Air separation parts FAQ

Throttle cooling

Flow of air precooling system

Air separation equipment piston type liquid oxygen pump is widely used in liquid gasification station. The following requirements should be paid attention to when using: 1) all the parts, pipes, valves, sealing rings and so on contacting with oxygen must be strictly deoiled; 2) the oil level of the transmission device of the liquid pump should be checked frequently. The minimum oil level of the reduction box should not be lower than that of the big gear top, and the lowest position marked by the oil Rod should be measured; 3) When disassembling the internal parts of the liquid pump, there should be no dust in the working environment. Tools and work clothes must be clean and greasy. Clean parts should be blown dry with nitrogen to prevent moisture and dust pollution. All the orifice should be sealed with white cloth in case of entering the dirt and drawing the piston and cylinder; 4) the liquid pump should not be started before the precooling is complete. Do not operate under the con...

How to store liquid nitrogen in air separation plant

1) insufficient cooling water. The heat of the air is not enough to be taken away by the cooling water, resulting in the increase of the next level of suction temperature, the decrease of gas density, and finally the reduction of exhaust volume. Therefore, the water supply pressure of cooling water should be closely monitored during operation to control the water supply. The process generally requires that the cooling water pressure should be greater than 0.15MPa (surface pressure ); 2) cooling water temperature is too high. High water temperature reduces the temperature difference between water and gas, and reduces the effect of heat and cooling. Even if the amount of cooling water is not reduced, the temperature will still be very high after gas cooling; 3) There are too much scale in the cooling water pipe or it is blocked by sediment and organic matter, as well as moisture precipitation after cooling on the air side of the cooler, which can not be discharged timely, all of which...

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...

What is the development history of precooling system of air separation unit

What are the general characteristics of air and air components

Air blockage of centrifugal liquid oxygen pump

Analysis of the reasons why the liquid discharge valve cannot be closed

What measures should be taken in case of failure of booster turbine expander of air separation unit

Regulation of liquid nitrogen throttle valve