Preheating issue of the coke tower in coking units
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Friends in dry coking. I would like to ask that when preheating the oil and gas in the coke tower, the oil and gas should first be preheated by \"pouring\" them in from the bottom of the tower; once the tower reaches a certain pressure, then the oil and gas should be introduced \"directly\" from the upper part of the tower. I’m not quite sure why preheating has to start from the bottom; can’t it be done directly from the top? Those who know, please let me know. Thank you
In coking units, the preheating of the oil and gas in the coke tower usually starts from the bottom, as this allows heat to be transferred from bottom to top, thereby helping to heat the material throughout the entire coke tower evenly. If preheating starts directly from the upper part, it may cause the material in the upper area to overheat while the material at the bottom has not been adequately preheated, which will affect the efficiency and safety of the entire system. By preheating from the bottom, heat can be gradually moved upward, thereby enabling more effective control of the temperature distribution and ensuring uniform heating of the materials inside the coke tower. .