CA2670356A1 - Method for separating sulphur out of a gas that contains sulphur - Google Patents
Method for separating sulphur out of a gas that contains sulphur Download PDFInfo
- Publication number
- CA2670356A1 CA2670356A1 CA002670356A CA2670356A CA2670356A1 CA 2670356 A1 CA2670356 A1 CA 2670356A1 CA 002670356 A CA002670356 A CA 002670356A CA 2670356 A CA2670356 A CA 2670356A CA 2670356 A1 CA2670356 A1 CA 2670356A1
- Authority
- CA
- Canada
- Prior art keywords
- sulphur
- gas
- separation process
- absorptive separation
- recited
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/16—Hydrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Gas Separation By Absorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Gases By Adsorption (AREA)
- Industrial Gases (AREA)
Abstract
A method is described for separating sulphur out of a sulphur-containing gas, particularly hydrogen or natural gas, wherein the gas is compressed and the sulphur is removed in an absorptive separation process.
According to the invention, the sulphur-containing gas (1) is compressed, or at least precompressed (V1) before being passed into the absorptive separation process (A).
According to the invention, the sulphur-containing gas (1) is compressed, or at least precompressed (V1) before being passed into the absorptive separation process (A).
Description
P08C063 = IC0075 30.04.2009 - Christoph Zahn/bg Description Method for separating sulphur out of a gas that contains sulphur The invention relates to a method for separating sulphur out of a gas that contains sulphur, particularly hydrogen or natural gas, wherein the gas is compressed and the sulphur is removed via an absorptive separation process.
Species-related methods for separating sulphur from a gas containing sulphur are used for example at natural gas filling stations. At natural gas filling stations, the natural gas for use as fuel is drawn from the existing natural gas supply network, dried, and compressed to a storage pressure that may reach 300 bar. The sulphur content in the natural gas that is drawn from the supply network is usually too high to be processed effectively with today's engine and exhaust gas cleaning technology. In particular, the catalytic converters needed for subsequent cleaning of the exhaust gas are damaged by the sulphur that is currently included in the natural gas, with the result that they cease to function properly before the end of their specified service lives.
Because of legal provisions regarding odorising natural gas when it is used as fuel -tetrahydrothiophene (THT) and/or mercaptan sulphur are added to the natural gas for this purpose - the sulphur content in natural gas must not fall below a prescribed fraction.
For natural gas processing on a large, industrial scale, selective sulphur absorption processes have been in use for some time. The absorber materials that are suitable for removing sulphur must usually be at an operating temperature from 40 to 80 C.
These temperatures are generally assured by explosion-proof electric heaters allocated to the absorbers.
The object of the present invention is to suggest a species-related method for separating sulphur out of a gas that contains sulphur, particularly hydrogen or natural gas, which avoids the problems described above and particularly enables use of an additional heating device for the absorptive separating process to be dispensed with.
P08C063 = IC0075 30.04.2009 - Christoph Zahn/bg To solve this object, a species-related method for separating sulphur out of a gas that contains sulphur is suggested that is characterized in that the sulphur-containing gas is compressed, or at least precompressed, before it is introduced into the absorptive separation process.
In this context, the sulphur-containing gas is preferably compressed before its introduction into the absorptive separation process to at least such a degree that the compression heat generated thereby enables the absorber material or materials used in the absorptive separation process to be heated to the requisite temperature. As a consequence, it is no longer necessary to use additional heating devices for the absorptive separation process.
Further advantageous configurations of the method according to the invention for separating sulphur out of a gas that contains sulphur, which represent the objects of the subordinate claims, are characterized in that - the sulphur-containing gas that is introduced into the absorptive separation process is at a temperature between 20 and 200 C, preferably between 40 and 100 C, - the gas that is extracted from the separation process undergoes postcompression, - at least a partial stream of the sulphur-containing gas is diverted around the absorptive separation process, the quantity of this partial stream preferably being variable, - the sulphur-containing gas that is introduced into the absorptive separation process is cooled after it has been (pre)compressed, - the absorptive separation process is designed such that besides sulphur at least one additional component is at least partially separated from the sulphur-containing gas, and P08C063 = IC0075 30.04.2009 - Christoph Zahn/bg - the gas from which sulphur has been removed is delivered to a vehicle for use as a power source and/or fuel.
In the following, the method according to the invention for separating sulphur out of a gas that contains sulphur as well as other configurations thereof will be explained in greater detail with reference to the embodiment shown in the figure. The embodiment shown in the figure may be used in particular at natural gas filling stations that are provided for the purpose of filling vehicles of any kind with compressed natural gas.
The figure illustrates an absorption process A for the selective removal of sulphur. A
gas that contains sulphur is introduced into this process via line segments 1, 2 and 3.
