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WO2018189027A1 - Processus d'élimination de composés d'organosilicium complètement ou partiellement hydrolysés à partir de gaz de combustion en amont d'une unité de commande d'émissions catalytique - Google Patents

Processus d'élimination de composés d'organosilicium complètement ou partiellement hydrolysés à partir de gaz de combustion en amont d'une unité de commande d'émissions catalytique Download PDF

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Publication number
WO2018189027A1
WO2018189027A1 PCT/EP2018/058730 EP2018058730W WO2018189027A1 WO 2018189027 A1 WO2018189027 A1 WO 2018189027A1 EP 2018058730 W EP2018058730 W EP 2018058730W WO 2018189027 A1 WO2018189027 A1 WO 2018189027A1
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process according
gas
scr
catalytic
catalyst
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Ceased
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PCT/EP2018/058730
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English (en)
Inventor
Niklas Bengt Jakobsson
Kresten Egeblad
Francesco Castellino
Troels Dahlgaard Stummann
Thomas Nathan WHITE
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Topsoe AS
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Haldor Topsoe AS
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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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/103—Oxidation catalysts for HC and CO only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/104—Alumina
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/25—Coated, impregnated or composite adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/34—Specific shapes
    • B01D2253/342—Monoliths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/55—Compounds of silicon, phosphorus, germanium or arsenic
    • B01D2257/553—Compounds comprising hydrogen, e.g. silanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/10—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for stationary applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a novel process for the removal of fully or partly hydrolyzed organosilicon com ⁇ pounds from flue gases by absorption in an absorption unit installed upstream of a catalytic emissions control unit or integrated therewith.
  • the invention is focused on the im ⁇ portance of removing any siloxanes, silazanes and silanols, i.e. fully or partly hydrolyzed silicon-containing organic compounds, from the flue gas resulting from power genera-
  • CatOX refers to catalytic oxida ⁇ tion.
  • SCR is recognized world-wide as the most effective NOx con ⁇ trol technology for boilers, engines and combustion tur ⁇ bines when a substantial NOx reduction of 50 to 95 ⁇ 6 is re quired.
  • the tech ⁇ nology has even provided some utilities with the capability to achieve lower heat rates by allowing optimization of burner operation and reduction or omission of flue gas re- circulation, further adding to its cost effectiveness.
  • the NO and NO 2 molecules are reduced over a catalyst into molecular nitrogen and water vapor by reaction with a reductant pre-mixed into the flue gas.
  • the reductant is typically a nitrogen-based reagent, such as ammonia or urea, injected into the duct ⁇ work, downstream of the combustion unit.
  • the waste gas mixes with the reagent and enters a catalyst-containing re ⁇ actor.
  • the hot flue gas and reagent diffuse through the catalyst.
  • the reagent reacts selectively with the NOx within a specific temperature range and in the presence of the catalyst and oxygen.
  • SCR The technology of SCR has been applied to a wide variety of industrial applications for decades.
  • flue gases gen ⁇ erated from refinery off-gas combustion to natural gas, oil or coal fired units have been treated using SCR.
  • More re ⁇ cent SCR applications include reduction of NOx emissions generated from boilers or diesel engines, as well as pro- cess gas streams in e.g. nitric acid plants, in calcining ovens and in gas turbines fired by landfill and/or digester gas .
  • SCR based systems for NOx removal may include one or more layers of an oxidation catalyst, which also makes it possi ⁇ ble to efficiently remove CO and a significant portion of any un-burned hydrocarbons.
  • CatOx installed downstream of the SCR is also useful in minimizing any ammonia slip.
