Method of restricting the formation of dust when feeding coal into coke ovens
AssigneeBergwerksverband GmbH
InventorsKurt-Gunther Beck, Wolfgang Rohde, Diethard Habermehl, Werner Siebert
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Abstract
A method for inhibiting dust formation while feeding coal into a coking chamber, comprising preheating coal and subsequently contacting the coal with an aqueous solution of 30-70% by weight of waste sulfite liquor in amounts of about 0.5 to 1.0 parts by weight of said solution per 1000 parts by weight of said coal.
Claims8
A method of inhibiting dust formation while feeding coal into a coking chamber, comprising preheating coal, and subsequently contacting said coal with an aqueous solution of 30-70% by weight of waste sulfite liquor in amounts of about 0.5 to 1.0 parts by weight of said solution per 1000 parts by weight of said coal.
A method of inhibiting dust formation while feeding coal into a coking chamber, comprising preheating coal to a temperature between 130.degree. and 190.degree. C., and subsequently contacting said coal with an aqueous solution of 30-70% by weight of waste sulfite liquor in amounts of about 0.5 to 1.0 parts by weight of said solution per 1000 parts by weight of said coal.
A method of inhibiting dust formation while feeding coal into a coking chamber, comprising preheating coal;
- forming an emulsion which comprises an aqueous solution of 30-70% by weight of waste sulfite liquor and which amounts to about 0.5 to 1.0 parts by weight of said solution per 1000 parts by weight of said coal, and an amount of tar 10-50 times by weight, the tar being derived from the coking of the same type of coal as is preheated in said preheating step;
- and subsequently contacting said coal with said emulsion.
A method of inhibiting dust formation while feeding coal into a coking chamber, comprising preheating coal to a temperature of 190.degree. C.;
- forming an emulsion comprising 10 parts of a solution composed of a surfactant which is a sulfonate of a fat alcohol and which amounts to 0.5% by weight of the solution, and waste sulfite liquor which amounts to 60% by weight of the solution, and 90 parts by weight of crude tar;
- and subsequently contacting said coal with said emulsion in an amount sufficient to inhibit dust formation.
A method of inhibiting dust formation while feeding coal into a coking chamber, comprising preheating coal;
- forming an emulsion comprising an aqueous solution of 30-70% by weight of waste sulfite liquor and which amounts to about 0.5 to 1.0 parts by weight of said solution per 1000 parts by weight of said coal, and an amount of tar 10-50 times by weight of tar which is derived from bituminous coal;
- and subsequently contacting said coal with said emulsion.
Dependencies are inferred from the claim text.