Gas burner with low heating value
A gas burner, low calorific value technology, applied in gas fuel burners, burners, combustion methods, etc., can solve the problems of high concentration of nitrogen oxides and affect the ignition performance of gas, so as to reduce the generation of NOx and reduce the Hot, avoid the effect of high temperature areas
Pending Publication Date: 2020-01-17
YANTAI LONGYUAN POWER TECH
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Problems solved by technology
[0005] The purpose of the present invention is to provide a low calorific value gas burner, which can solve the problem that the existing one-time feeding of combustion-supporting air will affect the ignition performance of the gas and make the gas combustion process always in an oxygen-enriched environment to cause the flue gas formed by combustion The problem of high concentration of nitrogen oxides
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[0025] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings but not all of them.
[0026] like figure 1 As shown, this embodiment provides a low calorific value gas burner, including an ignition pipe 1, a gas pipe 2 and a combustion air pipe that are sequentially sleeved from the inside to the outside; Combustion air pipe 3, and outer combustion air pipe 4 sleeved outside the inner combustion air pipe 3; downstrea...
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The invention relates to the field of combustion equipment and discloses a gas burner with low heating value. According to the gas burner, an internal combustion air pipeline and an external combustion air pipeline are adopted to provide combustion air separately; the combustion air provided by the internal combustion air pipeline is mixed with flue gas in advance to provide oxygen needed at the ignition earlier stage of fuel gas; the external combustion air pipeline provides flue gas to burn out the demanded oxygen so as to realize graded supplementation of the combustion air. The downstreamend face of the internal combustion air pipeline is arranged on the upstream of the downstream end face of the external combustion air pipeline to enable the combustion air provided by the external combustion air pipeline to be mixed with fuel gas in a delayed manner, so that on one hand, the ignition heat demanded by the earlier stage ignition of the flue gas is reduced to facilitate stable ignition of the flue gas with low heating value, and on the other hand, at the combustion earlier stage, the flue gas is at the oxygen-deficient environment, the reducing atmosphere is formed and kept conveniently, a high temperature area is not generated, and the formation amount of NOx is reduced.
Description
technical field [0001] The invention relates to the field of combustion equipment, in particular to a low calorific value gas burner. Background technique [0002] Low calorific value gas has high inert gas content and low calorific value, which has the defects of difficult ignition and poor combustion stability. At the same time, unreasonable combustion organization will form local high temperature and make excessive combustion air stay in the high temperature area for a long time, resulting in the formation of nitrogen Oxide (NOx) content exceeds the standard. A large amount of by-product low calorific value gas is produced in the smelting process of iron and steel enterprises. Under the situation of global energy shortage and increasingly severe environmental pollution, how to realize the effective utilization of low calorific value gas is a crucial issue. The combustion of gas-fired boilers promotes the reasonable and effective utilization of low calorific value gas to ...
Claims
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IPC IPC(8): F23D14/02F23D14/46F23D14/70
CPCF23D14/02F23D14/46F23D14/70
Inventor 张文振刘平初伟李明张超群崔星源刘升飞
Owner YANTAI LONGYUAN POWER TECH