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kinetics of coking
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  相似匹配句对
     Hydrolysis kinetics of C.
     采用反相离子对高效液相色谱法(HPLC)研究了C.
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     Absorbance and Kinetics of Photopolymerization
     吸光度与光聚合动力学
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     The reaction kinetics was studied.
     进行环柱形气相乙烯氧乙酰化合成乙酸乙烯酯催化剂的宏观反应动力学研究。
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     The mechanism and the kinetics are discussed.
     讨论了反应机理和动力学;
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     Characteristics of Ligonite Coking
     褐煤焦化特征
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With equipment specially designed and assembled for studying coke depositionin pyrolysis of hydrocarbons,kinetics of coke deposition during gas oil pyrolysis wasstudied at temperatures of 1033—1173K,KSF of 0.6—4 and under hydrocarbonpartial pressure of 0.2—0.7atm.The effect of run time on coking rates showedthat kinetics of coking reaction was a limiting step in coking.An activation ener-gy of coke formation of 142 kJ/mol was consistent with an activation energy ofcommercial pyrolysis furnaces of...

With equipment specially designed and assembled for studying coke depositionin pyrolysis of hydrocarbons,kinetics of coke deposition during gas oil pyrolysis wasstudied at temperatures of 1033—1173K,KSF of 0.6—4 and under hydrocarbonpartial pressure of 0.2—0.7atm.The effect of run time on coking rates showedthat kinetics of coking reaction was a limiting step in coking.An activation ener-gy of coke formation of 142 kJ/mol was consistent with an activation energy ofcommercial pyrolysis furnaces of 151 kJ/mol.This showed that kinetics of cokingreaction was also a limiting step in coking in commercial pyrolysis furnaces.Existence of a minimum coking rate with KSF,and composition of pyrolysisproduct showed that gas oil with multi-alkyl substituted aromatics in gas oil werehighly active coking precursors.

将热重天平改装成可连续测量石油烃水蒸汽热裂解结焦速度的流动积分反应装置。研究了柴油结焦速度与温度、烃分压和动力学裂解深度的关系及小试与工业炉的结焦过程,建立了结焦动力学方程。结果表明,同小试一样,工业炉的结焦反应也为反应动力学控制。结焦速度和结焦母体随裂解深度的变化表明,原料中带支链的芳烃和二次反应中生成的“聚合物”是活性很高的结焦母体。

With equipment specially designed and assembled for studying coke deposition in pyrolysis of hydrocarbons, kinetics of coke deposition during pyrolysis of naphtha and light gas oil was studied at temperatures of 1033—1223K, KSF of 0.6—8 and under hydrocarbon partial pressure of 0.2—0.7atm. The effect of run time on coking rates showed that kinetics of coking reaction was a limiting step in coking. In naphtha pyrolysis an activation energy of coke formation of 88—100kJ/mol was consistent with an activation...

With equipment specially designed and assembled for studying coke deposition in pyrolysis of hydrocarbons, kinetics of coke deposition during pyrolysis of naphtha and light gas oil was studied at temperatures of 1033—1223K, KSF of 0.6—8 and under hydrocarbon partial pressure of 0.2—0.7atm. The effect of run time on coking rates showed that kinetics of coking reaction was a limiting step in coking. In naphtha pyrolysis an activation energy of coke formation of 88—100kJ/mol was consistent with an activation energy of commercial pyrolysis furnaces of 104kJ/mol. And during gas oil pyrolysis an activation energy of coke formation of 142kJ/mol was consistent with an activation energy of commercial pyrolysis furnaces of 151kJ/mol. This showed that kinetics of coking reaction was also a limiting step in coking in commercial pyrolysis furnaces. An activation energy of coke formation in highly dependent on the BMCI of feedstock, the higher the value of BMCI, the lower will be the value of activation energy. The existence of a minimum coking rate with KSF, and composition of pyrolysis product showed that oil atmospheric distillate with multi-alkyl substituted aromatics in gas oil were highly active coking precursors.

在可连续测量石油烃水蒸汽热裂解结焦速度的流动积分反应装置上,研究了石脑油和轻柴油结焦速度与温度、烃分压和动力学裂解深度的关系,小试与工业炉的结焦过程,给出了结焦模型。结果表明,同小试一样,工业炉的结焦反应也为反应控制。结焦反应的活化能随原料的芳烃指数增大而变小。结焦速度与结焦母体随裂解深度的变化表明,在低裂解深度下,原料和焦油中的芳烃是主要结焦母体,在高裂解深度下,二次反应生成的“缩聚物”是主要结焦母体。

The rate of formation of coking precursor and the rate of coking on the convection tube wall of acracking furnace were studied. The results show that the greater the value of the product of linear velocity andReynod's number, and the beer the reaction severity, the beer will be the coking rate, which infers that the kinetics of coking reaction is a limiting step in coke deposition.

裂解炉对流段结焦和结焦母体生成速率的研究表明,雷诺数和线速度的乘积愈大和反应深度愈低,结焦速度愈小。重油汽化呈环流时管壁不结焦,仅当准雾状流时才结焦。雷诺数和线速度的乘积越大,临界汽化率越大。

 
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