APPARATUS FOR PRODUCING COMBUSTIBLE GASES LIQUID COAL DISTILLATION PRODUCTS AND HIGH-PRESSURE STEAM FROM COAL

摘要

1485319 Fluidised bed apparatus BERGWERKSVERBAND GmbH 9 Oct 1975 [10 Oct 1974] 41381/75 Heading B1F [Also in Divisions C5 and F4] Apparatus for treating coal to produce combustible gases and high pressure steam comprises a first fluidised bed chamber 4 for degassing and coking finely divided coal, and a second fluidised bed 5 for burning the coke, the two beds being contained in a single enclosure and communicating via a transfer system 2, 3 in the enclosure which allows fluidised bed material to flow in a controlled manner between the two chambers, steam generation pipes 11 installed in the bed of the second chamber 5, outlet 7 for the gas evolved in the first chamber, means for purifying the gas and an inlet 8 for returning the purified gas to the first bed. Heat is transferred from the combustion bed 5 to the coking bed 4 by means of recirculating ash. Combustion bed 5 is fluidised by air, and the coking bed may be fluidised by a mixture of water vapour and recycled gases.