  • NOx SCR systems employ deNOx and CatOx catalysts based on e.g. a porous ceramic fiber support reinforced with T1O 2 and ho ⁇ mogeneously impregnated with the active components WO 3 and V 2 0 5 , respectively.
  • Siloxanes are organosilicon compounds comprising silicon, carbon, hydrogen and oxygen which have Si-O-Si bonds.
  • Si ⁇ loxanes can be linear as well as cyclic. They may be pre ⁇ sent in landfill gas and biogas because they, or their pre- cursors, are used in various beauty products, such as e.g. cosmetics and shampoos that are washed down drains or oth ⁇ erwise disposed of, so that they end up in municipal wastewater and landfills.
  • Siloxanes are not completely bro ⁇ ken down during anaerobic digestion, and as a result, waste gas captured from treatment plants and landfills is often heavily contaminated with these compounds.
  • a silazane is any hydride of silicon and nitrogen having a straight or branched chain of silicon and nitrogen atoms joined by covalent bonds.
  • the word is also used for any organic derivative of such compounds. They are analogous to siloxanes, with -NH- replacing -0- . Their in ⁇ dividual name is dependent on the number of silicon atoms in the chemical structure. Hexamethyldisilazane, for exam- pie, contains two silicon atoms bonded to the nitrogen atom. The majority of silazanes are moisture sensitive. It is known that siloxanes can be removed by using non-re ⁇ generative packed bed adsorption with activated carbon or porous silica as sorbent. Regenerative sorbents can also be used as well as units based on gas cooling to very low tem- peratures to precipitate the siloxanes out from the gas.
  • liquid extraction technologies are used. In addi ⁇ tion, these technologies can be used in various combina ⁇ tions .
  • a major issue in the utilization of raw gas from landfills and anaerobic digesters is to provide a gas stream with a low sulfur content, i.e. less than a few hundred ppm, and with a negligible content of siloxanes.
  • si ⁇ loxanes give rise to problems because they are converted to S1O 2 during combustion, leading to build-up of abrasive solid deposits inside the engine and causing damage, re ⁇ claimed service time and increased maintenance requirements for many components.
  • any catalysts installed to con ⁇ trol exhaust gas emissions are sensitive to siloxanes en ⁇ trained in the gas stream, in fact even more so than the engine itself.
  • the silox- ane tolerance is way below 250 ppb, and it can even be as low as 5 ppb.
  • adsorbents such as activated carbon, silica or alumina, can be used to remove siloxanes present in the gas.
  • the siloxane removal by adsorbents has been carried out only as a pre-treatment step before the power generator.
  • These ad- sorbents can be used as scavengers, or they can be used in a regenerative process configuration using temperature swing adsorption.
  • WO 2008/024329 Al discloses a system comprising an adsorbent bed for removing siloxanes from biogas down to a very low siloxane level, so that the cleaned biogas can be used as intake air for equipment, such as combustion engines or gas turbines.
  • the adsorbent bed comprises at least two of activated carbon, silica gel and a molecular sieve.
  • the present invention relates to the thorough removal of siloxanes from an engine flue gas before it reaches the deNOx system. This is done by passing the hot flue gas through a monolithic siloxane removal unit, i.e. a monolith coated with a material capable of absorbing siloxanes.
  • a monolithic siloxane removal unit i.e. a monolith coated with a material capable of absorbing siloxanes.
  • the siloxane sorbent material is dispersed on a mono ⁇ lithic support, the siloxane removal unit being located up- stream the deNox unit.
  • a carbon monoxide oxidation catalyst can be used to remove carbon monoxide from the flue gas, either upstream or downstream from the SCR catalyst.
  • the temperature of the flue gas this is between around 200 °C and a temperature slightly above the actual engine exhaust temperature. As long as there are OH groups present on the surface of the sorbent, any adsorbed silox ⁇ ane will react and form a glass.
  • the invention concerns a process for the removal of fully or partly hydrolyzed organosilicon com ⁇ pounds including, but not limited to siloxanes, silazanes and silanols from a hot flue gas upstream of a catalytic emissions control system, wherein
