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In order to better adapt to the product’s structure adjustment, satisfy the need of recycling economy and comprehensive utilization and to achieve cyclic utilization of chlorine, hydrogen and other resources, Yangnong Group bagin to study PMXTM diaphragm technology replace modified diaphragm to achieve the whole process’s optimization by the high adaptability of the device. This project is from Yangnong Group’s need of production practice process. It is of great significance for the realization of NaCl cyclic utilization, energy saving and emission reduction, and improve the company’s overall competitiveness of caustic soda products.The PMXTM, which is a non-toxic and harmless, environmental protection material was used to replace the modified asbestos diaphragm in the electrolytic production process. The tolerance of the salt water quality (especially TOC content), renewable performance, service life and energy conservation and environmental protection potential ability were tested and investigated. The PMXTM plus diaphragm can adapt to the salt water contain TOC content≤500ppm. The results show this technology can make great achievements on the cyclic utilization of TOC salt water, energy conservation and emission reduction in electrolysis process. Yangnong Group purchased pump, evaporator etc domestic equipment, adopted the Donora company’s PMXTM plus diaphragm patent technology to transforms the caustic soda device,which annual capacity of 100000 tons of in Ruixiang plant, which lower power consumption, and make the device in the vice salt for recycling, realize the energy conservation and environmental protection.
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