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WO1989006268A1 - Composition servant a reduire l'incrustation de scories dans des foyers de chaudiere et l'emission de soufre - Google Patents

Composition servant a reduire l'incrustation de scories dans des foyers de chaudiere et l'emission de soufre Download PDF

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Publication number
WO1989006268A1
WO1989006268A1 PCT/HU1988/000085 HU8800085W WO8906268A1 WO 1989006268 A1 WO1989006268 A1 WO 1989006268A1 HU 8800085 W HU8800085 W HU 8800085W WO 8906268 A1 WO8906268 A1 WO 8906268A1
Authority
WO
WIPO (PCT)
Prior art keywords
crustation
composition
sulfur
emission
slag
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
PCT/HU1988/000085
Other languages
English (en)
Inventor
György VÁMOS
G. Béla WENCZEL
Zoltán SÜDI
László Barta
György SCHAMSCHULA
Györgyné SCHAMSCHULA
József Kovács
Tamás Kovács
Józsefné KOVÁCS
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
Publication of WO1989006268A1 publication Critical patent/WO1989006268A1/fr
Anticipated expiration legal-status Critical
Ceased 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development

Definitions

  • the present invention relates to a composition reduc ⁇ ing slag crustation in boiler furnaces - firing devices - and emission of sulfur and to application of this composition as well.
  • Boiler is to be stopped so that the slag layer would be re ⁇ moved, what means a hard physical work. This causes a break ⁇ down and the restarting is expensive.
  • a composition of the present invention contains 25-55%, prefarably 30-45% ammonium sulfate, 20-40%, pre ⁇ ferably 25-35%, suitably about 30% magnesium chloride (this one e.g. in form of a saturated solution in water) calculated on the total mass of the composition.
  • Essential ingredient of the composition of this invention is the fly ash fraction with a high specific surface, amount of which is ranging from 5 to 55%, pre ⁇ ferably from 10 to 40% calculated on the total mass of the composition.
  • the "high specific surface” expression means
  • the fly ash fraction contains CaO+Na 2 0+K 2 0+MgO+Si0 2 +Al 2 0 3 +Fe 2 0 as ingredients, its alkali content, what can be expressed by the molar ratio of (CaO+Na 2 0+K 2 0+MgO) : (Si0 2 +Al 2 0-+Fe 2 0-) , is very important, and this molar ratio is ranging from 1,2 to 2,8.
  • a high alkali content namely a 1 molar ratio of about 2,2 to 2,8, moreover a CaO content of at least 45 wt% are preferred.
  • the composition of the present invention may be in form of a powder or a granulate depending on the intended application. With respect to applicability a granulate is preferred. A granulate can be prepared according to known processes by means of suitable equipments. A composition of the present invention can be pre ⁇ pared by simple mixing of the ingredients making a homo ⁇ geneous mixture.
  • the present invention relates also to the applica ⁇ tion of the compositions mentioned above, the very essence of this application is that the composition may be fed into the furnace chamber in an amount of about 0,1-5% calculated on the total mass of ashes in the coal.
  • composition of the present invention is based probably on it that ammonium sulfate sublimates in the surface chamber with a temperature of 1100-1200°C and immediately condenses in the boiler tubes with a relatively lower temperature.
  • submicronic molten flue-dust particles which appear at the beginning of slag crustation, will be contacted at first with this substance.
  • Magnesium chloride fed together with ammonium sulfate part ⁇ ly melts and partly evaporates at the temperature of the furnace chamber.
  • fly ash fraction absorbs sulfur oxides, and as a result of this surface reaction it will be transformed to calcium sulfate additionally reducing the emission of sulfur.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Incineration Of Waste (AREA)

Abstract

La composition décrite, qui sert à réduire l'incrustation de scories dans un foyer de chaudière et l'émission de soufre, se compose d'un mélange de sulfate d'ammonium, de chlorure de magnésium, d'une fraction de cendres volantes et d'huile. Cette composition peut être introduite dans la chambre du foyer selon une quantité comprise entre 0,1 et 5 % calculée sur la base de la masse totale des cendres présentes dans le charbon.
PCT/HU1988/000085 1987-12-28 1988-12-27 Composition servant a reduire l'incrustation de scories dans des foyers de chaudiere et l'emission de soufre Ceased WO1989006268A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU6017/87 1987-12-28
HU876017A HU200361B (en) 1987-12-28 1987-12-28 Composition and process for reducing slagging of boiler furnaces and sulfur emission

Publications (1)

Publication Number Publication Date
WO1989006268A1 true WO1989006268A1 (fr) 1989-07-13

Family

ID=10971123

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1988/000085 Ceased WO1989006268A1 (fr) 1987-12-28 1988-12-27 Composition servant a reduire l'incrustation de scories dans des foyers de chaudiere et l'emission de soufre

Country Status (2)

Country Link
HU (1) HU200361B (fr)
WO (1) WO1989006268A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387928A3 (fr) * 1989-03-11 1990-12-27 METALLGESELLSCHAFT Aktiengesellschaft Agent de désulfuration et son procédé de fabrication
WO2002008666A1 (fr) * 2000-07-26 2002-01-31 Global New Energy Technology Corporation Procede et produit servant a ameliorer la combustion d'un combustible fossile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036072A (en) * 1978-11-29 1980-06-25 King Chemicals Ltd C Treatment of Fuel Oil
FR2551184A1 (fr) * 1983-08-26 1985-03-01 Stein Industrie Procede d'injection d'un materiau pulverulent dans un foyer de chaudiere, et dispositif de mise en oeuvre de ce procede
DD224613A5 (de) * 1983-09-26 1985-07-10 Kiskun Mezogaz Termeloes Verbrennungsverbessernde zusatzstoffkomposition zur reinigung von heizvorrichtungen, kaminen, rauchzuegen und waermegeneratoren
DE3530276A1 (de) * 1985-08-24 1987-02-26 Hoelter Heinz Umweltfreundlicher brennstoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036072A (en) * 1978-11-29 1980-06-25 King Chemicals Ltd C Treatment of Fuel Oil
FR2551184A1 (fr) * 1983-08-26 1985-03-01 Stein Industrie Procede d'injection d'un materiau pulverulent dans un foyer de chaudiere, et dispositif de mise en oeuvre de ce procede
DD224613A5 (de) * 1983-09-26 1985-07-10 Kiskun Mezogaz Termeloes Verbrennungsverbessernde zusatzstoffkomposition zur reinigung von heizvorrichtungen, kaminen, rauchzuegen und waermegeneratoren
DE3530276A1 (de) * 1985-08-24 1987-02-26 Hoelter Heinz Umweltfreundlicher brennstoff

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, C field, Volume 75, No. 62, issued 23 March 1984, The Patent Office Japanese Government, page 4 C 215; & JP,A,58 213 882 (MITSUBISHI), see abstract. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387928A3 (fr) * 1989-03-11 1990-12-27 METALLGESELLSCHAFT Aktiengesellschaft Agent de désulfuration et son procédé de fabrication
WO2002008666A1 (fr) * 2000-07-26 2002-01-31 Global New Energy Technology Corporation Procede et produit servant a ameliorer la combustion d'un combustible fossile

Also Published As

Publication number Publication date
HU200361B (en) 1990-05-28
HUT48671A (en) 1989-06-28

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