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
CN102492477BInactive Publication Date: 2014-01-15SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Publication Date
2014-01-15
Estimated Expiration
Not applicable · inactive patent

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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.
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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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