GB1271585A - Improvements in or relating to the manufacture of coke - Google Patents

Abstract

1,271,585. Continuous carbonizing apparatus. KOPPERS CO. Inc. 28 Nov., 1969 [12 Dec., 1968], No. 58410/69. Heading F4B. Apparatus for continuously coking coal comprises an endless conveyer 13 fed by a coal hopper 61, heating walls 15 around a coking chamber 45, and a discharge hopper 17 incorporating cooling water sprays 100 and a rotary pocketed drum 89 feeding a discharge conveyer 91. The conveyer 13 comprises endless chains 23 carried by sprockets 25 and attached to refractory blocks 21 with side-plates 31. The heating walls are formed by inner and outer walls 39, 43, 41 and 47 and hot gases from burners 81 are directed therethrough along a sinuous path defined by side baffles 53 and upper baffles 57 before leaving via a hood 59 and chimney 19. The burners 81 are disposed in a header wall 79 connected by a branch 95 to a conduit 93 in the discharge hopper 17, the top of conduit 93 having a butterfly valve 97. Once coking has started, some of the gas generated in chamber 45 goes direct to the burners 81 and some into the hopper 17 where it passes up conduit 93 together with steam generated therein from the cooling coke. Windbores 33 below the conveyer supply limited quantities of air or oxygen enriched air to chamber 45. The coal hopper 61 may be equipped with superposed reciprocating rams (Figs. 6 and 7) which discharge the coal down a slope on to the endless conveyer 13 with some consequent compression. Modified apparatus (Figs. 3-5) has double concentric heating walls, the inner one being fired by side burners for part of the cycle and swept by a stream of carbonized gas and steam for the remainder of the cycle. Reforming action which takes place cools the heating wall to a desired minimum temperature.