GB2572409A - Methods and systems of upgrading syngas via CO² recovery - Google Patents
Methods and systems of upgrading syngas via CO² recovery Download PDFInfo
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- GB2572409A GB2572409A GB1805177.1A GB201805177A GB2572409A GB 2572409 A GB2572409 A GB 2572409A GB 201805177 A GB201805177 A GB 201805177A GB 2572409 A GB2572409 A GB 2572409A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
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- 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
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
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- 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
- B01D53/1456—Removing acid components
- B01D53/1475—Removing carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/005—Carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K3/00—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide
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- 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
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/104—Carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0238—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a carbon dioxide reforming step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/0475—Composition of the impurity the impurity being carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0946—Waste, e.g. MSW, tires, glass, tar sand, peat, paper, lignite, oil shale
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1612—CO2-separation and sequestration, i.e. long time storage
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1693—Integration of gasification processes with another plant or parts within the plant with storage facilities for intermediate, feed and/or product
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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
An apparatus and method of upgrading/purifying syngas (CO and H2), comprising the step of; removing carbon dioxide (CO2) from input syngas to produce output syngas at a variable output flowrate, and using a buffer element before delivery of the output syngas to an end user in order to minimise variation in the output flowrate. The input syngas may be produced from biomass. Optionally, 85%-99.99% of CO2 is removed from the input gas. The apparatus comprises; i) a gas scrubber for removing CO2; ii) a buffer element for storing the output syngas. The buffer element may be a tank, vessel or balloon for storing the purified syngas. Second and third aspects are directed towards a method and system for producing syngas respectively. A fourth aspect is directed towards a method of delivering a consistent and/or high-quality syngas from a variable and/or low-quality input fuel using a method according to the first aspect.
Description
Embodiments of the present invention generally relate to methods and systems of producing an upgraded syngas of higher and more consistent quality than the input syngas produced as a result of the thermal or combustion processing (pyrolysis, gasification, combustion) of low quality, low consistency feedstock / fuel.
Background
Current practice in waste management involves recovering the energy value in refuse derived fuel (RDF) as required by the waste framework directive (WFD) and the renewable energy directive (RED). In this situation a plant usually charges a fee to take the highly variable RDF. RDF is the result of solid waste produced by the public and commercial I industrial organisations once the valuable components of the waste have been recycled. RDF varies by location and on a daily, seasonal, annual and long-term basis in response to trends in economic activity etc.
The RDF undergoes gasification and then combustion at close coupled gasification or energy from waste I waste to energy plants. The resultant hot gases are passed through a boiler to raise steam and subsequently generate power via a steam rankine cycle.
These plants must operate in a manner which prioritises the plants ability to deal with the RDF variation because the thermal or combustion processing (pyrolysis, gasification, combustion) of low quality, inconsistency feedstock I fuel generally results in a syngas which is a function of the input feedstock I fuel quality and consistency it was derived from.
It is to these problems, amongst others, that embodiments according to the invention attempt to offer a solution.
Summary
Embodiments of the present invention relate to:
• primarily a method of upgrading syngas derived from a low quality feedstock / fuel; and • secondly a method of delivering a more consistent syngas from a variable feedstock I fuel (renewable or non-renewable) such as RDF.
In an independent aspect, there is provided a method according to claim 1.
Maximal CO2 removal (also known as ‘scrubbing’) may be achieved via various known technologies, either concurrently, previously or subsequently to other contaminants. The provision of a buffering mechanism (e.g. to temporarily store the upgraded output syngas) for temporarily storing the syngas before delivery to the ned user advantageously minimises the variation in upgraded syngas output flowrate. The buffer element may be a vessel, tank or balloon for example.
Typically syngas gas cleaning techniques do not target CO2 removal specifically however some CO2 will be removed (0% - 10%) because contaminants such as hydrogen sulfide (H2S), ammonia (NH3), hydrogen chloride (HCI) and tars are targeted and CO2 is removed due to the similar chemistry of the contaminant gas hydrogen sulfide and CO2 (https://www.netl.doe.gov/research/coal/energysystems/gasification/gasifipedia/agr). In contrast, methods according to the invention aim for maximal CO2 removal (85% - 99.99%) and, as a secondary consequence, remove some of the trace amounts of hydrogen sulfide present.
