Self-backheating swirling burner for fuel gas with low heat value

Abstract

The invention discloses a self-backheating swirling burner for a fuel gas with a low heat value. The structure comprises an outer barrel of a burner, an inner tube of the burner and a swirling generation device, wherein the outer barrel of the burner and the inner tube of the burner are coaxially configured, and the swirling generation device is arranged in the inner tube of the burner. The self-backheating swirling burner is characterized in that combustion air exchanges heat with the high-temperature smoke of a combustion chamber by virtue of an inner pipe wall to improve the temperature of the combustion air; and then after the combustion air enters a mixing chamber to be mixed with the fuel gas with a low heat value, the mixture begins rotating by virtue of the swirling generation device to obviously improve the combustion stability of the fuel gas with a low heat value to realize complete combustion. The burner can be applied to the technical field of thermal power engineering, can fully utilize various types of fuel gases generated in the industrial processes, such as metallurgy, petrochemical industry, biomass pyrogenation, waste gasification treatment and the like, and also can be used for burning a common fuel gas.

Description

technical field [0001] The invention relates to a gas combustion device, in particular to a self-regenerating low calorific value gas swirl combustion device, which can be applied to the fields of energy, environmental protection, chemical industry and the like. Background technique [0002] Due to low calorific value, complex composition and scattered sources, low calorific value gas has great differences in combustion characteristics. Generally, low calorific value gas is difficult to achieve stable combustion by relying on its own calorific value, so it is often incompletely burned, and the flue gas contains a high concentration of harmful gases, which not only affects energy utilization efficiency, but also causes environmental pollution. The existing low-calorific-value gas combustion often requires the addition of high-calorific-value gas to achieve stable combustion, which greatly reduces the economic benefits of these high-calorific-value gases. Contents of the inv...

AI Technical Summary

Problems solved by technology

Generally, low calorific value gas is difficult to achieve stable combustion by relying on its own calorific value, so it is often incompletely burned, and the flue gas contains a high concentration of harmful gases, which not only affects energy utilization efficiency, but also causes environmental pollution

The existing low calorific value gas combustion often needs to add high calorific value gas to achieve stable combustion, which greatly reduces the economic benefits of these high calorific value gases

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