EP0377010A1 - Agent et procede pour purifier des gaz et des gaz d'echappement, et procede pour produire ledit agent - Google Patents

Agent et procede pour purifier des gaz et des gaz d'echappement, et procede pour produire ledit agent

Info

Publication number
EP0377010A1
EP0377010A1 EP19890906076 EP89906076A EP0377010A1 EP 0377010 A1 EP0377010 A1 EP 0377010A1 EP 19890906076 EP19890906076 EP 19890906076 EP 89906076 A EP89906076 A EP 89906076A EP 0377010 A1 EP0377010 A1 EP 0377010A1
Authority
EP
European Patent Office
Prior art keywords
substances
active substances
gases
heavy metals
calcium hydroxide
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.)
Ceased
Application number
EP19890906076
Other languages
German (de)
English (en)
Inventor
Hermann Dr. Sucherwirth
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 GmbH
Original Assignee
FTU 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25868128&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0377010(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by FTU GmbH filed Critical FTU GmbH
Publication of EP0377010A1 publication Critical patent/EP0377010A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/64Heavy metals or compounds thereof, e.g. mercury
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/68Halogens or halogen compounds
    • B01D53/70Organic halogen compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/72Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00Lime, magnesia or dolomite
    • C04B2/02Lime
    • C04B2/04Slaking
    • C04B2/06Slaking with addition of substances, e.g. hydrophobic agents ; Slaking in the presence of other compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/40Alkaline earth metal or magnesium compounds
    • B01D2251/404Alkaline earth metal or magnesium compounds of calcium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/60Inorganic bases or salts
    • B01D2251/604Hydroxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/102Carbon

