CN106415173B - For the gaseous state CO that liquefies2The method and apparatus of stream - Google Patents
For the gaseous state CO that liquefies2The method and apparatus of stream Download PDFInfo
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- CN106415173B CN106415173B CN201580004108.0A CN201580004108A CN106415173B CN 106415173 B CN106415173 B CN 106415173B CN 201580004108 A CN201580004108 A CN 201580004108A CN 106415173 B CN106415173 B CN 106415173B
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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
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
- F25J1/004—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by flash gas recovery
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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
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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
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
- F25J1/0045—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return stream
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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
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
- F25J1/0202—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration in a quasi-closed internal refrigeration loop
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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
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0203—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
- F25J1/0208—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle in combination with an internal quasi-closed refrigeration loop, e.g. with deep flash recycle loop
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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
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0262—Details of the cold heat exchange system
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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
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0262—Details of the cold heat exchange system
- F25J1/0264—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams
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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
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0292—Refrigerant compression by cold or cryogenic suction of the refrigerant gas
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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
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0294—Multiple compressor casings/strings in parallel, e.g. split arrangement
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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
- 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
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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
- 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
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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
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
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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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
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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
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
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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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/34—Details about subcooling of liquids
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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)
- Separation By Low-Temperature Treatments (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to a kind of for the equipment for containing at least gas stream of 95mol% carbon dioxide that liquefies, which includes: at least the first compression stage (C3, C4), and feed gas stream (1) is compressed in first compression stage；The device for being used to condense the compression stream formed by two concatenated phase separators, for partly condensing the stream and generating liquid flow；First heat exchanger (7)；For the second heat exchanger (9) of shell and tube heat exchanger；Device for being transported at least part of the liquid flow in the pipe of the first heat exchanger；Device for the first part for the liquid being cooled in second exchanger to be discharged as product liquid (11), the part is then inflated；Valve (V4)；For conveying the device of the second part for the liquid being cooled in second exchanger, the second part is expanded in the valve and is vaporized in the shell of first exchanger to form vaporization stream (15)；And the stream for compressing the vaporization at least part and the device (3A, 3B) that mixes it with the feed gas stream.
Description
Technical field
The present invention relates to one kind for the gaseous state CO that liquefies2The method and apparatus of stream.The stream contains the CO of at least 95 mol%2,
The practical even at least CO of 99mol%2。
The present invention is made of a kind of method, and this method makes it possible to liquefy containing impurity (such as H2Or N2) CO2Stream.
Background technique
From liquefaction mainly contains CO in the following manner known to JP-A-640840872Stream: dry this has in drier
Stream to be liquefied is allowed to cool to be sent to its partial liquefaction the first phase separator, will come from first phase separator
Liquid be sent into the second phase separator and extract the liquefied stream from second phase separator.It reheats and comes from second phase
The gas of separator and the upstream for being sent to the drier.
The method does not make it possible to that generated liquid is subcooled, when the liquid must be in pressure more lower than liquefaction pressure
This is proved to be useful when using under power.
It is an object of the invention to overcome the deficiencies of existing technologies.
Summary of the invention
A theme according to the present invention provides a kind of for containing at least 95mol%, practical even at least 99mol%
Carbon dioxide gas stream method, in which:
A) feed gas stream is compressed at least the first compression stage,
B) stream of the cooling compression is to condense it at least partly to generate a kind of liquid flow, by the first heat
It in exchanger rather than cools down in the first heat exchanger to condense it partly, the stream of the partial condensation is depressurized
And it is sent to the first phase separator, the liquid from first phase separator is depressurized and is then delivered to the separation of the second phase
Device and the liquid flow is taken out from second phase separator,
C) at least part of the liquid flow is cooled down in the pipe of second heat exchanger, which is shell-tube type
Heat exchanger,
D) product liquid serves as in the first part of the liquid be cooled in second exchanger, then depressurized,
E) in second exchanger be cooled the liquid second part or by make this liquid carry out decompression and
Part vaporize and generate liquid second part carried out in valve decompression and in the shell of first exchanger evaporate so as to
The stream of vaporization is formed, and
F) at least part of the stream of the vaporization is compressed and is mixed with the feed gas stream.