  • the flue gas is passed through a siloxane removal unit containing a siloxane sorbent material dispersed on a mono ⁇ lithic support, said material having surface hydroxyl groups over the relevant temperature range, and
  • the siloxane removal unit is located upstream any emis- sions control catalyst unit, such as a deNOx unit, in which selective catalytic reduction (SCR) is performed, in a po ⁇ sition where the gas has a temperature in the range from 200 to 800°C.
  • the gas has a temperature in the range from 200 to 600°C, most preferred from 250 to 450°C.
  • siloxane sorbent material and “siloxane removal unit” as used herein are intended to cover not only silox- anes, but also silazanes, silanols and other fully or part ⁇ ly hydrolyzed organosilicon compounds.
  • the catalytic emissions control system includes either or both of
  • the sorbent material preferably has a surface area higher than 50 m 2 /g.
  • siloxane removal material which is dispersed on a monolithic support instead of being a bulk material in a fixed bed, leads to at least three distinct and important advantages: (1) an insignificant pressure drop, (2) only negligible problems with silica dust generated by the pre ⁇ ceding combustion of the siloxanes and entrained in the flue gas, and (3) the possibility of using a conventional flue gas "duct" design.
  • the preferred siloxane absorption material is alumina, more specifically porous alumina, i.e. high sur- face area alumina.
  • the siloxane absorption mate ⁇ rial can also be hydrated silica, a zeolite or any other material or compound having surface hydroxyl groups in the relevant temperature interval.
  • the siloxane ab ⁇ sorption material can be a sorbent comprising V 2 O 5 on a T1O 2 carrier.
  • the siloxane absorption unit can have a "polishing" effect, i.e. being a secondary siloxane removal unit installed downstream of a primary siloxane removal unit, where said secondary siloxane removal unit may or may not be installed upstream of the power generating equipment or incinerator equipment .
  • the monolithic support is selected from corru- gated fibrous monoliths and extruded cordierite-type mono ⁇ liths .
  • the catalytic emissions control system includes a catalytic conversion step upstream or downstream from the emission control catalyst. It can include an SCR catalyst and/or a CatOx catalyst.
  • the SCR can be combined with catalytic oxidation of CO ei ⁇ ther upstream or downstream from the SCR catalyst.
  • the emission control catalyst is preferably a catalyst capable of performing the SCR reaction, CO oxidation and VOC oxida- tion simultaneously.
  • the process according to the invention can be used in combination with a siloxane removal system lo ⁇ cated upstream from the gas combustion step, so that the process constitutes a polishing step to protect air emis ⁇ sion catalysts downstream from the gas combustion unit.
  • SCR catalysts are most often based on a porous T1O 2 carrier material, on which the catalytically active components, in the form of V 2 O 5 combined with W and/or Mo oxides, are dis ⁇ persed .
  • the siloxane absorption material to be used serves as a catalyst guard, which must be located upstream from the SCR catalyst because this catalyst will decompose any siloxanes present in the flue gas, thereby forming silica which will cover the catalyst surface and thereby block the catalyst and reduce the oxidation activity.
  • the content of Si in the feed gas should be below 10 ppb .
  • a specially formulated metal-free material is designed as a catalyst guard to protect any catalysts from severe silica poisoning problems. It exhibits a very high surface area to maximize silica pick-up and thus protect downstream cata- lysts.
  • the primary benefit of using the process of the invention is that the process enables the use of selective catalytic reduction (SCR) on landfill gas based power production, thereby indeed allowing landfill gas power plants to reach very low NOx emission levels.
  • SCR selective catalytic reduction
  • the inven- tion presents the further advantage of avoiding the use of heat exchangers, trim heaters and/or air coolers to ac ⁇ tively heat up the gas for the siloxane removal and subse ⁇ quently cool it down.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

