神华科技
神華科技
신화과기
NORTHWEST COAL
2013年
2期
51-55
,共5页
王兴无%严林博%杨敏%何伯述
王興無%嚴林博%楊敏%何伯述
왕흥무%엄림박%양민%하백술
四角切圆燃煤锅炉%分隔屏%气固两相流%数值模拟%烟气走廊
四角切圓燃煤鍋爐%分隔屏%氣固兩相流%數值模擬%煙氣走廊
사각절원연매과로%분격병%기고량상류%수치모의%연기주랑
Quadrangle Tangent Circle Coal Fired Boiler%Division Screen%Gas-solid Two-phase Flow%Numerical Simulation%Smoke Passage
综合分析各工况的模拟结果,分隔屏截短后水平烟道入口处左右两侧烟气温度偏差并未增大,后水平烟道入口右下侧也并未出现烟气走廊,水平烟道入口截面平均氧气浓度降低,说明可燃物燃烧更充分.该改造方法,对国内存在有类似问题的锅炉具有重要的参考意义.
綜閤分析各工況的模擬結果,分隔屏截短後水平煙道入口處左右兩側煙氣溫度偏差併未增大,後水平煙道入口右下側也併未齣現煙氣走廊,水平煙道入口截麵平均氧氣濃度降低,說明可燃物燃燒更充分.該改造方法,對國內存在有類似問題的鍋爐具有重要的參攷意義.
종합분석각공황적모의결과,분격병절단후수평연도입구처좌우량측연기온도편차병미증대,후수평연도입구우하측야병미출현연기주랑,수평연도입구절면평균양기농도강저,설명가연물연소경충분.해개조방법,대국내존재유유사문제적과로구유중요적삼고의의.
This paper analyzes the numerical simulation on the original structure of division screen of #1 boiler and operating mode that shortened 1m, 2m and 3m separately by Fluent software utilizing computational fluid mechanics.To analyze the simulation results for each operating mode, it illustrates that inflammable goods are burnt more sufficient after shortening of division screen, the smoke temperature deviation for left-right horizontal flue entrance have not increased; right downside of horizontal flue entrance has no smoke passage; the average oxygen thickness has lowered in horizontal flue entrance section. This transforming method is provided with significant reference for those boilers which have the same problems at home.