A hot downer reactor of 4.5 m in height and 13 mm in inner diameter was built to examine its performance in the deep catalytic cracking (DCC) process. The experimental results show that the downer reactor can significantly improve the selectivity of desired products in comparison with the commercial riser adopting the same feed and catalyst: the yields of propylene and gasoline increase by 3.71 and 7.30 wt %, respectively, while the yields of dry gas and coke reduce by 6.77 and 1.98 wt %, respectively. The "close to plug flow" pattern of the gas and solids in the downer makes it a desirable reactor for the DCC process.
The linearized Bregman iteration was successful used to find the sparse signal from the its noise measurements. It was proved that the iteration algorithm converges to the augmented minimization problem [4]. This paper mainly considers the measurement matrix which is generated by the Weibull random distribution. With the optimal number of the measurements, the stability of the augmented minimization model is given.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.