EP0158587A2 - Procédé d'abaissement l'émission de polluants dans des unités de combustion - Google Patents

Procédé d'abaissement l'émission de polluants dans des unités de combustion Download PDF

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Publication number
EP0158587A2
EP0158587A2 EP85730045A EP85730045A EP0158587A2 EP 0158587 A2 EP0158587 A2 EP 0158587A2 EP 85730045 A EP85730045 A EP 85730045A EP 85730045 A EP85730045 A EP 85730045A EP 0158587 A2 EP0158587 A2 EP 0158587A2
Authority
EP
European Patent Office
Prior art keywords
coal
additive
added
suspension
sulfur
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.)
Granted
Application number
EP85730045A
Other languages
German (de)
English (en)
Other versions
EP0158587A3 (en
EP0158587B1 (fr
Inventor
Heinz Dr.-Ing. Gaessler
Helmut Dipl.-Phys. Landgraf
Klaus-Dieter Dipl.-Ing. Rennert
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.)
Vodafone GmbH
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
L&C Steinmueller GmbH
Mannesmann AG
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=25741428&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0158587(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by L&C Steinmueller GmbH, Mannesmann AG filed Critical L&C Steinmueller GmbH
Publication of EP0158587A2 publication Critical patent/EP0158587A2/fr
Publication of EP0158587A3 publication Critical patent/EP0158587A3/de
Application granted granted Critical
Publication of EP0158587B1 publication Critical patent/EP0158587B1/fr
Expired legal-status Critical Current

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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
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
    • C10L1/326—Coal-water suspensions

Definitions

  • the invention relates to a method for reducing pollutant emissions, in particular for desulfurization, in the combustion of coal, in particular hard coal, which as a coal / water suspension over long distances in a pipeline to a combustion system, e.g. to a power plant that was transported.
  • WO 83/00 500 discloses a coal fuel in the form of a highly concentrated coal / water suspension (60-80% by weight of coal) which is directly suitable for firing in the burners of a furnace.
  • a suspension is pumpable, but its high viscosity is a technical obstacle to long-distance transportation in a pipeline. This problem is not dealt with in the cited document.
  • the object of the invention is therefore to provide a method which, with as little effort as possible, leads to a reduction in pollutant emissions during the combustion of sulfur-containing coal, in particular hard coal, which is transported in the form of a coal / water suspension in a pipeline to the furnace.
  • coal is fed to the burner of the firing system in the form of a coal / water suspension with at least 55% by weight of coal content
  • this suspension can be burned immediately without the need for prior separation of the water content.
  • the water content in turn leads to a significant reduction in the peak temperatures during combustion compared to dry coal dust combustion. This significantly limits the formation of nitrogen oxides.
  • the lower combustion temperatures and the liquid-like atomization of the suspension create the prerequisite that oxidized sulfur can be chemically bound by the additives added to the suspension during the combustion, so that the SO 2 content remaining in the flue gas is decisively reduced.
  • limestone which has advantageously been milled to a grain size of less than 90 ⁇ m, or calcium hydroxide (Ca (OH) 2 ) can be added as additives.
  • Calcium salts are also used with particular advantage as additives, in particular those which lead to a reduction in the viscosity of the coal suspension (e.g. calcium lignin sulfate) or which reduce corrosion in steel pipelines.
  • these additives are not only effective in terms of pollutant emissions during combustion, but also have advantages for pipeline transport. This presupposes that they are added at least during the pipeline transport, but advantageously before the transport. In the latter case, this can e.g. happen during the grinding of the coal in the preparation of the suspension, in which case there is even no need for a special mixing unit. Of course, it is also possible to add the additive just before the burner.
  • the degree of concentration of the suspension with at least 55% by weight of coal does not necessarily have to be so high during the pipeline transport; it is also possible to initially transport the coal in a coarser grain and with a lower degree of concentration and to provide additional preparation before combustion, the coal being ground more finely and part of the water being separated from the suspension.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Incineration Of Waste (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Treating Waste Gases (AREA)
EP85730045A 1984-04-10 1985-03-28 Procédé d'abaissement l'émission de polluants dans des unités de combustion Expired EP0158587B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19843413831 DE3413831A1 (de) 1984-04-10 1984-04-10 Verfahren zur verminderung der schadstoffemission in feuerungsanlagen
DE3413831 1984-04-10
CN85101468A CN85101468B (zh) 1984-04-10 1985-04-01 减少燃烧设备中有害物质放射的方法

Publications (3)

Publication Number Publication Date
EP0158587A2 true EP0158587A2 (fr) 1985-10-16
EP0158587A3 EP0158587A3 (en) 1986-02-05
EP0158587B1 EP0158587B1 (fr) 1987-09-09

Family

ID=25741428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85730045A Expired EP0158587B1 (fr) 1984-04-10 1985-03-28 Procédé d'abaissement l'émission de polluants dans des unités de combustion

Country Status (5)

Country Link
EP (1) EP0158587B1 (fr)
CN (1) CN85101468B (fr)
DE (2) DE3413831A1 (fr)
IN (1) IN164291B (fr)
SU (1) SU1403995A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3804834A1 (de) * 1987-02-17 1988-08-25 Intevep Sa Verfahren zum herstellen bzw. verbrennen eines brennstoffes sowie kohlenwasserstoff-brennstoff dafuer
EP0325309A1 (fr) * 1988-01-21 1989-07-26 SNAMPROGETTI S.p.A. Méthode de préparation d'une suspension aqueuse à haute concentration en solides

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421313C2 (de) * 1994-06-17 1996-08-14 Lausitzer Braunkohle Ag Additiv zur Reduzierung der Schadstoffbelastung der Luft bei der Verbrennung von Braunkohle
CA2968816C (fr) * 2005-03-17 2019-12-03 Nox Ii, Ltd. Reduction des emissions de mercure emanant de la combustion de charbon

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235860A1 (fr) * 1973-07-05 1975-01-31 Marathon Oil Co
WO1985000377A1 (fr) * 1983-07-14 1985-01-31 Ab Carbogel Composition et procede de capture du soufre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235860A1 (fr) * 1973-07-05 1975-01-31 Marathon Oil Co
WO1985000377A1 (fr) * 1983-07-14 1985-01-31 Ab Carbogel Composition et procede de capture du soufre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3804834A1 (de) * 1987-02-17 1988-08-25 Intevep Sa Verfahren zum herstellen bzw. verbrennen eines brennstoffes sowie kohlenwasserstoff-brennstoff dafuer
EP0325309A1 (fr) * 1988-01-21 1989-07-26 SNAMPROGETTI S.p.A. Méthode de préparation d'une suspension aqueuse à haute concentration en solides

Also Published As

Publication number Publication date
EP0158587A3 (en) 1986-02-05
DE3413831A1 (de) 1985-10-17
SU1403995A3 (ru) 1988-06-15
CN85101468A (zh) 1987-01-10
CN85101468B (zh) 1988-03-16
DE3560587D1 (en) 1987-10-15
IN164291B (fr) 1989-02-11
EP0158587B1 (fr) 1987-09-09

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