High-temperature corrosion-resistant stainless steel tube type heat exchanger condenser

In all of the heat exchanger unit, shell and tube heat exchangers in the design, manufacturing advantages of widely used in industrial production, it is estimated that a shell and tube heat exchanger about 80% of the total production of the heat exchanger. So far, the development of a variety of types of highly efficient shell and tube heat exchangers, such as helical baffle heat exchanger, ribbed tube heat exchanger, corrugated tube heat exchangers, spiral corrugated tube heat exchanger. Pipe heat exchanger as a special structure of shell and tube heat exchanger, with a variety of simultaneous heat transfer medium, compact unit volume has a larger heat transfer area, no thermal expansion problems and the small temperature difference load conditions has the characteristics of good heat transfer properties. And ordinary shell and tube heat exchanger relatively compact heat exchangers Pipe mainly in unit volume has a larger heat transfer area. For diameter of 8 to the heat transfer area of ??the heat transfer tube 21mm up to 100 ~ 170m2 / m3; while ordinary shell and tube heat transfer area of ??the heat exchanger is only 54 ~ 77m2 / m3, is spiral wound heat exchanger 45% or so. Conventional shell and tube heat exchanger baffles plays to change the fluid flow direction and the role of the support tube. Conventional segmental baffle heat exchangers, shell-side fluid into a Z-shaped bend of the flow, but there are some problems that baffle arrangement: (1) the pressure drop along the large, easy to produce flow stagnation dead zone; (2) bypass and drain flow reduces the effective mass flow rate ACROSS bundle; (3) high heat exchange fluid flow-induced vibration and shorten the life of the heat exchanger. Therefore, many studies have committed to changing the traditional form of baffle structure. According to the survey, more than 90% of the ordinary shell and tube heat exchangers are varying degrees of scaling problems, resulting in poor performance of heat transfer, heat transfer efficiency decreased, the decline in average up to 30%. In addition to the direct energy losses, it will also lead to the production of plant operation and reduce the load, affecting the production capacity of complete sets of equipment. Further, the device can also cause fouling resistance to fluid flow increases, leading to increased device power consumption. Parking periodic cleaning, but also increase the running cost of the apparatus. For the spiral wound heat exchanger tubes are in a spiral manner by reducing the possibility of fouling tendency and wall attachment. Countercurrent fluid in the shell around the tube by transverse cross between adjacent tubes, continuous separation and convergence between the layers, so that the turbulence of the housing of the fluid strengthen, at the same flow rate also reduces the chances of deposition. For a suitable fluid (usually free of particles and fibers fluid), Pipe tube heat exchanger shell exhibited good resistance to dirt, to ensure the long cycle of the equipment, high-load operation. Condensation heating Han Zun threaded screw cooling tube heat exchanger 1 main application areas of the pharmaceutical industry injection, flushing system, condensation, etc. 2 intermediate chemical various intermediates, cooling, heating and other three oil industry various oils heating and cooling products, condensed overhead gas plant cooling water system 4 Chemical Industry various inorganic acids, bases, salts of heating, cooling and other industrial metallurgical coke battery 5 directly or indirectly chiller system, a variety of liquid metal 6 food industry raw materials and finished food heating and cooling, process equipment washing system of the heating and cooling, part of the cooling liquid food technology