As a result of the maximum removal of CO2, it becomes possible to meet the fuel specification for higher efficiency prime movers (gas engines, gas turbines, fuel cells) instead of the steam rankine cycle where the efficiency is in the range of 5% - 23%
The input syngas may be produced as a result of the thermal or combustion processing (pyrolysis, gasification, combustion) of low quality, low consistency feedstock/fuel. For example, the syngas may be produced from heating, e.g. in a gasifier, an input fuel such as biomass, feedstock or RDF.
Preferably, the variation in the calorific value of the resulting syngas is less than the variation of the calorific value of the input fuel.
Further aspects of the invention are defined in the claims.
Embodiments of the present invention make it possible to use a low-quality feedstock, generate a low-quality syngas and significantly and consistently upgrade it to a higher specification.
Definitions
The following definitions have been provided as a reference to provide clarity:
• A consistent fuel is defined as a fuel which has a consistent calorific value (calories), consistent physical and chemical properties, and a consistent level of contaminants (moisture, ash, halogens, sulfur, nitrogen, alkali and alkali earth metals, transition metals). For example diesel, petrol, coal, fuel oil, natural gas.
• A high-quality fuel is defined as a fuel which has a high calorific value, consistent physical and chemical properties, and a low level of contaminants. For examples see list of example consistent fuels.
• Upgrading syngas refers to a process of increasing I maximising the concentration of useful components (Carbon monoxide and hydrogen gases) in syngas derived from combustion (thermal) processes (pyrolysis, gasification, combustion).
This is similar to the concept for upgrading biogas generated from anaerobic digestion to biomethane, the removal of carbon dioxide and trace contaminants such as hydrogen sulfide (https://www.infothekbiomasse.ch/images/175_2009_IEA_Biogas_upgrading_technologies. pdf).
• Consistent syngas refers to syngas which has consistent calorific value (calories), consistent physical and chemical properties, and a consistent level of contaminants (moisture, ash, halogens, sulfur, nitrogen, alkali and alkali earth metals, transition metals). This matches the definition for consistent fuel above because syngas can be considered a type of gaseous fuel.
• Consistent refers to acting or done in the same way over time, especially so as to be fair or accurate.
• An inconsistent or variable fuel is any fuel which does not meet the criteria set out by the consistent fuel definition, and • A low quality fuel is any fuel which does not meet the criteria of a high quality fuel. Examples of inconsistent and low quality fuels include waste or refuse derived fuels, municipal solid waste, biomass, solid renewable fuels, heterogenous fuels, mixtures of fuels, low calorific value fuels, and contaminated fuels, waste liquid fuels, waste gas fuels, pyrolysis and waste tyres.
• Maximal - tending towards the maximum, limited only by practical and / or operational limitations
At least the following benefits are envisaged:
• Improving the process design’s tolerance to variation in fuel quality, therefore reducing supply chain risks;
• Reducing the minimum calorific value of the fuel any given design can accept increasing the scope of acceptable fuels;
• Enabling the CO2 to be used so as to reduce internal costs such as those for inert gas, displacing nitrogen and thus reducing operating costs;
• Enabling the CO2 to be sold as a separate product and thus improving revenues;
• Enabling the plant to be carbon capture ready and further improving its carbon emissions performance;
• Enabling the CO2 to be used as an inert heat transfer medium (heat recovery and distribution) increasing process efficiency.
Brief Description of the Figures
Embodiments of the invention will be described with reference to the Figures, in which:
Figure 1 shows a method according to the prior art;
Figure 2 shows a method according to the invention.
Detailed Description
Figure 1 shows a prior art process for gasification of a low quality and inconsistent input fuel. At step 10, fuel, air and steam are used in a gasification process. The input fuel includes biogenicor fossil fuel derived matter.
The fuel undergoes gasification (at step 10) and then combustion (together, often referred to as “close coupled gasification”). “Gasification” typically refers to processes that thermally convert organic or fossil fuel matter into carbon monoxide, hydrogen, carbon dioxide(CO2) and trace compounds such as acid gases (HCL, H2S), as well as intermediate compounds (tars). Gasification is achieved by heating and reacting the feedstock I fuel at high temperatures (typically greater than 700 C), with a limited amount of air, oxygen and/or steam.
The resulting gas mixture following gasification 10 is a dirty syngas which is then refined, at step 20, through cleaning or “gas scrubbing” process into ’’syngas” (from synthesis gas) 30 to be delivered to the end user. Syngas and similar gas mixtures are proven as a fuel for engines, gas turbines and / or a feedstock for petrochemical manufacturing processes such as plastics production.