In the case of a natural gas filling station, this gas is natural gas drawn from the public natural gas supply network. The sulphur-containing gas is compressed by a single- or two-stage compressor or a single- or multistage compressor unit V1 such that the heat of compression generated by the process is sufficient to heat the absorber material or materials used in absorptive separation process A to the temperature required for the process. Additional heating devices for heating the absorber material or materials to the requisite temperature are not required.
In the case of a natural gas filling station, the natural gas containing the sulphur is compressed in the compressor or compressor unit V1 to a pressure between 10 and 30 bar, preferably between 15 and 25 bar.
Heat exchanger E, which may be provided optionally, is used to cool the natural gas that has been compressed, and thus also heated in the compressor or compressor unit V1, to an optimal temperature for the purposes of selectivity of the absorber material or materials used in downstream absorptive separation process A.
In practical terms, absorptive separation process A includes an absorption column preferably having a capacity of 50 I. Besides the absorption material that is used to selectively remove sulphur from the sulphur-containing gas, a drying material is preferably provided in absorption column A as well. In general, this drying material may be located upstream and/or downstream from the absorption material that is used to separate the sulphur.
P08C063 = IC0075 30.04.2009 - Christoph Zahn/bg Bypass line 5, represented by a dashed line, is preferably equipped with a control valve 6 and may be used for diverting a partial flow of the sulphur-containing (natural) gas around absorptive separation process A. In this way, it is possible to vary the quantity of gas that passes through absorptive separation process A. The degree of sulphur reduction in the gas that contains the sulphur may thus be regulated or varied according to requirements If it is necessary and/or desired, absorptive separation process A my be modified in such manner that other, preferably undesirable components besides sulphur are removed from the sulphur-containing gas as well.
With its sulphur content reduced to the desired lower limit, the cleaned gas then passes through line segments 4 and 7 to a second single- or multistage compressor or a second single- or multistage compressor unit V2, in either of which it may optionally be compressed to desired final pressure. The compressed gas is then forwarded through line 8 for subsequent use, for example intermediate storage.
It should be noted in particular that the method according to the invention for separating sulphur out of a gas that contains sulphur is able to be used for an extremely wide range of gases and gas mixtures in which at least some of the sulphur contained is to be removed by absorption.
Species-related methods for separating sulphur from a gas containing sulphur are used for example at natural gas filling stations. At natural gas filling stations, the natural gas for use as fuel is drawn from the existing natural gas supply network, dried, and compressed to a storage pressure that may reach 300 bar. The sulphur content in the natural gas that is drawn from the supply network is usually too high to be processed effectively with today's engine and exhaust gas cleaning technology. In particular, the catalytic converters needed for subsequent cleaning of the exhaust gas are damaged by the sulphur that is currently included in the natural gas, with the result that they cease to function properly before the end of their specified service lives.
Because of legal provisions regarding odorising natural gas when it is used as fuel -tetrahydrothiophene (THT) and/or mercaptan sulphur are added to the natural gas for this purpose - the sulphur content in natural gas must not fall below a prescribed fraction.
For natural gas processing on a large, industrial scale, selective sulphur absorption processes have been in use for some time. The absorber materials that are suitable for removing sulphur must usually be at an operating temperature from 40 to 80 C.
These temperatures are generally assured by explosion-proof electric heaters allocated to the absorbers.
The object of the present invention is to suggest a species-related method for separating sulphur out of a gas that contains sulphur, particularly hydrogen or natural gas, which avoids the problems described above and particularly enables use of an additional heating device for the absorptive separating process to be dispensed with.
P08C063 = IC0075 30.04.2009 - Christoph Zahn/bg To solve this object, a species-related method for separating sulphur out of a gas that contains sulphur is suggested that is characterized in that the sulphur-containing gas is compressed, or at least precompressed, before it is introduced into the absorptive separation process.
In this context, the sulphur-containing gas is preferably compressed before its introduction into the absorptive separation process to at least such a degree that the compression heat generated thereby enables the absorber material or materials used in the absorptive separation process to be heated to the requisite temperature. As a consequence, it is no longer necessary to use additional heating devices for the absorptive separation process.
Further advantageous configurations of the method according to the invention for separating sulphur out of a gas that contains sulphur, which represent the objects of the subordinate claims, are characterized in that - the sulphur-containing gas that is introduced into the absorptive separation process is at a temperature between 20 and 200 C, preferably between 40 and 100 C, - the gas that is extracted from the separation process undergoes postcompression, - at least a partial stream of the sulphur-containing gas is diverted around the absorptive separation process, the quantity of this partial stream preferably being variable, - the sulphur-containing gas that is introduced into the absorptive separation process is cooled after it has been (pre)compressed, - the absorptive separation process is designed such that besides sulphur at least one additional component is at least partially separated from the sulphur-containing gas, and P08C063 = IC0075 30.04.2009 - Christoph Zahn/bg - the gas from which sulphur has been removed is delivered to a vehicle for use as a power source and/or fuel.
