Plate type heat exchanger with gas phase and liquid phase heat exchange and resistance to high pressure

Abstract

The invention relates to a plate type heat exchanger with gas phase and liquid phase heat exchange and resistance to high pressure. The plate type heat exchanger comprises a plurality of heat exchange modules composed of heat exchange plate components, wherein each heat exchange plate component comprises a gas-phase medium heat exchange plate component and a liquid-phase heat exchange plate component; the gas-phase medium heat exchange plate component comprises non-metal heat exchange plates, and supporting ribs are mounted on the surfaces of the non-metal heat exchange plates; sealing strips are arranged at the upper edge and the lower edge of each side of each non-metal heat exchange plate; upper supporting ribs, lower supporting ribs and the sealing strips are respectively fixedly connected among the non-metal heat exchange plates, and the adjacent non-metal heat exchange plates, the sealing strips ad gaskets encircle a plurality of gas-phase medium channels through pressing force; a liquid-phase medium channel is formed in the liquid-phase heat exchange plate component. The plate type heat exchanger has the advantages of the conventional plate type heat exchanger, also recycles waste heat in flue gas of a heating function, and can lower the temperature of flue gas and enable the flue gas to resist to corrosion.

Description

technical field [0001] The invention relates to a plate heat exchanger, in particular to a gas phase and liquid phase heat exchange high pressure resistant plate heat exchanger. Background technique [0002] The plate heat exchanger is a detachable heat exchange device composed of many heat transfer plates pressed by gaskets at certain intervals. Advantages of plate heat exchangers: small size, small footprint; high heat transfer efficiency; flexible assembly; The problem of waste heat in the gas; therefore, air preheaters are generally used in China to recover the waste heat in the flue gas of the heating furnace to preheat the air used for combustion, so as to improve the efficiency of the heating furnace. Due to various deficiencies of the existing air preheater, such as dew point corrosion failure, huge equipment and huge investment, the temperature of the exhaust gas of the existing heating furnace is limited to approximately 160~200°C. At the same time, as the temper...

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Problems solved by technology

[0003] The object of the present invention is to solve the deficiencies of the above-mentioned technical problems, and provide a high-pressure resistant plate heat exchanger for gas phase and liquid phase heat exchange, which has the advantages of compact structure, high pressure resistance, and corrosion resistance, and solves the problem of recycling heating by using plate heat exchangers. Problems with waste heat in furnace flue gas

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