According to other optional aspects:
Gas from first phase separator is mixed with the feed gas stream in first pressure,
Gas from second phase separator is mixed with the feed gas stream,
By the gas from second phase separator and in the feed gas of second pressure more lower than the first pressure
Stream mixing,
By from second phase separator gas and the feed gas stream first compression stage combined upstream,
Liquid from first phase separator is not cooled in the upstream of decompression,
Second exchanger is last subcooler,
The final product is not cooled in the downstream of second exchanger,
It is recycled to first compression stage without the fraction of the product liquid,
The second part for the liquid being cooled in second exchanger is carried out depressurizing and individually existing in valve
It is reheated in the second heat exchanger to form the stream of vaporization.
Another theme according to the present invention provides a kind of for liquefying containing at least 95mol%, reality even at least
The equipment of the gas stream of the carbon dioxide of 99mol%, the equipment include at least: the first compression stage, in first compression stage
In the feed gas stream compressed；For condensing the stream of the compression to condense it partly to generate the dress of liquid flow
It sets；First heat exchanger, the stream of the compression is cooled to partly condense it in the first heat exchanger；For reducing
The device of the pressure of the stream of the partial condensation；The streaming of the decompression is entered into the first phase separator therein；For reducing from the
The device of the pressure of the liquid of one phase separator；Second phase separator；For the liquid of the decompression to be sent to second phase separation
The device of device and device for taking out the liquid flow from second phase separator；For the second heat of shell and tube heat exchanger
Exchanger (9)；Device for being sent at least part of the liquid flow in the pipe of the second heat exchanger；For as liquid
Body product takes out the device of following item: the first part of the liquid for i) being cooled in second exchanger, then depressurizing, or
Ii) the first of the liquid generated and making the liquid being cooled in second exchanger carry out decompression and part vaporizes
Part；Valve；For transporting the second part for the liquid being cooled in second exchanger or by subtracting this liquid
It presses and partly vaporizes and the second part of liquid that generates in the valve to carry out decompression and in second exchanger
It is vaporized in shell to form the device of the stream of vaporization；And the stream for compressing the vaporization at least part and by itself and this
The device of feed gas stream mixing.
According to other optional aspects, the equipment:
It include the device for the gas from first phase separator to be sent to the downstream of first compression stage,
It include the device for the gas from second phase separator to be sent to the upstream of first compression stage,
It include cooling device not between first phase separator and the valve.
The second heat exchanger is preferably the final subcooler of the equipment.
Detailed description of the invention
The present invention will be described in more detailed manner with reference to attached drawing, in which:
Fig. 1 is the schematic illustration of method and apparatus according to the invention.
Specific embodiment
In Fig. 1, contain at least 95mol%, the practical even at least stream 1 of the carbon dioxide of 99mol% for liquefying
Method with the cooling of the indirect heat exchange of cold source by being carried out.With CO2Feed, depend on its pressure, in recycle compressor 3
On intermediate stage between stage 3B and 3C carry out.
Until reaching enough pressure, this makes it possible to cold most latter two stage 3C, 3D compression stream 1 of this compressor 3
Coagulate the gas stream that the available cold source 5 (such as icy water) in the original position in heat exchanger 7 encounters.
The CO so condensed under high pressure2Continuous decompression of the experience in valve V1, V2 is generated into gas quilt will pass through
It is self cooling.
Occur under the inlet pressure for the last wheel 3D that the first decompression in valve V1 will preferably be in recycle compressor 3.
It therefore, can be at this derived from the gas 4 under balance after decompression of phase separator S1 generated after the decompression of the liquid
The upstream of the most rear-wheel of recycle compressor recycles.
Imagine the second stage of decompression of the liquid from phase separator S1 in the second valve V2 preferably to enter
Reduce the liquefied CO before main switch 92Pressure so that it is possible that saving CAPEX on this same exchanger.
Herein once again, selecting decompressed pressure to make it possible to be recycled in the upstream of penultimate compression wheel 3C from second
The gas 6 of phase separator S2.
This decompression sequence in valve V1, V2 make it possible to by last compression stage as much as possible again
Recycle the CO of cooling liquid while influence to limit OPEX2 18。
Once partly reducing pressure and cooling, liquid CO218 stream will enter heat exchanger 9 so as to strong wherein
Supercooling.After supercooling, liquid 18 is divided into two parts.It is depressurized in valve V3 to be formed in customer requirement the part 11
Pressure (typically 7 absolute pressures) under product liquid.After depressurizing in valve V4, a part 13 is directed to liquid in heat exchanger 9
Body 18 evaporates.Decompression in valve V4 make the liquid until reach with the temperature of three phase point (- 56.5 DEG C) as close to temperature
Degree.
