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In order to adapt to the operating conditions of high temperature and high pressure in petrochemical units, the company in early 98 and sinopec luoyang petrochemical engineering company research, development of floating-head type heat changer commonly used thick walled carbon steel or stainless steel pipe horizontal stripes of corrugated tube rolling technology, and the thermal performance test.By changling oil refining chemical complex industrial equipment test, a complete success.Proved by the thick wall horizontal stripes floating-head type of corrugated tube heat exchanger and condenser heat transfer enhancement is to realize the double efficient equipment, very suitable for new and potential in transformation in petrochemical units, for energy saving section provides a new way.
Horizontal stripes bellows (patent number: ZL99216010.3) made from a special equipment for processing, and annealing treatment.Tube is annular corrugated bulge, when the fluid flows through the tube stranded boundary layer is destroyed, the heat transfer effect than light mind a lot, at the same time reduce the formation of scale formation.Outside the tube to form corresponding corrugated surface, not only increase the heat transfer area is slightly also promote the disturbance of the fluid, also to strengthen the heat transfer effect.So bellows finally achieved the purpose of strengthening heat transfer on both sides, compared with ordinary light tube heat exchanger, tube in turbulent flow, the film heat transfer coefficient is about 2.6 times the average aggrandizement, pipe outside the film heat transfer coefficient improved about 1.7 times on average.The total heat transfer rate more than 50% higher than that of ordinary light tube heat exchanger, can reduce the heat transfer area of about 40%, reduce equipment investment bring significant economic benefits to the user.But because the corrugated pipe increased the roughness on the surface of the tube, pipe pressure drop 1.5 times more than the light pipe, casing pressure drop increases by about 30%.If the machine pump capacity allowed under the premise of corrugated tube heat exchanger can undoubtedly greatly improve the effect of heat transfer, bring good economic benefits.
At present the product is applied to petrochemical industry performance over one thousand units.CTHE can complete process design calculation software for design, production and manufacturing departments.
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