splitting of the feed stream, e.g. for treating or cooling in different ways
    • 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
    • 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
    • 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
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/90—Processes or apparatus involving steps for recycling of process streams the recycled stream being boil-off gas from storage
    • 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/12—External refrigeration with liquid vaporising loop
    • 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/80—Quasi-closed internal or closed external carbon dioxide refrigeration cycle
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/62—Details of storing a fluid in a tank
    • 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)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The invention discloses a compression liquefaction device based on carbon dioxide capture, and CO2The outlet of the buffer tank is communicated with the first-stage inlet of the multi-stage compressor, the first-stage outlet of the multi-stage compressor is communicated with the second-stage inlet of the multi-stage compressor sequentially through the first cooler, the first water separator and the fine desulfurization tank, the second-stage outlet of the multi-stage compressor is communicated with the third-stage inlet of the multi-stage compressor through the second cooler and the second water separator, the third-stage outlet of the multi-stage compressor is communicated with the inlet of the dryer through the third cooler, the precooler and the third water separator, the outlet of the dryer is divided into two paths after passing through the filter, wherein one path is communicated with CO2The tower chassis tube inlet of the purification tower is communicated with the other path of CO2Inlet of the liquefier is communicated with CO2Outlet of tower base plate pipe of purifying tower and CO2Inlet of the liquefier is communicated with CO2Outlet of liquefier and CO2The inlet of the purifying tower is communicated, and the device has the characteristics of simple structure, reasonable heat exchange and low energy consumption.

