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A new domestic catalytic cracking process with a high yield of light olefins which corresponds to the best foreign analogs with respect to the technical and economic indexes is described. This process differs from the traditional process by more severe conditions of cracking the feedstock, an increased content of ZSM-5 additive in the equilibrium catalyst, and conducting repeated cracking of light naphtha in an additional continuous reactor. [ABSTRACT FROM AUTHOR]

The structure of the yield of products of catalytic cracking of vacuum gasoil and repeated cracking of light naphtha in the high-temperature region was investigated. The results of the studies served as the basis for developing catalytic cracking technology with a high yield of light olefins. [ABSTRACT FROM AUTHOR]

Updating of the reactor block in the cat cracker with introduction of a set of advanced designs that allowed significantly increasing the efficiency and reliability of operation of the unit and creating the required conditions for converting it to three-and four-year runs between overhauls is described. [ABSTRACT FROM AUTHOR]

Revamping of the 1A/1M cat cracker with introduction of new technologies and equipment units is described: feedstock and sludge nozzles, single–stage reactor cyclones, two–stage catalyst stripping, air– and steam–distributing devices, and two–stage regenerator cyclones. The output of the unit increased by 40%, and the yield and octane characteristics of the naphtha cut increased as a result, and grounds were created for converting the unit to a two–year operating cycle between repairs. [ABSTRACT FROM AUTHOR]