Method for controlling benzopyrene emission during coke oven coal charging dedusting by dry dedusting method

• Main Authors: LIU JIE, LI YONG, CAO YINPING, YU GUOPU, CHENG LEYI
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2017
• Subjects: CHEMISTRY; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; FUELS; LUBRICANTS; METALLURGY; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

The invention relates to a method for controlling benzopyrene emission during coke oven coal charging dedusting by a dry dedusting method. The coal charging dedusting adopts the dry dedusting method. The method is characterized by comprising the following steps of setting a coal charging dedusting pre-spraying procedure; during each coal charging operation, in the period of high speed coal charging dedusting, continuously spraying fine coke; enabling the pre-sprayed fine coke to be in sufficient contact with and sufficiently-mixed with coal charging dedusting flue gas and dusts; using the fine coke to adsorb benzopyrene in the flue gas; enabling each pre-spraying period to be combined with the high-speed operation of the coal charging dedusting for 3-4 minutes, wherein a coal charging dedusting pre-spraying ash bin adopts dust removing powder using the coal guiding dedusting, and a dedusting ash bin is jointly used by the coal charging dedusting and the coke guiding dedusting. According to the method disclose