EP1144091A1 - Agent servant a l'epuration de gaz, son procede de production et son utilisation - Google Patents

Agent servant a l'epuration de gaz, son procede de production et son utilisation

Info

Publication number
EP1144091A1
EP1144091A1 EP00907473A EP00907473A EP1144091A1 EP 1144091 A1 EP1144091 A1 EP 1144091A1 EP 00907473 A EP00907473 A EP 00907473A EP 00907473 A EP00907473 A EP 00907473A EP 1144091 A1 EP1144091 A1 EP 1144091A1
Authority
EP
European Patent Office
Prior art keywords
group
acid
representatives
agent
substances
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.)
Withdrawn
Application number
EP00907473A
Other languages
German (de)
English (en)
Inventor
Konrad Fichtel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ftu Forschung und Technische Entwicklung Im Umweltschutz GmbH
Original Assignee
Ftu Forschung und Technische Entwicklung Im Umweltschutz GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ftu Forschung und Technische Entwicklung Im Umweltschutz GmbH filed Critical Ftu Forschung und Technische Entwicklung Im Umweltschutz GmbH
Publication of EP1144091A1 publication Critical patent/EP1144091A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/041—Oxides or hydroxides
    • 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
    • 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
    • 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
    • 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
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/64—Heavy metals or compounds thereof, e.g. mercury
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • B01D53/70—Organic halogen compounds
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/14—Diatomaceous earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3234—Inorganic material layers
    • B01J20/3236—Inorganic material layers containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts

