动力工程学报
動力工程學報
동력공정학보
JOURNAL OF POWER ENGINEERING
2011年
10期
789-796
,共8页
煤气化%响应面法%工艺参数%氧煤质量比%蒸汽煤质量比%效应分析
煤氣化%響應麵法%工藝參數%氧煤質量比%蒸汽煤質量比%效應分析
매기화%향응면법%공예삼수%양매질량비%증기매질량비%효응분석
coal gasification%response surface methodology（RSM）%process parameter%oxygen-coal mass ratio%steam-coal mass ratio%effectiveness analysis
以粉煤加压气化工艺为对象,基于ChemCAD仿真软件建立了煤气化过程仿真模型,采用中心复合设计进行了煤气化仿真试验,构建煤气化性能指标与工艺参数间的响应曲面,并在此基础上对煤气化各工艺参数对气化性能的主效应和交互效应进行了分析.结果表明：氧煤质量比是影响煤气化性能最重要的工艺参数,氧煤质量比的增加能提高煤气中CO体积分数、产气率和碳转化率,但会降低H2体积分数;蒸汽煤质量比主要影响煤气的有效气体成分,H2体积分数随其值提高而显著增加,CO体积分数下降;蒸汽煤质量比对产气率和碳转化率影响较小;压力对煤气中有效气体成分、产气率和碳转化率影响均不显著;氧煤质量比、蒸汽煤质量比和压力的综合效应对煤气中有效气体成分影响不显著,但对产气率和碳转化率等生产效率指标影响显著.
以粉煤加壓氣化工藝為對象,基于ChemCAD倣真軟件建立瞭煤氣化過程倣真模型,採用中心複閤設計進行瞭煤氣化倣真試驗,構建煤氣化性能指標與工藝參數間的響應麯麵,併在此基礎上對煤氣化各工藝參數對氣化性能的主效應和交互效應進行瞭分析.結果錶明：氧煤質量比是影響煤氣化性能最重要的工藝參數,氧煤質量比的增加能提高煤氣中CO體積分數、產氣率和碳轉化率,但會降低H2體積分數;蒸汽煤質量比主要影響煤氣的有效氣體成分,H2體積分數隨其值提高而顯著增加,CO體積分數下降;蒸汽煤質量比對產氣率和碳轉化率影響較小;壓力對煤氣中有效氣體成分、產氣率和碳轉化率影響均不顯著;氧煤質量比、蒸汽煤質量比和壓力的綜閤效應對煤氣中有效氣體成分影響不顯著,但對產氣率和碳轉化率等生產效率指標影響顯著.
이분매가압기화공예위대상,기우ChemCAD방진연건건립료매기화과정방진모형,채용중심복합설계진행료매기화방진시험,구건매기화성능지표여공예삼수간적향응곡면,병재차기출상대매기화각공예삼수대기화성능적주효응화교호효응진행료분석.결과표명：양매질량비시영향매기화성능최중요적공예삼수,양매질량비적증가능제고매기중CO체적분수、산기솔화탄전화솔,단회강저H2체적분수;증기매질량비주요영향매기적유효기체성분,H2체적분수수기치제고이현저증가,CO체적분수하강;증기매질량비대산기솔화탄전화솔영향교소;압력대매기중유효기체성분、산기솔화탄전화솔영향균불현저;양매질량비、증기매질량비화압력적종합효응대매기중유효기체성분영향불현저,단대산기솔화탄전화솔등생산효솔지표영향현저.
Based on simulation models built up with ChemCAD software,simulation experiments were conducted to study the coal gasification processes in a pressurized entrained flow coal gasifier using Central Composite Design（CCD）,during which the response surface was founded between process parameters and coal gasification performance indexes,and hence the main and interacting effects of process parameters on the coal gasification were analyzed.Results show that the oxygen-coal ratio is the most important process parameter that influences the coal gasification performance.Raising the oxygen-coal mass ratio may help to improve the φ（CO） in syngas,the syngas yield rate and the carbon conversion mass rate,but reduce the φ（H2）.Steam-coal mass ratio mainly affects the effective gas components in the syngas,φ（H2） increases significantly with rising steam-coal mass ratio,while φ（CO） reduces;steam-coal ratio slightly affects the syngas yield rate and the carbon conversion rate.Pressure influences little on the effective gas component,the syngas yield rate and the carbon conversion rate.The effective gas components are not obviously affected by the comprehensive interaction among the oxygen-coal mass ratio,steam-coal mass ratio and pressure,but some gasification indexes are affected significantly by the interaction such as the syngas production rate and carbon conversion rate.
