METHOD OF CRACKING IN HYDROGEN ENVIRONMENT FOR PRODUCING MIDDLE DISTILLATE FROM LIGHT HYDROCARBON FEED MATERIALS Russian patent published in 2023 - IPC C10G65/12 

FIELD: cracking process.

SUBSTANCE: invention relates to a cracking process in a hydrogen environment for converting light gas oil feedstock to produce a diesel product, comprising: introducing said light gas oil feedstock into a first reaction zone formed by a first reactor and containing a first pre-treatment catalyst, obtaining from said first reaction zone a first outgoing reactor effluent; introducing said first effluent into a second reaction zone formed by the second reactor and containing the first hydrogen cracking catalyst. Obtaining from the said second reaction zone the second reactor effluent and its introduction into the first separation zone formed by the first separator vessel, with separation into the first separator vapour and the first separator liquid, which is introduced into the distillation column, which ensures the distillation separation of the said first separator liquid to obtain at least a bottom product and another product. Mixing the nitrogen-containing compound with said bottom product prior to its introduction into the third reaction zone. Introduction of said bottom product into the third reaction zone formed by the third reactor, wherein inside the third reaction zone there is an upper layer having the volume of the upper layer and containing the second pre-treatment catalyst, and a lower layer having the volume of the lower layer and containing the second cracking catalyst in a hydrogen medium, wherein the second pre-treatment catalyst comprises a supporting inorganic oxide material and a hydrogenation metal component, obtaining from said third reaction zone a third reactor effluent and introducing it into a second separation zone formed by a second separator vessel providing a means of separating said third reactor effluent into a second separator steam and a second separator liquid, which is introduced into said distillation column.

EFFECT: obtaining high quality diesel fuel with ultra-low sulphur content.

7 cl, 1 dwg