DE3530277A1 - Simultaneous SO2 and NOx separation preferably in fluidized-bed combustion plants - Google Patents

Simultaneous SO2 and NOx separation preferably in fluidized-bed combustion plants

Info

Publication number
DE3530277A1
DE3530277A1 DE19853530277 DE3530277A DE3530277A1 DE 3530277 A1 DE3530277 A1 DE 3530277A1 DE 19853530277 DE19853530277 DE 19853530277 DE 3530277 A DE3530277 A DE 3530277A DE 3530277 A1 DE3530277 A1 DE 3530277A1
Authority
DE
Germany
Prior art keywords
lime
simultaneous
ammonia
combustion
nox
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
DE19853530277
Other languages
German (de)
Inventor
Heinz Dipl Ing Hoelter
Heinrich Dipl Ing Igelbuescher
Heinrich Ing Grad Gresch
Heribert Dipl Ing 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 DE19853530277 priority Critical patent/DE3530277A1/en
Publication of DE3530277A1 publication Critical patent/DE3530277A1/en
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • 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
    • B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/10—Treating solid fuels to improve their combustion by using additives
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

The invention relates to a process for the simultaneous SO2 and NOx separation from the flue gases of fossil-fuel fired combustion boilers, preferably fluidized-bed combustion plants. It has been found that, by the addition of lime and ammonia salt to the fuel mixture during combustion, SO2 is separated off via binding to lime and NOx is converted to elemental nitrogen as a result of reduction by ammonia. In order to prevent the lime being able to react with the ammonia salts (specifically in the case of wet coal) prior to use in a combustion chamber and NH3 being liberated, according to the invention, pitch, asphalt, slack waxes etc. are added to the fuel mixture and are pressed to form fuel pieces in the form of briquettes, egg coal etc., in order to insulate the added salts and enable them to react only in the combustion chamber.

Description

Es wurde gefunden, daß durch den Zusatz von Kalk und Ammoniaksalz zur Brennstoffmischung während der Verbrennung SO2 über die Bindung an Kalk abgeschieden und NO x durch Reduzierung mittels Ammoniak zu elementaren Stickstoff gewandelt wird.It was found that by adding lime and ammonia salt to the fuel mixture during the combustion, SO 2 is deposited via the binding to lime and NO x is converted to elemental nitrogen by reduction using ammonia.

Um zu verhindern, daß der Kalk mit den Ammonsalzen (speziell bei feuchter Kohle) vor dem Einsatz in eine Brennkammer reagieren und NH3 freigesetzt wird, werden dem Brennstoffgemisch Pech, Asphalt, Paraffin­ gatsche usw. zugesetzt und zu Briketts, Eierkohlen usw. gepreßt, um die zugesetzten Salze zu isolieren und sie erst in der Brennkammer zur Reaktion kommen zu lassen.To prevent the lime from reacting with the ammonium salts (especially with moist coal) in a combustion chamber before use and NH 3 is released, pitch, asphalt, paraffin gasses etc. are added to the fuel mixture and pressed into briquettes, egg coals etc. to isolate the added salts and to allow them to react only in the combustion chamber.

Claims (1)

Verfahren zur Abscheidung von SO2 und NO x , dadurch gekennzeichnet, daß Kalk und Ammoniumsalze bzw. Ammoniumverbindungen mit dem Brennstoff gemischt und/oder in das Feuerbett eingeblasen zur Abscheidung von SO2 und NO x Anwendung finden. Um zu verhindern, daß der Kalk mit den Ammonsalzen (speziell bei feuchter Kohle) vor dem Einsatz in eine Brennkammer reagieren und NH3 freigesetzt wird, werden dem Brennstoffgemisch Pech, Asphalt, Paraffingatsche usw. zugesetzt und zu Briketts, Eierkohlen usw. gepreßt, um die zugesetzten Salze zu isolieren und sie erst in der Brennkammer zur Reaktion kommen zu lassen.Process for the separation of SO 2 and NO x , characterized in that lime and ammonium salts or ammonium compounds are mixed with the fuel and / or blown into the fire bed for the separation of SO 2 and NO x . To prevent the lime from reacting with the ammonium salts (especially with moist coal) before use in a combustion chamber and NH 3 being released, pitch, asphalt, paraffin wax, etc. are added to the fuel mixture and pressed into briquettes, egg coals, etc. isolate the added salts and allow them to react only in the combustion chamber.
DE19853530277 1985-08-24 1985-08-24 Simultaneous SO2 and NOx separation preferably in fluidized-bed combustion plants Ceased DE3530277A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853530277 DE3530277A1 (en) 1985-08-24 1985-08-24 Simultaneous SO2 and NOx separation preferably in fluidized-bed combustion plants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853530277 DE3530277A1 (en) 1985-08-24 1985-08-24 Simultaneous SO2 and NOx separation preferably in fluidized-bed combustion plants

