Nozzle, combined nozzle and coal gasifier
A combined, nozzle technology, applied in the field of coal gasification, can solve the problems of low light oil content, slow mixing speed, and large specific gravity, and achieve the effects of increasing combustion speed, increasing productivity, and increasing mixing speed.
Active Publication Date: 2022-04-01
ENN SCI & TECH DEV
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Problems solved by technology
However, in the prior art, the mixing speed of hydrogen and pulverized coal is slow, which makes the combination of volatile free radicals, that is, the heavy reaction reaction, a larger proportion, which leads to a lower content of light oil products
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[0037] figure 1 It is a schematic diagram of the longitudinal section structure of the nozzle described in the embodiment of the present disclosure, figure 2 It is a schematic diagram of the cross-sectional structure of the nozzle described in the embodiment of the present disclosure, image 3 It is a structural schematic diagram of the inner core in the nozzle described in the embodiment of the present disclosure.
[0038] refer to figure 1 , figure 2 and image 3 As shown, the present embodiment provides a nozzle 100, including a nozzle shell 10 and an inner core 20. The nozzle shell 10 has a through hole 11, the inner core 20 is inserted in the through hole 11, and the radially outer surface of the inner core 20 is in contact with the inner core 20. The inner wall of the through hole 11 defines a first gas injection channel 31, and the inner core 20 is also provided with a second gas injection channel 32 extending along the depth direction of the through hole 11. The ...
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The invention relates to a nozzle, a combined nozzle and a coal gasifier. The nozzle comprises a nozzle shell and an inner core, a through hole is formed in the nozzle shell, the inner core is inserted into the through hole, a first gas injection channel is defined by the radial outer surface of the inner core and the inner wall of the through hole, and a second gas injection channel extending in the hole depth direction of the through hole is further formed in the inner core; the first gas injection channel comprises a spiral section, a distance is formed between the spiral section and the gas injection end of the first gas injection channel, and the spiral section is spirally arranged around the central axis of the inner core, so that gas injected from the first gas injection channel has a circumferential speed; the gas jetted from the first gas jet channel collides with the jetted pulverized coal in the process of dispersing along the radial direction under the action of centrifugal force, so that the mixing rate of the pulverized coal and the gas is improved, and the yield of light oil products is improved.
Description
technical field [0001] The disclosure relates to the technical field of coal gasification, in particular to a nozzle, a combined nozzle and a coal gasification furnace. Background technique [0002] Coal hydrogasification technology is one of the mainstream research and development directions of existing coal cascade utilization. The pulverized coal is rapidly mixed and heated in a high-temperature hydrogen environment to realize the hydrogenation gasification reaction. [0003] Because coal powder will have a large amount of volatile matter in the process of heating up, the phase change cracking will cause the bonds between the molecular groups that make up the coal powder volatile matter to break, and a large number of free radicals with group structure as the main structure will be generated. The free radicals produced by volatile matter can be freely combined to form heavy oil products, and can also be combined with hydrogen free radicals to form light oil products. Ho...
Claims
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IPC IPC(8): C10J3/50
Inventor 方科学周三汪国庆马志超刘明孙中卫张正旺
Owner ENN SCI & TECH DEV