Anthracite large oxygen-enriched combustion system and method with novel direct blowing powder production device

A pulverizing device and oxygen-enriched combustion technology, which is applied in the direction of combustion method, combustion equipment, fuel supply, etc., can solve the problems of large consumption, high cost, and complicated debugging, so as to achieve CO2 emission reduction, improve ignition characteristics, The effect of increasing the burnout rate

Inactive Publication Date: 2017-02-22
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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Problems solved by technology

At present, the maximum capacity of anthracite-fired W-flame boilers at home and abroad is 660MW. However, W-flame boilers generally have the above-mentioned combustion problems, and the structure of W-flame boilers is relatively complicated. The overall volume is large, the steel consumption is large, the man

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  • Anthracite large oxygen-enriched combustion system and method with novel direct blowing powder production device

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[0036] The embodiment of the present invention provides a large-scale oxy-fuel combustion system and method for anthracite with a novel direct-blowing pulverizing device, which realizes a tangential combustion mode or a wall combustion mode for burning anthracite with a large capacity (600MW and above). When the direct-blowing pulverizing system is used, the temperature of the primary air powder is low. The system optimizes the air flow of the primary air powder and improves its ignition characteristics. This combustion method realizes CO 2 Emission reduction has fundamentally reduced the emission of nitrogen oxides and at the same time increased the burn-out rate of pulverized coal.

[0037] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of ...

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Abstract

The invention provides an anthracite large oxygen-enriched combustion system and a method with a novel direct blowing powder production device for realizing an anthracite high-volume (600 MW and above) tangential firing mode or a wall firing mode. When the direct blowing powder production system is adopted, the wind powder temperature of primary wind is low; and the system optimizes the wind powder airflow of the primary wind, and improves the ignition characteristic. The firing mode realizes CO2 emission reduction, radically reduces emission of nitric oxides, and meanwhile, increases the burn-off rate of coal powder.

Description

technical field [0001] The invention relates to a large-scale oxygen-enriched combustion system and method for anthracite with a novel direct blowing pulverizing device, belonging to the field of power generation equipment. Background technique [0002] my country's proven coal reserves are about 640 billion tons, of which low-volatile anthracite accounts for about 14.6% of the coal reserves. Anthracite is the coal with the longest burial age, the deepest degree of carbonization, and the lowest volatile content. Typical anthracite coal has high carbon content, high calorific value, high ash melting point and low volatile matter, low ash content and low sulfur content, which are the so-called "three highs and three lows". Its surface has a bright black luster, and its dry ash-free base has a volatile content of less than 10%, while its fixed carbon content and calorific value are relatively high. Anthracite is currently mainly used as fuel for power stations and industrial ...

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Application Information

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IPC IPC(8): F23K1/00F23K3/02F23C9/06F23L7/00
CPCF23C9/06F23K1/00F23K3/02F23L7/007Y02E20/34
Inventor 李德波冯永新车得福查琼亮李建波王长安周杰联余岳溪殷立宝湛志钢
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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