GB927231A - - Google Patents

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Publication number
GB927231A
GB927231A GB927231DA GB927231A GB 927231 A GB927231 A GB 927231A GB 927231D A GB927231D A GB 927231DA GB 927231 A GB927231 A GB 927231A
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GB
United Kingdom
Prior art keywords
briquettes
bed
temperature
feet
stream
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.)
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Application number
Publication of GB927231A publication Critical patent/GB927231A/en
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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
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
    • C10L5/28—Heating the shaped fuels, e.g. briquettes; Coking the binders

Abstract

927,231. Fuel briquettes. COAL INDUSTRY (PATENTS) Ltd. Sept. 2, 1959 [June 4, 1958; Aug. 21, 1959], Nos. 17821/58 and 28626/59. Drawings to Specification. Class 91 Fuel briquettes comprising carbonaceous materials such as coal or coke and a binder such as pitch are treated to reduce the smoke emitted upon eventual combustion by heating a bed of the briquettes for a time of less than two hours while passing through the bed a stream of an oxygen-containing gas such as air, to a temperature between 150‹ and 350‹C. and above the temperature at which rapid oxidation occurs but below that at which the briquettes will burn, the thus treated briquettes being then quenched with water with or without an intermediate cooling step in which the briquettes are cooled in an oxygen-containing atmosphere. The preferred time of the treatment is between 40 and 100 minutes and the depth of the bed of briquettes between 2 feet and 3 feet 6 inches. The temperature variation through a vertical cross-section of the bed preferably does not exceed 10‹C. Apparatus for carrying out the treatment comprises a horizontal tunnel furnace through which a bed of briquettes is moved on an endless conveyer through which a stream of air is drawn. Specification 807,433 is referred to.
GB927231D Active GB927231A (en)

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Publication Number Publication Date
GB927231A true GB927231A (en)

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ID=1753655

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800428A (en) * 1971-06-18 1974-04-02 Bergwerksverband Gmbh Process for cooling hot briquettes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800428A (en) * 1971-06-18 1974-04-02 Bergwerksverband Gmbh Process for cooling hot briquettes

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