Definitions

  • the invention relates to an agent and a method for cleaning gases and exhaust gases and a method for the production of these agents.
  • the pollutants of importance include hydrogen chloride, hydrogen fluoride, sulfur dioxide, nitrogen oxides, carbon monoxide, heavy metals in volatile form, dioxins, furans, chlorinated hydrocarbons, polycyclic aromatic hydrocarbons and the like, ie ecotoxic pollutants.
  • Elemental mercury is one of the substances that cause problems owing to their high volatility.
  • the polychlorinated dibenzodioxins and dibenzofurans which are considered harmful even in the smallest concentration, can be found in almost all gases according to conventional cleaning systems.
  • Activated carbon or activated coke is already used to remove the residual contents of acidic pollutants, chlorinated hydrocarbons, polycondensed aromatic hydrocarbons, volatile heavy metals and also NO with NH3 from exhaust gas streams.
  • the usual way of working is to pass the pre-cleaned exhaust gas over activated carbon fixed bed reactors or moving bed reactors.
  • the operating temperature is 80-150 degrees C.
  • This method of operation is effective when an exhaust gas is used which contains only low levels of sulfur dioxide, HC1 and dust, which requires efficient, upstream exhaust gas cleaning.
  • a further disadvantage is that the coal can self-ignite in the activated carbon reactors. This is the case in particular in the event of operational downtimes.
  • Activated carbon accumulations can occur in the reaction product, which give rise to smoldering fires in activated carbon nests in the intermediate storage containers. Furthermore, the uniform distribution of the activated carbon in the exhaust gas stream causes problems during direct injection.
  • the uniform suspension of activated carbon in the calcium hydroxide suspension is also not easy and gives rise to fluctuating separation rates, so that compliance with the limit values is problematic.
  • the invention further provides a method for producing dry powders based on calcium hydroxide for gas and exhaust gas purification according to independent claim 9. Preferred developments of these methods are described in the dependent 10-15 patent claims.
  • the object is achieved in two stages in that, in a first stage, reactive calcium hydroxides are prepared which contain surface-active substances which, in a second stage, are used to act on the pollutants of exhaust gases in a dry process , and be separated again from the exhaust gas stream.
  • the process according to the invention for producing reactive calcium hydroxide for gas and exhaust gas purification is characterized in that surface-active substances are added to the quicklime before the quicklime is extinguished, to the extinguishing water during the extinguishing and to the calcium hydroxide after the extinguishing.
  • silica gel, diatomaceous earth, activated aluminum oxide, activated carbon and or hearth furnace lignite coke in powder form are used as surface-active substances.
  • the average active surface for activated carbon is around 600 m2 / g.
  • the pollutants are deposited on these active surfaces, in particular mercury, dioxins, PCßs, but also to a certain extent S02, HC1 and NOx. These substances remain there or ⁇ can be converted into other substances.
  • the surface-active substances are used as powders.
  • the surface-active substances have a grain size, determined as a sieve passage, of ⁇ 200ug. A grain size which corresponds to that of calcium hydroxide powder is preferred.
  • the process according to the invention can also advantageously be carried out by subjecting the powdery surface-active substances to catalysts for oxidation, reduction and / or decomposition reactions before they are used for the treatment of gases and exhaust gases.
  • the application takes place in such a way that the corresponding heavy metals are applied to the surface-active substances as water-soluble salts or dissolved in organic solvents, and the surface-active substances are then subjected to drying.
  • catalysts for a wide variety of reactions on the surface-active substances are also advantageously be carried out by subjecting the powdery surface-active substances to catalysts for oxidation, reduction and / or decomposition reactions before they are used for the treatment of gases and exhaust gases.
  • alcoholic solutions can also be used.
  • Water-soluble chlorides and nitrates are predominantly used as salts.
  • the heavy metal binding substances are water-soluble sulfides, e.g. Sodium sulfide and mercaptans, or trimercapto-s-triazine for use.
