Low-nitrogen gas-fired boiler synergy and white smoke eliminating integrated heat supply system and regulating and control method

Abstract

The invention discloses a low-nitrogen gas-fired boiler synergy and white smoke eliminating integrated heat supply system and a regulating and control method. The system comprises a boiler room groupcontrol system and at least one heat supply subsystem, wherein each subsystem comprises a gas-fired boiler, a low-nitrogen combustion engine, a gas calorific value detector, an air blower, a horizontal flue, a vertical flue, a flue gas condensation heat energy recovery device, an air preheater, a flue gas-air uniform distribution mixer, an air duct, a flue gas sampling analyzer, a temperature andhumidity sensor, a flue gas white eliminating and defogging section, a flue gas heating uniform distribution section, a boiler subsystem control module and the like. According to the system and the method, not only can the corrosion of backflow flue gas condensation on the air blowers, the low-nitrogen combustion engines and the like after the low-nitrogen transformation of the gas-fired boilers be effectively solved, but also the emission of white smoke mist is effectively reduced, and on the premise of ensuring that a boiler room supplies heat as required, through the overall operation regulating and control method, the high-heat efficiency operation of the boilers is realized, the overall gas utilization efficiency of the boiler room is further improved, and the energy waste and pollutant emission are reduced.

Description

technical field [0001] The invention relates to a low-nitrogen gas-fired boiler efficiency-increasing and whitening integrated heating system and control method, belonging to the technical field of heating and energy saving and emission reduction. Background technique [0002] With the adjustment of the national energy structure and the advancement of urbanization, gas-fired boiler heating has become the main force for heating in key cities and towns in northern my country. Since 2014, the Ministry of Environmental Protection of the People's Republic of China and Beijing and other places have successively issued relevant standards for the emission of air pollutants from boilers, and put forward the emission limits of air pollutants for in-use and newly-built boilers. The low-nitrogen transformation of gas-fired boilers across the country is also continuing Advancement, the thermal efficiency of gas-fired boilers after low-nitrogen transformation is generally reduced, and the...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a low-nitrogen gas-fired boiler to increase efficiency and eliminate whitening in view of the problems of reduced thermal efficiency of gas-fired boilers, serious smoke exhaust, corrosion of reflux flue gas condensate water after low-nitrogen transformation, and lack of overall operation control strategies in boiler rooms. The integrated heating system and control method ensure that the boiler room can operate with high thermal efficiency under the premise of heating on demand, so as to improve the overall gas utilization thermal efficiency of the boiler room, improve the energy management level of heating enterprises, and reduce energy waste and pollution emissions

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