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Expired
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GB20769/23A
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Individual
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Individual
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Publication of GB202639ApublicationCriticalpatent/GB202639A/en
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B32/00—Carbon; Compounds thereof
C01B32/30—Active carbon
C01B32/354—After-treatment
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Inorganic Chemistry
(AREA)
Processing Of Solid Wastes
(AREA)
Abstract
202,639. Adler, R. Aug. 19, 1922, [Convention date]. Charcoal.-The porosity of decolorizing carbons, such as wood charcoal, bone-black, &c., is increased by heating them to above 500‹ C., and passing over them a mixture of inert gases with just sufficient oxygen or air to cause oxidation without flaming. Examples of gases containing or to be mixed with the necessary proportion of oxygen are waste furnace gases and waste lime kiln gases. The Specification, as open to inspection under Sect. 91 (3) (a), describes also the use of generator gas in conjunction with oxygen. This subject-matter does not appear in the Specification as accepted.
GB20769/23A1922-08-191923-08-15A process for increasing the porosity of decolorising charcoal
ExpiredGB202639A
(en)