Liquid oxygen products are extracted from the condensing evaporator, compressed to the required pressure by the liquid oxygen pump, and then reheated and gasified by the heat exchanger before being supplied to the user. This process is the internal compression process of liquid oxygen. Because the oxygen channel of the heat exchanger in the internal compression process has to bear high pressure, the cost of the heat exchanger has increased, but the cost of the liquid oxygen pump is much cheaper than that of the oxygen compressor. Considering the cost factors, the cost of internal compression process is not higher than that of external compression process. The important thing is that liquid oxygen is continuously discharged from the main cooling, and the safety of the equipment is better than that of extracting gas oxygen from the bottom of the upper tower. Moreover, the compression of liquid oxygen is also safer than that of gas oxygen. At present, internal compression process is widely used internationally.
DEAR air separation equipment data acquisition team will do a good job of early warning on the operation status of the air separation equipment in advance, and conduct detailed data acquisition on the monitored objects, including product operation signals, operation data, output information, system parameters, fault signals, trend signals, and video key signals processed by manual control and machine control software, so as to provide customers with more timely and accurate technical support, Find the possible problems in the operation of the equipment as soon as possible, and eliminate the problems in time.