Description

Compression liquefaction device based on carbon dioxide entrapment
Technical Field
The invention belongs to the technical field of energy chemical industry, and relates to a compression liquefying device based on carbon dioxide capture.
Background
The carbon capture technology has been rapidly developed, and it is a major carbon capture technology at present that carbon dioxide produced in industry and related energy industry is separated and then transported and stored in places isolated from the atmosphere, such as the sea bottom or the underground, by means of carbon storage. Due to CO2Are diatomic molecules with a density heavier than air, and must be compressed and liquefied after carbon capture to become a liquid for transport and storage. The common 'cold and heat disease' problem exists in the process of compression and liquefaction, and CO is compressed in the engineering2The temperature is increased, and the temperature is reduced in the liquefaction process, so that the heat matching between systems is very important.
Therefore, developing a compression liquefaction process with simple system, reasonable heat exchange and low energy consumption is a significant task.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a compression liquefying device based on carbon dioxide capture, which has the characteristics of simple structure, reasonable heat exchange and low energy consumption.
In order to achieve the above object, the compression liquefaction device based on carbon dioxide capture comprises gaseous CO2Input pipe, CO2Buffer tank, multistage compressor, first cooler, first water knockout drum, fine desulfurization jar, second cooler, second water knockout drum, third cooler, precooler, third water knockout drum, desicator, filter, CO2Purification column and CO2A storage tank;
gaseous CO2Outlet of input pipe and CO2The inlet of the buffer tank is communicated with CO2Outlet and multistage pressure of buffer tankThe first-stage inlet of the compressor is communicated, the first-stage outlet of the multi-stage compressor is communicated with the second-stage inlet of the multi-stage compressor sequentially through the first cooler, the first water separator and the fine desulfurization tank, the second-stage outlet of the multi-stage compressor is communicated with the third-stage inlet of the multi-stage compressor through the second cooler and the second water separator, the third-stage outlet of the multi-stage compressor is communicated with the inlet of the dryer through the third cooler, the precooler and the third water separator, the outlet of the dryer is divided into two paths after passing through the filter, wherein one path is communicated with CO2The tower chassis tube inlet of the purification tower is communicated with the other path of CO2Inlet of the liquefier is communicated with CO2Outlet of tower base plate pipe of purifying tower and CO2Inlet of the liquefier is communicated with CO2Outlet of liquefier and CO2The inlet of the purifying tower is communicated with CO2Outlet of the purification column and CO2The inlets of the storage tanks are communicated.
CO2Outlet of the storage tank through CO2The delivery pump is communicated with external equipment.
The precooler is a shell-and-tube two-stage cooling device, and the tube pass is a heat medium CO2The first stage shell side is from CO2Cold medium CO at the top of the purifying tower2And the second stage shell pass is cold medium liquid ammonia.
CO2The liquefier is a shell-and-tube heat exchanger, and the tube pass is heat medium CO2The shell side is derived from CO2And (4) cold medium liquid ammonia of the ice machine set.
CO2The purifying tower consists of a tower kettle, a coil pipe, tower body filler and a tower top condenser.
And further comprises CO2Set of ice plants, CO2Ice making machine set and CO2The cold working medium side of the liquefier is communicated.
The invention has the following beneficial effects:
when the compression liquefaction device based on carbon dioxide capture is in specific operation, gaseous CO2Compressed by a multi-stage compressor, cooled, desulfurized, divided and dried among all stages of compression, and then enters CO2With CO from the liquefier2Heat exchange of low-temperature liquid ammonia of ice machine set to liquid CO2Liquefied CO2Into CO2Purified in the purifying tower and then discharged by a conveying pump for sealing, and a precooler is arranged to reduce CO2Cold consumption of liquefier while using cold and hot CO2The purification purpose is realized through mutual heat exchange, the loss of cold energy is small, the energy consumption is low, the heat exchange is reasonable, the structure is simple, the operation is convenient, and the realization is convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein 1 is CO2A buffer tank, 2 a multistage compressor, 3 a first cooler, 4 a first water separator, 5 a fine desulfurization tank, 6 a second cooler, 7 a second water separator, 8 a third cooler, 9 a precooler, 10 a third water separator, 11 a dryer, 12 a filter, 13 CO2Liquefier, 14 is CO2A purifying tower for 15 is CO2Ice making plant, 16 is CO2Storage tank, 17 is CO2A delivery pump.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to FIG. 1, the compression liquefaction plant based on carbon dioxide capture according to the present invention comprises gaseous CO2Input pipe, CO2The system comprises a buffer tank 1, a multistage compressor 2, a first cooler 3, a first water separator 4, a fine desulfurization tank 5, a second cooler 6, a second water separator 7, a third cooler 8, a precooler 9, a third water separator 10, a dryer 11, a filter 12 and CO2Purification column 14 and CO2A storage tank 16; gaseous CO2Outlet of input pipe and CO2The inlet of the buffer tank 1 is communicated with CO2The outlet of the buffer tank 1 is communicated with the first-stage inlet of the multi-stage compressor 2, the first-stage outlet of the multi-stage compressor 2 is communicated with the second-stage inlet of the multi-stage compressor 2 through a first cooler 3, a first water separator 4 and a fine desulfurization tank 5 in sequence, the second-stage outlet of the multi-stage compressor 2 is communicated with the third-stage inlet of the multi-stage compressor 2 through a second cooler 6 and a second water separator 7, the third-stage outlet of the multi-stage compressor 2 is communicated with the inlet of a drier 11 through a third cooler 8, a precooler 9 and a third water separator 10, and the outlet of the drier 11 is communicated with the inlet of the drier 11 after passing through a filter 12Is divided into two paths, wherein one path is connected with CO2The tower chassis pipe inlet of the purifying tower 14 is communicated with the other path of CO2The inlet of the liquefier 13 is communicated with CO2Column base plate tube outlet and CO of purification column 142The inlet of the liquefier 13 is communicated with CO2Outlet of the liquefier 13 and CO2The inlet of the purifying tower 14 is communicated with CO2Outlet of the refining column 14 and CO2The inlet of the reservoir 16 is in communication.
CO2The outlet of the storage tank 16 is passed through CO2The delivery pump 17 is communicated with external equipment; the precooler 9 is a shell-and-tube two-stage cooling device, and the tube pass is a heat medium CO2The first stage shell side is from CO2Cold medium CO at top of purifying tower 142The second stage shell pass is cold medium liquid ammonia; CO 22The liquefier 13 is a shell-and-tube heat exchanger with a tube pass of heat medium CO2The shell side is derived from CO2Liquid ammonia as a cold medium of the ice making unit 14; CO 22The purifying tower 14 consists of a tower kettle, a coil pipe, tower body filler and a tower top condenser; the invention also includes CO2Ice bank 15, CO2Set of ice plants 15 with CO2The cold working medium side of the liquefier 13 is communicated.
The specific working process of the invention is as follows:
gaseous CO2By CO2The buffer tank 1 enters a first stage of a multi-stage compressor 2 for first-stage compression, and CO after the first-stage compression2The temperature is reduced by a first cooler 3, and the water is divided by a first water divider 4 and then enters a fine desulfurization tank 5 to remove H2S and then the CO is sent back to the second stage of the multistage compressor 2 for second-stage compression, and the CO after the second-stage compression2Cooling by a second cooler 6, dividing water by a second water divider 7, sending back to the third stage of the multi-stage compressor 2 for third-stage compression, and compressing CO in the third stage2The temperature is reduced by a third cooler 8 and a precooler 9, and then the water is divided by a third water divider 10 and then is sent to a dryer 11 for drying; dried CO2The solid particles are removed in a filter 12 and then divided into two paths, wherein one path is fed with CO2In the bottom coil of the purification column 14 with the cryogenic liquid CO2CO is returned after heat exchange2In the liquefier 13; the other path enters into CO2In the liquefier 13 with CO2Liquid ammonia from the ice machine set 14 is cooled to liquid CO through heat exchange2Liquid CO2Into CO2Purified by the purifying tower 14 and then enters CO2In the storage tank 16, the CO passes through2The transfer pump 17 is sent to sequestration.
The CO is2The purifying tower 14 is composed of a tower kettle, a coil pipe, tower body fillers and a tower top condenser, and during operation, the product purity can be improved by increasing the heat of the tower kettle and reducing the cold quantity of the tower top, and the product yield can be increased by increasing the cold quantity of the tower top and reducing the heat of the tower kettle.