  • the combination of the activated carbon provided with heavy metals with calcium hydroxide has a multiple function.
  • the presence of the inorganic substance reduces the risk of burning the active carbons loaded with heavy metals. Effective inhibition occurs when calcium hydroxide as a fine powder together with the Activated carbons are present.
  • the risk of ignition can be suppressed particularly strongly if the activated carbons are mixed together with quicklime and then subjected to an extinguishing reaction, so that activated carbon and calcium hydroxide are present in very fine distribution, in some cases. Calcium hydroxide is deposited in the pores of the activated carbon.
  • a further embodiment of the production of the reactive calcium hydroxides consists in mixing the surface-active substances with quicklime and adding the pollutant-binding and / or catalytically active substances to the extinguishing water.
  • calcium hydroxide and surface-active substances are mixed, the latter possibly. are acted upon by catalytically active and / or heavy metal-binding substances.
  • a special embodiment of the production of reactive calcium hydroxides according to the invention consists in using surface-active substances which have a catalytic effect with heavy metals which have an effect on oxidation or reduction processes, and with substances with a basic effect, such as sodium hydrogen carbonate, sodium carbonate, sodium hydroxide and the like. are acted upon. With this combination of heavy metals and basic compounds on surface-active substances, oxidation and reduction processes can be controlled via potential changes.
  • the acids also act on the heavy metals with regard to the form of the compound and redox potential.
  • the calcium hydroxides containing surface-active substances produced according to the invention are used in the process according to the invention for cleaning exhaust gases.
  • the process according to the invention for the purification of gases and exhaust gases from acidic pollutants such as hydrogen chloride, hydrogen fluoride, sulfur dioxide, hydrocyanic acid and the like, nitrogen oxides, hydrocarbons, chlorinated hydrocarbons, organic compounds and volatile heavy metals, e.g.
  • Mercury, arsenic, antimony, cadmium and thalium, using surface-active substances is characterized in that finely powdered, dry calcium hydroxide is added to the gas or exhaust gas stream, which contains surface-active substances such as activated carbon, lignite Oven coke, silica gel, silica and / or active aluminum oxide contains, added and mixed with the exhaust gas stream in a reactor and the calcium hydroxide powder with the bound pollutants without lowering the reaction temperature on dust separating devices, in particular on fabric filters or electrostatic precipitators from which gas flow is separated.
  • surface-active substances such as activated carbon, lignite Oven coke, silica gel, silica and / or active aluminum oxide
  • a drop in temperature e.g. from 200 to 120 degrees C, as is practiced, is not necessary in order to remove dioxins, PAHs and mercury as far as possible.
  • Calcium hydroxides which have been produced from quicklime, mixed with surface-active substances, are particularly resistant to separation.
  • Pneumatic devices are preferably used to inject the modified calcium hydroxides.
  • the used Ca (0H) 2 is preferably separated on fabric filters. E-filters are also suitable.
  • activated carbon / activated coke also acts as a catalyst for reducing NOx with NH3 to N2.
  • This embodiment of the invention is suitable when no or little acidic pollutants are present in the exhaust gas, that is to say that the expensive basic Ca (0H) 2 can be dispensed with.
  • the treatment of the exhaust gas with the surface-active substances takes place in the temperature range of 20-1200 degrees C, preferably in the range of 80-250 degrees C, in particular in the range of 170-240 degrees C, more preferably in the temperature range from 180-220 degrees C.
  • the water content of the exhaust gas is decisive for the choice of temperature.
  • the lowest temperature limit should be 30 to 40 degrees C above the dew point.
  • the temperature should not drop below 130 to 140 degrees C, since otherwise encrustations occur on the tissue filter.
  • An advantageous form of the process according to the invention is that in a multi-stage process the gases and exhaust gases are first subjected to dry or wet cleaning and then for the residual separation of the inorganic and organic pollutants the gases and exhaust gases with substances which contain surface-active substances. if necessary are treated with heavy metals, are treated, in order to reduce nitrogen oxides in the gas stream prior to treatment with the surface-active substances, ammonia or suitable nitrogen-containing compounds, e.g. Urea are added.
