Spiral plate heat exchanger used for organic waste gas treatment

Abstract

The invention discloses a spiral plate heat exchanger used for organic waste gas treatment. The spiral plate heat exchanger used for organic waste gas treatment comprises two spiral heat exchange plates which are arranged in a spaced manner. An outer wrapping plate is arranged on the outer side of each spiral heat exchange plate. The inner spiral ends of the two spiral heat exchange plates are connected through a partition plate. The gap between the two spiral heat exchange plates is divided by the partition plate into a spiral cold channel and a spiral hot channel. The inlet end of the cold channel is connected with a cold gas inlet and the inlet end of the hot channel is connected with a hot gas inlet. A filtering net and a flow stabilizer are installed at the positions of the cold gas inlet and the hot gas inlet and are arranged in a front-back manner in the gas moving direction. The outer spiral end of each of the two spiral heat exchange plates is provided with a leakage preventing device for preventing gas leakage. The spiral plate heat exchanger is simple in structure, reasonable in design and convenient to operate, the filtering net and the flow stabilizer are installed at the positions of the cold gas inlet and the hot gas inlet for filtering out impurities of gas and stabilizing the flowing speed of the gas, and the heat exchange performance of the spiral heat exchanger is improved.

Description

technical field [0001] The invention relates to the technical field of organic catalytic combustion equipment, in particular to a spiral plate heat exchanger for organic waste gas treatment. Background technique [0002] Catalytic combustion is an organic waste gas treatment process, which refers to the rapid oxidation of hydrocarbons in organic waste gas into water and carbon dioxide under the action of a catalyst to achieve the purpose of treatment. For the commonly used platinum-palladium catalyst, the temperature of the catalytic combustion chamber generally needs to be above 280-300°C to achieve a high removal rate of organic pollutants. However, for projects where the exhaust gas source is at room temperature, a lot of heat needs to be wasted to heat the exhaust gas to a suitable temperature. At present, the spiral heat exchanger is used to recover the heat of the exhaust gas after catalytic combustion and use it to heat the exhaust gas to be treated, which can greatl...

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Problems solved by technology

[0003] The structure of the traditional spiral heat exchanger is complicated. Since the inner spiral ends of the two spiral heat exchange plates are welded to the partition plate, the stress at their connection is relatively large. Under the action of medium pressure or high pressure cold and heat medium, It is easy to be damaged; and due to the welding quality, the connection is easy to leak; in addition, because there are two welds to be welded, the manufacturing process is complicated and the cost is high

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