Immersed low-nitrogen gas combustion device

Abstract

The invention discloses an immersed low-nitrogen gas combustion device. The device comprises a device body, an upper combustor, an ignition gun and a lower combustor, wherein the device body is provided with an upper air inlet, a smoke outlet and a combustion space, the upper combustor is arranged on the upper portion of the device body, the upper combustor is provided with an upper gas inlet andan upper gas nozzle, the ignition gun is arranged on the upper combustor and provided with an ignition gas inlet and a downward ignition gun outlet, the ignition gun outlet and the upper gas nozzle are arranged close to each other, the lower combustor is arranged on the lower portion of the device body and provided with a lower gas inlet pipe and an upward lower gas nozzle, and the lower gas nozzle and the ignition gun outlet are arranged facing each other. According to the device, the lower combustor can be stably ignited, an ignition success rate is improved and reaches up to 100%, the occurrence of a deflagration phenomenon is avoided, an combustion effect is improved, space in a combustion chamber is utilized to the maximum extent, and the overall combustion stability is greatly improved.

Description

technical field [0001] The invention relates to the field of combustion technology, in particular to a submerged low-nitrogen gas combustion device. Background technique [0002] Existing submerged combustion devices generally need to be placed in a water bath during use, so usually a burner is arranged at the bottom of the device, and an ignition device for igniting the burner is arranged at the top of the device to avoid the ignition device Water damage. There is a large distance between the ignition device and the burner up and down, which leads to the failure to ignite the gas injected by the burner in time, which makes ignition difficult and the success rate is not high. Due to the failure to ignite the gas injected by the burner in time, the combustion chamber is filled with a large amount of mixed gas of air and gas, which will further lead to the occurrence of deflagration, bring safety hazards, and lead to incomplete combustion and nitrogen in the flue gas. The pr...

AI Technical Summary

Problems solved by technology

There is a large distance between the ignition device and the burner up and down, resulting in the gas ejected from the burner not being ignited in time, which makes ignition difficult and the success rate is not high

Due to the failure to ignite the gas injected by the burner in time, the combustion chamber is filled with a large amount of mixed gas of air and gas, which will further lead to the occurrence of deflagration, bring safety hazards, and lead to incomplete combustion and nitrogen in the flue gas. The problem of high oxide content; and the pressure pulse in the combustion chamber is large during ignition, so that the stable operation of the entire device cannot be well guaranteed

In addition, the cooling system of the combustion chamber of the existing combustion device is not perfect, resulting in high temperature of the combustion chamber, which further increases the formation of nitrogen oxides in the flue gas, resulting in excessive nitrogen oxide emissions

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