Publications (1)

Publication Number Publication Date
DE3530277A1 true DE3530277A1 (en) 1987-02-26

Family

ID=6279264

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853530277 Ceased DE3530277A1 (en) 1985-08-24 1985-08-24 Simultaneous SO2 and NOx separation preferably in fluidized-bed combustion plants

Country Status (1)

Country Link
DE (1) DE3530277A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2227024A (en) * 1989-01-12 1990-07-18 Coal Ind Coal briquetting process
EP0423417A1 (en) * 1989-09-15 1991-04-24 SAT Chemie G.m.b.H. Process for the selective, non-catalytic reduction of the emissions from oil-fired boiler plants
EP0426978A1 (en) * 1989-09-15 1991-05-15 ERC Emissions-Reduzierungs-Concepte GmbH Process for the selective, non-catalytic reduction of the emissions from oil fired boiler plants

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192652A (en) * 1977-12-27 1980-03-11 Atlantic Richfield Company Process for preparing sulfur-containing coal or lignite for combustion having low SO2 emissions
DE3329342A1 (en) * 1983-08-13 1985-02-21 L. & C. Steinmüller GmbH, 5270 Gummersbach Treatment process for flue gases from a steam generation plant having a plurality of boiler units and a slag tap fired furnace assigned to each boiler unit
DD224613A5 (en) * 1983-09-26 1985-07-10 Kiskun Mezogaz Termeloes COMBUSTION ADDITIVE ADDITIVE COMPOSITION FOR CLEANING HEATING DEVICES, FIREPLACES, SMOKE COUNTERS AND HEAT GENERATORS
DE3407689A1 (en) * 1984-03-02 1985-09-12 Steag Ag, 4300 Essen METHOD FOR NO (ARROW DOWN) X (ARROW DOWN) REDUCTION IN FLUID BURNING FIREPLACES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192652A (en) * 1977-12-27 1980-03-11 Atlantic Richfield Company Process for preparing sulfur-containing coal or lignite for combustion having low SO2 emissions
DE3329342A1 (en) * 1983-08-13 1985-02-21 L. & C. Steinmüller GmbH, 5270 Gummersbach Treatment process for flue gases from a steam generation plant having a plurality of boiler units and a slag tap fired furnace assigned to each boiler unit
DD224613A5 (en) * 1983-09-26 1985-07-10 Kiskun Mezogaz Termeloes COMBUSTION ADDITIVE ADDITIVE COMPOSITION FOR CLEANING HEATING DEVICES, FIREPLACES, SMOKE COUNTERS AND HEAT GENERATORS
DE3407689A1 (en) * 1984-03-02 1985-09-12 Steag Ag, 4300 Essen METHOD FOR NO (ARROW DOWN) X (ARROW DOWN) REDUCTION IN FLUID BURNING FIREPLACES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2227024A (en) * 1989-01-12 1990-07-18 Coal Ind Coal briquetting process
GB2227024B (en) * 1989-01-12 1992-08-19 Coal Ind Coal briquetting process
EP0423417A1 (en) * 1989-09-15 1991-04-24 SAT Chemie G.m.b.H. Process for the selective, non-catalytic reduction of the emissions from oil-fired boiler plants
EP0426978A1 (en) * 1989-09-15 1991-05-15 ERC Emissions-Reduzierungs-Concepte GmbH Process for the selective, non-catalytic reduction of the emissions from oil fired boiler plants

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
8131 Rejection