Carry air separation device of sealed nitrogen gas

The utility model provides a carry air separation device of sealed nitrogen gas, at the entry linkage reserve nitrogen pump of water bath formula vaporizer, water bath formula vaporizer exit linkage is going the empty sealed tube that divides online through the relief pressure valve connection in nitrogen gas storage tank, the export of nitrogen gas storage tank all the way, and another sweetgum fruit is crossed the pipeline and has been connected gradually relief pressure valve and check valve, and through synthetic compressor of the pipeline connection of check valve and propylene compressor, synthetic compressor and propylene compressor still are connected with low pressure nitrogen gas pipe network, nitrogen gas divides two the tunnel behind the nitrogen gas storage tank, deliver to differential pressure to 0.5Mpa differential pressure to 0.5Mpa confession sky partial shipment to interior sealing gas usefulness, another way low pressure nitrogen gas through the check valve and remove low pressure nitrogen gas sealing gas pipe network for newly -increased pipeline, process relief pressure valve through the relief pressure valve all the way, during air separation device normal operation, the accessible comes from direct the confession to synthetic compressor and propylene compressor of low pressure nitrogen gas of low pressure nitrogen gas pipe network, the utility model has the characteristics of simple structure improves production efficiency, provides qualified nitrogen gas, and the propylene that significantly reduces discharges.