Large air separation FAQ - DEAR Air Separation

What requirements and regulations should be met for the assembly of small air separation unit and large air separation plant？

Air separation plant assembly gauge tube shall meet the following requirements. 1．The gauge tube should be degreased and should be assembled without pressure testing. the gas gauge tube (such as the pressure gauge tube) should not be in contact with cold equipment or cold tubes, and the distance should n...

Dec 17, 2021

Features of the gas separation import trade in China

After years of hard work and innovation, the technical level of Chinese products in the gas separation equipment industry has reached the advanced level and has a certain status in international trade. China's small air separation unit, variable pressure adsorption equipment has basically achieved domestic production, no longer rely on imports, large, very large air separation unit (mainly 60000 m³/h) and some imports, a...

Dec 10, 2021

Principles of heat exchanger channel allocation and arrangement of large air separation unit

The arrangement and distribution of multi-stream heat exchanger channel directly affect the heat transfer effect, and also the key to the design and manufacture of multi-stream heat exchanger and difficult point. All designs should follow certain principles and should not be designed at random. The general principles are: the same wall of the heat exchanger on both sides of the temperature as close as possible; the same flu...

Dec 03, 2021

Safety problems in contact with oxygen

Oxygen is a colorless, odorless, tasteless gas. It's a combustion aid. It can be mixed with combustible gases (acetylene, methane, etc.) in a certain proportion to form explosive mixture. When the oxygen concentration in the air increases to 25%, the active combustion reaction can be excited; When the oxygen concentration reaches 27%, a Mars can develop into a lively flame. Therefore, fireworks should be strictly prohibited in the oxygen workshop a...

Nov 19, 2021

Principles of air purification

Nov 19, 2021

What aspects should be paid attention to in safety of material selection for air separation unit design？

The design of air separation unit includes the manufacturing design of equipment suppliers and the factory design of users. All kinds of safety standards shall be strictly implemented, including equipment manufacturing, building design, fire prevention, shockproof, ventilation, power distribution, lighting, lightning protection, anti-static, pressure vessel, pressure pipeline, gas cyl...

Nov 18, 2021

Minimum reflux ration and maximum reflux ration

Nov 15, 2021

Features of double column process

Nov 12, 2021

Why is there only one argon enrichment zone in the new single column process?

Why is there only one argon enrichment zone in the new column process?

Nov 12, 2021

What are the settings of purification system of air separation unit?

Nov 11, 2021

Working principle of anti-surge device in air compressor

Nov 09, 2021