  • the heavy metals to the surface-active substances ha ⁇ the function ben the oxidation of S02 to S03, C0 to C02, NO to N02 and Sieren hydrocarbons to C02 and H20 to catalytically ".
  • the oxidation of sulfur dioxide to sulfur trioxide has the advantage that the more volatile sulfur trioxide is formed from the volatile sulfur dioxide, which is preferably deposited on the surface-active substances.
  • the surface-active substances are used together with basic substances, be it lime or calcium hydroxide, then immediate implementation with these basic substances is also possible.
  • Particularly favorable catalysts for this are manganese, vanadium, iron and platinum.
  • a further possibility is to convert the carbon monoxide which is always present in the exhaust gases into harmless carbon dioxide using the catalysts and the oxygen present.
  • the chlorinated or sulfur-containing hydrocarbons can also be oxidized to the basic compounds C02, H20, HC1 and / or S02 in residual contents and thus removed as ecotoxic pollutants.
  • Chromium, vanadium, iron, palladium, copper and manganese are particularly suitable for the oxidation of organic substances.
  • nitrogen monoxide which can be converted to nitrogen dioxide with the action of catalysts, in particular chromium, titanium, iron and manganese.
  • catalysts in particular chromium, titanium, iron and manganese.
  • This is water-soluble and can be washed out of the exhaust gas stream.
  • it can be converted into non-volatile salts immediately in the presence of basic substances.
  • the reduction of nitrogen oxide with ammonia or nitrogen-containing compounds, e.g. Urea is favored by the heavy metal catalysts.
  • the effect of the oxidation catalysts for sulfur dioxide and also for nitrogen oxide can be increased if the surface-active substances together with the heavy metals also have basic-acting substances, for example sodium hydroxide, sodium carbonate, sodium bicarbonate, etc. be worn. As the oxidation takes place in the direct vicinity of the basic substances, the higher oxides of sulfur and nitrogen can be integrated immediately.
  • basic-acting substances for example sodium hydroxide, sodium carbonate, sodium bicarbonate, etc.
  • This method of operation is particularly important when the method according to the invention is used for the residual removal of acidic pollutants.
  • the surface-active substances can preferably be used for residual cleaning. This applies in particular to organic substances and also to the residual levels of hydrogen chloride and sulfur dioxide.
  • the process is particularly important for the deposition of nitrogen oxides.
  • the conventional cleaning methods do capture hydrogen fluoride, hydrogen chloride and sulfur dioxide to a sufficient extent, but are only able to separate the nitrogen oxide to a small extent.
  • the subsequent cleaning with the aid of surface-active substances to which catalysts have been applied means that nitrogen oxide can either be oxidized and then separated with basic substances, or reduced to nitrogen with ammonia.
  • the use of the surface-active substances charged with heavy metals in combination with Ca (0H) 2 or inorganic dusts is of course not restricted to use in a post-cleaning stage, but also includes the initial use.
  • the method according to the invention is for the treatment of gases and exhaust gases from power plants, from waste incineration plants, from special waste incineration plants, from combustion plants, from plants for the production of glass and ceramics, from plants for remelting old aluminum and also for treating gases and exhaust gases from numerous production processes, e.g. . B. the smelting of ores, and other industrial processes, can be used.
  • HgC12 content 1.29 ⁇ g / l
  • Lignite hearth coke in combination with inert material is also suitable for mercury separation from exhaust gases.
  • A1203 is therefore suitable as a sorbent for the separation of mercury from exhaust gases.
  • the waste gas from a waste incineration plant was dry cleaned with Ca (0H) 2 at 200 degrees Celsius.
  • the content of which in the raw gas was 330 ⁇ g / m3
  • 25 kg of Ca (0H) 2 and 1.25 kg of lignite-hearth furnace coke dust were blown in per ton of waste, mixed in a reactor and separated on a fabric filter.
  • Ca (0H) 2 and coke dust had been mixed beforehand.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