The low pressure CO of vaporization215 are then recirculated into first stage 3A, 3B of recycle compressor 3 to ensure
100% liquefaction yield.It is mixed with stream 1 between in the stage, 3B is with 3.
Above-mentioned heat exchanger 9 will be shell-tube type exchanger, wherein the cooling and liquid 13 in these pipes of stream 18
It is depressurized to the pressure close to the pressure of three phase point, in the shell so as to the anything for avoiding the possibility due to this same stream from freezing
Therefore risk (especially under following situations, is drawn too many and causes to press wherein the liquid 15 vaporized will return to compressor 3 therein
Power drops to CO2Three phase point pressure under).
Claims (9)
1. a kind of for the method for containing at least gas stream of the carbon dioxide of 95mol% that liquefies, in which:
A) feed gas stream (1) is compressed at least the first compression stage (3C, 3D),
B) stream of the cooling compression is to condense it at least partly to generate a kind of liquid flow, by the first heat exchange
It in device (7) rather than cools down in second heat exchanger (9) to condense it partly, the stream of the partial condensation is depressurized
And it is sent to the first phase separator (S1), the liquid from first phase separator is depressurized and is then delivered to the second phase
Separator (S2), and the liquid flow is taken out from second phase separator,
It is characterized by:
C) at least part of the liquid flow is cooled down in the pipe of second heat exchanger (9), which is shell-tube type
Heat exchanger,
D) product liquid serves as in the first part (11) of the liquid be cooled in the second heat exchanger, then depressurized,
E) second part (13) for the liquid being cooled in the second heat exchanger is depressurized in valve (V4) so as to be somebody's turn to do
Liquid reaches the temperature and pressure of the three phase point close to the cooled liquid, and evaporates in the shell of the second heat exchanger
To form the stream (15) of vaporization, and
F) at least part of the stream of the vaporization is compressed and is mixed with the feed gas stream.
2. the method as described in claim 1, wherein the gas (4) from first phase separator (S1) is pressed in first
The feed gas stream of power mixes.
3. method according to claim 2, wherein by gas (6) and the feed gas from second phase separator (S2)
Stream mixing.
4. method as claimed in claim 3, wherein by from second phase separator (S2) gas (6) in than this
The feed gas stream of the lower second pressure of one pressure mixes.
5. method as claimed in claim 4, wherein by gas and the feed gas stream from second phase separator (S2)
In the combined upstream of first compression stage.
6. the method as described in one of above claim, wherein the liquid (14) from first phase separator (S1) subtracts at this
The upstream of pressure is not cooled.
7. the method as described in one of claim 1-5, wherein the second heat exchanger (9) is last subcooler.
8. the method for claim 7, wherein the final product is not cooled in the downstream of the second heat exchanger.
9. the method as described in claim 1, wherein feed gas stream (1) contains at least carbon dioxide of 99mol%.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1450201A FR3016436B1 (en) | 2014-01-10 | 2014-01-10 | METHOD AND APPARATUS FOR LIQUEFACTING A GASEOUS CO2 CURRENT |
| FR1450201 | 2014-01-10 | ||
| PCT/FR2015/050049 WO2015104510A2 (en) | 2014-01-10 | 2015-01-09 | Method and device for the liquefaction of a gaseous co2 stream |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106415173A CN106415173A (en) | 2017-02-15 |
| CN106415173B true CN106415173B (en) | 2019-09-27 |
Family
ID=50473554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580004108.0A Active CN106415173B (en) | 2014-01-10 | 2015-01-09 | For the gaseous state CO that liquefies2The method and apparatus of stream |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20160327333A1 (en) |
