Adjustable boiler air preheating system and method integrating heat regeneration and waste heat utilization
A technology of air preheating and air preheater, which is applied in the direction of preheating, combustion methods, steam application, etc., and can solve the problems of high cost, complexity, and large equipment investment in water production
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[0095] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0096] A new type of adjustable boiler air preheating system for comprehensive heat recovery and waste heat utilization proposed by the present invention, as attached figure 1 As shown, the main equipment of the system includes:
[0097] Air heater 2 before air preheating, flue gas cooler 7 after emptying, large condensate circulation branch pipe 9, condensate water circulation main pipe 12, condensate water main pipe 20, condensate small circulation branch pipe 24, low temperature stage low pressure heater 17 and high temperature stage Low pressure heater 15;
[0098] Both the air passage 25 and the flue gas passage 26 are connected to the air preheater 8; the flue gas in the flue gas passage 26 transfers part of the heat to the air in the air passage 25 through the air preheater 8;
[0099] The pre-empty air heater 2 is arranged o...
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