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Natural gas low-nitrogen oxide vortex dispersion combustion engine

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 reducing emissions

Active Publication Date: 2019-10-15
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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  • Natural gas low-nitrogen oxide vortex dispersion combustion engine
  • Natural gas low-nitrogen oxide vortex dispersion combustion engine

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 The natural gas pressure equalization chamber 1 shown is connected to an ignition chamber 2, the ignition chamber 2 is connected to the first-stage swirl pre-combustion chamber 3, and the rear of the first-stage swirl pre-combustion chamber 3 is connected to the second-stage swirl The pre-combustion chamber 4 and the second-stage swirling pre-combustion chamber 4 are directly connected to the gas boiler 10; the gas boiler 10 includes a boiler furnace 7, a flue gas reheater 8, and a convection and tail heating surface 9. The front of the flue gas reheater 8 is connected to the boiler furnace 7, and the rear is connected to the convection and tail heating surface 9; the convection and tail heating surface 9 is connected to the boiler induced draft fan 11, and the boiler induced draft fan 11 is respectively connected to the...

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Abstract

The invention discloses a natural gas low-nitrogen oxide vortex dispersion combustion engine. The combustion engine comprises two stages of vortex precombustion chambers with different diameters. According to the first-stage precombustion chamber, all gaseous fuel is fed from the end part of the first-stage precombustion chamber, and 50% of total oxygen and 50% of recirculated flue gas are simultaneously fed to generate fuel-rich dispersed combustion; and 50% of the total oxygen and 50% of the recirculated flue gas are fed to the second-stage precombustion chamber so as to be intensively mixedwith flue gas containing a large amount of uncombusted natural gas and generated from the first-stage precombustion chamber and generate the dispersed combustion. The natural gas low-nitrogen oxide vortex dispersion combustion engine comprises a flue gas reheater, wherein the flue gas reheater heats circulating flue gas and then returns the circulating flue gas to the vortex precombustion chambers, so that the combustion temperature is reduced. The combustion engine aims to solve the problem of the high nitrogen oxide emission content in a conventional natural gas combustion engine.

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 Applications(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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