DE3226757A1 - Dry chemisorption for binding pollutants such as SO2, HCl, HF and similar flue gas congeners, preferably downstream of fossil fuel power stations, refuse incineration plants, pyrolysis plants and similar flue gas producers - Google Patents

Dry chemisorption for binding pollutants such as SO2, HCl, HF and similar flue gas congeners, preferably downstream of fossil fuel power stations, refuse incineration plants, pyrolysis plants and similar flue gas producers

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Publication number
DE3226757A1
DE3226757A1 DE19823226757 DE3226757A DE3226757A1 DE 3226757 A1 DE3226757 A1 DE 3226757A1 DE 19823226757 DE19823226757 DE 19823226757 DE 3226757 A DE3226757 A DE 3226757A DE 3226757 A1 DE3226757 A1 DE 3226757A1
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Germany
Prior art keywords
flue gas
dry
plants
similar flue
chemisorption
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
DE19823226757
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German (de)
Inventor
Heribert Dipl.-Ing. 4390 Gladbeck Dewert
Heinrich Ing.(grad.) 4600 Dortmund Gresch
Heinz Dipl.-Ing. Hölter
Heinrich Dipl.-Ing. 4390 Gladbeck Igelbüscher
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to DE19823226757 priority Critical patent/DE3226757A1/en
Publication of DE3226757A1 publication Critical patent/DE3226757A1/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—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
    • 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
    • B01D53/508—Sulfur oxides by treating the gases with solids

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

In the purification of flue gases by dry chemisorption using alkali metal compounds or alkaline earth metal compounds, the degree of adsorption is increased by admixing monocarboxylic or polycarboxylic acids and/or salts thereof to the alkali metal compounds or alkaline earth metal compounds. A further improvement is achieved by additionally injecting this mixture in the dissolved or dry state into the combustion chamber or by adding it to the fuel.

Description

Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application

Trockene Chemisorption zur Bindung von Schadstoffen wie SO2, HC1, HF und ähnlichen Rauchgasbegleitern, vorzugsweise hinter Fossilkraftwerken, Müllverbrennungsanlagen, Pyrolyseanlagen und ähnlichen Rauchgaserzeugern Es ist bekannt, in den Feuerungsraum Erdalkaliverbindungen, vorzugsweise fein aufgemahlen, einzublasen oder diese Erdalkaliverbindungen dem Brennstoff beizumengen und in den Feuerungsraum aufzugeben.Dry chemisorption to bind pollutants such as SO2, HC1, HF and similar flue gas companions, preferably behind fossil power plants, waste incineration plants, Pyrolysis systems and similar smoke gas generators It is known in the furnace Alkaline earth compounds, preferably finely ground, to be blown in, or these alkaline earth compounds add to the fuel and add to the combustion chamber.

Weiterhin ist bekannt, in Kontaktstrecken oder Wirbelreaktoren Erdalkaliverbindungen mit dem zu entschwefelndem Rauchgas in Kontakt zu bringen.It is also known to use alkaline earth compounds in contact sections or vortex reactors to bring into contact with the flue gas to be desulphurized.

Die Chemisorption ist trotz mehrfach stöchiometrischer Zugabe bei den Einzelverfahren kaum über 50 % SO2 -Bindung zu erzielen.The chemisorption is in spite of the multiple stoichiometric addition the individual process can hardly achieve more than 50% SO2 binding.

Weiterhin wird vielfach das aufgemahlene Erdalkali mit einer Flüssigkeit angereichert, um es sprühtechnisch in einem trockenen Verfahren zuzugeben, so daß die gegebene Temperatur unmittelbar nach der Chemisorption oder auch während der Chemisorption das Wasser verdampft und der nachgeschaltete Trockenabscheider, z.B. Elektro - oder Gewebefilter das Material abscheidet.Furthermore, the ground alkaline earth is often mixed with a liquid enriched to add it by spraying in a dry process so that the given temperature immediately after the chemisorption or during the Chemisorption evaporates the water and the downstream dry separator, e.g. Electro - or fabric filter separates the material.

Bei der trockenen sog. Sprühsorption ist die Gefahr der Anbackungen, vorzugsweise durch Carbonatbildung, gegeben.With dry so-called spray sorption, there is a risk of caking, preferably by carbonate formation.