Des tensioactifs tels que du charbon actif, du coke de lignite de four à sole, de l'oxyde d'aluminium activé et du gel de silice sont ajoutés, sous une forme finement divisée, à l'eau nécessaire à l'extinction de la chaux vive. Le Ca(OH)2 obtenu convient particulièrement pour éliminer le Hg des gaz et des gaz d'échappement. Des teneurs résiduelles en HCl, SO2 et NOx peuvent également être éliminées. Les tensioactifs peuvent aussi être mélangés à la chaux vive avant son extinction ou bien au Ca(OH)2. Les tensioactifs peuvent être chargés de métaux lourds catalytiquement actifs, par exemple du vanadium, ou bien de substances qui lient les métaux lourds, par exemple du sulfure de sodium. Les tensioactifs utilisés sont du charbon actif, du coke de lignite de four à sole, du gel de silice, de la diatomite et/ou de l'alumine activée.
EP19890906076 1988-05-16 1989-05-16 Agent et procede pour purifier des gaz et des gaz d'echappement, et procede pour produire ledit agent Ceased EP0377010A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3816595 1988-05-16
DE3816595 1988-05-16
DE3838987 1988-11-18
DE3838987 1988-11-18

Publications (1)

Publication Number Publication Date
EP0377010A1 true EP0377010A1 (fr) 1990-07-11

Family

ID=25868128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890906076 Ceased EP0377010A1 (fr) 1988-05-16 1989-05-16 Agent et procede pour purifier des gaz et des gaz d'echappement, et procede pour produire ledit agent

Country Status (3)

Country Link
EP (1) EP0377010A1 (fr)
DE (1) DE3915934C2 (fr)
WO (1) WO1989011329A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10822442B2 (en) 2017-07-17 2020-11-03 Ecolab Usa Inc. Rheology-modifying agents for slurries

