DE3545190C2 - - Google Patents

Info

Publication number
DE3545190C2
DE3545190C2 DE19853545190 DE3545190A DE3545190C2 DE 3545190 C2 DE3545190 C2 DE 3545190C2 DE 19853545190 DE19853545190 DE 19853545190 DE 3545190 A DE3545190 A DE 3545190A DE 3545190 C2 DE3545190 C2 DE 3545190C2
Authority
DE
Germany
Prior art keywords
ammonia
flue gas
vapors
thermal process
fuel boiler
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.)
Expired
Application number
DE19853545190
Other languages
German (de)
Other versions
DE3545190A1 (en
Inventor
Heinz Dipl.-Ing. Hoelter
Heinrich Dipl.-Ing. 4390 Gladbeck De Igelbuescher
Heinrich Ing.(Grad.) 4600 Dortmund De Gresch
Heribert Dipl.-Ing. 4390 Gladbeck De Dewert
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 DE19853545190 priority Critical patent/DE3545190A1/en
Priority to EP86905803A priority patent/EP0241496A1/en
Priority to PCT/EP1986/000572 priority patent/WO1987002269A1/en
Publication of DE3545190A1 publication Critical patent/DE3545190A1/en
Application granted granted Critical
Publication of DE3545190C2 publication Critical patent/DE3545190C2/de
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/06Treatment of sludge; Devices therefor by oxidation
    • 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
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/40Valorisation of by-products of wastewater, sewage or sludge processing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Verwertungsprodukten bei der Rauchgasentschwefelung, bei dem als Waschflüssigkeit mit Ammoniumverbindungen belastete Fluß- und Industriewässer einge­ setzt werden und ein Gemisch aus Rohgips und Zuschlag­ stoffen anfällt, das einem thermischen Prozeß unterworfen wird.The invention relates to a method for producing Recycling products for flue gas desulfurization, at the river and industrial waters contaminated with ammonium compounds as washing liquid be set and a mixture of raw gypsum and aggregate substances that are subjected to a thermal process becomes.

Es ist bekannt, daß hinter Rauchgas- Entschwefelungsanla­ gen eine gipsartige Masse anfällt und daß hinter Kraftwer­ ken Asche anfällt. Asche und Gips sowie weitere Zuschlag­ stoffe bilden vielfach die Rohmaterialbasis für ein daraus herzustellendes Endprodukt, das in der Zementindustrie und für den Berg- und Tunnelbau verwendet werden kann.It is known that behind flue gas desulfurization against a plaster-like mass and that behind Kraftwer no ash is produced. Ash and plaster as well as additional surcharge In many cases, materials form the raw material basis for one of them End product to be manufactured in the cement industry and can be used for mining and tunneling.

Es ist auch möglich, Fluß- oder Industriewässer für die Rauchgasreinigung zu nutzen, die mit Ammoniumverbindungen belastet sind. Wenn dann das dabei anfallende Gemisch aus Rohgips und Zuschlagstoffen einem thermischen Prozeß unter­ worfen wird, verdampft das die Ammoniumverbindungen enthal­ tende Wasser und belastet die Umwelt. Bisher mußten daher die dabei entstehenden Dämpfe und Rauchgas-Entschwefelungsanlagen wieder zugeführt werden, um somit eine umweltunschädliche Reinigung zu erzielen.It is also possible to use river or industrial water for the Use flue gas cleaning with ammonium compounds are burdened. Then when the resulting mixture from Raw gypsum and aggregates undergo a thermal process is thrown, that evaporates the ammonium compounds water and pollutes the environment. So far, therefore vapors and flue gas desulphurization plants can be fed back in order to be environmentally harmless To achieve cleaning.

Diese bekannte Arbeitsweise hat jedoch den Nachteil, daß sich die Ammoniumverbindungen in dem Waschwasser immer mehr anreichern, so daß bei kontinuierlicher Durchführung des Verfahrens Teilmengen aus dem Waschwasser herausgenommen und einer Abwasserbehandlung zugeführt werden müssen. Eine solche Arbeitsweise ist aber technisch aufwendig und kost­ spielig.However, this known method of working has the disadvantage that the ammonium compounds in the wash water more and more Enrich so that with continuous implementation of the Process portions removed from the wash water and have to be treated with waste water. A  such a procedure is technically complex and expensive playful.

Aufgabe der Erfindung ist es daher, die bei der Durchfüh­ rung des eingangs genannten Verfahrens im Waschwasser ent­ haltenen Ammoniumverbindungen auf technisch einfache und umweltfreundliche Weise zu beseitigen.The object of the invention is therefore to implement tion of the process mentioned in the wash water ent keeping ammonium compounds on technically simple and eliminate environmentally friendly way.

Es wurde nun gefunden, daß diese Aufgabe erfindungsgemäß dadurch gelöst werden kann, daß bei dem Verfahren der ein­ gangs genannten Art die die Ammoniumverbindungen enthaltenden Dämpfe, die beim thermischen Prozeß anfallen, dem Flammenbe­ reich des Brennstoffkessels zugeführt werden. Dabei werden die in den Dämpfen enthaltenen gasförmigen Ammoniumverbin­ dungen, wie Ammoniak, thermisch zersetzt.It has now been found that this object is achieved according to the invention can be solved in that in the method of a initially mentioned type containing the ammonium compounds Vapors that arise during the thermal process, the flame be fed richly of the fuel boiler. In doing so the gaseous ammonium compound contained in the vapors thermal decomposition, such as ammonia.

