Other

China Petroleum & Chemical Corporation

Research Institute of Petroleum Processing, Sinopec

China Petrochemical Corporation

Yinan Yang

Jun Long

Jiushun Zhang

Zheng Li

Nan Jiang

Youhao Xu

Chaogang Xie

Xieqing Wang

Yan Cui

Yongcan Gao

Weimin Lu

Zaiting Li

Jianguo Ma

Raichi Zhang

Ruichi Zhang

A bow includes: a stick, a bow head at a front end of the stick, a frog at a tail end of the stick; and a bow hair tightly connected between the bow head and the frog. The bow further includes: a first hair binding terminal and a second hair binding terminal, respectively for mounting two ends of the bow hair; a locking screw, for fixing the first hair binding terminal at the bow head by rotating tight, and releasing the fixed first hair binding terminal by rotating loose; and a cover, slidably provided on the frog, wherein the cover slides back and forth to detachably fix the second hair binding terminal in the frog.

Bow for string instruments

The present invention discloses catalytic cracking apparatus and process, which are useful for catalytic cracking of heavy oils with a high heavy oil conversion, a high propylene yield and low dry gas and coke yields.

Catalytic cracking apparatus and process

A process for catalytic conversion of hydrocarbon feedstock to produce isobutane and isoparaffin-enriched gasoline which comprises two different reactions, the preheated feedstock is contacted with hot regenerated catalyst in the lower part of a reactor with the result that catalytic cracking reaction takes place, and the mixture of vapors and the coke deposited catalyst are up-flowed and enter into a suitable reaction environment with the result that isomerization and hydrogen transfer reaction take place. The produced LPG has an isobutane content of about 20 wt % to about 40 wt % and the produced gasoline contains isoparaffin content of about 30 wt % to about 45 wt % and olefin content of less than 30 wt %. RON and MON of the gasoline are 90&tilde;93 and 80&tilde;84 respectively.

Catalytic conversion process for producing isobutane and isoparaffin-enriched gasoline

Growing community of inventors

Beijing, China

Yinan Yang