System for utilizing flue gas waste heat of coal-fired boiler
A flue gas waste heat, coal-fired boiler technology, applied in the direction of preheating, combustion methods, feed water heaters, etc., can solve the problems of high size requirements of low-temperature economizers, failure to meet cooling requirements, low cooling range, etc., to achieve improved Effective utilization, solving the shortage of installation space, and reducing the effect of flue gas temperature
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[0018] In order to understand the technical solution of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.
[0019] Such as figure 1 The coal-fired boiler flue gas waste heat utilization system shown includes boiler 1, air preheater 2, primary low-temperature economizer 4, electrostatic precipitator 5, induced draft fan 6, secondary low-temperature economizer 7, desulfurization tower 8 and Chimney 9; the flue gas outlet of the boiler 1 is connected with the flue gas inlet of the air preheater 2, and the flue gas outlet of the air preheater 2 is connected with the inlet flue of the first-stage low-temperature economizer 4, The outlet flue of the first-stage low-temperature economizer 4 communicates with the flue gas inlet of the electrostatic precipitator 5, and the flue gas outlet of the electrostatic precipitator 5 communicates with the flue gas inlet of the induced draft fan 6, and the indu...
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