Definitions

  • Agents process for making the agent and use of the agent for gas purification
  • the invention relates to an agent, a method for producing the agent and the use of the agent for gas cleaning.
  • thermal processes e.g. Smelter processes
  • coal firing waste incineration and numerous industrial processes produce exhaust gases that are mixed with volatile heavy metals, e.g. Cadmium, mercury, thallium, arsenic, antimony and lead are contaminated.
  • volatile heavy metals e.g. Cadmium, mercury, thallium, arsenic, antimony and lead are contaminated.
  • elemantare i.e. zero-valent heavy metals or salts, preferably chlorides and oxides.
  • organic pollutants e.g. Dioxins, furans, aromatics and the like.
  • the gases are usually cooled down and the pollutants are washed out wet. This is often not sufficient if the heavy metals are in elemental form. Mercury e.g. is often emitted as an element. It cannot then be separated from the gas using wet washing. In addition, there is the problem that volatile heavy metal salts are emitted as aerosols and / or fine dust that is difficult to separate even after wet washing. The dioxins, aromatics and halogenated hydrocarbons are also insufficiently separated.
  • Another method is to route exhaust gas flows through activated carbon filters. This leads to a decrease in the volatile content
  • Pollutants such as mercury
  • This process is associated with considerable costs because large amounts of highly active coal are used and there is always the risk of smoldering fires in the coal bed.
  • the abrasion that is always present also emits pollutant-containing fine dust, which is difficult to separate.
  • Another method is to apply sulfur to activated carbon and to conduct the gas stream over it.
  • the mercury separation and separation of organic pollutants is quite effective, but the problems of spontaneous combustion and the emission of abrasion remain.
  • the use of sulfided coal fails because of its exorbitant price.
  • the oxidizing agents used preferably hydrogen peroxide, react with all oxidizable substances, e.g. Sulfur dioxide. This means a considerable additional consumption of oxidizing agent.
  • hydrogen peroxide decomposes on the dust of the exhaust gas, e.g. Flying dust, calcium hydroxide, activated carbon and stove coke.
  • the nitrogen oxide content is currently reduced by reduction with ammonia over expensive catalysts. This process is expensive and requires its own part of the plant.
  • the object of the invention is to satisfy the needs listed above and to provide a suitable means.
  • an agent which consists of - Group A: porous, acid-resistant, inorganic substances;
  • Group B inorganic and / or organic acids which are absorbed in the porous, acid-resistant, inorganic substances;
  • - Group C surface-active substances
  • - Group D basic substances, where the representatives of groups A, B and C must always be present, whereas those of group D are used alternatively.
  • the invention is based on having found that the separation performance of the known surface-active substances is achieved by
  • Exposure to acids, which are absorbed in porous, acid-resistant, inorganic substances and during the The deposition process together with the surface-active substances can be improved.
  • Fired clays, diatomaceous earth, perlite, pumice stone, expanded clay, gas concrete, aluminum oxide and / or silica gel are suitable as representatives of group A in powdered or granular form. These substances are highly oxidized compounds which, due to their production, are both stable against acids and have a certain acid pore volume for the acids mentioned.
  • the acid pore volume is determined by adding fine powder, porous, acid-resistant, inorganic material to 1 g of the acid until a dry powder is obtained.
  • the dry mixture of brick powder consists of 75% by weight brick powder and 25% by weight sulfuric acid
  • the dry mixture of diatomaceous earth it consists of 52% by weight kieselguhr and 48% by weight sulfuric acid.
  • the acid-pore volume can be determined for all substances listed and also for all acids.
  • the inorganic or organic acids which are absorbed in the porous, acid-resistant, inorganic substances include sulfuric acid, hydrochloric acid, nitric acid, acetic acid and formic acid. Of the acids listed, sulfuric acid is preferred. Sulfuric acid acts both as an acid and as a strong oxidizing agent in the Exhaust gas cleaning temperatures. This means that O-valent mercury is oxidized to 1- or 2-valent mercury. The oxidation takes place either in the gas space or on the surface-active substances, on which sulfuric acid is also deposited. Not only are volatile heavy metals oxidized, but also organic pollutants, such as especially chlorinated dioxins and furans, chlorinated aromatic and aliphatic hydrocarbons, chlorinated biphenyls, aromatic hydrocarbons and other toxic organic compounds.
  • Nitric acid has a similar effect to that of sulfuric acid, which in addition to its acidic effect also has oxidizing properties.
  • Hydrochloric acid, acetic acid and formic acid are not oxidizing and therefore essentially increase the separation of volatile heavy metals, especially mercury, even in elemental form, surprisingly on the surface-active substances mentioned.
  • Activated carbons of the most varied production brown coal hearth coke (hereinafter referred to only as hearth coke or HOK), activated aluminum oxide and / or silica gel are suitable as surface-active substances. It is known that the activated carbons and also hearth furnace coke are particularly suitable for the separation of organic substances and volatile heavy metals. However, there is always a risk of the occurrence of these purely carbon-containing substances Smoldering. It is therefore appropriate to use aluminum oxide or silica gel in fire-critical situations.
  • the agent according to the invention forms a universal system for the excellent separation of volatile heavy metals and organic pollutants and also of nitrogen oxides, in particular nitrogen monoxide.
  • the external form of the product is either in powder form or as granules.
  • powdery form with a grain size ⁇ 100 ⁇ m, preferably ⁇ 50 ⁇ m, preferably ⁇ 10 // m, it serves as an adsorbent in the entrained flow process.
  • the grain size is between 1 and 10 mm, preferably between 2 and 5 mm.
  • the granularity of the individual components is appropriately coordinated so that no segregation can occur when a mixture is used. This applies in particular to the use of dust-like agents in which there is a possibility of segregation due to the turbulence caused in the exhaust gas.
  • the acids can be present in the porous inorganic substances in an aqueous solution of any concentration or, in the case of sulfuric acid, acetic acid and formic acid, in an anhydrous form.
  • sulfuric acid in particular, it is advisable to work with concentrated sulfuric acid, since the need for porous inorganic substances is low and the oxidizing effect of sulfuric acid is higher.
  • a preferred agent consists of porous brick powder and / or diatomaceous earth with absorbed sulfuric acid, nitric acid and / or hydrochloric acid and activated carbon and / or hearth furnace coke and calcium hydroxide and / or calcium carbonate.
  • the preferred agent can both separate the volatile heavy metals well and also significantly reduce the content of numerous organic pollutants and also nitrogen oxides.
  • the presence of calcium hydroxide and / or calcium carbonate also leads to a sufficient reduction in the content of hydrogen chloride and sulfur dioxide in the exhaust gas.
  • the amounts of the individual components can be varied within a wide range in the agent according to the invention.
  • the content of basic substances primarily calcium hydroxide, depends on the content of hydrogen chloride and sulfur dioxide.
  • the content is then preferably 45-98% by weight of basic substances.
  • the surface-active substances preferably have a content of 1 to 50% by weight, while group A with the absorbed acids preferably has a proportion of 1 to 5% by weight. With this proportion of porous, inorganic, acid-resistant substances, the amount of acid absorbed is sufficient to oxidize the volatile heavy metals, especially the 0-valent mercury and also the organic substances. In addition, the proportion of nitrogen oxides can be significantly reduced.
  • the agent consists of porous brick powder and / or diatomaceous earth with absorbed sulfuric acid, nitric acid and / or hydrochloric acid and activated carbon and / or hearth furnace coke.
  • the agent is used to purify exhaust gases that have already been pre-cleaned in a cleaning process, be it in the entrained flow process in a dry version or in the wet process. Since the majority of the acidic components, hydrogen chloride and sulfur dioxide, have already been removed, the presence of the basic substances can be dispensed with.
  • Another application is when the gases to be cleaned are acid-free.
  • the basic agents can be added in small amounts. The amount required to neutralize the amount of acids introduced is sufficient.
  • the composition consists of 1 to 10% by weight of a representative of group A with absorbed acids and 90 to 99% by weight of representatives of group C, that is to say the surface-active substances.
  • the agents according to the invention can be prepared by the method according to the invention in that the representatives of the listed components are mixed dry. This is expediently done by adding large amounts of representatives of group A, ie the porous, acid-resistant, inorganic substances, to the acids until a powder with the usual flow, flow and flight properties is obtained. This mixture of representatives of group A and group B is then mixed with the likewise powdery and dry representatives of group C and optionally also with D. There is then an easy-to-use powdery mixture that can be used for the entrained-flow process.
  • the agent according to the invention can also be present as granules.
  • the representatives of groups C and D are produced in a known manner into granules whose grain size is in the range from 1 to 10 mm, preferably 2 to 5 mm.
  • Granular material from group A which contains the acids, is now added to these granules. This mixture of granulated and granular material can then be used for exhaust gas cleaning in a fixed bed.
  • Is group D i.e. dispenses with the basic materials, then a mixture of granular surface-active substances and granular material from group A, which contains the acids, is prepared.
  • the agent according to claims 1 to 9 is used according to the invention to remove volatile heavy metals, in particular elemental heavy metals, chlorinated dioxins and furans, chlorinated aromatic and aliphatic hydrocarbons, chlorinated biphenyls, aromatic hydrocarbons, toxic organic compounds, hydrogen chloride and / or sulfur dioxide and nitrogen oxides from gases , in particular exhaust gases, used by breaking into the gas stream, treating harmful constituents of the gas with the agent at a temperature of 20 to 400 ° C., in particular 60 to 250 ° C., preferably 1 20 to 210 ° C., and the reaction products as well unreacted agent can be separated on fabric filters or electrostatic filters.
  • This method consists in that the pulverulent material is injected into the exhaust gas stream in a known manner, swirled in the latter and then the solids are applied to a fabric filter or an electrostatic filter.
  • the temperature must be so high that there is no condensation of water on the agent according to the invention. In general a temperature of 30 ° C above the dew point of the gas is selected.
  • the agent is preferably used in dry sorption, conditioned dry sorption and spray sorption. Depending on the structure of the cleaning process, the agent can be introduced into the gas stream at various points in the exhaust gas cleaning system. The addition is preferably carried out as a mixture of all substances.
  • Spray sorption must be carried out in such a way that the agent can only be added without the basic components of group D after the drying process has been carried out. That is, an agent is used from the representatives of group A, which contain the acids, and representatives of group C, the surface-active substances.
  • Example 1 comparative example
  • a mixture of 98% by weight Ca (OH) 2 and 2% by weight brick powder / sulfuric acid powder was prepared from calcium hydroxide (Ca (OH 2 ) and this brick powder / sulfuric acid mixture.
  • Adsorbent produced the following composition.

