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A natural gas low nitrogen oxide vortex dispersion burner

A low-nitrogen oxide, diffuse combustion technology, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve the problems of low tail flue gas temperature, fan failure, etc., to reduce combustion temperature, reduce burnout time, The effect of raising the temperature of natural gas

Active Publication Date: 2021-02-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in today's circulating flue gas technology, there is a problem that the flue gas temperature at the tail is too low, causing the water in the flue gas to condense and absorb heat, making the fan unable to work normally.

Method used

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  • A natural gas low nitrogen oxide vortex dispersion burner

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 The shown natural gas pressure equalization chamber (1) is connected with an ignition chamber (2), and the ignition chamber (2) is connected with the first-stage swirl pre-combustion chamber (3), and the first-stage swirl pre-combustion chamber (3) ) is connected to the second-stage swirl pre-combustion chamber (4) at the rear, and the diameter of the second-stage swirl pre-combustion chamber should be greater than the diameter of the first-stage swirl pre-combustion chamber; the gas boiler (10) includes a boiler furnace (7 ), flue gas reheater (8), convection and tail heating surface (9); said second-stage swirl pre-combustion chamber (4) is directly connected with the boiler furnace (7) of gas boiler (10); said The front of the flue gas reheater (8) is connected to the boiler furnace (7), and the rear is connected to ...

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Abstract

The invention discloses a natural gas low-nitrogen oxide vortex dispersion burner, which comprises two stages of swirl pre-combustion chambers with different diameters. In the first-stage swirling pre-combustion chamber, all the gaseous fuel is fed from the end of the pre-combustion chamber, and 50% of the total oxygen and 50% of the recirculated flue gas are fed in at the same time to produce fuel-rich diffuse combustion. The second-stage pre-combustion chamber feeds 50% of the total oxygen and 50% of the recirculated flue gas, so that it is strongly mixed with the flue gas generated from the first-stage swirl pre-combustion chamber and contains a large amount of unburned natural gas. And produce diffuse combustion. The natural gas low nitrogen oxide burner includes a flue gas reheater, and the flue gas reheater heats the circulating flue gas and then sends it back to the swirl pre-combustion chamber to reduce the combustion temperature. The beneficial effect of the invention is to solve the problem of high nitrogen oxide emission content in the current natural gas burner.

Description

technical field [0001] The invention relates to the field of low-nitrogen combustion, in particular to a novel natural gas low-nitrogen vortex dispersion burner. Background technique [0002] China is in the stage of rapid economic development, the demand for energy is increasing rapidly, and the environmental problems caused by it are also becoming more and more serious. However, there are problems such as low efficiency, serious pollution, and serious waste in energy utilization. Therefore, it is imperative to improve the energy structure and increase energy utilization. [0003] Despite the increased use of renewable energy in recent years, fossil fuels are still the best choice for existing combustion technologies due to their availability and cost advantages. Liquid and solid fossil fuels remain economically and environmentally problematic, thus promoting the industrial use of natural gas as a clean alternative fuel. The main chemical component of natural gas is metha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C6/04F23C9/06
CPCF23C6/04F23C9/06
Inventor 翟明邹旬金帅张一弛董芃
Owner HARBIN INST OF TECH
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