Standardization of cryogenic air separation equipment

(1) Can be based on the cold box outside the piping diagram provided by the equipment manufacturer and the relevant national standards and norms for industrial piping installation. For heavier weight valves, small lifting tools can be used to temporarily support them. When the piping is good, use fixed brackets to support. (2) Liquid discharge mains should be installed with compensation parts. (3) The aluminium pipe leading out of the cold box with its welded pressure plate and its seal ring s...

In order to reduce the air temperature in the low temperature air separation unit, various heat exchange equipment are needed for cold and heat exchange in various air separation systems, such as nitrogen water precooler, switching heat exchanger, main heat exchanger, condensing evaporator, subcooler, liquefier, vaporizer, electric heater, etc. These heat exchange equipments are installed in each system of the air separation unit, which are necessary for air liquefaction and gas separation. According to the principle of heat transfer, the heat exchanger of air separation unit can be divided into three types: 1. Dividing wall type: the cold and hot fluid is separated by the heat transfer wall, the medium does not directly contact in the heat transfer process, and the hot fluid transfers heat to the cold fluid through the heat transfer wall. For example, tube heat exchanger and plate heat exchanger. 2. Heat storage type: the cold and hot fluid alternately flows through the solid