Study on characteristics of uniformity optimization on pulverized coal flow in a Wflame boiler

Abstract

Abstract:

It explored the regulating characteristics of baffle plate to pulverized coal flow in primary air pipe. By adjusting the baffle plate, the deviation of pulverized coal flow decreased and uniformity of pulverized coal flow was optimized. The temperature of furnace center reduced nearly 40 degrees Celsius, the temperature deviation in the middle region of economizer outlet reduced 10.67 degrees Celsius, the oxygen deviation at economizer outlet reduced 1.16%, the emissions of NOx reduced 16.79μL/L. All burners was running smoothly and over temperature problem on reheater tube was solved. It showed that uniformity optimization of pulverized coal flow was good for reducing deviation of flame, furnace heat load and steam temperature and possibility of high temperature corrosion and cracking accidents. Reducing temperature at furnace center and stable combustion made reasonable air supply and stable combustion along the furnace width will make the cooperation of wind and powder more reasonable, which can reduce NOx generation and improves the combustion condition of the furnace (especially in the middle of the furnace)

Key words:

Wflame, boiler, baffle plate, powder distributor, primary air pipe, uniformity on pulverized coal flow, economizer, reheater

WU Yue.

Study on characteristics of uniformity optimization on pulverized coal flow in a Wflame boiler

[J]. Huadian Technology, 2018, 40(1): 5-9.

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Study on characteristics of uniformity optimization on pulverized coal flow in a Wflame boiler

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