Kaifeng complete set of air separation plant

Nitrogen-water precooler is generally installed in all low-pressure air separation plant. It mainly uses the unsaturation of the water in the nitrogen to make part of the water evaporate. When the water evaporates, it absorbs the latent heat of vaporization to lower the cooling water temperature, and then uses it to cool the processed air to lower the air temperature entering the tower. Therefore, it includes air cooling tower and water cooling tower. The fundamental purpose of setting nitrogen-water precooler is to reduce the temperature of air entering the air separation tower and avoid the sharp fluctuation of the temperature entering the tower. Because the air temperature in the tower directly affects the working condition of switching heat exchanger and distillation column and the economy of the whole air separation plant. When designing, the temperature of air entering the tower is generally set at 30℃. When the inlet temperature of the tower is higher than the design index du...

Air separation plant is one of the important production devices in petrochemical, metallurgy and other industries. Due to its special structure and physical and chemical properties of media, the risk of explosion is relatively high. In recent years, due to manufacturing defects and poor management of air separation plant, there have been many explosion accidents of air separation plant. According to incomplete statistics, there have been more than 100 explosion accidents of small air separation plant all over the country, there are more than 30 accidents of large and medium-sized air separation plant, especially the explosion caused by excessive hydrocarbon substances in the evaporator of air separation main condensing is the main reason for frequent accidents in recent years, which not only affects the smooth operation of production unit, and cause great economic losses to enterprises and the country. The following is a brief discussion on the explosion mechanism and explosion-proo...