In the following, the method according to the invention for separating sulphur out of a gas that contains sulphur as well as other configurations thereof will be explained in greater detail with reference to the embodiment shown in the figure. The embodiment shown in the figure may be used in particular at natural gas filling stations that are provided for the purpose of filling vehicles of any kind with compressed natural gas.
The figure illustrates an absorption process A for the selective removal of sulphur. A
gas that contains sulphur is introduced into this process via line segments 1, 2 and 3.
In the case of a natural gas filling station, this gas is natural gas drawn from the public natural gas supply network. The sulphur-containing gas is compressed by a single- or two-stage compressor or a single- or multistage compressor unit V1 such that the heat of compression generated by the process is sufficient to heat the absorber material or materials used in absorptive separation process A to the temperature required for the process. Additional heating devices for heating the absorber material or materials to the requisite temperature are not required.
In the case of a natural gas filling station, the natural gas containing the sulphur is compressed in the compressor or compressor unit V1 to a pressure between 10 and 30 bar, preferably between 15 and 25 bar.
Heat exchanger E, which may be provided optionally, is used to cool the natural gas that has been compressed, and thus also heated in the compressor or compressor unit V1, to an optimal temperature for the purposes of selectivity of the absorber material or materials used in downstream absorptive separation process A.
In practical terms, absorptive separation process A includes an absorption column preferably having a capacity of 50 I. Besides the absorption material that is used to selectively remove sulphur from the sulphur-containing gas, a drying material is preferably provided in absorption column A as well. In general, this drying material may be located upstream and/or downstream from the absorption material that is used to separate the sulphur.
P08C063 = IC0075 30.04.2009 - Christoph Zahn/bg Bypass line 5, represented by a dashed line, is preferably equipped with a control valve 6 and may be used for diverting a partial flow of the sulphur-containing (natural) gas around absorptive separation process A. In this way, it is possible to vary the quantity of gas that passes through absorptive separation process A. The degree of sulphur reduction in the gas that contains the sulphur may thus be regulated or varied according to requirements If it is necessary and/or desired, absorptive separation process A my be modified in such manner that other, preferably undesirable components besides sulphur are removed from the sulphur-containing gas as well.
With its sulphur content reduced to the desired lower limit, the cleaned gas then passes through line segments 4 and 7 to a second single- or multistage compressor or a second single- or multistage compressor unit V2, in either of which it may optionally be compressed to desired final pressure. The compressed gas is then forwarded through line 8 for subsequent use, for example intermediate storage.
It should be noted in particular that the method according to the invention for separating sulphur out of a gas that contains sulphur is able to be used for an extremely wide range of gases and gas mixtures in which at least some of the sulphur contained is to be removed by absorption.
Claims (8)
1. A method for separating sulphur out of a gas that contains sulphur, particularly hydrogen or natural gas, wherein the gas is compressed and the sulphur is removed via an absorptive separation process, characterized in that the sulphur-containing gas (1) is compressed, or at least precompressed (V1) before it is introduced into the absorptive separation process (A).
2. The method as recited in claim 1, characterized in that the sulphur-containing gas (1) is compressed before its introduction into the absorptive separation process (A) to at least such a degree that the compression heat generated thereby enables the absorber material or materials used in the absorptive separation process (A) to be heated to the requisite temperature.
3. The method as recited in claims 1 or 2, characterized in that the sulphur-containing gas (3) that is introduced into the absorptive separation process (A) is at a temperature between 20 and 200°C, preferably between 40 and 100°C.
4. The method as recited in any of the preceding claims 1 to 3, characterized in that the gas (4) that is extracted from the absorptive separation process (A) undergoes postcompression (V2).
5. The method as recited in any of the preceding claims 1 to 4, characterized in that at least a partial stream (5) of the sulphur-containing gas (1) is diverted around the absorptive separation process (A), the quantity of this partial stream preferably being variable (6).
6. The method as recited in any of the preceding claims 1 to 5, characterized in that the sulphur-containing gas (3) that is introduced into the absorptive separation process (A) is cooled after it has been (pre)compressed (E).
7. The method as recited in any of the preceding claims 1 to 6, characterized in that the absorptive separation process (A) is designed such that besides sulphur at least one additional component is at least partially separated from the sulphur-containing gas.
