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At present, for large-scale air separation units, what should be the control range for the temperature rise rate from liquid discharge to reheating to normal temperature?

2015-07-18View Original

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As the title suggests, could someone please advise me on how to control the heating rate, and what is the reheating rate below -100°C? What is the reheating rate above -100°C? Who knows the temperature and deformation curve of aluminum alloy pipes?
Reply #22015-07-20
http://bbs.hcbbs.com/thread-722181-1-1.html
Reply #32015-07-20
Could you share some relevant materials and documents?
Reply #42015-07-22
The temperature change should be within 30 degrees Celsius per hour
Reply #52015-07-23
The operating instructions require that the heating rate be kept within 20 degrees~~
Reply #62015-07-24
Are there any **regulatory documents or industry standards, or are there explicit requirements from manufacturers specifying what the limit should be? When operating, we usually control the temperature at around 5 degrees and raise or lower it slowly. It’s better to proceed slowly at this stage. With the overall temperature below -100 degrees, I think the speed can be increased a bit.
Reply #72015-07-24
Let me help you look into it; it depends on the average heating rate, which is usually slower at first and then faster~~
Reply #82015-07-24
The temperature change should be within 5 degrees Celsius per hour
Reply #92015-07-26
The temperature fluctuations remain within 30 degrees Celsius

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