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我省某年产3000吨的烧碱厂,配备有处理能力为3000吨/年的液氯工段,需要蒸发温度为-40℃的冷冻量35700大卡/时.液氯冷冻站配备有低压氨压缩机4AJ15-I型和高压氨压缩机2AL15-I型各两台,构成两组冰机,一开一备.据现场生产人员反映,该冷冻站开机时,表现出制冷能力过大,氯液化槽温度很快地从规定的-20℃被拉低到-38℃.这时要是继续开机,氯液化槽温度还要继续下降,同时会出现高压机带霜等不正常现象.因此,
An annual output of 3,000 tons of caustic soda plant in our province, equipped with a capacity of 3000 tons / year liquid chlorine section, the need to evaporate temperature of -40 ° C frozen 35700 kcal / hour liquid chlorine freezer is equipped with low pressure ammonia compression Machine 4AJ15-I type and high-pressure ammonia compressor 2AL15-I each two, constitute two groups of ice machines, open one prepared.According to field production staff reflect the refrigeration station boot, showing the cooling capacity is too large, chlorine liquefaction The tank temperature is rapidly pulled down from the specified -20 ° C to -38 ° C, and if it continues to turn on, the temperature of the chlorine tank will continue to drop, and abnormal phenomena such as high-pressure machine belt frost may occur. Therefore,