The entire coking dry quenching project of Linfen Wanxinda Coking Chemical Co., Ltd. adopts Chongqing Langwei signal isolators. The existing projects include: Linfen Wanxinda Coking Co., Ltd. Phase 3, a total of 2.1 million tons/year coking project (hereinafter referred to as the "Coking Project"), which obtained environmental impact assessment approval before 2008. Subsequently, according to the newly introduced policies, upgrading and transformation will be carried out, and desulfurization and denitrification measures will be added to the coke oven flue gas; Fully enclose the raw coal yard and coke storage yard; Collect the tail gas from tar tanks, benzene tanks, and various intermediate storage tanks and send it to the exhaust cleaning tower for treatment; Perform VOC treatment on biochemical treatment equipment; Comprehensive utilization of desulfurization waste liquid generated from coking projects for acid production; According to the Implementation Plan for Deep Emission Reduction in the Steel and Coking Industry of Linfen City (2019) No. 35 and the Opinions on Promoting the Implementation of Ultra low Emissions in the Steel Industry (2019) No. 35, Wanxinda Coking Co., Ltd. has completed the deep treatment of pollution sources such as crushing and screening, transportation, coke oven chimneys, coal loading (machine side), and coke pushing ground stations in the entire plant by the end of 2019. In addition, dry quenching units will be constructed separately for the Phase I 600000 tons/year coking project and the Phase III 900000 tons/year coking project; At the same time, a deep treatment device will be installed for the concentrated salt water in the entire plant, and a concentrated water reverse osmosis and coke quenching water treatment system will be added. Currently, the concentrated water in the entire plant will be treated and used as supplementary water for the second phase of wet coke quenching.

　　The main contents of the project construction include: the construction of one set of 90th dry quenching coke body (pre storage room, dry quenching tank, cooling room), coke transportation system, coke powder collection system, dry quenching ground station, secondary economizer exhaust gas dust removal device, coke transfer dust removal ground station, relocation platform and coke tank maintenance station for the second phase of 600000 tons coking. Signal isolators provide guarantee for the stable operation of the system. The liquid nitrogen gasification device, water supply and drainage facilities, roads within the dry quenching area, and other public works rely on the company's existing infrastructure. At the same time, during the construction process of dry quenching, the enterprise plans to send the waste heat steam from dry quenching to the existing idle 2x6MW generator units for comprehensive utilization, and change the cooling method of the exhaust steam after power generation from circulating water cooling to direct air cooling.

　　The dry quenching system is arranged east of the quenching tower and on the coke side; The environmental dust removal ground station and main control building are jointly built and arranged east of the dry quenching system; The secondary economizer dust removal ground station is arranged west of the quenching tank; The coke powder warehouse is arranged inside the existing coke powder shed; The auxiliary room is arranged south of the dry quenching system; The relocation platform and coke tank maintenance station are arranged west of the coke oven; The coke transfer dust removal ground station is arranged east of the coke shed; Cold coke is connected to the existing cold coke transportation system through the construction of new coke transportation corridors, transfer stations, and other facilities.