Low-nitrogen gas boiler burner

Abstract

The invention discloses a low-nitrogen gas boiler burner. The low-nitrogen gas boiler burner comprises a mixing pipeline, an igniter, a metal fiber burning head, a gas flow control loop, an air flow control loop and a ratio meter. The ratio meter is arranged between the gas flow control loop and the air flow control loop, the ratio of natural gas to air can be controlled by adjusting the gas flow control loop and the air flow control loop, thus, the flow rate and ratio of mixed gas are more stable, and the efficiency of the burner and the burning safety of a boiler are improved. A two-stage air supply mode is adopted, and the pressure loss of primary air and fuel gas in a twisted blade mixer is supplemented, the mixedness of the natural gas and the air is improved, the temperature of the metal fiber burning head is lowered, the retention time of smoke in a high-temperature zone is shortened, and generation of NOx is effectively inhibited. Circulation flow occurs inside a flame through air supplied by secondary rotational flow, the uniformity of the flame temperature is improved, and the efficiency of the burner is improved. The low-nitrogen gas boiler burner has high innovativeness and wide practicality.

Description

technical field [0001] The invention relates to a burner, in particular to a low-nitrogen gas boiler burner. Background technique [0002] China's energy consumption structure is mainly based on the three major fossil fuels. In recent years, the consumption of coal and oil has shown a downward trend, while the consumption of natural gas has gradually increased. With the development of natural gas and shale gas around the world, the consumption of gas will continue to rise in the future. At the same time, with the development of the economy, the deterioration of the environment and the depletion of resources, the efficient use of energy and the discharge of pollutants have become important issues. NOx is the main pollutant in the air, which is very harmful to human health and ecological environment. The exhaust gas produced during the combustion process of the boiler is one of the main sources in the air, so the low-nitrogen transformation of the boiler burner is of great s...

AI Technical Summary

Problems solved by technology

In the prior art, the mixing of gas flow and air flow is unstable, resulting in unstable combustion, which not only affects production safety, but also affects thermal efficiency and NOx emissions. Moreover, due to unstable combustion, the control of primary air and combustion components are high.

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