A decoupling gas burner and its use method

A gas burner and decoupling technology, which is applied in the combustion method, combustion using multiple fuels, combustion using block fuel and gaseous fuel, etc., can solve the problems of poor mass transfer, non-flammability, and reduced combustion efficiency.
CN111121005BActive Publication Date: 2021-04-09INST OF PROCESS ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2021-04-09

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Abstract

The invention provides a decoupling gas burner and its use method. The decoupling gas burner includes a central gas pipe arranged coaxially, a primary air cylinder body, a secondary air cylinder body and Outer cylinder body; an annular air chamber is formed between the outer cylinder body and the first-stage air cylinder body, and the end plate of the air chamber is arranged at the end of the air chamber near the furnace; At least one central gas injection hole is arranged on the outer peripheral surface of the pipe end cover; an annular primary air passage is formed between the central gas pipe and the primary air cylinder body, and the end of the primary air passage near the furnace is provided with a primary wind swirl blade; A secondary air channel is formed between the primary air cylinder body and the secondary air cylinder body. The end of the secondary air channel near the furnace is provided with a secondary wind swirl blade, and the end of the secondary air channel is far away from the furnace and connected to the ventilation chamber. The invention adopts a new staged combustion method to reduce thermal NO while ensuring combustion efficiency x generation.
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Description

technical field

[0001] The invention belongs to the technical field of combustion equipment, and relates to a gas burner and its usage method, in particular to a decoupling gas burner and its usage method. Background technique

[0002] For gas that does not contain fuel nitrogen or has low fuel nitrogen content, the method of increasing the excess air coefficient can be used to reduce the combustion temperature, so as to control the thermal NO x generation. However, due to the relatively concentrated injection of gas into the air flow, when the gas is mixed with air at the initial stage of combustion, there will be a transition zone where the stoichiometric ratio of gas and oxygen is close, resulting in the generation of thermal NO at local high temperatures. x , unable to achieve ultra-low emissions. In addition, if the excess air is too large, it will also increase the heat loss of the exhaust gas and the power consumption of the fan, and reduce the energy efficiency. ...

Claims

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