Heat transfer performance of heat exchangers for the small air separation unit

The air in nature is not absolutely dry, and a certain amount of gaseous water vapor is always mixed inside, which is a conventional part of air. Under normal pressure and normal temperature, water vapor is evenly dispersed in the air and will not condense into liquid water, so we cannot directly observe water. In the air separation operation, the air is first compressed by the air compressor. After the air is compressed, the volume is greatly reduced, and the density of water vapor in unit space increases sharply. At the same time, the saturated water content of air will change with the increase of pressure. Under high pressure, the upper limit of water vapor contained in air tends to be fixed. When the water vapor content exceeds the saturation value corresponding to the pressure, the air will reach the supersaturated state, which has the basis of water precipitation. The air compression process will generate a lot of heat, and the high temperature environment can temporarily improve

In terms of technology, different from most manufacturers that only guarantee the output of oxygen and nitrogen, Deere realizes the full extraction of oxygen, nitrogen, argon, helium, neon, krypton and xenon, and the output and purity of various products meet or exceed the contract indicators, so as to fully tap the value of Air Resources. In terms of delivery, the integrated mode reduces the connection problems caused by multi-party subcontracting, shortens the construction cycle, helps customers put into production quickly, and shortens the return on investment cycle. The system energy consumption is stable and meets the contract design standard, and the problem of "paper energy saving, actual high consumption" is eliminated. Intelligence is a highlight. The project applies Deere's self-developed blue bank intelligent operation and maintenance system for the first time, relying on big data, AI model, robot and UAV inspection, to realize real-time monitoring, intelligent analysis and