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5306475A (en) * 1987-05-18 1994-04-26 Ftu Gmbh Technische Entwicklung Und Forschung Im Umweltschutz Reactive calcium hydroxides
DE3935904A1 (de) * 1988-10-28 1990-05-03 Ftu Gmbh Mittel und verfahren zur reinigung von gasen und abgasen von schwermetallen und ein verfahren zur herstellung dieser mittel
DE4012982A1 (de) * 1990-04-24 1991-10-31 Ftu Gmbh Verfahren zur reinigung von gasen und abgasen von anorganischen und organischen schadstoffen
US5209912A (en) * 1990-05-02 1993-05-11 Ftu Gmbh Process for separating out noxious substances from gases and exhaust gases
JPH04156919A (ja) * 1990-10-19 1992-05-29 Ebara Res Co Ltd ハロゲン系化合物を含有する排ガスの処理方法
DE4034417C2 (de) * 1990-10-29 2002-02-07 Walhalla Kalk Entwicklungs Und Hochreaktive Reagentien und Zusammensetzungen für die Abgas- und Abwasserreinigung, ihre Herstellung und ihre Verwendung
DE4100645A1 (de) * 1991-01-11 1992-07-16 Hansjoerg Regler Verfahren zur abscheidung von schadstoffen, insbesondere von sauren schadstoffen, aus gasen und abgasen
DK170891A (da) * 1991-02-19 1992-08-20 Intevep Sa Fremgangsmaade til fjernelse af effluenter fra udgangsgasser dannet ved forbraending af et braendstof
FR2676180B1 (fr) * 1991-05-07 1995-08-04 Lab Sa Procede d'epuration de fumees contenant des polluants organiques condensables.
DE4119486A1 (de) * 1991-06-13 1992-12-17 Oetelshofen & Co Kabel Verfahren zur entfernung von organischen und anorganischen schadstoffen aus gasen, fluessigkeiten und feststoffen, mittel dafuer und dessen verwendung
DE4124844A1 (de) * 1991-07-26 1993-01-28 Krc Umwelttechnik Gmbh Verfahren zur reinigung von stark mit quecksilber belasteten rauchgasen
DE4127075A1 (de) * 1991-08-16 1993-02-18 Nymic Anstalt Verfahren zum reinigen von belasteten abgasen von verbrennungsanlagen
US5378444A (en) * 1991-12-11 1995-01-03 Japan Pionics Co., Ltd. Process for cleaning harmful gas
DE4206541A1 (de) * 1992-03-02 1993-09-16 Johannes Peine Kalkhaltiges mittel zur reinigung von abgasen
DE4233223C2 (de) * 1992-10-02 1997-06-19 Flaekt Ab Verfahren zur Reinigung von Rauchgasen aus Abfallverbrennungsanlagen
DE4303450C2 (de) * 1993-02-05 1997-07-03 Rheinische Kalksteinwerke Mittel zur trockenen Reinigung von Abgasen
FR2713104B1 (fr) * 1993-11-30 1996-01-12 Lab Sa Procédé d'épuration de fumées contenant des polluants organiques peu solubles.
US5470556A (en) * 1993-12-22 1995-11-28 Shell Oil Company Method for reduction of sulfur trioxide in flue gases
DE4344113A1 (de) * 1993-12-23 1995-06-29 Metallgesellschaft Ag Verfahren zur Reinigung von Abgasen der Abfallverbrennung
DE19607965C2 (de) * 1996-03-01 2002-07-11 Sued Chemie Ag Verfahren zur Verhinderung der Selbstentzündung gebrauchter, mit brennbaren organischen Stoffen beladener Adsorptionsmittel, danach erhaltene Adsorptionsmittel sowie deren Verwendung
DE19609966A1 (de) * 1996-03-14 1997-09-25 Intensiv Filter Gmbh Verfahren zur Reinigung SO¶2¶-haltiger Abgase
DE19901049B4 (de) * 1999-01-14 2011-03-10 Ftu Gmbh Forschung Und Technische Entwicklung Im Umweltschutz Mittel zur Reinigung von Gasen und Abgasen und ihre Verwendung
CN1099902C (zh) * 1999-12-08 2003-01-29 中国科学院山西煤炭化学研究所 一种用于处理废气中二氧化硫的催化剂及其应用方法
US6841513B2 (en) * 2001-03-29 2005-01-11 Merck & Co., Inc. Adsorption powder containing cupric chloride
US7777407B2 (en) * 2005-05-04 2010-08-17 Lg Display Co., Ltd. Organic light emitting devices comprising a doped triazine electron transport layer
DE102009045278B4 (de) 2009-10-02 2011-12-15 Dirk Dombrowski Mineralisches, granuliertes Entschwefelungsmittel auf Basis von Calciumhydroxid, Verfahren zu seiner Herstellung sowie seine Verwendung
DE102011004900A1 (de) * 2011-03-01 2012-09-06 Dirk Dombrowski Mineralisches, granuliertes Entschwefelungs- und Reduktionsmittel, Verfahren zu seiner Herstellung sowie seine Verwendung
PL2671626T3 (pl) 2012-06-04 2019-03-29 Hitachi Zosen Inova Ag Sposób oczyszczania gazów odlotowych ze spalania śmieci z zawracaniem sorbentu, które obejmuje wymiennik ciepła do chłodzenia sorbentu
PL414675A1 (pl) * 2013-03-13 2017-06-19 Novinda Corporation Wieloskładnikowa substancja do usuwania rtęci
DE102014118767A1 (de) * 2014-09-29 2016-03-31 ReNabi GmbH & Co. oHG Verfahren zur Behandlung von Abgasen
CN109127644A (zh) * 2017-06-16 2019-01-04 中国石油天然气股份有限公司 一种废弃氧化铁脱硫剂的处理方法
DE102018008430A1 (de) * 2018-10-26 2020-04-30 Dräger Safety AG & Co. KGaA Absorptionsmittel-Zusammensetzung, Vorrichtung enthaltend die Absorptionsmittel-Zusammensetzung und Verfahren zum Abreichern von Kohlendioxid aus Gasgemischen
CN109847569B (zh) * 2019-03-28 2021-04-30 西安元创化工科技股份有限公司 一种高温气相脱氯剂的制备方法

