Low-nitrogen condensation type double-hearth gas boiler system

Abstract

The invention provides a low-nitrogen condensation type double-hearth gas boiler system, and belongs to the technical field of environmental protection equipment. The system solves the problems that an existing gas boiler is poor in energy-saving effect during use and the like. The system comprises hearths, a convection chamber, anti-explosion door devices, a waste heat recovery energy-saving device and a low-nitrogen combustion device, an upper boiler barrel and a lower boiler barrel are arranged on the upper part and the lower part of the convection chamber correspondingly, a convection tubebundle is arranged between the upper boiler barrel and the lower boiler barrel in a connecting mode, each hearth comprises a main hearth and an auxiliary hearth which are separated from each other, the main hearth and the auxiliary hearth of each hearth are provided with a main combustor and an auxiliary combustor correspondingly, the main hearths and the auxiliary hearths communicate with the convection chamber, the anti-explosion door device is arranged on the outer wall of each main hearth, the waste heat recovery energy-saving device is in butt joint with the convection chamber to be usedfor recycling waste heat of the flue gas to be discharged, and the low-nitrogen combustion device can enable the fuel to be sufficiently combusted. According to the system, the problem of boiler energy efficiency caused by large load fluctuation of users can be well solved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a low-nitrogen condensing gas boiler system with double furnaces. Background technique [0002] With the rapid development of social economy, boilers are widely used in modern industry, electric power and people's life as process equipment for producing heat and power, and gas-fired boilers satisfy people's requirements for environment, safety, Automation requirements, so many projects have adopted gas boilers as their heating equipment. [0003] Gas boiler includes two systems of gas combustion equipment and boiler body. Gas combustion equipment mainly refers to the furnace and burner, and also includes other equipment related to the combustion process. Its main function is to pass a certain amount of combustible gas and air into the combustion equipment, and convert chemical energy into thermal energy through the combustion of combustible...

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Problems solved by technology

[0004] However, there are some problems in the use of existing boilers: 1. Due to the increasingly strict emission of exhaust gas from boilers in the country, the pollution discharge of nitrogen oxides affects its scope of use; 2. Poor energy saving effect and low thermal efficiency; 3. Due to various reasons, gas boiler explosion accidents occur frequently, which not only cause a lot of economic losses, but also seriously threaten people's physical, mental and even life; 4. The boiler automation level is low, which cannot meet the purpose of energy saving and emission reduction

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