Catalytic Cracking of Lower-Valued Hydrocarbons for Producing Light Olefins

Abstract

A number of important chemicals are made from light olefins such as propylene and ethylene, and it is expected that market demand for these light olefins will continue to grow at 4-5% annually, and the average overall growth of propylene will be about 1% higher than that of ethylene. From the viewpoint of supply of feedstock and demand of light olefins, it is anticipated that the thermal cracking process of naphtha will be gradually transformed to a catalytic process such as ACO TM that can efficiently produce both ethylene and propylene in high yield. Also, together with primary light olefin production technologies utilizing heavy feedstocks such as DCC TM , and HPFCC, supplementary propylene production technologies utilizing C 4 -C 4 such as SUPERFLEX TM , MOI TM , and PROPY-LUR TM will be applied gradually in commercial production.

Improvement of the Catalytic Efficiency of Butene Oligomerization Using Alkali Metal Hydroxide-Modified Hierarchical ZSM-5 Catalysts

“…Light olefins are generally produced by catalytic cracking or dehydrogenation of light alkanes in the petro-chemical industry [1,2]. It is widely known that oligomerization of light olefins is an effective method to produce plentiful liquid fuels (such as gasoline and diesel) and specialty chemical intermediates (such as surfactants, plasticizers and elastomers) [3,4].…”

Nature and Location of Carbonaceous Species in a Composite HZSM-5 Zeolite Catalyst during the Conversion of Dimethyl Ether into Light Olefins

“…In this scenario, the production of light olefins (in particular of propylene) receives great attention [1,2] due to the increasing demand for its derivatives: polypropylene, propylene oxide and acrylonitrile. Although the current production of light olefins is based on naphtha steam cracking, the high energy requirement of this process (with high CO 2 emissions) and its reduced selectivity of propylene explain the interest of other processes [3].…”

Conversion of Y into SSZ-13 zeolites and ethylene-to-propylene reactions over the obtained SSZ-13 zeolites

“…Propylene is a very important raw material for polypropylene, propylene oxide, and acrylonitrile synthesis and is usually produced from naphtha cracking [25,26]. To meet increasing demand, propylene has been produced by several new strategies, such as propane dehydrogenation and the metathesis of ethylene and 2-butene [27,28].…”