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On November 25, 2021, the 6.78-meter coke oven 260t/h dry quenching waste heat recovery project of Inner Mongolia Qinghua Group Qinghua Coal Chemical Co., Ltd. officially started construction. Representatives from the project owner, designer, supervisor, and constructor attended the meeting.* Groundbreaking ceremony. On the morning of February 16, 2022, the groundbreaking ceremony for the 2×70 hole 2 million ton coking 6.78-meter coke oven upgrade project designed by MCC Jiao Nai (Dalian) Engineering Technology Co., Ltd. and constructed by the construction team of Inner Mongolia Qinghua Project Department of Changzhou Jiaohuan Engineering Co., Ltd. was held grandly in the Ustai Park of Inner Mongolia Qinghua Group. The investment in this project is nearly 1.5 billion yuan. The carbonization chamber is 6.78 meters high and is equipped with a dry coke quenching device and an advanced desulfurization and denitrification device. The process equipment used in the project has reached the highest level of coke oven design in my country. The main device is equipped with an automatic heating system and an automatic adjustment system, which reduces the heat consumption of the coke oven and improves the thermal efficiency. The mechanical equipment of the project realizes manned and unmanned operation of tamping, coal loading, and coke pushing, with a high degree of automation. It is currently the largest tamping coke oven with the most advanced technology in the world. Perfect environmental protection measures and production processes ensure that the emissions of waste gas, dust, waste residue and other pollutants are reduced from the source, and the environmental benefits are significant. The 6.78-meter tamped coke oven raw coal has the advantages of wide adaptability, low carbon and environmental protection, energy saving and high efficiency, high level of intelligence, and ultra-low emissions throughout the entire process. It has significant social, economic and environmental benefits, and is of great practical significance in promoting the high-quality development of the coking industry. The construction of coke oven #1 started on July 28, 2022, and it took 141 days to complete the construction of the main refractory material of the 6.78m coke oven! It took 141 days to achieve a staged victory. At 10:00 a.m. on December 15, 2022, the Inner Mongolia Qinghua Group Qinghua Coal Chemical 2-million-ton coke oven upgrade project held a grand ceremony to cap off the No. 1 coke oven. Project Overview Inner Mongolia Qinghua Group Qinghua Coal Chemical Co., Ltd. invested nearly 1.5 billion yuan in the 2×70-hole 2 million-ton coking 6.78-meter coke oven upgrade project. The carbonization chamber is 6.78 meters high. The process equipment used in the project has reached the highest level of coke oven design in my country. Among them, our company is responsible for the construction of multiple projects such as dry quenching device, riser waste heat recovery system, carbonization chamber drying system (CPS), coke oven insulation, and coke oven automatic heating system. This project is located in the Alxa League High-tech Zone in Inner Mongolia. It is constructed by Changzhou Jiaohuan Engineering Co., Ltd. (Jiangsu Longye and Shaanxi Yuteng jointly invested 245 million yuan) using the contract energy management model. The project mainly constructs a set of dry quenching units with a rated processing capacity of 260t/h, supporting a set of 7.5MW back-pressure generator units. , the steam pressure after back pressure is 4.0~4.5MPa, and the temperature is about 450°C. The steam after back pressure is incorporated into Party A’s existing steam pipe network. After the project is completed, it can effectively promote energy conservation and emission reduction, clean production, significantly improve coke quality, improve the coke oven environment and reduce energy consumption, save energy and reduce emissions, and form a green and healthy circular economy development model.