Patents by Inventor Pan Rennan

Pan Rennan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for producing light olefins by catalytic conversion of hydrocarbons
    Patent number: 5670037
    Abstract: A process for producing light olefins, especially ethylene, propylene, isobutylene and isoamylene, together with high octane gasoline as by-product, comprises that petroleum hydrocarbons are contacted with phosphorus and rare earth containing high silica zeolite having a structure of pentasil catalysts and catalytically converted at a temperature of 480.degree. to 680.degree. C. and a pressure of 1.2.times.10.sup.5 to 4.0.times.10.sup.5 Pa, with a contact time of 0.1 to 6 seconds, a weight ratio of catalyst to feedstock of 4:1 to 20:1 and a weight ratio of steam to feedstock of 0.01:1 to 0.5:1.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: September 23, 1997
    Assignees: China Petro-Chemical Corporation, Research Institute of Petroleum Processing, SINOPEC
    Inventors: Li Zaiting, Xie Chaogang, Shi Wenyuan, Jiang Fukang, Liu Shunhua, Pan Rennan, Li Shichun