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Anti-bias DC burner

A burner, thick and thin technology, applied in the burner, combustion method, combustion type and other directions, can solve the problems of slow heating speed and high ignition temperature

Inactive Publication Date: 2010-10-20
UNIV OF SHANGHAI FOR SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the concentration of pulverized coal is very high, the increase in concentration will significantly slow down the heating rate, and the concentration effect of volatile matter is not enough to offset the decrease in heating rate, which makes the ignition temperature higher

Method used

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Embodiment Construction

[0019] The specific implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention should not be limited thereby.

[0020] see figure 1 and figure 2 . The anti-concentration straight-line burner of the present invention, the burner includes a bend pipe connected in sequence, a diversion rudder tube section, and a nozzle section, the diversion rudder tube section has a diversion rudder, and the diversion rudder and the diversion rudder tube section form a Overall, the diversion rudder is shaped like the tip of a pen, with a sharp front end and then gradually stretches. The connections between the diversion rudder section, the elbow and the spout section are all flange connections. Ceramic tiles are evenly inlaid in the bend pipe, and the diversion rudder pipe sections are all wrapped by ceramic tiles, and the diversion rudders are also all ...

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Abstract

The invention discloses an anti-bias DC burner which comprises a siphon, a diversion rudder pipeline section and a nozzle section sequentially connected. A diversion rudder is arranged in the diversion rudder pipeline section and integrated with the diversion rudder pipeline section which is connected with the siphon and nozzle section through flanges. The burner can effectively realize that even-concentration coal powder is sprayed in a furnace hearth, and can increase or reduce the maximum concentration at an outlet by replacing the diversion rudder pipeline section; and the value of an impact angle beta is an important parameter for adjusting the concentration of the coal powder at the outlet.

Description

technical field [0001] The invention relates to a direct-flow pulverized coal burner, in particular to a direct-current pulverized coal burner for anti-concentration separation. Background technique [0002] There are five main problems faced by my country's power plant boilers in terms of combustion, namely stable combustion, combustion efficiency, coking prevention, high temperature corrosion and environmental pollution reduction. These five problems must be considered at the same time to ensure the safe and economical operation of the unit. In the selection of burners, my country has done a lot of work, such as: using swirl pre-combustion chamber burners, blunt body burners, multi-functional boat burners, large speed difference burners, thick and thin burners and several types of mixed Combining burners, etc., especially after the Japanese PM and American WR two kinds of thick-thin separation burners were introduced into our country, various thick-thin separation burners a...

Claims

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Application Information

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IPC IPC(8): F23D1/00
Inventor 杨茉康张阳严祯荣罗晓明章立新杨大海陈赛科张昆
Owner UNIV OF SHANGHAI FOR SCI & TECH
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