EP3394535A1 - Verfahren und vorrichtung zur kryogenen zerlegung von synthesegas - Google Patents
Verfahren und vorrichtung zur kryogenen zerlegung von synthesegasInfo
- Publication number
- EP3394535A1 EP3394535A1 EP16809645.1A EP16809645A EP3394535A1 EP 3394535 A1 EP3394535 A1 EP 3394535A1 EP 16809645 A EP16809645 A EP 16809645A EP 3394535 A1 EP3394535 A1 EP 3394535A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separation column
- carbon monoxide
- methane
- separation
- column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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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
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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
- F25J3/0228—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
- F25J3/0233—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 CnHm with 1 carbon atom or more
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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
- F25J3/0228—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
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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
- F25J3/0228—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
- F25J3/0261—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 monoxide
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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
- 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
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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
- 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
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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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/70—Refluxing the column with a condensed part of the feed stream, i.e. fractionator top is stripped or self-rectified
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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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/78—Refluxing the column with a liquid stream originating from an upstream or downstream fractionator column
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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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
- F25J2200/94—Details relating to the withdrawal point
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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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
- F25J2200/96—Dividing wall column
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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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
- F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
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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
- F25J2210/42—Nitrogen
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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
- F25J2270/12—External refrigeration with liquid vaporising 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
- F25J2270/00—Refrigeration techniques used
- F25J2270/42—Quasi-closed internal or closed external nitrogen refrigeration cycle
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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
- F25J2270/902—Details about the refrigeration cycle used, e.g. composition of refrigerant, arrangement of compressors or cascade, make up sources, use of reflux exchangers etc.
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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
- F25J2270/904—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by liquid or gaseous cryogen in an open loop
Definitions
- the invention relates to a method for the cryogenic disassembly of a predominantly consisting of hydrogen and carbon monoxide, methane-containing feed gas, which is partially condensed by cooling to a largely from
- the invention relates to a device for carrying out the
- the condensation process makes it possible to produce a carbon monoxide product with a yield of more than 90%, which has a methane content of less than 400 vppm and which can therefore be used, for example, to produce monoethylene glycol without a further purification step .
- a cooling circuit is used in the prior art, which uses either externally supplied nitrogen or internally generated carbon monoxide as the refrigerant ,
- Each of the two variants is complex and represents a significant cost factor that has a significant impact on the economics of gas separation.
- part of the process streams obtained in the CO / CH 4 separation column and heated against the process streams to be cooled are heated condensed gas phase rich in carbon monoxide, liquefied against process streams to be heated and depressurized at the top of the CO / CH 4 column.
- Part of the resulting liquid phase forms a column return which achieves the required purity of the carbon monoxide product while the remainder is further relaxed to provide the peak refrigeration for the process.
- a nitrogen cycle is used in the prior art to provide the peak cooling for the process and produce a reflux for the CO / CH 4 separation column equipped therewith with a condenser cooled with liquid nitrogen at the top of the column provides a temperature difference to drive an internal carbon monoxide return.
- Both refrigeration circuits are driven by multi-stage compressors. While a two-stage, relatively low-cost compressor can be used in a nitrogen cycle, a carbon monoxide compressor incurs significantly higher costs. The reason for this is, on the one hand, that a carbon monoxide compressor must be designed with at least three compressor stages in order to avoid thermal decomposition of carbon monoxide and resulting soot deposits. On the other hand, it must be explosion-proof and be operated in a particularly secure area in order to prevent leaks
- the costs of the compressor of a carbon monoxide cycle are therefore up to 50% higher than those for a compressor that is suitable, a corresponding nitrogen cycle
- the object of the present invention is therefore to specify a method of the generic type and a device for carrying it out, which make it possible to obtain a carbon monoxide product at a reduced cost compared to the prior art.
- This object is achieved in that deducted from the H 2 separation column, a low-methane stream and then the second separation column is charged as reflux.
- the second liquid phase largely consisting of carbon monoxide and methane collects in the bottom of the H 2 separation column, while a hydrogen-rich gas phase is withdrawn overhead. From the bottom space rises a produced by the circulation evaporator, containing hydrogen, carbon monoxide and methane gas phase upwards and is over with the first, in countercurrent liquid phase over
- the invention makes use of the fact that within the H 2 separation column there is at least one stream with a composition suitable for use as reflux in the CO / CH 4 separation column.
