What safety matters should be paid attention to when checking pressure pipelines?

Liquid air separation plant piston compressor clearance volume is: the compressor at the end of the exhaust, the piston and the cylinder end of the wall between the residual part of the high pressure gas occupied by the cylinder volume. The existence of the residual volume directly reduces the exhaust volume of the compressor, at the same time, the suction of this part of the high pressure gas expansion, will also cause a delay in the suction process, the reduction in suction volume, ultimately ...

All low pressure air separation units are usually equipped with nitrogen water precoolers. It mainly uses the unsaturation of nitrogen in sewage to evaporate part of water. As the water evaporates, it absorbs the latent heat of vaporization to lower the temperature of the cooling water, which is then used to cool the treated air and lower the temperature of the air entering the column. Therefore, it includes air cooling column and water cooling column. The basic purpose of setting up nitrogen precooler is to reduce the air temperature entering the air separation column and avoid the temperature fluctuation greatly. Because the inlet air temperature directly affects the operation conditions of the switching heat ex-changer and distillation column, as well as the economy of the whole air separation unit. In the design, the air temperature entering the column is usually set at 30 ° C. When the inlet temperature of the column is higher than the design index during operation, the throttl