It is known that syngas gas cleaning techniques do not target CO2 removal specifically, although it is appreciated that some CO2 will be removed (0% - 10%) because contaminants such as hydrogen sulfide (H2S), ammonia (NH3), hydrogen chloride (HCI) and tars are targeted, and CO2 is removed due to the similar chemistry of the contaminant gas hydrogen sulfide and CO2.
Figure 2 shows a method according to the invention. In contrast to known methods, methods according to the invention target maximal CO2 removal (at step 25), of the CO2 being removed. As a secondary consequence, some of the trace amounts of hydrogen sulfide present in the syngas are also removed.
For example, the maximal removal of CO2 from syngas at step 25 can be implemented using a number of methods known in the oil and gas sector for natural gas (methane) cleaning to remove acid gases and for carbon capture of CO2 from coal or natural gases fired power station flue gases.
The maximal removal of CO2 results in an upgraded and more consistent syngas however the flowrate of the upgraded syngas will vary because the volume of CO2 removed will be inconsistent in a manner related to the inconsistency of the fuel. A buffer mechanism (e.g. a tank, vessel, balloon) could be provided to mitigate the flowrate variation before delivering the syngas 35 to the end user. If provided, the buffer element may be a tank, vessel or balloon for example.
This method involves the maximal removal of CO2 because it has the greatest impact on the quality and consistency of the syngas because it is a bulk constituent of the syngas prior to being upgraded, other contaminants are only present in trace concentrations (https://www.netl.doe.gov/research/coal/energysystems/gasification/gasifipedia/agr).
As a result of the removal of CO2 it becomes possible to meet the fuel specification for higher efficiency prime movers (gas engines, gas turbines, fuel cells) instead of the steam rankine cycle which is limited to a peak efficiency of 5% - 23%. (http://www.tolvik.com/wp~ content/uploads/2014 UK EfW Sector 2014 Preliminary.pdf )
There are typically standards which very tightly define the specification of these fuels because these specifications are used to design engines (cars) which are highly optimised. For example, a petrol car cannot safely operate using diesel fuel (https://www.transportpolicy.net/standard/eu-fuels-diesel-and-gasoline/#technicalstandards: https://www.ipu.co.uk/en590/).
It is known that a large number of existing technologies which can be adapted to include methods according to embodiments of the invention. These technologies and categories of technology may include:
• liquid chemical absorption;
• physical adsorption;
• alkaline scrubbing • solid sorbents;
• liquids solvent scrubbing;
· molecular sieves;
• Iron chealates;
• vanadium semi-soluble salts;
• iron chelates;
• biological methods;
· amine cycles with several different solvants;
• regenerative absorption;
• precipitation;
• pressure swing absorption; and • osmosis.
Claims (12)
1. A method of upgrading an input syngas, the method comprising the steps of:
removing carbon dioxide, CO2, from the input syngas to produce output syngas at a variable output flowrate,
2. Use of a buffer element before delivery of the output syngas to an end user (pre or post CO2 removal), to minimise the variation in the output flowrate to the end user.
3. A method according to claim 1, wherein removing the CO2 comprises maximising the amount of CO2 removed from the input gas.
4. A method according to claim 1 or claim 2, wherein the input syngas is produced from input fuel comprising biomass or sustainable feedstock.
5. A method according to any one of the preceding claims, wherein the input syngas is produced from input fuel comprising waste or refuse derived fuel.
6. A method according to any one of the preceding claims, wherein the step of removing CO2 comprises simultaneously removing any trace hydrogen sulfide from the input syngas.
7. A method according to any one of the preceding claims, wherein a maximal amount of CO2, preferably 85% - 100% of CO2 is removed from the input gas.
8. A system method for upgrading an input syngas, the system comprising:
a gas scrubber for removing carbon dioxide, CO2, from the input syngas to produce output syngas at a variable output flowrate; and a buffer element for storing the output syngas before delivery of the output syngas to an end user, to minimise the variation in the output flowrate to the end user.
9. A method of producing a syngas, the method comprising the steps of: heating, in a gasifier, input fuel comprising renewable fuel of variable calorific value, and producing producer gas; and scrubbing the producer gas to remove carbon dioxide and minimise carbon dioxide in the resulting syngas.
