The process of the air separation unit is based on the pressure: high pressure process, medium pressure process and low pressure process; The high, medium and low pressure processes of the process are the same, but the exhaust pressure of the air compressor is different due to the efficiency of expansion refrigeration and the maturity of the oxygen and nitrogen compressor. The initial high-pressure process has a high product gas pressure, which generally does not require an oxygen and nitrogen compressor. The investment is small, but the energy consumption is high. At present, due to the development of relevant unit equipment, the high and medium pressure process has been eliminated.
By use: Metallurgical type, chemical type; These two processes are the most widely used mainstream processes and have been widely used in industry.
By product type: double high process, single high process, full liquid process, liquefaction device, etc; There are many kinds of these processes, which are mainly divided and developed according to the types of production liquid and gas to meet the needs of different customers.
According to the compression mode of the product: internal compression process [double pump internal compression and single pump internal compression process (air circulation and nitrogen circulation)], external compression process. This process is mainly based on the product pressure, whether the oxygen and nitrogen compressor can meet the requirements, and the investment of the product compressor.
DEAR air separation has a professional technical team to provide customers with high-quality design services for air separation equipment construction projects.
