Propylene and ethylene are the major raw chemical materials for organic chemical industry, which are mainly derived from hydrocarbon steam cracking process.
丙烯、乙烯是重要的基本有机化工原料，且二者的市场需求日益旺盛，其主要来源是蒸汽裂解装置。
Naphtha is the main feedstock for steam cracking process, therefore its property directly influences the yields of main cracking products and the operation cycle of cracking furnace.
石脑油作为蒸汽裂解工艺的主要原料，其性质直接影响裂解主要产品收率和裂解炉操作周期。
The technology of separating normal paraffins from the naphtha through the adsorption process was studied to optimize the steam cracking feedstock and utilize the naphtha resource properly.
为了优化乙烯裂解原料并合理利用石脑油资源，将石脑油中的正构烷烃进行分离。
A new process for producing roofing asphalt from petroleum residua by steam cracking and condensation has been studied in the laboratory.
在实验室中研究了一种从石油残渣油制取建筑沥青的新工艺——水蒸汽裂解缩合。
A new process for producing roofing asphalt from petroleum residua by steam cracking and condensation has been studied in the laboratory.
在实验室中研究了一种从石油残渣油制取建筑沥青的新工艺——水蒸汽裂解缩合。
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