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加氢裂化技术这一以加氢及裂化双功能相匹配的多相催化为基础,进行重质馏分油轻质化的基本过程得到了不断发展,但它受到了以下因素影响而演变为多种工艺过程:①不同时期或不同地区市场需求的变化导致不同品种和质量的产品有所差别和变化;②所加工的原料有相当大的差别;③多相催化学科不断进步,具有各种性能的催化剂开发成功,从而影响了工艺过程的变化和发展。经过多年的发展和完善,目前在工业上大量应用的工艺过程主要有:①单段工艺过程;②单段串联工艺过程;③两段工艺过程。
Hydrocracking technology, which is based on heterogeneous catalysis, which matches the dual functions of hydrogenation and cracking, has evolved to carry out the basic process of light weighting of heavy distillates. However, it has evolved into many kinds due to the following factors Process: ① different periods or different regions of the market demand led to different varieties and quality of products vary and change; ② the processing of raw materials have considerable differences; ③ heterogeneous catalytic discipline of continuous improvement, with various performance The success of catalyst development, which affects the process of change and development. After years of development and improvement, a large number of industrial processes are currently applied: ① single-stage process; ② single-stage process in series; ③ two-stage process.