High temperature gas heating device and processing method
A heating device and high-temperature gas technology, which is applied in the field of heat exchange, can solve the problems of reducing the service life of the heating device, high surface temperature of the electric heating tube, and low thermal radiation coefficient, and achieve the effect of improving the service life and good wear resistance
Active Publication Date: 2016-01-20
无锡华能电热器材有限公司
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Problems solved by technology
[0002] In the case of high-temperature gas heating, in order to improve the emissivity coefficient of the surface of the electric heating tube, the common method is to treat the heating tube with the method of atmosphere blackening or chemical blackening, but the disadvantage of this type of product is that the wear resistance of the blackened layer is poor, The porosity is large, and it is easy to be damaged under the impact of high-temperature gas flow velocity. At the same time, the thermal radiation coefficient of traditional products is low, resulting in high surface temperature of the electric heating tube, which further reduces the service life of the heating device
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[0015] Such as figure 1 As shown, the present invention includes an electric heating tube 1, the surface of the electric heating tube 1 is provided with a black ceramic layer 2, and the black ceramic layer 2 is composed of the following components in mass percentage: 60% to 80% alumina, 2 %~10% black pigment, the remaining components are water-soluble solvents, and the sum of the mass percentages of the above components is 100%.
[0016] The present invention also provides a processing method for a high-temperature gas heating device, comprising the following steps:
[0017] Step 1, mix aluminum oxide, black pigment and water-soluble solvent in proportion and stir evenly to form a mixed solution. The black pigment can be carbon black, aniline black, etc., and the water-soluble solvent can be alcohol, carbon tetrachloride solvent Wait.
[0018] Step 2, cleaning the surface of the electric heating tube 1 after sandblasting;
[0019] Step 3, paint the mixed solution on the sur...
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Abstract
The invention relates to the technical field of heat exchange, in particular to a high temperature gas heating device and a processing method. The high temperature gas heating device comprises an electrical heating tube 1, wherein the surface of the electrical heating tube 1 is provided with a black ceramic layer 2; the black ceramic layer 2 consists of the following components in percentage by mass: 60 to 80 percent of alumina, 2 to 10 percent of black pigment and the balance of water-soluble solvent, and the sum of the mass percentage of the components is 100 percent. The high temperature gas heating device is suitable for the field of improving the radiation coefficient of the surface of the electrical heating tube, and has the characteristic of long service life.
Description
technical field [0001] The invention relates to the technical field of heat exchange, in particular to a high-temperature gas heating device and a processing method. Background technique [0002] In the case of high-temperature gas heating, in order to improve the emissivity coefficient of the surface of the electric heating tube, the common method is to treat the heating tube with the method of atmosphere blackening or chemical blackening, but the disadvantage of this type of product is that the wear resistance of the blackened layer is poor, The porosity is large, and it is easy to be damaged under the impact of high-temperature gas flow velocity. At the same time, the thermal radiation coefficient of traditional products is low, resulting in high surface temperature of the electric heating tube, which further reduces the service life of the heating device. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high...
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IPC IPC(8): H05B3/40H05B3/14C04B35/10
Inventor 戚洪明
Owner 无锡华能电热器材有限公司