Axial rotational flow stepless regulation low-nitrogen combustor

Abstract

The invention discloses an axial rotational flow stepless regulation low-nitrogen combustor in the field of combustors. The combustor comprises an oil gun, a center air pipe, a gas pipe, a coal air pipe and an axial flow air pipe which are arranged from inside to outside in a sleeved manner; a gas channel is formed between the gas pipe and the center air pipe, a rotational flow air adjusting mechanism is arranged in the gas channel and comprises a plurality of rotational flow air adjusting fan plates evenly arranged on the periphery of the center air pipe, the rotational flow air adjusting fan plates are mounted on the periphery of the center air pipe through positioning screws, and can swing around the positioning screws, the tails of the rotational flow air adjusting fan plates are connected to a rotational flow air adjusting ring through flexible shafts, the rotational flow air adjusting ring is rotatably arranged on the periphery of the center air pipe in a sleeving manner, and the tail of the rotational flow air adjusting ring is connected with a first adjusting rod used for controlling the rotational flow air adjusting ring to rotate. The rotational flow air outlet air speed adjusting and blade angular stepless adjusting are achieved, the combustor meets the requirements of different stations for the rotational flow strength and the rotational flow angle of the combustor, and the combustor can be used for work of combustion of various kinds of industrial furnaces.

Description

technical field [0001] The invention relates to a burner, in particular to a burner nozzle. Background technique [0002] With the development of industry and the intensification of industrial pollution, the environmental protection of industrial combustion equipment has attracted more and more attention, and the industry's requirements for energy saving and emission reduction performance of industrial combustion equipment have also been continuously improved, which puts forward the structural design of industrial combustion equipment. new requirements. Because industrial furnaces require the burner to maintain a suitable and stable flame diameter and flame length when burning fuels of different media, and at the same time require the pollutants emitted by it to be kept at a low level. [0003] In the prior art, there is a multi-media multi-channel discrete low-NOx pulverized coal burner for cement rotary kiln. Its publication number is: CN 101556041A, and its patent applic...

AI Technical Summary

Problems solved by technology

It enhances the entrainment ability of the axial flow to the secondary air through discretely arranged Rafal tube nozzles, and adjusts the swirling air flow through the upstream valve. The Rafal tube nozzle itself does not have the ability to adjust the axial flow. The swirl angle of the flow air cannot be adjusted, and the sufficient mixing of fuel and air cannot be guaranteed when the working conditions change

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