8. The method as recited in any of the preceding claims 1 to 7, characterized in that the gas (4, 7, 8) from which sulphur has been removed is delivered to a vehicle for use as a power source and/or fuel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008031509.5 | 2008-07-03 | ||
| DE102008031509A DE102008031509A1 (en) | 2008-07-03 | 2008-07-03 | Process for separating sulfur from a sulfur-containing gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2670356A1 true CA2670356A1 (en) | 2010-01-03 |
Family
ID=41128269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002670356A Abandoned CA2670356A1 (en) | 2008-07-03 | 2009-06-29 | Method for separating sulphur out of a gas that contains sulphur |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20100000154A1 (en) |
| EP (1) | EP2140925A1 (en) |
| JP (1) | JP2010012464A (en) |
| KR (1) | KR20100004864A (en) |
| CN (1) | CN101618290A (en) |
| AR (1) | AR072676A1 (en) |
| BR (1) | BRPI0901989A2 (en) |
| CA (1) | CA2670356A1 (en) |
| DE (1) | DE102008031509A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8518356B2 (en) | 2010-07-27 | 2013-08-27 | Air Products And Chemicals, Inc. | Method and apparatus for adjustably treating a sour gas |
| DE102010050435A1 (en) * | 2010-11-04 | 2012-05-10 | Linde Aktiengesellschaft | Process and device for decomposing gas mixtures |
| KR20190021497A (en) * | 2012-07-24 | 2019-03-05 | 누베라 퓨엘 셀스, 엘엘씨 | Distributed hydrogen extraction system |
| CN114046188B (en) * | 2021-12-01 | 2023-06-06 | 重庆科技学院 | Closed natural gas pipeline power generation and filtering device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2490283A (en) * | 1947-02-03 | 1949-12-06 | Shell Dev | Addition of carbonmonoxide-hydrogen to unsaturated compounds |
| US4589896A (en) * | 1985-01-28 | 1986-05-20 | Air Products And Chemicals, Inc. | Process for separating CO2 and H2 S from hydrocarbons |
| US5256172A (en) * | 1992-04-17 | 1993-10-26 | Keefer Bowie | Thermally coupled pressure swing adsorption |
| US5681360A (en) * | 1995-01-11 | 1997-10-28 | Acrion Technologies, Inc. | Landfill gas recovery |
| WO2004058384A1 (en) | 2002-12-17 | 2004-07-15 | Fluor Corporation | Configurations and methods for acid gas and contaminant removal with near zero emission |
| DE10356276A1 (en) * | 2003-11-28 | 2005-06-30 | Tentscher, Wolfgang, Dr. | Method for recovery of carbon dioxide from biogas comprises compressing biogas and treating product with regenerated absorption stream so that carbon dioxide and trace materials are removed to enrich absorption stream |
| US20050287056A1 (en) * | 2004-06-29 | 2005-12-29 | Dakota Gasification Company | Removal of methyl mercaptan from gas streams |
| DE102005013276A1 (en) * | 2005-02-11 | 2006-08-24 | Linde Ag | Process and apparatus for purifying gas streams |
| EP1871511A4 (en) * | 2005-04-20 | 2011-05-04 | Fluor Tech Corp | Configurations and methods for claus plant operation with variable sulfur content |
| US7699914B1 (en) * | 2005-12-09 | 2010-04-20 | Morrow Luke N | Triple-effect absorption system for recovering methane gas |
-
2008
- 2008-07-03 DE DE102008031509A patent/DE102008031509A1/en not_active Withdrawn
-
2009
- 2009-04-30 EP EP09006027A patent/EP2140925A1/en not_active Ceased
- 2009-06-03 CN CN200910146611A patent/CN101618290A/en active Pending
- 2009-06-08 US US12/480,217 patent/US20100000154A1/en not_active Abandoned
- 2009-06-26 KR KR1020090057791A patent/KR20100004864A/en not_active Application Discontinuation
- 2009-06-29 CA CA002670356A patent/CA2670356A1/en not_active Abandoned
- 2009-06-30 BR BRPI0901989-8A patent/BRPI0901989A2/en not_active IP Right Cessation
- 2009-07-01 AR ARP090102466A patent/AR072676A1/en not_active Application Discontinuation
- 2009-07-03 JP JP2009158399A patent/JP2010012464A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN101618290A (en) | 2010-01-06 |
| US20100000154A1 (en) | 2010-01-07 |
| AR072676A1 (en) | 2010-09-15 |
| JP2010012464A (en) | 2010-01-21 |
| KR20100004864A (en) | 2010-01-13 |
| BRPI0901989A2 (en) | 2010-05-18 |
| EP2140925A1 (en) | 2010-01-06 |
| DE102008031509A1 (en) | 2010-01-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20140702 |