Multi-flame split type low-nitrogen combustor

Abstract

A multi-flame split type low-nitrogen combustor comprises a flame tube, a combustion head, a pulley guide rail, a positioning fastening screw, a flame monitor and an air bellow; the rear end of the flame tube and the front end of the air bellow are installed together, the front end of the flame tube is located in a boiler hearth, and the rear end of the air bellow is connected with an external fan and an air volume adjusting mechanism; the pulley guide rail is installed at the inner upper end of the flame tube, a pulley assembly is installed in the pulley guide rail, a lower connecting rod of the pulley assembly and one side outside the upper end of a gas distribution pipe of the combustion head are installed together, a positioning fixing column is installed on the other side outside the upper end of the gas distribution pipe of the combustion head, the lower end of the positioning fastening screw rod is connected with the positioning fixing column; and the flame monitor is installed on the outer side of the flame tube. Flue gas external circulation is not adopted, only flame staged and segmented combustion is adopted, the requirement that the NOX emission is smaller than 50 mg / Nm < 3 > can be met, and the combustion efficiency is improved. On the basis, the multi-flame split type low-nitrogen combustor has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of burner equipment, in particular to a multi-flame split low-nitrogen burner. Background technique [0002] With the implementation of the new national standard for flue gas emissions from boiler burners, low-nitrogen burners have become a standard requirement in the market, but the requirements for low-nitrogen emission standards are different in different regions. For example, Beijing requires NO X ≤30mg / m 3 , while Shanghai requires NO X ≤50mg / m 3 , so for different index requirements, the technical route adopted by the burner will be different. In order to meet the requirements of different indicators, the existing burners generally adopt the method of flue gas external circulation plus staged and segmented combustion, but the use of flue gas external circulation will inevitably lose part of the thermal efficiency of the boiler, and the energy saving effect is slightly poor. Based on the above, it i...

AI Technical Summary

Problems solved by technology

In order to meet the requirements of different indicators, the existing burners are generally implemented by means of external flue gas circulation plus staged and segmented combustion, but the use of external flue gas circulation will inevitably lose part of the thermal efficiency of the boiler, and the energy saving effect is slightly poor

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