- this stream is low in methane and has a low hydrogen content.
- the low-methane stream is withdrawn in gaseous form from the H 2 separation column and subsequently heated by cooling against
- Hydrogen fan part for use in the CO / CH 4 distillation column too high.
- the withdrawal point for the low-methane gas phase is located between the bottom space and the third practical separation stage of the H 2 separation column.
- the CO / CH 4 separation column is preferably operated at a pressure which permits the carbon monoxide-rich gas phase, after heating against the process streams to be cooled, to be delivered to a consumer at a pressure equal to or greater than that demanded by the customer for the carbon monoxide product.
- the CO / CH 4 separation column is operated at a pressure between 8 and 10 bar (a).
- the method according to the invention is proposed to provide cooling, in particular the peak cooling required for the process, via a cooling circuit in which nitrogen is used as the refrigerant.
- the nitrogen cycle has no connection to a flammable and / or poisonous process gas, so that it is expedient to use a compressor for its drive, which is neither explosion-proof nor operated in a specially secured zone.
- the invention relates to a device for the cryogenic disassembly of a predominantly consisting of hydrogen and carbon monoxide, methane-containing feed gas, with at least one heat exchanger for cooling and partial condensation of the feed gas, a separator in which a first liquid phase can be separated from the partially condensed feed gas, a heated via a water heater H 2 -trennkolonne in which from the first liquid phase by separation of hydrogen, a second liquid phase can be generated, and a CO / CH 4 separation column, in which from the second liquid phase, a high carbon monoxide rich gas phase can be separated with a purity that allows their release as carbon monoxide product.
- the H 2 separation column is connected to the CO / CH 4 separation column such that withdrawn a low-methane stream via a removal point from the H 2 separation column and the CO / CH 4 separation column as Return can be abandoned.
- the invention provides a cooling device which is arranged between the two separation columns.
- the cooling device is a heat exchanger which is also used for cooling and / or partial condensation of the feed gas.
- the cooling device as
- the H 2 separation column has a plurality of vertically stacked
- Mass transfer devices which represent practical separation stages and which are preferably designed as a sieve plates and / or slot bell bottoms and / or structured packings and / or Brownenia structure. Below the practical separation stages is the bottom space of the column to which heat can be supplied via the circulation heater.
- the removal point is preferably below the sixth practical separation stage of the first separation column. It is particularly preferably arranged between the sump space and the third practical separation stage.
- the H 2 separation column in its lower part on a vertical partition, which the
- the liquid line is designed in the simplest case as a pipeline and reasonably includes no means for cooling the methane-poor liquid phase.
- a particularly preferred variant of the device according to the invention provides a nitrogen cycle as a refrigerant, over the or the heat exchanger for cooling and partial condensation of the feed gas extending cooling circuit through which in particular the required at the separator peak cooling for the gas separation can be provided.
- the cooling circuit expediently comprises a non-explosion-proof compressor with less than three compressor stages.
- the cooling circuit can be arranged on the suction side of the compressor
- Feed device for introducing gaseous nitrogen into the circuit, and a removal device for removing excess nitrogen from the circulation, which is located on the pressure side of the compressor.
- the cooling circuit comprises a further heat exchanger for
- FIG. 1 shows an embodiment of the process according to the invention in which a stream of material provided as reflux for the CO / CH 4 separation column is withdrawn in gaseous form from the H 2 separation column.
- FIG. 2 shows another embodiment of the process according to the invention, in which a stream provided as reflux for the second CO / CH 4 separation column is withdrawn liquid from the H 2 separation column.
- a methane-containing feed gas 1 which is predominantly composed of hydrogen and carbon monoxide and is present at a pressure between 30 and 60 bar (a)
- a methane-containing feed gas 1 which is predominantly composed of hydrogen and carbon monoxide and is present at a pressure between 30 and 60 bar (a)
- a two-phase mixture 2 is formed, which is separated in the separator D1 consisting largely of carbon monoxide and methane, hydrogen-containing liquid and a hydrogen-rich gas phase.
