APPARATUS AND METHOD FOR COOLING COKE OVEN GAS

摘要

PROBLEM TO BE SOLVED: To provide a coke oven cooling apparatus for stably and efficiently cooling a coke oven gas. SOLUTION: A main tower body 210 through which a coke oven gas is passed from its lower part to its upper part is partitioned to form a first cooling chamber 230 at its lower part and a second cooling chamber 240 at its upper part. The coke oven gas is cooled to 50°C or higher by recirculating and cooling the tar-containing first recirculating cooling water 301 by means of a first cooler 300 to bring it to a state in which it is cooled after recovery from the bottom of the first cooling chamber 230 at 55°C or higher and is then sprayed over the top of the first cooling chamber 230 at 48°C or higher. The coke oven gas is further cooled to 35°C or lower by recirculating and cooling tar-free second recirculating cooling water 401 in the second cooling chamber 240 by means of a second cooler 400. The viscosity of the tar does not increase, and impurities in the coke oven gas are efficiently separated by means of the first recirculating cooling water 301. COPYRIGHT: (C)2007,JPO&INPIT