METHOD FOR RECOVERING POWDER COKE IN COKE DRY QUENCHING FACILITY

摘要

PROBLEM TO BE SOLVED: To provide a method for recovering powder coke in a coke dry quenching facility, by which powder coke at a high temperature can be rapidly cooled, the facility or operations are simple, and the powder coke is prevented from scattering.;SOLUTION: The coke dry quenching facility carries out steps of supplying a circulation gas to coke 2 reserved in a cooling tower 1, subjecting the circulation gas to heat exchange by a heat exchanger 12 and again supplying the gas to the cooling tower 1. In the facility, primarily collected powder coke, which is primarily removed and collected as dust at an outlet of the cooling tower 1 is mixed with secondarily collected powder coke, which is secondarily removed and collected as dust at an outlet of the heat exchanger 12, and the mixed powder coke obtained by mixing is controlled to a prescribed temperature. Thereby, the primarily collected powder coke at a high temperature is rapidly cooled by the secondarily collected powder coke at a low temperature. The primarily collected powder coke is efficiently cooled by a cooling device 21 disposed above an on-off valve 22 for feeding the primarily collected powder coke, as well as the on-off valve 22 for feeding the primarily collected powder coke is controlled in accordance with a detected temperature of the mixed powder coke.;COPYRIGHT: (C)2012,JPO&INPIT