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Decline in heat transfer performance of heat exchangers for liquid air separation units

Decline in heat transfer performance of heat exchangers for liquid air separation units
In addition, the heat transfer temperature difference between the hot and cold fluid also has an impact on the temperature distribution of the heat exchanger, the greater the temperature difference, intensifying the difference in heat transfer between the different flow channels of fluid, is the heat exchanger channel between the axial and circumferential guide heat increases, resulting in an increase in the temperature distribution parameters of each section.
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Small air separation plant KDON-10000/10000 solution for metallurgical industry
The metallurgical industry has its unique industry characteristics and high requirements for oxygen purity. DEAR air separation has cooperated with domestic and foreign metallurgical industry customers in many projects, has rich project experience, and has continuously invested funds to develop energy-saving and intelligent air separation plant. KDON-10000/10000 is highly praised by customers for its high efficiency and stable operation.
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What are the requirements for safety technology management of gas cylinder filling units
Apr 25, 2025
The start-up phase of the whole low-pressure oxygen generator is that liquid empty appears first in the lower tower, and then liquid oxygen appears in the upper tower. The cold energy needed to accumulate liquid in the tower mainly comes from the expansion machine, which uses the low temperature gas after expansion to make part of the air liquefaction in the liquid purifier. But the upper tower itself can not produce liquid, it mainly depends on the liquid from the lower tower into the upper tower. In the phase of hydrops, in order to accumulate the liquid level as soon as possible, the cooling volume should be transferred to the tower as much as possible, the phenomena of overcooling, temperature difference at the hot end and cold loss increase caused by excess cooling of switching heat exchanger should be avoided. As for how to recycle and transfer the cold volume of the air expansion into the tower, whether it is by the liquid purifier to transfer the cold volume to the lower tow...
Apr 15, 2025
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