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Jining Electrochemical's chlorinated benzene products produce 45,000 tons of byproduct hydrochloric acid per year during the production process. Due to the large number of byproducts of acid production and limited marketing, they had to store in large quantities. This bottleneck not only restricts the production of chlorinated benzene, but also causes the acid mist to escape the polluted environment. To this end, Jining Electrochemical Company organized technical forces to tackle the problem. After examining various defibration technologies in China, they complemented each other and improved the equipment and process. Based on their own strength, they designed and installed a deacidification device to better solve the problem of falling film absorption and acid production. Problems such as organic matter and flowing mist, as well as the recycling of materials entrained in the secondary acid. Hydrogen chloride with a purity of 99.5% after degumming can be used as an important raw material for PVC production. High-purity hydrogen chloride gas improves the synthesis conversion rate of vinyl chloride and greatly reduces the consumption of calcium carbide in polyvinyl chloride products. According to the calculation, one ton of hydrogen chloride gas with a purity of 99.5% can be stripped out of every 3 tons of by-product acid, and the annual profit can reach more than 7 million yuan.
Jining electrochemical deacidification energy-saving efficiency
Jining Zhongyin Electrochemical Co., Ltd. invested more than 4 million yuan to design a new project for the production of a byproduct hydrochloric acid desorber. The device was put into operation for more than four months, and the operation effect was good. It achieved emission reduction, environmental protection, energy saving, and efficiency gains in one fell swoop.