GB520934A - Improvements in or relating to coking retort ovens - Google Patents

Abstract

520,934. Coke ovens. KOPPERS CO. Aug. 4, 1938, No. 23090. Convention date Aug. 5, 1937. [Class 51 (ii)] In a reversible regenerative horizontal coke oven with vertical heating flues in the oven walls, the bottom ends of the flues are supplied with regeneratively heated 'air and lean gas or with regeneratively heated air and rich gas and' the upper parts of the flues are supplied with lean gas or air through passages and ports in the partition walls of the flues and from a conduit below the floor of the oven. As shown in Figs. 1 and 2, gas and air from regenerators 15 pass through ports 42 into the lower ends of the flues 18 or when rich gas is introduced at the bottom of the flues 18 it enters through ports 29 supplied by ducts- 28 connected to mains 30, 31, all the regenerators being employed for heating air introduced by sole flues 16 and ports 17. Gas such as blast furnace gas or air is supplied to the partition walls 21 between the flues 18 by vertical ducts 35 discharging into the flues through ports 36. The ducts 18 communicate with a main 39 which may communicate with the atmosphere through openings at their ends controlled by valves 40 or with a gas main 46. In a modification instead of the rich gas duct 30 being arranged beneath the floor of the oven it is arranged in the setting immediately beneath the oven chambers. Specification 407,664 is referred to.