Pulsation combustion heating furnace

Abstract

The invention discloses a pulsation combustion heating furnace. Two sets of or more than two sets of intermittent combustors with the same geometric shape are arranged in parallel; the combustors share a fuel gas supply chamber, an air supply chamber and a decoupling chamber; and all smoke pipes are led out of the decoupling chamber. Fuel gas and air are continuously and stably supplied, and the air inlet pipeline is not provided with any valve. The supply pipelines of the fuel gas and the air are arranged mutually vertically, and the diameters (areas) of the fuel gas / air supply chamber and the fuel gas / air pipeline are determined by the chemical equivalent ratio and the flow of the fuel gas / air. A bent tail pipe is provided with a main heated surface of the pulsation combustion heating furnace, and the smoke pipes are provided with accessory heated surfaces. When the pulsation combustion heating furnace runs stably, the pressure pulsation in the decoupling chamber, the air supply chamber and the fuel gas supply chamber forms phase difference of half period, and the running noise can be reduced.

Description

technical field [0001] The invention relates to a pulse combustion heating furnace Background technique [0002] The pulsating burner is a periodic combustion process under the control of certain acoustic conditions. The difference from the conventional steady-state combustion is that the parameters such as pressure, temperature, and speed in the pulsating burner change periodically with time, which is a special non-smooth combustion process. Stabilizes the combustion process. The pulsation burner is widely used due to its advantages of high combustion efficiency, high combustion intensity and low pollutant emission. [0003] The coupling between the pulsating burner systems is very strong, and any slight change in any component will lead to unstable operation of the burner, or even failure to form pulsating combustion. In the currently used pulsating combustion furnaces, the supply of fuel and air is usually controlled by mechanical valves. The pressure pulsation of the p...

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Problems solved by technology

[0003] The coupling between the pulsation burner system is very strong, and any slight change in any component will lead to unstable operation of the burner, or even failure to form pulsation combustion

In the currently applied pulsating combustion furnace, the supply of fuel and air is usually controlled by mechanical valves, and the pressure pulsation of the pulsating burner will cause the vibration of various components, so the existence of the mechanical valve will affect the stability of the overall operation of the burner

Whether the pulsating burner can form stable pulsating combustion depends on the acoustic structure. The increase in the heating surface of the tailpipe will cause the burner to fail to vibrate, making it difficult to enlarge the pulsating burner

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