Methanol atomizing combustion nozzle
A spray combustion and methanol technology, applied in burners, lighting and heating equipment, etc., can solve the problems of low calorific value of methanol, high emissions, large latent heat of methanol gasification, etc., and achieve the effect of low-polluting combustion
Active Publication Date: 2009-10-28
中科思道(南京)储能技术有限公司
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Problems solved by technology
First, the viscosity of methanol is much lower than that of diesel, so methanol is easier to atomize, but the atomization angle may become larger
Second, the calorific value of methanol is low, and the chemical equivalent of air is less
Third, the latent heat of vaporization of methanol is large
Due to the above-mentioned characteristics of methanol, the previously developed spray combustion nozzles for diesel fuel will not be able to adapt to the spray combustion of methanol, so it is necessary to develop spray combustion nozzles that adapt to the characteristics of methanol
[0004] When the liquid spray burns, due to the high temperature of the flame surface, it causes NO x emissions will be high
Method used
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[0016] figure 1 It is a specific embodiment of the present invention. refer to figure 1 It can be seen that the methanol spray combustion nozzle of the present invention is a column, and the structure is a general annular channel. It mainly includes air cyclones 1 and 2 opposite to each other, an atomizing air cyclone 3 and a centrifugal atomizing nozzle 6 for methanol, and also includes two dilution air channels 4 and 5 and an atomizing air channel 7 . in:
[0017] On the central axis of the cylinder, there is a methanol channel 8, one end of the methanol channel 8 is connected to a methanol source or a water-mixed methanol source, and the other end is a methanol atomizing nozzle 9. The atomizing air passage 10 and the two dilution air passages 4 and 5 are all annular passages, with the methanol passage 8 as the axis line, arranged sequentially from inside to outside. One end of the atomizing air channel 10 is connected to the atomizing air source, and the other end is pr...
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The invention relates to a methanol spray combustion nozzle of a gas turbine, which relates to the gas turbine and the boiler techniques. Adapting to the methanol properties, the methanol spray combustion nozzle has the advantages of high efficiency and low pollution discharge. The methanol spray combustion nozzle comprises a centrifugal methanol channel, a swirl atomizing air channel and a primary air swirl channel. Based on the methanol characteristics, the parameter of the atomizing nozzle is adjusted to match the air quantity and the air swirl number. In addition, the combustion method of watering methanol and diluent air is adopted to achieve low discharge of NOx.
Description
technical field [0001] The invention relates to the technical field of gas turbines and boilers, and is a gas turbine that can achieve high efficiency and low NO through fuel dilution and (or) air dilution. x Emissions from methanol spray combustion nozzles. Background technique [0002] Today's world oil prices are soaring, and more than half of China's oil depends on imports, so fuel-fired equipment such as gas turbines and oil-fired boilers must seek other alternative liquid fuels. Coal dominates China's energy structure, so methanol, a coal-based liquid fuel, has become China's preferred liquid alternative fuel due to its wide range of sources, cheap price, and mature production process. [0003] Compared with fuels such as diesel commonly used in gas turbines and oil-fired boilers, methanol has its own characteristics. First, the viscosity of methanol is much lower than that of diesel, so methanol is easier to atomize, but the atomization angle may become larger. Sec...
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IPC IPC(8): F23D11/38
Inventor 王岳张哲巔穆克进肖云汉
Owner 中科思道(南京)储能技术有限公司