Air separation parts FAQ

1. What is reflux ratio? What influence does it have on rectification? Answer: reflux ratio refers to the ratio of the amount of liquid in the lower stream of the distillation tower to the amount of rising steam. The purity of the distillation product depends on the size of the reflux ratio when the number of the tower plates is certain. When the reflux ratio is large, the nitrogen purity in the obtained gas phase is high, while the oxygen purity in the liquid phase is low; when the reflux ratio is small, the nitrogen purity in the obtained gas phase is low, and the oxygen purity in the liquid phase is high. 2. What are the causes of the molecular sieve water inflow accident? Answer: 1. When the liquid level of the air cooling tower is higher than 3500mm, the water will exceed the height of the air inlet pipe, and a large amount of water will enter the molecular sieve adsorber along with the air; 2. When the resistance of the air cooling tower rises, which is higher than 7kPa, liqui...

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Regulation of liquid nitrogen throttle valve

Causes of low air compressor efficiency of small air separation unit   There are many reasons for the low efficiency of air compressors, the common ones are: increase in suction temperature at any level, cooler leakage, decrease in grid frequency or voltage, blockage or increase in resistance of the compressor intercooler, gas leakage due to poor sealing, blockage or increase in resistance of the air filter, blockage or increase in resistance of the pipeline of the air separation equipmen...

The molecular sieve of purification system has strong water absorption, but the water absorption capacity is limited to a certain extent. In order to prevent the molecular sieve from entering water during operation, the following points should be paid attention to: The air cooling tower should be operated according to the regulations, and the gas should be introduced first, and then after the...

  After the gas flows out of the expander impeller, there is still a certain speed. This part of mechanical energy without work is called residual speed loss. In order to reduce the velocity of the gas flow at the outlet of the expander, there is generally a section of expanding short pipe at the outlet of the expander impeller. This section of short pipe can reduce the velocity of the air flowing out of the expander impeller, reduce the...

According to the specification and smelting level of converter, the total oxygen consumption of steel can be calculated and converted to the oxygen consumption of each hour. The low and peak oxygen consumption is balanced by ball irrigation or liquid vaporization. The gas pressure of peripheral comprehensive pipe network is higher than the pressure of final gas consumption point. It is sent to the user thro...

Air cooling column start-up process