中国安全生产科学技术
中國安全生產科學技術
중국안전생산과학기술
JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY
2014年
4期
85-89
,共5页
安全科学技术基础学科%道化学评价方法%最大反应失效时间%绝热温升
安全科學技術基礎學科%道化學評價方法%最大反應失效時間%絕熱溫升
안전과학기술기출학과%도화학평개방법%최대반응실효시간%절열온승
basic subject of safety science and technology%Dow chemical evaluation method%maximum response time to failure%adiabatic temperature rise
随着本质安全研究的深入,道化学评价方法中物质系数MF的计算已不能准确描述反应物本身的热风险大小。在道化学评价方法中引入热风险概念,比较热危险性评价方法和道化学评价方法间相异点;以六甲基磷酰三胺工艺为研究对象,用DSC量热仪对反应物进行分析得出放热速率q、反应波峰峰值、单位质量的反应焓Hr ,对采集的工艺参数用热力学理论外推法、基因贡献法得出活化能E、比热容CP 并以此求出最大反应失效时间TMRad、绝热温升Qad、物质系数MF值以及工艺单元中物料量。得出最大反应失效时间与物质系数MF间具有相关性,道化学评价方法对因失效反应引发二次反应的热风险评估也适用。
隨著本質安全研究的深入,道化學評價方法中物質繫數MF的計算已不能準確描述反應物本身的熱風險大小。在道化學評價方法中引入熱風險概唸,比較熱危險性評價方法和道化學評價方法間相異點;以六甲基燐酰三胺工藝為研究對象,用DSC量熱儀對反應物進行分析得齣放熱速率q、反應波峰峰值、單位質量的反應焓Hr ,對採集的工藝參數用熱力學理論外推法、基因貢獻法得齣活化能E、比熱容CP 併以此求齣最大反應失效時間TMRad、絕熱溫升Qad、物質繫數MF值以及工藝單元中物料量。得齣最大反應失效時間與物質繫數MF間具有相關性,道化學評價方法對因失效反應引髮二次反應的熱風險評估也適用。
수착본질안전연구적심입,도화학평개방법중물질계수MF적계산이불능준학묘술반응물본신적열풍험대소。재도화학평개방법중인입열풍험개념,비교열위험성평개방법화도화학평개방법간상이점;이륙갑기린선삼알공예위연구대상,용DSC량열의대반응물진행분석득출방열속솔q、반응파봉봉치、단위질량적반응함Hr ,대채집적공예삼수용열역학이론외추법、기인공헌법득출활화능E、비열용CP 병이차구출최대반응실효시간TMRad、절열온승Qad、물질계수MF치이급공예단원중물료량。득출최대반응실효시간여물질계수MF간구유상관성,도화학평개방법대인실효반응인발이차반응적열풍험평고야괄용。
With the developmentof safety research , material factor ( MF value ) of Dow chemical evaluation method can not accurately describe the size of thermal risk .The difference between thermal hazard evaluation method and Dow chemical evaluation method was analyzed by introducing thermal rick concept in Dow chemical evalution .DSC calorimeter was used to applysis the reactant so as to obtain heat release rate q , reaction wave peak and reaction en-thalpy Hr .The thermodynamic theory extrapolation and group contribution method were applied to analyze the mea-surred process parameters , activation energy E and specific heat capacity CP were obtained , then the maximum re-sponse time to failure TMR ad , adiabatic temperature rise Qad, material factor MF and the amount of material in the process unit were found out .It showed that the maximum response time to failure is related with MF , and Dow chemical evaluation method is useful for thermal risk assessment with secondary reaction caused by failure reaction .