en.Wedoany.com Reported - On March 29, China's Zhongtai Coal Coking initiated the construction of a new 200,000-ton/year methanol electric air compressor unit project, marking the official entry into the construction phase. This project relies on the existing public utility system for technological transformation, involving the installation of a new electric air compressor unit with a processing capacity of 55,500 cubic meters per hour (dry basis) and its ancillary systems. Construction includes the air compressor plant building, electrical control systems, ventilation and dust removal facilities, and firefighting equipment. Simultaneously, cooling water pipelines and air inlet/outlet pipelines will be optimized. The goal is to convert more fuel resources into raw materials for methanol production, enhancing the operational efficiency and resource utilization of the 200,000-ton/year methanol facility.
According to the construction plan, the project duration is 7 months. Zhongtai Coal Coking will complete equipment addition and pipeline modifications based on the existing system. This signifies that this technological upgrade is not a simple equipment replacement but a system-wide optimization focused on air separation support capacity. Compared to steam-driven methods, the electric air compressor unit offers faster startup, higher operational efficiency, lower noise, and simplified operation and maintenance. More crucially, disturbances to the air separation system will be significantly reduced during steam boiler or main process unit shutdowns for maintenance, directly supporting the long-term continuous operation of the methanol facility.
After the project is put into operation, energy savings and production increase data are relatively clear. According to disclosed calculations, the project can save 16 million cubic meters of coke oven gas annually; the displaced gas can be used to produce 8,150 tons of refined methanol. After each maintenance period, startup time can be shortened by 2 days, resulting in annual cost savings of 7.8222 million yuan. Simultaneously, it will reduce energy consumption by 7,280.61 tons of standard coal, lower carbon dioxide emissions by 19,000 tons, and save 591,400 tons of circulating water.
For chemical materials enterprises, the value of such electric air compressor technological upgrades extends beyond energy savings for a single piece of equipment. Coke oven gas, steam, public auxiliary systems, and methanol facilities are highly coupled; fluctuations in any area propagate to continuous production processes. By implementing the electric air compressor unit, Zhongtai Coal Coking not only unlocks the raw material value of 16 million cubic meters of coke oven gas but also incorporates equipment stability, maintenance efficiency, and carbon reduction indicators into the upgrade objectives. If the project is completed and operational within 7 months, its demonstration significance will extend beyond cost reduction for a single plant; it may also provide a replicable pathway for energy conservation and carbon reduction upgrades in the coal chemical industry in the Southern Xinjiang region.
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