- the gas phase is withdrawn via line 3 from the separator D1 and after warming in the
- the liquid phase 5 is fed to the H 2 separation column T1.
- it is split into two partial streams, of which the first 6 is expanded as reflux to the top of the H 2 - separating column T1, while the second partial stream 7 after a
- the H 2 separation column T1 is operated at a pressure which is between one third and one half of the pressure of the feed gas 1 and serves to remove the hydrogen dissolved in the liquid phase 5. It is heated by a circulating heater 8, which is integrated in the heat exchanger E2.
- the hydrogen-rich overhead fraction 9 from the H 2 separation column T1 is after
- Carbon monoxide and methane existing bottoms fraction 1 1 is relaxed in the operated at a pressure between 8.5 and 9bar (a) CO / CH 4 separation column T2.
- the bottoms fraction 1 1 is split into two partial streams, one of which 12 serves as an intermediate reflux and the second 13, after evaporation in the heat exchanger E2, as an intermediate heater.
- the CO / CH 4 separation column T2 is a in the
- Heat exchanger E3 integrated circulating heater 14 heated.
- the peak cold needed for the process is obtained via a nitrogen cycle driven by the two-stage cycle compressor V.
- Nitrogen 15 leaves the second compressor stage C2 at a pressure typically between 16 and 16
- Heat exchanger E3 condensed against heated bottom product 14 of the C07CH 4 - separation column T2.
- the condensed nitrogen 16 is placed on a
- Mixture 17 is formed in the separator D2 in a gas 18 and a
- Liquid phase 19 is separated.
- a stream 21 formed from the gas phase 18 and a part 20 of the liquid phase 19 is completely evaporated at the intermediate pressure level in the heat exchanger E2 and further heated in the heat exchanger E1 before it is fed to the suction side of the second compressor stage C2.
- the remaining liquid phase 22 is further relaxed to low pressure level between 3 and 5bar (a), evaporated in the heat exchanger E2 and after warming in
- Recirculation compressor V returned.
- the division of the liquid phase 19 into the two partial streams 20 and 22 is carried out in such a way that the temperature required at the separator D1 is reached. If necessary, the closed nitrogen cycle through the low pressure passage
- gaseous nitrogen 23 is introduced on the warm side of the heat exchanger E1 and liquid nitrogen 24 on the cold side of the heat exchanger E2.
- Excess nitrogen 25 is discharged on the pressure side of the cycle compressor V.
- a low-methane gas phase 26 below the sixth practical separation stage is withdrawn from the H 2 separation column T1, cooled in the heat exchanger E 2 and condensed and then via line 27 to the head of CO / CH 4 separation column T2 out.
- the top product 28 of the CO / CH 4 separation column T2 has the purity required for a carbon monoxide product and is present at a pressure which is high enough to be able to release it as carbon monoxide product 29 after being heated in the heat exchangers E 2 and E 1 without further compression ,
- a methane-rich, carbon monoxide-containing liquid phase 30 collects is dispensed as fuel gas 31 after evaporation and heating in the heat exchangers E2 and E1.
- FIG. 2 makes it possible to produce the carbon monoxide product 29 with a higher purity than is possible with the configuration shown in FIG.
- a column T3 is used for the stripping of hydrogen from the liquid phase 5, which is divided in its lower part by a partition in two segments S1 and S2.
- a capacitor E4 is arranged, in which as a coolant part 32 of the carbon monoxide and methane sump fraction 1 1 is used.
- the warmed and vaporized coolant 33 is subsequently fed together with the partial flow 13 of the CO / CH 4 separation column T2 as an intermediate heater.
