Pulverized coal gasification coke-removing burner

Abstract

The invention discloses a pulverized coal gasification coke-removing burner. The pulverized coal gasification coke-removing burner comprises a gasification furnace, a burning chamber, a furnace top fire guide pipe, an air blower, one or a plurality of powder and air supply openings, one or a plurality of temperature sensors as well as a deslagging device, wherein the burning chamber is arranged on the top of the gasification furnace; the furnace top fire guide pipe is installed on the top wall of a gasification furnace in a matching manner, penetrates through the center of the top wall of the gasification furnace, and reaches the burning chamber; the air outlet of the air blower faces the furnace top fire guide pipe, and the air blower is arranged above the gasification furnace; the one or the plurality of powder and air supply openings are formed in the furnace wall of the gasification furnace; the one or the plurality of temperature sensors are installed on the lateral wall of the gasification furnace in a matching way; the deslagging device is obliquely installed on the bottom of the gasification furnace. The pulverized coal gasification coke-removing burner provided by the invention can overcome the defects of low pulverized coal burn-off rate, low heat exchange rate, poor environmental-friendliness and the like in the prior art so as to achieve the advantages of high pulverized coal burn-off rate, high heat exchange efficiency and good environmental-friendliness.

Description

technical field [0001] The invention relates to the technical field of combustion equipment, in particular to a pulverized coal gasification reef removal burner. Background technique [0002] In my country's energy structure, coal-fired accounts for as high as 60-70%. The burnout rate and thermal efficiency of traditional coal-fired boilers are very low. Therefore, the use of pulverized coal is an effective way to save energy and reduce consumption. With some defects, in today's increasingly severe environmental protection situation, the development of new pulverized coal gasification combustion equipment is very important for energy saving and emission reduction. [0003] The problems of traditional pulverized coal burners mainly include the following aspects: [0004] (1) The cold air and pulverized coal are injected into the boiler or kiln at the same time. Since the pulverized coal will not burn due to the low temperature in the initial stage, the precious combustion spa...

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Problems solved by technology

[0004] (1) The cold air and pulverized coal are injected into the boiler or kiln at the same time. Since the pulverized coal will not burn due to the low temperature in the initial stage, the precious combustion space is not fully utilized, so the combustion process of pulverized coal in the furnace is extremely short, and there is coal High energy consumption and high cost due to low pulverized coal burnout rate, and high quality requirements for pulverized coal

[0005] (2) During operation, due to a lot of ash accumulation in the furnace, heat exchange is hindered and the overall thermal efficiency of the boiler is reduced. For this reason, the furnace must be shut down regularly to clean the ash, which affects the continuous operation of the equipment

[0006] (3) In order to improve the burnout rate of pulverized coal, the temperature in the combustion zone is very high. Due to the relatively slow oxidation-reduction reaction process between pulverized coal and oxygen, oxygen and nitrogen generate a large amount of nitrogen oxides in a high-temperature environment, resulting in Exhaust emissions seriously exceed the standard, which does not meet the national environmental protection requirements for reducing smog and reducing nitrogen oxide emissions

[0007] To sum up, the prior art at least has defects such as low pulverized coal burnout rate, low thermal efficiency, environmental protection and poor stability.

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