A pre-reaction device for a pulverized coal boiler

A pre-reaction, pulverized coal boiler technology, applied in the field of pulverized coal boiler combustion, can solve the problems of high operating cost, high content, poor adaptability of the boiler to coal quality, etc., to achieve low operating costs, reduce NOx content, increase coal pulverized Effect of Burnout and Boiler Efficiency

Inactive Publication Date: 2015-09-23
王雨勃
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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a pre-reaction device of a pulverized coal boiler to solve the problem of NO in the flue gas. x High content, high operating costs, and poor adaptability of boilers to coal quality

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  • A pre-reaction device for a pulverized coal boiler
  • A pre-reaction device for a pulverized coal boiler

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0023] The pre-reaction device of the pulverized coal boiler provided by the present invention includes a pre-reaction mechanism, a thick and thin pulverized coal separation mechanism, an ignition mechanism, a steam system, an air system, and an oxygen system. The inlet channel, reaction chamber and outlet of the pre-reaction mechanism The passages are connected in sequence, and the end of the outlet passage is connected with the furnace of the boiler; wherein, the thick and thin coal separation mechanism includes a thick and thin coal separator, a thick coal section and a light coal section, and the thick and thin coal separator passes through the thick coal section. It communicates with the inlet channel of the pre-react...

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Abstract

The invention discloses a preposed reaction device of a pulverized coal boiler. The preposed reaction device comprises a preposed reaction mechanism, a rich-lean pulverized coal separation mechanism, an ignition mechanism, a steam system, an air system and an oxygen system, wherein an inlet channel, a reaction chamber and an outlet channel of the preposed reaction mechanism are communicated sequentially; the tail end of the outlet channel is communicated with a hearth of the boiler; the rich-lean pulverized coal separation mechanism comprises a rich-lean separator, a rich pulverized coal section and a lean pulverized coal section; the rich-lean separator is communicated with the inlet channel of the reaction chamber through the rich pulverized coal section, and is communicated with the hearth of the boiler through the lean pulverized coal section; the ignition mechanism is arranged at the inlet channel part, and is used for igniting the thick pulverized coal entering the reaction chamber; and the steam system, the air system and the oxygen system are respectively arranged on the reaction chamber, and are respectively used for regulating the flow rate of steam, air and oxygen entering the reaction chamber. The preposed reaction device of the pulverized coal boiler provided by the invention can lower NOx content in flue gas, can lower the running cost, and can improve the adaptability of a boiler to coal quality.

Description

technical field [0001] The invention relates to the technical field of pulverized coal boiler combustion, in particular to a pre-reaction device of a pulverized coal boiler. Background technique [0002] my country's primary energy is dominated by coal, and the installed capacity of thermal power generation exceeds 700 million kilowatts, NO x Huge emissions, in 2007 my country's thermal power NO x The emission is 8.55 million tons, and it was 10.38 million tons in 2010. Due to the increase in emissions and hazards year by year, the Chinese government is strict with NO x Emissions to take active control measures, the formulation of more stringent standards. In 2011, the Ministry of Environmental Protection promulgated a new "Emission Standard of Air Pollutants for Thermal Power Plants" (GB13223-2011) to replace GB13223-2003, which will be implemented from January 1, 2012. The latest emission standard stipulates that since July 1, 2014, the nitrogen oxide emission limit for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C6/04
Inventor 王雨勃李毅张涛杨朔张伟李伟李承彦梅兆军王俊峰
Owner 王雨勃
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