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423689A (en) * 1945-05-18 1947-07-08 Dewey And Almy Chem Comp Soda lime composition
DE2904312A1 (de) * 1979-02-05 1980-08-07 Bergwerksverband Gmbh Verfahren zur trockenen, adsorptiven hcl-abscheidung
DE2948305C2 (de) * 1979-11-30 1985-01-10 Deutsche Kommunal-Anlagen Miete GmbH, 8000 München Verfahren zum trockenen Reinigen von quecksilberhaltigen Gasen, insbesondere Abgasen, thermischer Prozesse
DE3232081A1 (de) * 1982-08-28 1984-03-01 Rheinisch-Westfälisches Elektrizitätswerk AG, 4300 Essen Absorptionsmittel fuer die trockene entfernung von schwefeldioxid aus rauchgasen
DE3243788A1 (de) * 1982-11-26 1984-05-30 Steag Ag, 4300 Essen Verfahren zur herstellung der absorptionsmittelloesung fuer einen rauchgaswaescher und vorrichtung zur durchfuehrung des verfahrens
CA1216136A (fr) * 1983-03-03 1987-01-06 Toshio Aibe Methode de captage de gaz nocifs
DK348583D0 (da) * 1983-07-29 1983-07-29 Smidth & Co As F L Fremgangsmade og apparat til fjernelse af svovloxider fra varm roeggas ved toermetoden
AT380645B (de) * 1983-11-25 1986-06-25 Waagner Biro Ag Verfahren zur abscheidung von sauren schadgasen und verbrennungsanlage zur durchfuehrung des verfahrens
DE3400764A1 (de) * 1984-01-12 1985-07-25 Collo Gmbh, 5303 Bornheim Koerniges filtermittel zur entfernung von schadstoffen aus der luft
EP0173640A3 (fr) * 1984-07-30 1986-12-30 Mitsubishi Jukogyo Kabushiki Kaisha Méthode pour traiter le gaz d'échappement
DE3439059A1 (de) * 1984-10-25 1986-04-30 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Absorptionsmittel fuer die trockenentfernung von schwefeldioxid aus rauchgasen
GB2172277B (en) * 1985-03-13 1989-06-21 Hokkaido Electric Power Preparation process of desulfurizing and denitrating agents
US4639259A (en) * 1985-10-09 1987-01-27 Kaiser Aluminum & Chemical Corporation Promoted scavenger for purifying HCl-contaminated gases
DE3541695A1 (de) * 1985-10-26 1987-05-27 Hoelter Heinz Verfahren zur schadstoffbeseitigung hinter der nassloeschung in kokerei-loeschtuermen bei gleichzeitiger wasseraufbereitung
DE3543531A1 (de) * 1985-12-10 1987-10-15 Saxonlord Ltd Verfahren zur reinigung von abfall-, rauch- und verbrennungsgasen
DE3612932A1 (de) * 1986-04-17 1987-10-22 Hoelter Heinz Filtermassen fuer luftreinigungsvorrichtungen
DE3620024A1 (de) * 1986-06-13 1987-12-17 Fels Werke Peine Salzgitter Verfahren zur herstellung von feinkoernigem calciumhydroxid
DE3621981C1 (en) * 1986-07-01 1987-09-10 Metallgesellschaft Ag Process for the preparation of calcium-containing sorbents for the absorption of SO2 from exhaust gases
DE3624300A1 (de) * 1986-07-18 1988-01-28 Metallgesellschaft Ag Verfahren zur herstellung calciumhydrathaltiger sorbenten fuer die so(pfeil abwaerts)2(pfeil abwaerts)-absorption aus abgasen
DE3729482A1 (de) * 1986-12-18 1988-06-30 Hoelter Heinz Verfahren zur reduzierung von no(pfeil abwaerts)x(pfeil abwaerts)-emissionen von rauchgasen aus feuerungsanlagen
DE3644381A1 (de) * 1986-12-24 1988-07-07 Berlin Consult Gmbh Verfahren und anlage zur minimierung von schadstoff-emissionen aus verbrennungsanlagen
DE3702306A1 (de) * 1987-01-27 1988-08-04 Hoelter Heinz Verfahren zur abtrennung von schwermetallen aus den abgasen von feuerungsanlagen
DE3716566A1 (de) * 1987-05-18 1988-12-01 Fichtel Roland Verfahren zur herstellung reaktionsfaehiger calciumhydroxide fuer die abgasreinigung
EP0496432B1 (fr) * 1987-05-18 1994-08-31 Ftu Gmbh Procédé pour purifier des gaz et des gaz d'echappement
DE3717848A1 (de) * 1987-05-27 1988-12-08 Rwk Rhein Westfael Kalkwerke Anorganisches material und verfahren zu seiner herstellung
DE3721317A1 (de) * 1987-06-27 1989-01-05 Hoelter Heinz Verfahren zur herstellung reaktionsfaehiger calciumhydroxide fuer die abgasreinigung
EP0301272A3 (fr) * 1987-07-29 1990-12-05 Waagner-Biro Aktiengesellschaft Procédé et dispositif pour l'épuration des gaz ou d'air d'échappement
DE3726665A1 (de) * 1987-08-11 1989-02-23 Rwk Rhein Westfael Kalkwerke Aktiviertes kalkhydrat, verfahren zu seiner herstellung und verwendung desselben
DE3733208A1 (de) * 1987-10-01 1989-06-15 Hoelter Heinz Verfahren und vorrichtung zur trockenen schadgasabscheidung wie so(pfeil abwaerts)3(pfeil abwaerts), so(pfeil abwaerts)2(pfeil abwaerts), hcl, hf und no(pfeil abwaerts)x(pfeil abwaerts) mittels alkalisch reagierenden poroesen traegermaterials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8911329A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10822442B2 (en) 2017-07-17 2020-11-03 Ecolab Usa Inc. Rheology-modifying agents for slurries

