The most commonly used baffle in the traditional heat exchanger is the segmental baffle, which is gradually replaced by the helical baffle in recent years because of the existence of large resistance and pressure drop, flow stagnation, easy fouling, small average temperature difference of heat transfer, easy failure under vibration conditions and other defects. An ideal helical baffle should have a continuous helical surface. Because of the difficulty of processing, wiped film evaporator ,cbd crystallization equipment, the folding willow plate used at present is generally connected by several 1/4 fan-shaped flat plates instead of curved surfaces to form an approximate spiral surface. When baffling, the fluid is in a state of approximate spiral flow. Compared with segmental baffles, such baffles (called discontinuous helical baffles) can reduce the pressure drop by about 45% under the same working conditions, while the overall heat transfer coefficient can be increased by 20% -30%, and the size of the heat exchanger can be greatly reduced under the same heat load. It is not perfect to consider only the heat exchange area and margin. Editor Sum up Being familiar with the types, uses and principles of heat exchangers in the petrochemical industry can effectively avoid the premature damage of heat exchangers, improve the energy efficiency of the petrochemical industry,decarboxylation after extraction, prevent unnecessary shutdown, and avoid the loss of products caused by the problems of heat exchangers. —————————————————————— Disclaimer: The copyright of this article belongs to the original author. If copyright is involved, please contact to delete and return to Sohu to see more. Responsible Editor:. toptiontech.com