PROCESS FOR PRODUCING CATALYTIC CRACKING GASOLINE WITH HIGH OCTANE

• Main Authors: GONG JIANHONG, ZHANG JIUSHUN, MAO ANGUO, LONG JUN, LI ZEKUN, TANG JINLIAN, ZHANG YUYING
• Format: Patent
• Language: English; Japanese
• Published: 04.07.2019
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

To provide a fluid catalytic cracking method and system capable of obtaining high octane gasoline in high yield.SOLUTION: A catalytic cracking method and system of the present invention comprise the following steps: i) a step for subjecting a heavy feedstock oil to a catalytic cracking reaction in the presence of a first catalytic cracking catalyst and obtaining a first reaction product; ii) a step for subjecting a hydrogenation cycle oil to a catalytic cracking reaction in the presence of a second catalytic cracking catalyst and obtaining a second reaction product; iii) a step for separating a mixture of the first reaction product and the second reaction product and obtaining a catalytic cracking gasoline and a catalytic cracking light cycle oil; iv) a step for subjecting the catalytic cracking light cycle oil or a fraction thereof to hydrogenation and obtaining a hydrogenation product; v) a step for re-circulating the hydrogenation product into the step ii) as the hydrogenated cycle oil.SELECTED DRAWING: Figure 1 【課題】ハイオクタンガソリンを高い収率で得ることができる流動接触分解方法及びシステムの提供。【解決手段】以下の工程を含む接触分解方法及びシステム。ｉ）第１の接触分解触媒の存在下で重質原料油を接触分解反応に供し、第１の反応生成物を得る工程、ｉｉ）第２の接触分解触媒の存在下で水素付加サイクル油を接触分解反応に供し、第２の反応生成物を得る工程、ｉｉｉ）前記第１の反応生成物と前記第２の反応生成物との混合物を分離し、接触分解ガソリンと接触分解軽質サイクル油とを得る工程、ｉｖ）前記接触分解軽質サイクル油またはその留分を水素付加に供し、水素付加生成物を得る工程、ｖ）前記水素付加生成物を前記水素付加サイクル油として前記工程ｉｉ）に再循環する工程。【選択図】図１