Design margin of high-pressure heat exchanger for wax oil hydrogenation
Thread Content
The high-pressure heat exchanger used for wax oil hydrogenation is a double-pass heat exchanger. Due to heat transfer at the cold and hot ends, the heat exchange is not strictly counter-current in nature. Moreover, the uneven distribution of gas and liquid phases inside and between the tubes also leads to a reduction in the efficiency of heat exchange. So, what margin should be considered during process calculations?
A margin of 10%~20%.