DE2744324A1 - Desulphurised flue gases neutralisation - by adding ammonia before feeding to water cooling tower - Google Patents

Desulphurised flue gases neutralisation - by adding ammonia before feeding to water cooling tower

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Publication number
DE2744324A1
DE2744324A1 DE2744324A DE2744324A DE2744324A1 DE 2744324 A1 DE2744324 A1 DE 2744324A1 DE 2744324 A DE2744324 A DE 2744324A DE 2744324 A DE2744324 A DE 2744324A DE 2744324 A1 DE2744324 A1 DE 2744324A1
Authority
DE
Germany
Prior art keywords
flue gases
cooling tower
neutralisation
water cooling
before feeding
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Withdrawn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
DE2744324A
Other languages
German (de)
Inventor
Heinrich Gresch
Heinz Hoelter
Heinrich Igelbuescher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2744324A priority Critical patent/DE2744324A1/en
Publication of DE2744324A1 publication Critical patent/DE2744324A1/en
Withdrawn legal-status Critical Current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
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound

Abstract

When flue gases from the desulphurisation plant of fossil fuel fired power stations are introduced for dilution into cooling towers of the wet type, the residual SO2 forms sulphuric acid and has destructive effects. This can be overcome by injecting ammonia into the tubular feed sections of the flue gases to neutralise them. The SO2 is oxidised to ammonium sulphite or ammonium sulphate and the cooling water is neutralised. Any pollution to the environment by the residual 10-20% SO2 is thus obviated.

Description

27U32427U324

Beschreibung und Erläuterung zur Patentanmeldung 'Verfahren zur Neutralisation von entschwefeitern Rauchgas, vorzugsweise in Kühltürmen'.Description and explanation of the patent application 'Process for the neutralization of desulfurizers Flue gas, preferably in cooling towers'.

Es ist in der Literatur und in mehreren Patentanmeldungen beschrieben worden, daß es zweckmäßig ist, das Rauchgas aus Possilkraftwerken, das durch eine Entschwefelungsanlage vorgereinigt wurde, in Kühltürme einzuleiten und mit den Kühlturmabdämpfen der Atmosphäre zu übergeben.It has been described in the literature and in several patent applications that it is useful is, the flue gas from Possil power plants, which has been pre-cleaned by a desulphurisation system, in Initiate cooling towers and dampen with the cooling tower to surrender to the atmosphere.

Bei Trockenkühltürmen ist dieses Verfahren gut machbar, da Entschwefelungsanlagen in der Segel zwischen 80 % - 90 % wirksam das SOo aus dem zu reinigenden Rauchgas abscheiden und die letzten 10 % - 20 % mit dem Vervielfältigungsvolumen der in Thermik begriffenen Abgase des Kühlturms in einem Verhältnis von etwa 1 : 20 bis 1 : 30 gut durchmischt und gut verteilt werden, in die höheren Luftschichten aufsteigen und diffundiert werden.With dry cooling towers, this process is easily feasible, as desulphurisation systems in the sails separate 80 % - 90 % effectively the SOo from the flue gas to be cleaned and the last 10% - 20 % with the multiplication volume of the thermal exhaust gases of the cooling tower in a ratio of about 1:20 to 1:30 should be well mixed and well distributed, ascending into the higher layers of air and being diffused.

Die Mehrzahl aller Kühltürme sind jedoch Naßkühltürme und werden in absehbarer Zeit soweit wie möglich auch aufgrund der günstigeren Preisgestaltung Naßkühltürme bleiben.The majority of all cooling towers, however, are wet cooling towers and will be in the foreseeable future as much as possible due to the cheaper pricing Wet cooling towers remain.

- 2 90981 6/0025- 2 90981 6/0025

Das Einleiten von teilentschwefelten Abgasen in Naßkühltürme ist jedoch problematisch.The introduction of partially desulphurized exhaust gases into wet cooling towers however, is problematic.

Der Restgehalt von SOp würde mit den nassen Kühlturmabdämpfen Schwefelsäure bilden, die verheerende Wirkungen bei der Kühlleistung durch Korrosin an den Maschinen verursachen.The residual SOp content would be steamed off with the wet cooling tower Form sulfuric acid, which has a devastating effect on the cooling capacity due to corrosin on the Machines cause.

Um dieses zu vermeiden und trotzdem Naßkühltürme verwenden zu können, in denen entschwefeltes Rauchgas direkt eingeführt wird oder in denen Rauchgasentschwefelungsanlagen integriert sind und somit das teilentschwefelte Gas in die Kühldampfmengen diffundieren, insbesondere im Bereich oberhalb der Wasserverteilung, wird erfindungsgemäß vorgeschlagen, in die rohrförmigen Einführungsstrecken der teilentschwefelten Rauchgase zur Neutralisation Ammoniak (NH^) einzublasen.To avoid this and still be able to use wet cooling towers in which desulphurized flue gas is introduced directly or in which flue gas desulphurisation systems are integrated and thus the partially desulphurized gas diffuses into the cooling steam, in particular in the area above the water distribution, it is proposed according to the invention, in the tubular Inlet sections of the partially desulphurized flue gases to neutralize ammonia (NH ^).

