An air curtain type water electrolysis gas igniter for pulverized coal boiler
A pulverized coal boiler and water electrolysis technology, which is applied in the field of boiler combustion, can solve the problems that the burner does not have the function of pulverized coal ignition and has not been raised, so as to enhance safety and stability, reduce consumption, and prevent backfire explosion Effect
Active Publication Date: 2019-07-19
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +3
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Problems solved by technology
The technology of electrolyzing water to produce hydrogen is relatively mature. The Chinese patent with publication number CN101187473A, "Hydrogen-Oxygen Mixed Gas Burner", discloses a hydrogen-oxygen mixed gas burner, but the burner does not have coal powder to ignite Function; the Chinese patent of publication number CN 101532678A, "Brown gas (oxygen hydrogen) ignition system for power station coal-fired boiler", discloses a method for combustion-supporting burner of hydrogen-oxygen coal pulverized coal in a power plant, but the technical solution only simply explains that hydrogen Oxygen is used as the ignition source, and it is not proposed how to achieve it
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[0017] as attached figure 1 As shown, the present invention includes a water electrolyzer 1, a main structure, an air duct and an electric ignition pipeline 2; The secondary air duct 5 on the combustion pipe 4; the air duct includes a primary air duct 6 and a secondary air duct 7; The secondary air duct 7 is installed on the secondary air duct 5 and communicates with its inner cavity, and the water electrolysis gas air curtain heating system connected with its inner cavity is installed on the air inlet pipe 3, and the water electrolysis gas air curtain heating system is located in the upper primary air Between the pipe 6 and the end of the combustion pipe 4; pass through the air intake pipe 3 and install the electric ignition pipeline 2 at the air outlet of the water electrolysis air curtain heating system; The air curtain formed by the water electrolysis gas ejected in the gas solution air curtain heating system intersects vertically; the lower primary air duct 17 is install...
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The invention relates to an air curtain type water electrolysis gas igniter of a pulverized coal fired boiler. The gas igniter comprises a water electrolysis device, a main structure, an air pipe andan electric ignition pipeline; the main structure comprises an air inlet pipe, a combustion pipe and a secondary air pipe which are in inner cavity communication, the air pipe comprises an upper-stageprimary air pipeline and a secondary air pipeline, a water electrolysis gas air curtain heating system in inner cavity communication with the air inlet pipe is arranged on the air inlet pipe, and anair outlet of the water electrolysis gas air curtain heating system is provided with an electric ignition pipeline. Water electrolysis gas can be used after being produced through the water electrolysis device, the defect that a fuel oil ignition device is used for safe maintaining, and occupying cost is high is overcome, three-layer stage-by-stage combustion manner is adopted, through the primaryair upper and lower stage ignition manner, the consumption amount of water electrolysis gas is reduced, the production cost of the water electrolysis device is reduced, and meanwhile, the safety andstability of running of the igniter are improved.
Description
technical field [0001] The invention relates to an air curtain type water electrolysis gas igniter for a pulverized coal boiler, belonging to the technical field of boiler combustion. Background technique [0002] The ignition and low-load operation stages are the operating conditions that must exist for power plant boilers. In these two operating conditions, the temperature of the pulverized coal flow and the ambient temperature are low, and it is difficult to absorb enough ignition heat to achieve stable ignition and combustion. In order to achieve the above purpose, the site generally burns oil and natural gas, which are easy to burn, or adds heat sources such as high-temperature plasma and hot air ignition. [0003] Due to the rise of oil and coal prices, coal-fired power stations currently widely adopt technologies such as low (micro) oil ignition and oil-free plasma ignition, but these technologies have some defects. As far as little (tiny) oil ignition is concerned, ...
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IPC IPC(8): F23Q3/00
CPCF23Q3/008
Inventor 李欣贾永会史洋王天龙刘斌杰
Owner STATE GRID HEBEI ENERGY TECH SERVICE CO LTD