Dans un processus d'élimination de composés d'organosilicium complètement ou partiellement hydrolysés comprenant des siloxanes, des silazanes et des silanols à partir d'un gaz de combustion chaud en amont d'un système de commande d'émissions catalytique, le gaz de combustion est amené à passer à travers une unité d'élimination de silicium-siloxane contenant un matériau sorbant de siloxane dispersé sur un support monolithique. L'unité d'élimination de siloxane est située en amont de n'importe quelle unité de commande d'émissions catalytique, telle qu'une unité de deNOx, dans laquelle une réduction catalytique sélective (SCR) est effectuée, dans une position dans laquelle le gaz a une température dans la plage de 200 à 800° C.
PCT/EP2018/058730 2017-04-11 2018-04-05 Processus d'élimination de composés d'organosilicium complètement ou partiellement hydrolysés à partir de gaz de combustion en amont d'une unité de commande d'émissions catalytique Ceased WO2018189027A1 (fr)

Applications Claiming Priority (4)

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US201762484183P 2017-04-11 2017-04-11
US62/484,183 2017-04-11
DKPA201700291 2017-05-10
DKPA201700291 2017-05-10

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Cited By (7)

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CN109675431A (zh) * 2018-12-03 2019-04-26 昆明理工大学 一种净化烟气中co耦合抑制白雾的方法及装置
CN111569613A (zh) * 2020-05-26 2020-08-25 唐山三友硅业有限责任公司 有机硅水解HCl气体中微量硅氧烷洗脱装置及方法
WO2020173828A1 (fr) * 2019-02-28 2020-09-03 Haldor Topsøe A/S Procédé d'élimination combinée de siloxanes, de soufre et de cov
WO2021151206A1 (fr) 2020-01-29 2021-08-05 Granitefuel Engineering Inc. Systèmes et méthodes d'élimination de siloxane
FR3117886A1 (fr) * 2020-12-21 2022-06-24 IFP Energies Nouvelles Procede de captation de silicium en absence d’hydrogene
FR3117887A1 (fr) * 2020-12-21 2022-06-24 IFP Energies Nouvelles Procede de captation de silicium a faible vitesse spatiale horaire
US12441886B2 (en) 2020-03-02 2025-10-14 Granitefuel Engineering Inc. Siloxane treatment vessel regeneration

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US20150023844A1 (en) * 2014-10-09 2015-01-22 Caterpillar Inc. Siloxane filter in an exhaust aftertreatment system
US9039807B2 (en) * 2013-06-18 2015-05-26 Guild Associates Regenerative adsorption process for removal of silicon-containing contaminants from process gas using a neutral adsorbent media
US20150209717A1 (en) * 2013-06-18 2015-07-30 Guild Associates Inc. Process for removal of siloxanes and related compounds from gas streams
US20160194991A1 (en) * 2014-10-09 2016-07-07 Caterpillar Inc. Exhaust aftertreatment system with silica filter

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US20070068386A1 (en) * 2005-09-23 2007-03-29 Mitariten Michael J Landfill gas upgrading process
US9039807B2 (en) * 2013-06-18 2015-05-26 Guild Associates Regenerative adsorption process for removal of silicon-containing contaminants from process gas using a neutral adsorbent media
US20150209717A1 (en) * 2013-06-18 2015-07-30 Guild Associates Inc. Process for removal of siloxanes and related compounds from gas streams
US20150023844A1 (en) * 2014-10-09 2015-01-22 Caterpillar Inc. Siloxane filter in an exhaust aftertreatment system
US20160194991A1 (en) * 2014-10-09 2016-07-07 Caterpillar Inc. Exhaust aftertreatment system with silica filter

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Cited By (11)

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WO2020173828A1 (fr) * 2019-02-28 2020-09-03 Haldor Topsøe A/S Procédé d'élimination combinée de siloxanes, de soufre et de cov
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EP4097050A4 (fr) * 2020-01-29 2024-01-17 Granitefuel Engineering Inc. Systèmes et méthodes d'élimination de siloxane
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FR3117886A1 (fr) * 2020-12-21 2022-06-24 IFP Energies Nouvelles Procede de captation de silicium en absence d’hydrogene
FR3117887A1 (fr) * 2020-12-21 2022-06-24 IFP Energies Nouvelles Procede de captation de silicium a faible vitesse spatiale horaire
WO2022135944A3 (fr) * 2020-12-21 2022-08-18 IFP Energies Nouvelles Procede de captation de silicium a faible vitesse spatiale horaire
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