Um die größtmögliche Chemisorption zu erzielen und um gleichzeitig auch Anbackungen zu vermeiden, wird erfindungsgemäß vorgeschlagen, den Erdalkaliverbindungen ein - und/oder mehrbasische Carbonsäuren und/oder deren Salze zuzumengen, wobei diese gemischten Alkali - bzw. Erdalkaliverbindungen mit den Carbonsäuren oder deren Salze dem Brennstoff direkt zugemischt werden bzw. dem Feuerungsraum zugeblasen und/oder den nachgeschalteten Flächen des Feuerungsraumes bzw. im Bereich des Wärmetauschers zugeführt werden und/oder nachgeschalteten Kontaktreaktoren oder Kontaktstrecken, die einem Abscheider vorgeschaltet sind, wie Elektrofilter, Gewebefilter und dergleichen zugefördert werden.To achieve the greatest possible chemisorption and at the same time According to the invention, it is also proposed to avoid caking, the alkaline earth compounds to add monobasic and / or polybasic carboxylic acids and / or their salts, with these mixed alkali or alkaline earth compounds with the carboxylic acids or their Salts are added directly to the fuel or blown into the combustion chamber and / or the downstream surfaces of the combustion chamber or in the area of the heat exchanger are supplied and / or downstream contact reactors or contact sections, upstream of a separator are, like electrostatic precipitators, fabric filters and the like are promoted.

Es wurde gefunden, daß dadurch 1. die Chemisorption sich wesentlich verbessert und 2. Anbackungen an den Grenzflächen im Kesselraum oder Wärmetauscherflächen bzw. in den Kontakt-und/oder Absorberflächen bzw. Reaktoren weitgehend vermieden werden, so daß das Verfahren a) eine höhere Verfügbarkeit ausweist und b) wesentlich preiswerter ist, da die einzusetzenden z.B. Kalkmengen stark reduziert werden können.It has been found that this 1. The chemisorption is essential improved and 2. caking at the interfaces in the boiler room or heat exchanger surfaces or largely avoided in the contact and / or absorber surfaces or reactors so that the process shows a) a higher availability and b) substantially is cheaper, as the amount of lime to be used, for example, can be greatly reduced.

Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen beschriebenen Ausbildungsformen beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, die Chemisorptionsmittel mit ein - und/oder mehrbasischen Carbonsäuren und/oder deren Salze zu vermengen, so daß eine trockene Chemisorption mit nachgeschalteten Trockenabscheidern gewährleistet werden kann.Of course, the invention is not limited to the above in detail The forms of training described are limited, but there are numerous changes possible, but without deviating from the basic idea, the chemisorbents to mix with mono- and / or polybasic carboxylic acids and / or their salts, so that a dry chemisorption with downstream dry separators is guaranteed can be.

Qatentansprüche : Qatent claims:

Claims (1)

Patentansprüche Anspruch 1 Verfahren zur Verbesserung der trockenen Chemisorption dadurch gekennzeichnet, daß den trockenen Chemisorptionsmitteln ein- und/oder mehrbasische Carbonsäuren und/oder deren Salze zugemischt werden.Claims claim 1 method for improving the dry Chemisorption characterized in that the dry chemisorbents one and / or polybasic carboxylic acids and / or their salts are admixed. Anspruch 2 Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß das Zumischen total trocken oder durch Sprüheffekte dem trockenen Chemisorptionsmittel zugegeben wird.Claim 2 method according to claim 1, characterized in that the Mix completely dry or through spray effects to the dry chemisorbent is admitted. Anspruch 3 Verfahren nach Anspruch 1 und 2 dadurch gekennzeichnet, daß die Alkali - oder Erdalkalisalze der ein - oder mehrbasischen Carbonsäuren allein direkt in - oder nach dem Feuerungsraum im Wasser gelöst oder trocken eingeblasen, bzw. mit dem Brennstoff gemischt eingesetzt werden.Claim 3, method according to claims 1 and 2, characterized in that that the alkali or alkaline earth salts of the mono- or polybasic carboxylic acids alone dissolved in water or blown dry directly in or after the combustion chamber, or mixed with the fuel.
DE19823226757 1982-07-17 1982-07-17 Dry chemisorption for binding pollutants such as SO2, HCl, HF and similar flue gas congeners, preferably downstream of fossil fuel power stations, refuse incineration plants, pyrolysis plants and similar flue gas producers Ceased DE3226757A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823226757 DE3226757A1 (en) 1982-07-17 1982-07-17 Dry chemisorption for binding pollutants such as SO2, HCl, HF and similar flue gas congeners, preferably downstream of fossil fuel power stations, refuse incineration plants, pyrolysis plants and similar flue gas producers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823226757 DE3226757A1 (en) 1982-07-17 1982-07-17 Dry chemisorption for binding pollutants such as SO2, HCl, HF and similar flue gas congeners, preferably downstream of fossil fuel power stations, refuse incineration plants, pyrolysis plants and similar flue gas producers

