Horizontal type phase-change heat exchanger
A phase-change heat exchanger, horizontal technology, applied in the direction of indirect heat exchangers, lighting and heating equipment, etc., can solve the problem of limited space and layout range, to increase flexibility, save space, and overcome easy dust accumulation Effect
Active Publication Date: 2012-04-04
张志宇
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Problems solved by technology
However, due to structural reasons, the heating surface of the phase change section must be arranged on the horizontal flue, which limits the range of space that can be arranged.
Therefore, the prior art cannot meet the requirement of ensuring the minimum wall surface temperature and making full use of excess heat.
Method used
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[0014] Such as figure 1 , 2 As shown, a horizontal phase-change heat exchanger includes a heat release section 9 with a low-temperature water inlet 19 and a high-temperature water outlet 20, a horizontal arrangement connected to the heat release section 9 and a heat exchanger at an angle α to the horizontal plane. The heat absorption section 16 composed of heat pipe bundles is characterized in that: the heat release section 9 is provided with a water injection pipe 4, and a U-shaped tube bundle 22 connected with a low temperature water inlet 19 and a high temperature water outlet 20 is installed in the heat release section 9, The heat release section 9 is provided with an ascending pipe interface 17, and the ascending pipe interface 17 is connected with an ascending pipe 13, and the ascending pipe 13 is connected with the right communicating pipe 15, and the right communicating pipe 15 is connected with the heat absorbing section 16, and the heat absorbing section 16 It is co...
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The invention relates to a horizontal type phase-change heat exchanger which comprises a heat releasing section and a heat absorbing section, wherein the heat absorbing section comprises a horizontal heat exchange tube bank which is communicated with the heat releasing section and forms an angle a with the horizontal plane. The heat releasing section is provided with a water injecting tube, and aU-shaped tube bank communicated with a low-temperature water inlet and a high-temperature water outlet is installed in the heat releasing section. The heat releasing section is provided with an ascending tube faucet, and the ascending tube faucet is connected with an ascending tube. The ascending tube is connected with a right communicating tube, the right communicating tube is connected with theheat absorbing section, the heat absorbing section is connected with a left communicating tube, the left communicating tube is connected with a descending tube, and the descending tube is connected with a descending tube faucet arranged on the heat releasing section. The low-temperature water inlet is connected with a low-temperature water inlet tube, and the high-temperature water outlet is connected with a high-temperature water outlet tube. A bypass water tube is connected between the low-temperature water inlet tube and the high-temperature water outlet tube, a self-controlled regulating valve is installed on the bypass water tube and is connected with a controller through conducting wires, and the controller is connected with a thermodetector arranged on the descending tube through conducting wires. The horizontal type phase-change heat exchanger can be use for substituting a tube type air preheater, a heat tube type air preheater, an economizer and a compound phase-change heat exchanger.
Description
technical field [0001] The invention relates to the field of heat exchangers, in particular to a horizontal phase-change heat exchanger used in boilers, chemical industry and industrial furnaces. Background technique [0002] It is well known that due to the SO in boiler flue gas 3 The exit flue gas temperature of the tail heating surface air preheater is limited. If the exhaust gas temperature is too low, it will lead to serious dew condensation corrosion and ash blocking because the minimum wall temperature of the heating surface is lower than the acid dew point of the flue gas. Therefore, the design exhaust temperature of the boiler should not be too low. The design exhaust temperature of the tubular air preheater is usually 140°C to 160°C or higher; the design exhaust temperature of the rotary air preheater is usually 130°C to 140°C. ℃. Even so, the corrosion and dust blocking phenomenon of the heating surface are still unavoidable. The minimum wall temperature of th...
Claims
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IPC IPC(8): F28D15/02
Inventor 张志宇
Owner 张志宇