DEAR News - DEAR Air Separation

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2026.03.27

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Why is there both liquid nitrogen and gas nitrogen on the top of the air separation tower?

In boiling water when we can see, at atmospheric pressure, temperature to 100 ℃, water began to boil. But water not all at once into steam, but with t

Apr 08, 2013

Why can gas nitrogen be used to cool liquid nitrogen in liquid nitrogen supercooler?

The liquid nitrogen supercooler uses the low temperature gas nitrogen from the upper tower to cool the liquid nitrogen from the lower tower, so as to

Apr 08, 2013

As for the hollow air cooling of the medium pressure oxygen generator, part of it will be liquefied when it is-150℃. Why is it still gas when it is cold to-171℃ in the low pressure oxygen generator?

The liquefaction temperature of gas is not only related to the type of gas, but also to the level of pressure. The higher the pressure is. The closer

Apr 08, 2013

Dream highlights life

When we were young, the dream we talked about most was to be a scientist, because we thought that scientists symbolized infinite wisdom. After I grow

Apr 08, 2013

What are the special requirements of the oxygen generator for medical oxygen production?

In addition to certain requirements on the purity of medical oxygen (the purity of oxygen is 99.5% for the cooling method), it is also required that

Apr 07, 2013

Compared with the original equipment, what are the technical improvements of the new small air separation plant?

Since 1990s, some mature advanced technologies of oxygen generation have also been applied in small air separation plants, which have reduced cold los

Apr 07, 2013

Why is liquid oxygen self-circulation adsorption system still set up in some air separation equipment of molecular sieve purification process?

There are different opinions on whether liquid oxygen explosion-proof system should be set in the air separation plant of molecular sieve purification

Apr 07, 2013

What are the types of liquid-level self-cyclic adsorption?

Liquid oxygen self-cyclic adsorption can be divided into three types according to different heat sources of thermal siphon evaporator:1) use the gas a

Apr 07, 2013

How to realize the extraction of refined nitrogen by total rectification method, and what are its characteristics compared with the hydrofining method?

In the conventional argon production method, the argon content extracted from the distillation column is up to 9% ~ 12% argon fraction, and then condu

Apr 07, 2013

In the start-up stage, what role does the bypass valve from air to sewage and nitrogen pipe play, when to start using and when to close?

In the process of full low-pressure switching air separation plant, a bypass valve is usually installed on the pipeline of the air-out switching heat

Apr 02, 2013

Pay attention to details to promote management promotion

In 2013, Kaifeng DEAR kongfen Industrial Co., Ltd. carried out the activity of "paying attention to details and improving management", and p

Mar 28, 2013

How is the regeneration operation of the purifier?

Molecular sieve purifier in 0.5 ~ Regeneration should be carried out when the adsorption reaches saturation under 0.6MPa. Regeneration operation is di

Mar 28, 2013

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