| EP (1) | EP3092453B1 (en) |
| CN (1) | CN106415173B (en) |
| FR (1) | FR3016436B1 (en) |
| WO (1) | WO2015104510A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108895765A (en) * | 2018-05-22 | 2018-11-27 | 中石化宁波工程有限公司 | A kind of co 2 liquefaction device and liquifying method |
| FR3088416B1 (en) * | 2018-11-08 | 2020-12-11 | Air Liquide | METHOD AND APPARATUS FOR LIQUEFACTION OF A GAS CURRENT CONTAINING CARBON DIOXIDE |
| CA3129776A1 (en) * | 2019-03-29 | 2020-10-08 | Miles L. Abarr | Co2 separation & liquefaction system and method |
| AU2022203999A1 (en) | 2021-06-09 | 2023-01-05 | Technip Energies France | Process for the recovery of a liquefied CO2 stream from an industrial waste gas and associated installation |
| US11635255B1 (en) | 2022-04-08 | 2023-04-25 | Axip Energy Services, Lp | Liquid or supercritical carbon dioxide capture from exhaust gas |
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| EP0293882A2 (en) * | 1987-06-02 | 1988-12-07 | Union Carbide Corporation | Process to produce liquid cryogen |
| US5141543A (en) * | 1991-04-26 | 1992-08-25 | Air Products And Chemicals, Inc. | Use of liquefied natural gas (LNG) coupled with a cold expander to produce liquid nitrogen |
| CN101052852A (en) * | 2004-07-16 | 2007-10-10 | 斯塔托伊尔公司 | Method and device for liquifiing carbon dioxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6484087A (en) | 1987-09-24 | 1989-03-29 | Jgc Corp | Manufacture of liquefied carbon dioxide |
| AU745739B2 (en) * | 1998-01-08 | 2002-03-28 | Satish Reddy | Autorefrigeration separation of carbon dioxide |
| US5974829A (en) * | 1998-06-08 | 1999-11-02 | Praxair Technology, Inc. | Method for carbon dioxide recovery from a feed stream |
| US7850763B2 (en) * | 2007-01-23 | 2010-12-14 | Air Products And Chemicals, Inc. | Purification of carbon dioxide |
| CN100565060C (en) * | 2007-04-28 | 2009-12-02 | 重庆大山燃气设备有限公司 | A kind of method of natural gas liquefaction and device thereof |
| US9163188B2 (en) * | 2009-07-24 | 2015-10-20 | Bp Alternative Energy International Limited | Separation of carbon dioxide and hydrogen |
| CN101666573B (en) * | 2009-09-21 | 2011-06-08 | 华北电力大学 | CO2 separation and compression integrated method |
| FR2972792B1 (en) * | 2011-03-16 | 2017-12-01 | L'air Liquide Sa Pour L'etude Et L'exploitation Des Procedes Georges Claude | METHOD AND APPARATUS FOR CO2 LIQUEFACTION |
| FR2974167B1 (en) * | 2011-04-14 | 2015-11-06 | Air Liquide | METHOD AND APPARATUS FOR LIQUEFACTING A GAS |
| CN102269509B (en) * | 2011-07-14 | 2013-10-09 | 华北电力大学 | CO2 compression and liquefaction system combined with waste heat driven refrigeration |
| KR101153103B1 (en) * | 2011-10-11 | 2012-06-04 | 한국가스공사연구개발원 | Carbon dioxide re-liquefaction process |
-
2014
- 2014-01-10 FR FR1450201A patent/FR3016436B1/en not_active Expired - Fee Related
-
2015
- 2015-01-09 WO PCT/FR2015/050049 patent/WO2015104510A2/en active Application Filing
- 2015-01-09 EP EP15701557.9A patent/EP3092453B1/en active Active
- 2015-01-09 CN CN201580004108.0A patent/CN106415173B/en active Active
- 2015-01-09 US US15/110,458 patent/US20160327333A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0293882A2 (en) * | 1987-06-02 | 1988-12-07 | Union Carbide Corporation | Process to produce liquid cryogen |
| US5141543A (en) * | 1991-04-26 | 1992-08-25 | Air Products And Chemicals, Inc. | Use of liquefied natural gas (LNG) coupled with a cold expander to produce liquid nitrogen |
| CN101052852A (en) * | 2004-07-16 | 2007-10-10 | 斯塔托伊尔公司 | Method and device for liquifiing carbon dioxide |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3092453A2 (en) | 2016-11-16 |
| FR3016436A1 (en) | 2015-07-17 |
| FR3016436B1 (en) | 2019-05-10 |
| CN106415173A (en) | 2017-02-15 |
| EP3092453B1 (en) | 2018-06-13 |
| WO2015104510A3 (en) | 2015-12-10 |
| US20160327333A1 (en) | 2016-11-10 |
| WO2015104510A2 (en) | 2015-07-16 |
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