Abstract

L'invention concerne un agent servant à l'épuration de gaz et de gaz de combustion, contenant A) des matières inorganiques, résistant aux acides, poreuses, telles que de la farine de brique ou du kieselguhr; B) des acides inorganiques et/ou organiques présents sous forme absorbée dans lesdites matières inorganiques, résistant aux acides, poreuses; C) des substances tensioactives et éventuellement D) des substances basiques. Cet agent sert à l'épuration de gaz dans une plage de températures comprises entre 20 et 400 DEG C.
EP00907473A 1999-01-14 2000-01-13 Agent servant a l'epuration de gaz, son procede de production et son utilisation Withdrawn EP1144091A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19901049A DE19901049B4 (de) 1999-01-14 1999-01-14 Mittel zur Reinigung von Gasen und Abgasen und ihre Verwendung
DE19901049 1999-01-14
PCT/EP2000/000239 WO2000041796A1 (fr) 1999-01-14 2000-01-13 Agent servant a l'epuration de gaz, son procede de production et son utilisation

Publications (1)

Publication Number Publication Date
EP1144091A1 true EP1144091A1 (fr) 2001-10-17

Family

ID=7894149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00907473A Withdrawn EP1144091A1 (fr) 1999-01-14 2000-01-13 Agent servant a l'epuration de gaz, son procede de production et son utilisation

Country Status (3)

Country Link
EP (1) EP1144091A1 (fr)
DE (1) DE19901049B4 (fr)
WO (1) WO2000041796A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1015841A3 (fr) † 2003-12-24 2005-10-04 Lhoist Rech & Dev Sa Composition pulverulente a base d'un compose calco-magnesien.
CN101773768A (zh) * 2010-03-16 2010-07-14 长春惠工净化工业有限公司 从气体中脱除HCl的干法脱氯剂及其制备方法
DE102012202563A1 (de) 2012-02-20 2013-08-22 Lufthansa Technik Ag Filtergranulat
CN110917869B (zh) * 2018-09-20 2022-09-06 中国石油化工股份有限公司 一种降低催化裂化过程中不完全再生烟气中NOx排放量的方法
CN110433618A (zh) * 2019-08-13 2019-11-12 上海云兰环保科技有限公司 一种绿色环保型tvoc清除剂

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Publication number Priority date Publication date Assignee Title
EP0487913B1 (fr) 1990-10-29 1996-04-17 Walhalla-Kalk Entwicklungs- und Vertriebsgesellschaft mbH Réactifs et compositions ayant une réactivité haute pour l'épuration de gaz d'échappement et d'eau usée, leur préparation et leur utilisation

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