Publications (1)

Publication Number Publication Date
DE3226757A1 true DE3226757A1 (en) 1984-01-19

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ID=6168643

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DE19823226757 Ceased DE3226757A1 (en) 1982-07-17 1982-07-17 Dry chemisorption for binding pollutants such as SO2, HCl, HF and similar flue gas congeners, preferably downstream of fossil fuel power stations, refuse incineration plants, pyrolysis plants and similar flue gas producers

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Country Link
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232081A1 (en) * 1982-08-28 1984-03-01 Rheinisch-Westfälisches Elektrizitätswerk AG, 4300 Essen ABSORBENT FOR DRY REMOVAL OF SULFUR DIOXIDE FROM SMOKE GASES
DE3612932A1 (en) * 1986-04-17 1987-10-22 Hoelter Heinz Filter compositions for air purification apparatuses
DE3615051A1 (en) * 1986-05-03 1988-02-18 Hoelter Heinz Process for the manufacture of a bactericidal chemisorption ceiling preferably for health clinics, hospitals, old peoples' homes and similar places of residence
DE3728423A1 (en) * 1987-08-26 1989-03-09 Hoelter Heinz Filter for eliminating bacteria, viruses and air pollutants, preferably for occupied spaces
DE4204795A1 (en) * 1991-02-19 1992-08-20 Intevep Sa METHOD FOR REMOVING DISCHARGES OR THE LIKE FROM THE FUEL OF A FUEL
FR2690855A1 (en) * 1992-05-05 1993-11-12 Discovery Chemicals Inc Adsorbents for the removal of HCl and process for their production and use
US6379639B2 (en) * 1998-08-17 2002-04-30 Jürgen Labuschewski Process for purification of flue gas

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705497A1 (en) * 1977-02-10 1978-08-17 Heinz Hoelter Waste gas purificn. - by contacting with porous solid bodies impregnated with aq. caustic soda soln. and/or carboxylic acids

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705497A1 (en) * 1977-02-10 1978-08-17 Heinz Hoelter Waste gas purificn. - by contacting with porous solid bodies impregnated with aq. caustic soda soln. and/or carboxylic acids

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232081A1 (en) * 1982-08-28 1984-03-01 Rheinisch-Westfälisches Elektrizitätswerk AG, 4300 Essen ABSORBENT FOR DRY REMOVAL OF SULFUR DIOXIDE FROM SMOKE GASES
DE3612932A1 (en) * 1986-04-17 1987-10-22 Hoelter Heinz Filter compositions for air purification apparatuses
DE3615051A1 (en) * 1986-05-03 1988-02-18 Hoelter Heinz Process for the manufacture of a bactericidal chemisorption ceiling preferably for health clinics, hospitals, old peoples' homes and similar places of residence
DE3728423A1 (en) * 1987-08-26 1989-03-09 Hoelter Heinz Filter for eliminating bacteria, viruses and air pollutants, preferably for occupied spaces
DE4204795A1 (en) * 1991-02-19 1992-08-20 Intevep Sa METHOD FOR REMOVING DISCHARGES OR THE LIKE FROM THE FUEL OF A FUEL
DE4204795C2 (en) * 1991-02-19 1999-07-08 Intevep Sa Method for removing discharges or the like from exhaust gases of a fuel
FR2690855A1 (en) * 1992-05-05 1993-11-12 Discovery Chemicals Inc Adsorbents for the removal of HCl and process for their production and use
EP0639112A1 (en) * 1992-05-05 1995-02-22 Discovery Chemicals, Inc. Hcl adsorbent and method for making and using same
EP0639112A4 (en) * 1992-05-05 1995-06-14 Discovery Chemicals Inc Hcl adsorbent and method for making and using same.
US5505926A (en) * 1992-05-05 1996-04-09 Discovery Chemicals, Inc. HCL adsorbent and method for making and using same
US5595954A (en) * 1992-05-05 1997-01-21 Discovery Chemicals, Inc. Method for making an HCL adsorbent
US6379639B2 (en) * 1998-08-17 2002-04-30 Jürgen Labuschewski Process for purification of flue gas

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