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Jining Zhongyin Electrification Co., Ltd. runs an annual salt-film membrane denitrification plant in a caustic soda plant, which played an important role in responding to the downturn in the chlor-alkali market caused by the international financial crisis and severely declining corporate profits. It not only achieved a high degree of automation of equipment, low comprehensive energy consumption, and environmental pollution standards, but also achieved the goal of reducing costs and increasing efficiency by nearly 7 million yuan a year.
In the past, BOC Electrochemical Corporation adopted the traditional cesium chloride method for salt water out-of-stock. In 2007, it decided to invest in a new membrane denitrification device to replace the existing sulphonate removal device. The device has the advantages of advanced technology, high degree of automation, extensive application of frequency conversion technology, low comprehensive energy consumption, and no environmental pollution. During the operation of the device in one year, the system is stable and reliable, the operating environment is good, the operating cost is low, and good economic benefits are created. According to the calculation, with the annual output of 208,000 tons of caustic soda as the benchmark, the out-of-stock device of the membrane method reduces the cost of caustic soda to 6.98 million yuan compared to the original cesium chloride process.
In the past, BOC Electrochemical Corporation adopted the traditional cesium chloride method for salt water out-of-stock. In 2007, it decided to invest in a new membrane denitrification device to replace the existing sulphonate removal device. The device has the advantages of advanced technology, high degree of automation, extensive application of frequency conversion technology, low comprehensive energy consumption, and no environmental pollution. During the operation of the device in one year, the system is stable and reliable, the operating environment is good, the operating cost is low, and good economic benefits are created. According to the calculation, with the annual output of 208,000 tons of caustic soda as the benchmark, the out-of-stock device of the membrane method reduces the cost of caustic soda to 6.98 million yuan compared to the original cesium chloride process.
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