China Drying Network Recently, Yantai Yuxiang Fine Chemicals Co., Ltd. revealed that its continuous production process of isophthaloyl dichloride has been successfully developed. After the energy conversion of the phthalyl dichloride production system, the effect has been remarkable, and raw material consumption has been greatly reduced. The waste gas was recycled to achieve resource utilization, zero emissions were achieved, and pollution problems were completely solved.
Yuxiang's inter-unit phthaloyl dichloride plant uses the world's most widely used batch process for production when it is put into operation. It has many production processes, low raw material utilization, high labor intensity, and serious tail gas emissions. After many tests, the company successfully developed a continuous process. Last year, the company invested 26.64 million yuan in transformation. After the plant is put into operation, it can save 100 tons of raw materials of isophthalic acid, 1,000 tons of thionyl chloride, save more than 20,000 tons of water, and use the recovered sulfur dioxide and hydrogen chloride to produce 3,000 tons of sodium sulfite and calcium chloride, which will increase the direct economic benefits. More than 500 million.
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