Also Published As

Publication number Publication date
DE3915934A1 (de) 1989-11-30
WO1989011329A1 (fr) 1989-11-30
DE3915934C2 (de) 1999-08-12

Similar Documents

Publication Publication Date Title
EP0377010A1 (fr) Agent et procede pour purifier des gaz et des gaz d'echappement, et procede pour produire ledit agent
EP0314733B1 (fr) Utilisation d'hydroxyde de calcium reactif pour la purification de gaz et de gaz d'echappement
EP0487913B1 (fr) Réactifs et compositions ayant une réactivité haute pour l'épuration de gaz d'échappement et d'eau usée, leur préparation et leur utilisation
EP2033702B1 (fr) Procédé destiné à retirer du mercure de gaz de combustion
EP0454885A1 (fr) Procédé pour la purification de gaz et de gaz d'échappement de polluant
DE19745191A1 (de) Mittel, Verfahren zur Herstellung der Mittel und Verwendung der Mittel zur Gasreinigung
EP2411123B1 (fr) Procédé de traitement d'effluents gazeux contenant des oxydes de soufre
EP1916027B1 (fr) Agent de sorption contenant du carbone et son procédé de fabrication
EP0283721B1 (fr) Procédé pour enlever des matériaux nocifs de gaz
DE112014001316T5 (de) Mehrkomponenten-Zusammensetzungen zur Entfernung von Quecksilber
DE102012012367B4 (de) Aktivierter trass,dessen herstellung und verwendung
EP0367148B1 (fr) Agents et méthode pour purifier des gaz et des gaz d'échappement des métaux lourds et procédé de préparation de ces agents
EP2416871B1 (fr) Procédé de traitement de fumées résultant de la fabrication de l'acier
DE4339072A1 (de) Verfahren zur Abtrennung von Quecksilber und Quecksilberverbindungen aus heißem, Schwefelverbindungen enthaltendem Abgas
EP0748766B1 (fr) Granulate à base de carbonates des métaux alcalino-terreux contenant des composées ad- ou absorbants
DE3844217C2 (de) Verfahren zur Herstellung von Calciumhydroxiden und deren Verwendung
DE19901309A1 (de) Verfahren zur Reinigung reduzierend wirkender Gase
AT395683B (de) Verfahren zur herstellung eines rauchgas-behandlungsmittels
DE69918456T2 (de) Verfahren zur reinigung eines mit wasserstoffchlorid und schwermetallen verunreinigten rauchgases, inertisierung der schwermetallen und valorisierung des wasserstoffchlorids
DE3935904A1 (de) Mittel und verfahren zur reinigung von gasen und abgasen von schwermetallen und ein verfahren zur herstellung dieser mittel
EP1144091A1 (fr) Agent servant a l'epuration de gaz, son procede de production et son utilisation
EP3000522A1 (fr) Procede de traitement de gaz d'echappement
DE2641045A1 (de) Verfahren zur entfernung von h tief 2 s, hcn, no tief x und so tief 2 durch trockenadsorption aus gasen, die vorzugsweise a) keinen sauerstoff enthalten, b) geringe mengen sauerstoff enthalten (0,5 - 1 vol. %), c) sauerstoff im ueberschuss enthalten (1 - 20 vol. %)
DE19738593A1 (de) Verfahren zum Stabilisieren von Aschen oder Schlacken aus Anlagen der thermischen Abfallbehandlung
DE19740477A1 (de) Verfahren zum Verglasen von Reststoffen aus der Rauchgasreinigung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FICHTEL, ROLAND

17P Request for examination filed

Effective date: 19900731

17Q First examination report despatched

Effective date: 19910809

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SUCHERWIRTH, HERMANN, DR.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19951112