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裂化热
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THE REACTION HEAT OF MGG PROCESS MGG工艺的裂化反应热 短句来源 DEVELOPMENT OF A THERMAL CRACKING PROCESS FOR VACUUM RESIDUUM 渣油热裂化工艺的开发 短句来源 HOT 热报! 短句来源 Hotest Word 热词 短句来源 
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Coke deposition on the inner wall of the tubular reactor in the visbreaking of Daqing residue un- der different reaction conditions has been determined by weighing the reactor tube before and after re- action. It is found that coke deposition becomes quite serious when the temperature of the inner wall is over 480℃. A practical model for predicting coke deposition on the inner wall is developed. 介绍了大庆减压渣油在流动管式反应器中进行减粘裂化热反应后,管内壁焦炭沉积与管壁温度的关系,并提出了一个实用模型。 文摘来源 The cracking of the elbow on the high-temperature separation pipeline of the domestic hydrocracker was analyzed. The corresponding protection measures against polythionic acid corrosion were presented: ie selection of austenic steel or duplex steel with carbon less than 0.03% and stablizing elements like Ti and Nb and the hardness of the welds controlled at no greater than HB200 and implementation of heat treatment. 12CrMo and 15CrMo had good performance against stress corrosion. The equipment should be cle... 对国产加氢裂化热高分油管线的弯头开裂原因进行了分析 ,对预防连多硫酸腐蚀提出了相应的防范措施 :选用碳含量 <0 .0 3 %并含有稳定化元素Ti、Nb的奥氏体不锈钢或双相钢 ;控制焊缝硬度不大于HB2 0 0并焊后热处理 ;12CrMo和 15CrMo耐应力腐蚀性能好 ;设备停运后马上进行清洗并用碱液中和 文摘来源 The reason of cracking in elbow of the hot hi-pressure segregator oil P3327 pipeline in the hydrocracking unit was analyzed and a method to prevent from polythionic acid corrosion was provided. 对国产加氢裂化热高分油管线的弯头开裂原因进行了分析 ,并对预防连多硫酸腐蚀提出了相应的防范措施 文摘来源 
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