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Air separation FAQ

How should the oxygen valve be operated during operation of the medium pressure oxygen pipeline of the DEAR Air separation plant?
How should the oxygen valve be operated during operation of the medium pressure oxygen pipeline of the DEAR Air separation plant?
Jun 29, 2021
What is nitrogen expansion in DEAR air separation plant? What are its advantages and disadvantages compared with air expansion?
What is nitrogen expansion in DEAR air separation plant? What are its advantages and disadvantages compared with air expansion?
Jun 28, 2021
How is the total heating in cold state of DEAR air separation plant different from that of full heating in hot state, and what is the difference in operation method?
How is the total heating in cold state of DEAR air separation plant different from that of full heating in hot state, and what is the difference in operation method?
Jun 28, 2021
Why do some lower columns of air separation plant pump dirty liquid nitrogen and some lower columns do not pump dirty liquid nitrogen?
Why do some lower columns of air separation plant pump dirty liquid nitrogen and some lower columns do not pump dirty liquid nitrogen?
Jun 25, 2021
How does air separation plant regulate argon purity and argon production?
How does air separation plant regulate argon purity and argon production?
Jun 25, 2021
What is the relationship between the expansion, the air flow into the upper tower and the circulating flow of the air separation plant?
What is the relationship between the expansion, the air flow into the upper tower and the circulating flow of the air separation plant?
Jun 24, 2021
How does air separation plant measure the temperature difference between the hot end, the cold end and the middle of the accumulator?
How does air separation plant measure the temperature difference between the hot end, the cold end and the middle of the accumulator?
Jun 24, 2021
What are the characteristics of steam heating and electric heating equipment used in the regeneration of air separation plant molecular sieve purifier, and what problems should be paid attention to in
What are the characteristics of steam heating and electric heating equipment used in the regeneration of air separation plant molecular sieve purifier, and what problems should be paid attention to in the regeneration operation?
Jun 23, 2021
What are the characteristics of air separation plant structured packing distillation column compared with sieve tray column?
What are the characteristics of air separation plant structured packing distillation column compared with sieve tray column?
Jun 23, 2021
Why can't air separation plant produce pure liquid oxygen by simple heating evaporation?
Why can't air separation plant produce pure liquid oxygen by simple heating evaporation?
Jun 22, 2021
Why is the temperature drop effect of air separation plant expander much greater than that of throttling?
Why is the temperature drop effect of air separation plant expander much greater than that of throttling?
Jun 22, 2021
What should air separation plant pay attention to when using degreaser?
What should air separation plant pay attention to when using degreaser?
Jun 21, 2021
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DEAR News
Learn more DEAR news
Welcome Mr. Tan, Chairman of Henan High tech Industry Chamber of Commerce, and his delegation to visit and guide
2024.04.15
Product 2023 Carbon Verification Report of Kaifeng DEAR Air Separation Industrial Co., Ltd
2024.03.18
Product 2023 Carbon Footprint Report of Kaifeng DEAR Air Separation Industry Co., Ltd
2024.03.18
2023 Corporate Social Responsibility Report
2024.03.18
DEAR Air Separation celebrates ”Women's Day” on March 8th
2024.03.08
DEAR Air Separation won the title of "Provincial Quality Benchmark Enterprise" in 2023
2024.02.26
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