10. A system for producing a syngas, the system comprising:
a gasifier for receiving input fuel comprising renewable fuel of variable calorific value and for producing a producer gas; and a gas scrubber for removing carbon dioxide from the producer gas to thereby minimise carbon dioxide in the resulting syngas.
11. A method of delivering a consistent and/or high-quality syngas from a variable and or/low quality input fuel, using a method or system according to any one of the preceding claims.
12. A method according to claim 10, wherein the consistent syngas is suitable for gas engines, gas turbines, or fuel cells.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1805177.1A GB2572409A (en) | 2018-03-29 | 2018-03-29 | Methods and systems of upgrading syngas via CO² recovery |
| PCT/GB2019/050864 WO2019186145A1 (en) | 2018-03-29 | 2019-03-27 | Method of producing a syngas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1805177.1A GB2572409A (en) | 2018-03-29 | 2018-03-29 | Methods and systems of upgrading syngas via CO² recovery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201805177D0 GB201805177D0 (en) | 2018-05-16 |
| GB2572409A true GB2572409A (en) | 2019-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| GB1805177.1A Withdrawn GB2572409A (en) | 2018-03-29 | 2018-03-29 | Methods and systems of upgrading syngas via CO² recovery |
Country Status (2)
| Country | Link |
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| GB (1) | GB2572409A (en) |
| WO (1) | WO2019186145A1 (en) |
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| EP2865732A1 (en) * | 2012-06-26 | 2015-04-29 | Wuhan Kaidi Engineering Technology Research Institute Co., Ltd. | Method for preparing liquid hydrocarbon product from biomass-produced synthetic gas |
| US20160024401A1 (en) * | 2014-07-28 | 2016-01-28 | Fluor Technologies Corporation | Configurations and method of integrating a gas to liquids (gtl) plant in a refinery |
| WO2016090357A1 (en) * | 2014-12-05 | 2016-06-09 | Carbon Capture Scientific, Llc | A process for separating a product gas from gaseous mixture |
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| US20050095183A1 (en) * | 2003-11-05 | 2005-05-05 | Biomass Energy Solutions, Inc. | Process and apparatus for biomass gasification |
| BRPI0721012A2 (en) * | 2006-12-22 | 2014-07-29 | En Afina Inc | METHOD FOR LOW SEVERITY GASIFICATION OF HEAVY OIL WASTE. |
| US20170009160A1 (en) * | 2015-07-07 | 2017-01-12 | Kashong Llc | System for gasification of solid waste and method of operation |
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| WO2009065841A1 (en) * | 2007-11-20 | 2009-05-28 | Shell Internationale Research Maatschappij B.V. | Process for producing a purified synthesis gas stream |
| US20110113676A1 (en) * | 2009-09-04 | 2011-05-19 | Mackay Ian S | Production of distillate fuels from an integrated municipal solid waste/triglyceride conversion process |
| WO2012093264A1 (en) * | 2011-01-07 | 2012-07-12 | Advanced Plasma Power Limited | Gas stream production |
| EP2564918A1 (en) * | 2011-08-31 | 2013-03-06 | Neste Oil Oyj | A two-stage gas washing method applying sulfide precipitation and alkaline absorption |
| US20130310469A1 (en) * | 2012-05-17 | 2013-11-21 | Fluor Technologies Corporation | Production of higher alcohols with minimum methanol content from the gasification of carbonaceous materials |
| EP2865732A1 (en) * | 2012-06-26 | 2015-04-29 | Wuhan Kaidi Engineering Technology Research Institute Co., Ltd. | Method for preparing liquid hydrocarbon product from biomass-produced synthetic gas |
| WO2014087048A1 (en) * | 2012-12-04 | 2014-06-12 | Vapo Oy | Method for reducing the carbon footprint of fuel produced in a btl plant |
| WO2015011503A1 (en) * | 2013-07-26 | 2015-01-29 | Advanced Plasma Power Limited | Process for producing a substitute natural gas |
| US20160024401A1 (en) * | 2014-07-28 | 2016-01-28 | Fluor Technologies Corporation | Configurations and method of integrating a gas to liquids (gtl) plant in a refinery |
| WO2016090357A1 (en) * | 2014-12-05 | 2016-06-09 | Carbon Capture Scientific, Llc | A process for separating a product gas from gaseous mixture |
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| GB201805177D0 (en) | 2018-05-16 |
| WO2019186145A1 (en) | 2019-10-03 |
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