Durch diese erfindungsgemäße Verfahrenstechnik wird das SOp zu Ammoniumsulfit bzw. Ammoniumsulfat durch Aufoxidation gewandelt, und somit wirkt es in dem Bereich der nassen Rauchschwaden neutral, d. h. für die rückfließenden Tröpfchen durch Kondensation sogar noch positiv neutralisierend auf das Kühlwasser.This process technology according to the invention turns the SOp into ammonium sulfite or ammonium sulfate Oxidation converted, and thus it has a neutral effect in the area of the wet smoke plumes, i. H. for the returning droplets even through condensation still positively neutralizing on the cooling water.

9 0 9816/00259 0 9816/0025

Für die austretenden Gasinengen aus den; KolEkühlturm tritt für die Umwelt nicht ca. 1C % - 20 >ίι ii'.iGt-o0 Belastung auf, sondern gewandeltes ό0ο als /imrnon
(Düngemittel), das vollkommen umweltfreundlich der Atmosphäre übergeben werden kann.For the escaping gas quantities from the; Cooling tower does not affect the environment with approx. 1C% - 20> ίι ii'.iGt-o0, but changed ό0 ο as / imrnon
(Fertilizer) that can be released into the atmosphere in a completely environmentally friendly way.

Fat ent anspruchFat according to claim

909816/0025909816/0025

Claims (1)

27U32427U324 PatentanspruchClaim Verfahren zur Neutralisation von Naßkühldämpfen, die mit SO^-Rest-Belastungen aus Rauchgasentschwefelungsanlagen "beaufschlagt werden, dadurch gekennzeichnet, daß die in den Kühlturm diffundierenden Rauchgase mit Ammoniak neutralisiert werden.Process for the neutralization of wet cooling vapors, those with SO ^ residues from flue gas desulfurization systems "are acted upon, characterized in that the diffusing into the cooling tower Flue gases can be neutralized with ammonia. 9098 1 6/00259098 1 6/0025
DE2744324A 1977-10-01 1977-10-01 Desulphurised flue gases neutralisation - by adding ammonia before feeding to water cooling tower Withdrawn DE2744324A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2744324A DE2744324A1 (en) 1977-10-01 1977-10-01 Desulphurised flue gases neutralisation - by adding ammonia before feeding to water cooling tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2744324A DE2744324A1 (en) 1977-10-01 1977-10-01 Desulphurised flue gases neutralisation - by adding ammonia before feeding to water cooling tower

Publications (1)

Publication Number Publication Date
DE2744324A1 true DE2744324A1 (en) 1979-04-19

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ID=6020467

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2744324A Withdrawn DE2744324A1 (en) 1977-10-01 1977-10-01 Desulphurised flue gases neutralisation - by adding ammonia before feeding to water cooling tower

Country Status (1)

Country Link
DE (1) DE2744324A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211423A1 (en) * 1982-03-27 1983-09-29 Karrena GmbH, 4000 Düsseldorf METHOD FOR REDUCING THE RAIN OF ACID
DE3248567A1 (en) * 1982-12-30 1984-07-05 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for the purification of flue gases, preferably from coal power stations
DE3302910A1 (en) * 1983-01-28 1984-08-02 Julius Dr. 8000 München Kern Process for reducing the harmful actions of air impurities, in particular those of acidic nature
DE3316589A1 (en) * 1983-05-06 1984-11-08 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for desulphurisation of flue gases preferably for old power stations - introduction of the washed flue gases into the cooling tower or chimney
DE3326493A1 (en) * 1983-07-22 1985-01-31 Ekkehard Prof. Dr.-Ing. 4300 Essen Weber Purification of power station flue gases by alkali and/or alkaline earth-containing coolant liquids in cooling towers
US5273727A (en) * 1991-07-16 1993-12-28 Energy Conservation Partnership, Ltd. Flue gas purification and production of dry ammonium bisulfites and bisulfates
US5485947A (en) * 1992-07-20 1996-01-23 Ethicon, Inc. Linear stapling mechanism with cutting means

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211423A1 (en) * 1982-03-27 1983-09-29 Karrena GmbH, 4000 Düsseldorf METHOD FOR REDUCING THE RAIN OF ACID
DE3248567A1 (en) * 1982-12-30 1984-07-05 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for the purification of flue gases, preferably from coal power stations
DE3302910A1 (en) * 1983-01-28 1984-08-02 Julius Dr. 8000 München Kern Process for reducing the harmful actions of air impurities, in particular those of acidic nature
DE3316589A1 (en) * 1983-05-06 1984-11-08 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for desulphurisation of flue gases preferably for old power stations - introduction of the washed flue gases into the cooling tower or chimney
DE3326493A1 (en) * 1983-07-22 1985-01-31 Ekkehard Prof. Dr.-Ing. 4300 Essen Weber Purification of power station flue gases by alkali and/or alkaline earth-containing coolant liquids in cooling towers
US5273727A (en) * 1991-07-16 1993-12-28 Energy Conservation Partnership, Ltd. Flue gas purification and production of dry ammonium bisulfites and bisulfates
US5485947A (en) * 1992-07-20 1996-01-23 Ethicon, Inc. Linear stapling mechanism with cutting means

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