Claims (6)

1. A compression liquefaction device based on carbon dioxide capture is characterized by comprising gaseous CO2Input pipe, CO2The system comprises a buffer tank (1), a multi-stage compressor (2), a first cooler (3), a first water separator (4), a fine desulfurization tank (5), a second cooler (6), a second water separator (7), a third cooler (8), a precooler (9), a third water separator (10), a dryer (11), a filter (12), CO2Purification column (14) and CO2A tank (16);
gaseous CO2Outlet of input pipe and CO2The inlet of the buffer tank (1) is communicated with CO2The outlet of the buffer tank (1) is communicated with the first-stage inlet of the multi-stage compressor (2), the first-stage outlet of the multi-stage compressor (2) is communicated with the second-stage inlet of the multi-stage compressor (2) through a first cooler (3), a first water separator (4) and a fine desulfurization tank (5) in sequence, the second-stage outlet of the multi-stage compressor (2) is communicated with the third-stage inlet of the multi-stage compressor (2) through a second cooler (6) and a second water separator (7), the third-stage outlet of the multi-stage compressor (2) is communicated with the inlet of a drier (11) through a third cooler (8), a precooler (9) and a third water separator (10), the outlet of the drier (11) is divided into two paths after passing through a filter (12), wherein one path is communicated with the CO inlet of the drier (112The tower chassis pipe inlet of the purification tower (14) is communicated with the other path of CO2The inlet of the liquefier (13) is communicated with CO2Outlet of tower bottom plate pipe of purifying tower (14) and CO2The inlet of the liquefier (13) is communicated with CO2An outlet of the liquefier (13) and CO2The inlet of the purifying tower (14) is communicated with CO2An outlet of the purification column (14) andCO2the inlet of the storage tank (16) is communicated.
2. The carbon dioxide capture-based compression liquefaction device of claim 1, characterized in that CO2The outlet of the storage tank (16) is passed through CO2The delivery pump (17) is communicated with external equipment.
3. The compression liquefaction device based on carbon dioxide capture as claimed in claim 1, characterized in that the precooler (9) is a shell-and-tube two-stage cooling, the tube side being a heat medium CO2The first stage shell side is from CO2The cold medium CO at the top of the purifying tower (14)2And the second stage shell pass is cold medium liquid ammonia.
4. The carbon dioxide capture-based compression liquefaction device of claim 1, characterized in that CO2The liquefier (13) is a shell-and-tube heat exchanger, and the tube pass is heat medium CO2The shell side is derived from CO2The cold medium of the ice machine set (14) is liquid ammonia.
5. The carbon dioxide capture-based compression liquefaction device of claim 1, characterized in that CO2The purification tower (14) consists of a tower kettle, a coil pipe, tower body filler and a tower top condenser.
6. The carbon dioxide capture-based compression liquefaction device of claim 1, further comprising CO2Set of ice units (15), CO2An ice making unit (15) and CO2The cold working medium side of the liquefier (13) is communicated.
CN202010121271.8A 2020-02-26 2020-02-26 Compression liquefaction device based on carbon dioxide entrapment Pending CN111365941A (en)

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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

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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