High corrosive and high viscosity conductive medium electric heating device

Abstract

The invention relates to the technical field of heat exchange, in particular to an electric heating device for a high-corrosivity and high-viscosity conducting medium. The electric heating device for the high-corrosivity and high-viscosity conducting medium comprises a pipe body 1, wherein the pipe body 1 is provided with an inlet end 2 and an outlet end 3; a plurality of electrode groups are arranged in the pipe body 1; and the power of each electrode group is successively reduced from the inlet end to the outlet end. The electric heating device for the high-corrosivity and high-viscosity conducting medium, which is disclosed by the invention, directly heats by the inside conducting medium, the temperature of the electrode is not too high, so that the electric heating device has a small possibility of scaling. Meanwhile, the fluid medium is heated from inside by self instead of heating the fluid medium from outside by electrode heating, and therefore the heat efficiency is high.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to an electric heating device for a highly corrosive and high-viscosity conductive medium. Background technique [0002] In the field of heat exchanger technology, there are often occasions where highly corrosive and high-viscosity conductive media need to be heated, such as heating fields such as coal-water slurry and sludge. These media are either highly corrosive or high-viscosity, but they need to be heated , if a traditional heat exchanger or electric heater is used, the tube body is easily corroded and the service life is not long. In addition, the flow rate of the medium with high viscosity is very slow, the heat on the electric heating tube is not easy to take away, and the surface temperature of the electric heating tube is easy to overheat, which makes the medium scale on the surface of the tube body, affects the heat transfer of the tube body, and makes the tube tem...

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Problems solved by technology

[0002] In the field of heat exchanger technology, there are often occasions where highly corrosive and high-viscosity conductive media need to be heated, such as heating fields such as coal-water slurry and sludge. These media are either highly corrosive or high-viscosity, but they need to be heated , if a traditional heat exchanger or electric heater is used, the tube body is easily corroded and the service life is not long

In addition, the flow rate of the medium with high viscosity is very slow, the heat on the electric heating tube is not easy to take away, and the surface temperature of the electric heating tube is easy to overheat, which makes the medium scale on the surface of the tube body, affects the heat transfer of the tube body, and makes the tube temperature excessive High, will also shorten the service life of heating equipment, and traditional heat exchangers or electric heaters are not effective in heating these high-viscosity media as a whole, and it is very difficult to implement heating

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