One 20kt/a straight-run gasoline aromatization unit in GuangXi TianDong General Petrochemical Works adopting a patent technology that developed by Luo Yang Petrochemical Engineering Company has produced high octane gasoline and Liquefied Petroleum Gas (LPG).
Since 1980s,in order to meet the requirement of environmental protection,C 5/C 6 paraffin isomerization technology has been developing rapidly abroad and has now become an important technology for production of high octane gasoline China has not built a light paraffin isomerization plant However,great efforts have been made on research in C 5/C 6 isomerization catalyst,which did preparation for future commercial production
The effects of reaction temperature, space velocity, pressure and hydrothermal treatment of the catalyst on the aromatization of liquefied petroleum gas (LPG) to high octane gasoline over ZSM-5 zeolite catalyst at low temperature were investigated.
Operation tests to increase the iso-butane/butene ratio for alkylation feed showed that this ratio reached 1.05-1.10, indicating that the unit can produce the high octane number gasoline component and high quality alkylation feedstock simultaneously.
The effects of various direct gasoline injection strategies on homogeneous charge compression ignition(HCCI) combustion were studied using a two-zone high octane number gasoline HCCI combustion model based on the Chemkin source code.
The present process significantly improves the selectivity of dry gas and coke though it has a reduction of 1. 75 % in gasoline plus LCO yield, thus it is an ideal technology for high-octane gasoline production and increased heavy oil conversion.
A low platinum GCR-100 catalyst developed by Research Institute of Petroleum Processing was applied in the 400kt/a continuous reforming unit of Guangzhou Petrochemical Company for producing high octane num-ber gasoline component.
The study on the preparation of MTBE by selective reaction of methanol with isobutylene contained in C_4 cut or C_3-C_4 cut from catalytic cracking or steam cracking of hydrocarbon oils was aimed at the optimum etherification conditions.
When sulphur-containing feedstock is treated, se- lective cracking reactions take place with C_3/C_4 hydrocarbons (liquified petroleum gas) pro- duced, while the liquid phase product, contains large amount of isomers of C_5/C_6 hydrocar- bons and is an excellent high-octane component for gasoline pool.
After methanol is taken out, the research octane number of C_5 etherealization product is about 95. The alkene content is less than 35%, the sulfur content is less than 10μg/g and the aromatics content is less than 1%, it is a clean and high quality gasoline component with high octane number.