Aus den DE-OS 31 22 423 und 30 21 875 zwar bereits Verfahren zur Beseitigung von Ammoniak aus Abgasen bekannt, bei denen die Ammoniak und dessen Verbindungen enthaltenden Abgase einer Brennerflamme zugeführt werden, wobei sich das Ammoniak und dessen Verbindungen bei den dort herrschenden hohen Temperaturen zersetzen, Verwertungsprodukte aus der Rauchgas-Entschwefelung zu gewinnen und dabei Ammoniumver­ bindungen enthaltende Industriewässer einzusetzen, aus denen der Ammoniak und seine Verbindungen umweltfreundlich beseitigt werden müssen, sind darin jedoch nicht angespro­ chen.From DE-OS 31 22 423 and 30 21 875 already Processes for removing ammonia from exhaust gases known in which the ammonia and its compounds containing Exhaust gases are fed to a burner flame, the Ammonia and its compounds among those who rule there decompose at high temperatures, recovery products from the Flue gas desulfurization to win and ammonium ver to use industrial water containing bonds which the ammonia and its compounds are environmentally friendly must be eliminated, however, are not addressed in it chen.

Gemäß einer bevorzugten Ausgestaltung der Erfindung wird das für die Rauchgas-Entschwefelung verwendete, Ammonium­ verbindungen enthaltende Waschwasser mit Alkali- oder Erd­ alkalilösungen versetzt, belüftet und die ammoniakhaltigen Dämpfen werden mit Luft ausgetrieben und dem Flammenbereich des Brennstoffkessels wieder zugeführt. Dadurch ist es möglich, Ammoniak aus den Ammoniumsalzen auszutreiben und das Waschwasser ohne Ammoniakbelastung für die Rauchgas- Entschwefelung wieder nutzbar zu machen, während das ausge­ triebene Ammoniak im Brenner thermisch zersetzt wird.According to a preferred embodiment of the invention the ammonium used for flue gas desulfurization washing water containing compounds with alkali or earth alkali solutions added, aerated and the ammonia-containing Vapors are expelled with air and the flame area of the fuel boiler again. That’s it  possible to drive off ammonia from the ammonium salts and the wash water without ammonia pollution for the flue gas To make desulphurization usable again while that driven ammonia is thermally decomposed in the burner.

Claims (2)

1. Verfahren zur Herstellung von Verwertungsprodukten bei der Rauchgasentschwefelung, wobei als Waschflüssigkeit mit Ammoniumverbindungen belastete Fluß- und Industriewässer eingesetzt werden und ein Gemisch aus Rohgips und Zuschlagstoffen anfällt, das einem thermischen Prozeß unterworfen wird, dadurch gekennzeichnet, daß die Ammoniak enthaltenden Abdämpfe des thermischen Prozesses dem Flam­ menbereich des Brennstoffkessels zugeführt werden.1. A process for the production of recovery products in flue gas desulphurization, the river and industrial waters contaminated with ammonium compounds being used as washing liquid and a mixture of raw gypsum and aggregates being obtained which is subjected to a thermal process, characterized in that the ammonia-containing vapors of the thermal process be fed to the flame area of the fuel boiler. 2. Verfahren nach dem Oberbegriff von Anspruch 1, dadurch gekennzeichnet, daß das Waschwasser mit Alkali- oder Erdalkalilösungen versetzt und belüftet wird und daß die ausgetriebenen Ammoniak enthaltenden Dämpfe dem Flammenbereich des Brennstoffkessels zuge­ führt werden.2. The method according to the preamble of claim 1, characterized in that the washing water mixed with alkali or alkaline earth solutions and is ventilated and that the expelled vapors containing ammonia the flame area of the fuel boiler leads.
DE19853545190 1985-10-11 1985-12-20 Process for producing utilisable products downstream of a flue-gas desulphurisation Granted DE3545190A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19853545190 DE3545190A1 (en) 1985-12-20 1985-12-20 Process for producing utilisable products downstream of a flue-gas desulphurisation
EP86905803A EP0241496A1 (en) 1985-10-11 1986-10-08 Process for simultaneous extraction of so 2? and no x? contained in waste gases
PCT/EP1986/000572 WO1987002269A1 (en) 1985-10-11 1986-10-08 Process for simultaneous extraction of so2 and nox contained in waste gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853545190 DE3545190A1 (en) 1985-12-20 1985-12-20 Process for producing utilisable products downstream of a flue-gas desulphurisation

Publications (2)

Publication Number Publication Date
DE3545190A1 DE3545190A1 (en) 1987-06-25
DE3545190C2 true DE3545190C2 (en) 1989-05-11

Family

ID=6289001

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853545190 Granted DE3545190A1 (en) 1985-10-11 1985-12-20 Process for producing utilisable products downstream of a flue-gas desulphurisation

Country Status (1)

Country Link
DE (1) DE3545190A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645835B4 (en) * 1996-11-07 2006-02-16 GFR Gesellschaft für die Aufbereitung und Verwertung von Reststoffen mbH Process for the provision of ammonia gas and / or ammonia water for exhaust gas purification

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021875C2 (en) * 1980-06-11 1985-04-25 L. & C. Steinmüller GmbH, 5270 Gummersbach Method for applying the selective reduction of nitrogen oxides from flame combustion with the aid of ammonia
DE3122423A1 (en) * 1981-06-05 1982-12-30 Linde Ag, 6200 Wiesbaden Process for removing ammonia from exhaust gases
DE3407702A1 (en) * 1984-03-02 1985-09-12 Knauf Westdeutsche Gips Process and apparatus for removing ammonia and ammonium salts from coal-fired power station recyclings
CS273316B2 (en) * 1983-08-19 1991-03-12 Knauf Westdeutsche Gipsw Geb Method of dry, powder-like light ash derivative production and equipment for realization of this method

Also Published As

Publication number Publication date
DE3545190A1 (en) 1987-06-25

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee