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Hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle

A technology of coal water slurry and entrained bed, which is applied in the field of coal gas and coal, can solve the problems that "double high" coal types cannot meet the requirements of slagging process and cannot be applied, and achieve the improvement of gasification reaction rate and carbon conversion rate, high carbon Conversion rate and cold gas efficiency, the effect of expanding the scope of application

Inactive Publication Date: 2012-06-13
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

A large number of "double high" coal types cannot meet the slagging process requirements of the existing liquid slagging type pressurized entrained entrained gasification technology
Aiming at the problem that the existing liquid slagging pressurized entrained bed gasification technology cannot be applied to a large number of "double high" coal types in my country, develop a new type of graded oxygen supply and controllable flame water coal that is suitable for dry slagging of "double high" coal types in China The slurry entrained entrained nozzle can make up for the deficiency that the existing liquid slag discharge type pressurized entrained bed gasification device is not suitable for "double high" coal types, and expand the application range of pressurized entrained entrained bed gasification technology to coal types, which is of great help to the popularization The large-scale application of large-scale pressurized entrained entrained gasification technology in my country has very important practical significance and broad development prospects for the realization of clean and efficient utilization of coal

Method used

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  • Hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle
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  • Hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle

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Embodiment Construction

[0022] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment provides detailed implementation methods and specific operating procedures on the premise of the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments. .

[0023] Such as figure 1 As shown, the staged oxygen supply and controllable flame coal-water slurry entrained bed combination nozzle of the present invention is installed on the gasifier, which includes a single main fuel nozzle 1, two water vapor nozzles 2 and two second-stage oxygen supply nozzles Nozzle 3 achieves the purpose of controlled flame dry slag removal through the comprehensive action of five nozzles.

[0024] The main fuel nozzle 1 is located on the top of the gasifier, and its opening leads into the hearth of the gasifier. The axis of the main fuel nozzle 1 coincides with the vertic...

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Abstract

The invention relates to a hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle which is arranged on a gasification furnace. The hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle comprises a main fuel nozzle which is arranged at the top of a furnace, two steam nozzles which are arranged at the two sides of a furnace arch and two oxygen supply nozzles which are horizontally arranged in a hedging manner, wherein the nozzles are respectively connected with a coal water slurry source, an oxygen source and a steam source, and the openings of the nozzles lead into a hearth of the gasification furnace. According to the invention, an advanced temperature control technology combining a grading oxygen supply temperature control technology and a steam temperature control technology is adopted, combustion intensity and flame temperature in the furnace are effectively reduced, and the aim that ash at the outlet of the gasification chamber is non-fused solid slag; meanwhile, gasification reaction rate and carbon conversion rate are improved, thus gasification solid deslagging on a 'double high' coal type large-scale pressurization entrained bed in China is realized, and the hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle provided by the invention is especially applicable to industrial application of a high-ash (25-27%) and high-ash-fusing-point (FT is more than 1400 DEG C) coal type large-scale gasification device in China.

Description

technical field [0001] The invention relates to a nozzle device, in particular to a combined nozzle with graded oxygen supply and controllable flame coal-water slurry airflow bed capable of realizing dry slag discharge of high ash and high ash melting point coal, and belongs to the technical field of gas and coal. Background technique [0002] Large-scale pressurized entrained-bed coal gasification technology is the core of future clean coal technology, and it is the development of coal-based chemical products (synthetic ammonia, methanol, dimethyl ether, etc.), coal-based polygeneration, IGCC power generation, large-scale hydrogen production, fuel The basis of industries such as batteries is the core technology and leading technology of a coal-based high-efficiency energy system that realizes near-zero emissions of pollutants, and represents the development direction of today's coal gasification technology. At present, large-scale pressurized entrained-bed coal gasification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/48C10J3/50B05B7/06
CPCY02E20/18
Inventor 张忠孝张健胡世磊
Owner SHANGHAI JIAO TONG UNIV
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