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Neuere technische Verfahren in der Kohlechemie
Author(s) -
Collin Gerd
Publication year - 1987
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330591203
Subject(s) - coke , coal , tar (computing) , pyrolysis , waste management , naphthalene , carbon fibers , coal tar , destructive distillation , petroleum coke , dry distillation , raw material , coal gasification , pilot plant , chemistry , chemical engineering , carbonization , materials science , organic chemistry , engineering , adsorption , composite material , programming language , composite number , computer science
New technical processes in coal chemistry . The most important commercial basic processes of primary coal conversion are carbonisation, gasification, and hydrogenation. Some 450 mio t/a of coal are converted by coking in horizontal slot type ovens to 350 mio t/a of metallurgical coke for the reduction of iron ore in blast furnaces, coke oven gas, and some 20 mio t/a of coke oven benzole and coal tar as raw material for aromatics. The coke ovens are being developed to high‐capacity coking reactors. New second generation processes for the gasification of coal and lignite have advanced to an industrial scale. A vapor‐phase hydrocracking refining step has been integrated within the further developed process for the catalytic liquid‐phase hydrogenation of coal. Plasma pyrolysis of high‐volatile bituminous coal investigated on a semi‐industrial scale yields acetylene. Pressure hydropyrolysis of coal currently being tested on a pilot plant scale generates high‐aromatic liquid products. New processes for the upgrading of such liquids have been developed above all for aromatics from coal tar, e. g. for the production of naphthalene derivatives, and the conversion of polycyclic aromatic hydrocarbons into the technical carbon products carbon black, electrographite, carbon electrodes, and carbon fibres.