- segment S2 In order to avoid methane impurities in the liquid phase in segment S2, the liquid phase flowing out of the upper region of column T3 is fed to segment S1 alone. Below the condenser E4, therefore, a low-methane carbon monoxide fraction 34 can be withdrawn liquid from the segment S2, which serves as reflux at the top of the CO / CH 4 separation column T2.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015016771.5A DE102015016771A1 (de) | 2015-12-23 | 2015-12-23 | Verfahren und Vorrichtung zur kryogenen Zerlegung von Synthesegas |
| PCT/EP2016/025159 WO2017108197A1 (de) | 2015-12-23 | 2016-12-01 | Verfahren und vorrichtung zur kryogenen zerlegung von synthesegas |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3394535A1 true EP3394535A1 (de) | 2018-10-31 |
| EP3394535B1 EP3394535B1 (de) | 2025-10-01 |
| EP3394535C0 EP3394535C0 (de) | 2025-10-01 |
Family
ID=57542961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16809645.1A Active EP3394535B1 (de) | 2015-12-23 | 2016-12-01 | Verfahren und vorrichtung zur kryogenen zerlegung von synthesegas |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US11125496B2 (de) |
| EP (1) | EP3394535B1 (de) |
| CN (1) | CN108474615B (de) |
| CA (1) | CA3007027A1 (de) |
| DE (1) | DE102015016771A1 (de) |
| TW (1) | TWI723105B (de) |
| WO (1) | WO2017108197A1 (de) |
| ZA (1) | ZA201803444B (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112961712B (zh) * | 2021-02-08 | 2021-11-26 | 赛鼎工程有限公司 | 焦炉煤气深度净化制lng联产氢气的系统及方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4525187A (en) * | 1984-07-12 | 1985-06-25 | Air Products And Chemicals, Inc. | Dual dephlegmator process to separate and purify syngas mixtures |
| FR2718428B1 (fr) * | 1994-04-11 | 1997-10-10 | Air Liquide | Procédé et installation de production de monoxyde de carbone. |
| FR2718725B1 (fr) | 1994-04-13 | 1996-05-24 | Air Liquide | Procédé et installation de séparation d'un mélange gazeux. |
| US7107788B2 (en) * | 2003-03-07 | 2006-09-19 | Abb Lummus Global, Randall Gas Technologies | Residue recycle-high ethane recovery process |
| US8640495B2 (en) * | 2009-03-03 | 2014-02-04 | Ait Products and Chemicals, Inc. | Separation of carbon monoxide from gaseous mixtures containing carbon monoxide |
| DE102013013883A1 (de) * | 2013-08-20 | 2015-02-26 | Linde Aktiengesellschaft | Kombinierte Abtrennung von Schwer- und Leichtsiedern aus Erdgas |
| FR3011069B1 (fr) | 2013-09-24 | 2015-09-11 | Air Liquide | Procede et appareil de separation cryogenique d'un melange contenant au moins du monoxyde de carbone, de l'hydrogene et de l'azote |
| CN104293402B (zh) * | 2014-09-26 | 2017-02-15 | 成都赛普瑞兴科技有限公司 | 一种含氢气、一氧化碳的甲烷气分离提纯制液化天然气的方法 |
-
2015
- 2015-12-23 DE DE102015016771.5A patent/DE102015016771A1/de not_active Withdrawn
-
2016
- 2016-12-01 CA CA3007027A patent/CA3007027A1/en active Pending
- 2016-12-01 US US16/064,624 patent/US11125496B2/en active Active
- 2016-12-01 WO PCT/EP2016/025159 patent/WO2017108197A1/de not_active Ceased
- 2016-12-01 CN CN201680075925.XA patent/CN108474615B/zh active Active
- 2016-12-01 EP EP16809645.1A patent/EP3394535B1/de active Active
- 2016-12-22 TW TW105142628A patent/TWI723105B/zh active
-
2018
- 2018-05-24 ZA ZA2018/03444A patent/ZA201803444B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TWI723105B (zh) | 2021-04-01 |
| CN108474615A (zh) | 2018-08-31 |
| DE102015016771A1 (de) | 2017-06-29 |
| EP3394535B1 (de) | 2025-10-01 |
| WO2017108197A1 (de) | 2017-06-29 |
| TW201733965A (zh) | 2017-10-01 |
| CN108474615B (zh) | 2020-12-01 |
| US11125496B2 (en) | 2021-09-21 |
| CA3007027A1 (en) | 2017-06-29 |
| US20190056176A1 (en) | 2019-02-21 |
| EP3394535C0 (de) | 2025-10-01 |
| ZA201803444B (en) | 2019-03-27 |
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