催化裂化轻循环油加氢－催化裂化组合生产高辛烷值汽油或轻质芳烃（LTAG）技术

对催化裂化轻循环油(LCO)加氢-催化裂化组合生产高辛烷值汽油和轻质芳烃的LTAG技术先后完成了2种操作模式的工业试验。工业试验结果表明：LCO加氢后单独催化裂化模式（LTAG模式Ⅰ）在全循环条件下可以实现LCO全部转化，获得55.87%的汽油产率，16.89%的C6~C8芳烃产率，汽油RON达到96.4；而重油和加氢LCO分层进料模式（LTAG模式Ⅱ）的加氢LCO的一次通过转化率为70.19%，汽油选择性80.00%，汽油RON增加，重油转化能力有所增加，通过循环操作可以基本实现LCO全部转化。

LTAG TECHNOLOGY FOR PRODUCING HIGH OCTANE NUMBER GASOLINE AND LIGHT AROMATICS

The studies and commercial trials of two modes of combined process of LCO hydrotreatment and FCC (LTAG technology: LCO to aromatics and gasoline) for production of higher RON gasoline and light aromatics were introduced. The commercial trials were conducted at SINOPEC Shijiazhuang Refining and Chemical Co. The commercial results show that with LTAG modeⅠ(the LCO is first hydrotreated and then the treated LCO is used as FCC feed), LCO can be all converted under the condition of full circulation, the yields of gasoline, C6-C8 aromatics are 55.87% and 16.89%, respectively, the gasoline RON reaches 96.4; while with LTAG modeⅡ(the hydrotreated LCO and heavy oil feed is pumped into FCC at different inlets separately), the once through conversion of LCO is above 70.19%, and the gasoline selectivity is up to 80.00% with increase of RON and the bottom oil cracking ability is improved, the LCO can be converted totally through recycling operation.