矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2014年
1期
8-11
,共4页
低浓度瓦斯发电%瓦斯爆炸%细水雾%正态分布%除雾器%分离效率%数值计算
低濃度瓦斯髮電%瓦斯爆炸%細水霧%正態分佈%除霧器%分離效率%數值計算
저농도와사발전%와사폭작%세수무%정태분포%제무기%분리효솔%수치계산
low-concentration gas%gas explosion%water mist%normal distribution%demister%separation efficiency%numerical calculation
为了进一步提高瓦斯气体中细水雾的分离效率,优化设计出正态分布式弧形板除雾器。采用Fluent6．3软件对正态分布式弧形板除雾器内的气雾两相流动进行数值模拟。通过调节参数,计算得到了多种结构参数和工况参数下除雾器的分离效率,并分析了各参数对除雾器分离效率的影响规律。研究结果表明,在相同结构参数下工况参数的变化对除雾器效率的影响较为明显,同时进一步得出适合不同雾滴直径的叶片结构组合型式：在叶片长度H=150 mm,转折角α=60°,板间距L=20 mm时,可以除去10~20μm的雾滴；在叶片长度H=150 mm,转折角α=90°,板间距L=30 mm时,可以除去20μm以上的雾滴。以上模型有助于优化除雾器的结构设计。
為瞭進一步提高瓦斯氣體中細水霧的分離效率,優化設計齣正態分佈式弧形闆除霧器。採用Fluent6．3軟件對正態分佈式弧形闆除霧器內的氣霧兩相流動進行數值模擬。通過調節參數,計算得到瞭多種結構參數和工況參數下除霧器的分離效率,併分析瞭各參數對除霧器分離效率的影響規律。研究結果錶明,在相同結構參數下工況參數的變化對除霧器效率的影響較為明顯,同時進一步得齣適閤不同霧滴直徑的葉片結構組閤型式：在葉片長度H=150 mm,轉摺角α=60°,闆間距L=20 mm時,可以除去10~20μm的霧滴；在葉片長度H=150 mm,轉摺角α=90°,闆間距L=30 mm時,可以除去20μm以上的霧滴。以上模型有助于優化除霧器的結構設計。
위료진일보제고와사기체중세수무적분리효솔,우화설계출정태분포식호형판제무기。채용Fluent6．3연건대정태분포식호형판제무기내적기무량상류동진행수치모의。통과조절삼수,계산득도료다충결구삼수화공황삼수하제무기적분리효솔,병분석료각삼수대제무기분리효솔적영향규률。연구결과표명,재상동결구삼수하공황삼수적변화대제무기효솔적영향교위명현,동시진일보득출괄합불동무적직경적협편결구조합형식：재협편장도H=150 mm,전절각α=60°,판간거L=20 mm시,가이제거10~20μm적무적；재협편장도H=150 mm,전절각α=90°,판간거L=30 mm시,가이제거20μm이상적무적。이상모형유조우우화제무기적결구설계。
A normal distributed arc-plate demister was developed by optimization design in order to further improve the separation efficiency of water mist in the gas. Fluent 6. 3 Software was employed for the numerical simulation of the two-phase flow of gas and mist in the normal distributed arc-plate demister. By adjusting the parameters, the separation efficiency of the demister in various structural parameters and operating parameters was calculated and the impact of various parameters on the separation efficiency of the demister was analyzed. The research results showed that change of the operating parameters had evident influence on the efficiency of the demister under the condition of the same structural parameters, and in addition, different structural combination modes of vanes suitable for different droplet diameters were further obtained:the mist droplets in 10-20μm can be removed when the length of vane is 150 mm, the turning angle is 60° and the plate spacing is 20 mm;the mist droplets in more than 20 μm can be removed when the length of the vane is 150 mm, the turning angle is 90° and the plate spacing is 30 mm. The above modes are helpful to optimize the structure design of the demister.
