The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2010
Filed:
Aug. 28, 2007
Conghua Liu, Beijing, CN;
Zhengguo Tan, Beijing, CN;
Wei Ding, Beijing, CN;
Shuqin Zheng, Beijing, CN;
Xinmei Pang, Beijing, CN;
Shuhong Sun, Beijing, CN;
Dong Wang, Beijing, CN;
Qiuxia Teng, Beijing, CN;
Tong LU, Beijing, CN;
Conghua Liu, Beijing, CN;
Zhengguo Tan, Beijing, CN;
Wei Ding, Beijing, CN;
Shuqin Zheng, Beijing, CN;
Xinmei Pang, Beijing, CN;
Shuhong Sun, Beijing, CN;
Dong Wang, Beijing, CN;
Qiuxia Teng, Beijing, CN;
Tong Lu, Beijing, CN;
Petrochina Company Limited, Beijing, CN;
Abstract
A method for preparing cracking catalyst. The method comprises making catalyst slurry having a homogeneous distribution of molecular sieve slurry, pseudoboehmite, clay, inorganic acid and aluminum-containing binder; and subsequent spray drying. Inorganic acid is added prior to the addition of pseudoboehmite; addition of molecular sieve is added after the addition of inorganic acid; and a phosphatic dispersant is added during preparation. Compared to conventional methods of preparing FCC catalyst slurry, the inventive catalyst slurry viscosity is decreased and the fluidity thereof is improved, while catalyst anti-friction is maintained. The solid content of the FCC catalyst slurry can be increased to about 40% or more. The gel forming time is significantly reduced with increased productivity and decreased catalyst production cost. Meanwhile, the catalyst has high pore volume and improved micro-reactivity. Overall reactivity performance of the catalyst is also improved.