Most chemical plants need to use air compressors to compress air, and air compression by air compressors generates a lot of heat, which causes the temperature of compressed air to rise. The traditional method is to use a circulating cooling water or a chilled water medium to heat-exchange the compressed air to meet the requirements of the process. This not only loses a lot of heat energy, but also causes a large increase in the power consumption of the production of cooling water or chilled water medium. Therefore, the air compressor has a large potential for energy saving and consumption reduction.
Recently, Shanghai Chlor-Alkali Chemical Co., Ltd. cooperated with Shanghai Dongzhiping Science & Trade Co., Ltd. to adopt the contract energy management sharing mode, and separately carried out the air compressors of the company's electro-chemical plant air compressor station and PVC plant air separation unit. The waste heat recovery energy-saving transformation has all achieved success. The principle of the transformation is: installing high-efficiency high-temperature compressed air waste heat recovery equipment on the outlet pipe compressed by the air compressor, recovering compressed air heat energy to produce a large amount of hot water, and supplying it to the employees of the nearby company's employees, thereby canceling the original employee bathroom. The low-pressure steam heating equipment reduces the low-pressure steam energy consumption level of the device, and at the same time, since the compressed air waste heat is pre-recovered, the large amount of circulating cooling water or chilled water medium resources required for cooling the compressed air is greatly reduced, thereby The amplitude saves power consumption for the production unit.
After the technical transformation of the air compressor, the operation is stable, safe and reliable, and the economic benefits are obvious. It is expected to create hundreds of thousands of yuan per year for Shanghai chlor-alkali.
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