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Introduction and types of heat exchangers
2024-03-13
A heat exchanger is a device that cannot perform heat exchange and transfer during chemical production processes. During the heat exchange process, certain materials have high corrosiveness and oxidizing properties. Therefore, it is required that the material of the heat exchanger has strong corrosion resistance. The classification of heat exchangers is universal: reactors, pressure vessels, condensers, reaction tanks, spiral plate heat exchangers, corrugated tube heat exchangers, plate heat exchangers, spiral plate heat exchangers, shell and tube heat exchangers, volumetric heat exchangers, floating head heat exchangers, tube heat exchangers, heat pipe heat exchangers, steam water heat exchangers, graphite heat exchangers, air heat exchangers, Titanium heat exchangers and heat exchange equipment both require strong corrosion resistance. Diesel engine power generation and boilers are different from them.
Heat exchangers can be made of graphite, ceramics, glass, and other non-metallic materials, as well as stainless steel, titanium, tantalum, zirconium, and other metallic materials. However, graphite, ceramics, glass, and other materials are made from fragile, bulky, poor thermal conductivity, and other defects. Heat exchangers made of rare metals such as titanium, tantalum, and zirconium are too expensive. Stainless steel cannot withstand a large amount of corrosive media and crystals.
In industrial production in petroleum, chemistry, light industry, pharmaceuticals, electricity, and other industries, heat exchangers typically require heating low-temperature fluids or cooling high-temperature fluids to vaporize liquids into steam or condense steam into liquids. These processes are closely related to heat transfer and can be completed through a heat exchanger.
Shell and tube heat exchangers are also known as tube heat exchangers. It is a type of wall to wall heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. The heat exchanger has a simple structure and reliable operation. It can be made of various structural materials (mainly metal materials) and can be used under high temperature and pressure. It is currently one of the more widely used types. Pressure pipelines are also widely used.
Heat exchangers can be made of graphite, ceramics, glass, and other non-metallic materials, as well as stainless steel, titanium, tantalum, zirconium, and other metallic materials. However, graphite, ceramics, glass, and other materials are made from fragile, bulky, poor thermal conductivity, and other defects. Heat exchangers made of rare metals such as titanium, tantalum, and zirconium are too expensive. Stainless steel cannot withstand a large amount of corrosive media and crystals.
In industrial production in petroleum, chemistry, light industry, pharmaceuticals, electricity, and other industries, heat exchangers typically require heating low-temperature fluids or cooling high-temperature fluids to vaporize liquids into steam or condense steam into liquids. These processes are closely related to heat transfer and can be completed through a heat exchanger.
Shell and tube heat exchangers are also known as tube heat exchangers. It is a type of wall to wall heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. The heat exchanger has a simple structure and reliable operation. It can be made of various structural materials (mainly metal materials) and can be used under high temperature and pressure. It is currently one of the more widely used types. Pressure pipelines are also widely used.