# US 2015/0083643 A1 · Gas oil hydroprocess > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0083643 A1 - Document ID: US20150083643A1 - Status: Published application - Kind: A1 - Application number: 14/481,952 - Filed: 2014-09-10 - Published: 2015-03-26 - Earliest claimed: 2013-09-24 - Assignees: E. I. Du Pont de Nemours and Company - Applicants: E I Du Pont De Nemours and Company - Inventors: HASAN DINDI; THANH GIA TA; VINCENT ADAM KUPERAVAGE, JR.; ALAN HOWARD PULLEY; SCOTT LOUIS WEBSTER - Web page: https://patentgrep.com/patent/US20150083643A1 ## CPC - C10G 65/12: including cracking steps and other hydrotreatment steps - C10G 45/02: to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing - C10G 45/08: in combination with chromium, molybdenum, or tungsten metals, or compounds thereof - C10G 47/00: Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions (C10G15/00 takes precedence; destructive hydrogenation of non-melting solid carbonaceous or similar materials C10G1/06) - C10G 47/06: Sulfides - C10G 47/20: the catalyst containing other metals or compounds thereof - C10G 47/36: Controlling or regulating - C10G 2300/1059: Gasoil having a boiling range of about 330 - 427 °C - C10G 2300/802: Diluents - C10G 2400/04: Diesel oil - C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES ## Abstract A process for the hydroprocessing of a gas oil (GO) hydrocarbon feed to provide high yield of a diesel fraction. The process comprises a liquid-full hydrotreating reaction zone followed by a liquid-full hydrocracking reaction zone. A refining zone may be integrated with the hydrocracking reaction zone. Ammonia and other gases formed during the hydrotreatment are removed in a separation step prior to hydrocracking. ## Claims ### Claim 1 A process for hydroprocessing a gas oil, comprising: (a) contacting a gas oil with hydrogen and optional first diluent to form a first liquid feed wherein hydrogen is dissolved in the first liquid feed; (b) contacting the first liquid feed with a first catalyst in a liquid-full hydrotreating reaction zone to produce a first effluent; (c) optionally recycling a portion of the first effluent for use as all or part of the first diluent in step (a); (d) in a separation zone, separating dissolved gases from the portion of the first effluent not recycled in step (c) to produce a separated product; (e) contacting the separated product with hydrogen and optional second diluent to form a second liquid feed, wherein hydrogen is dissolved in the second liquid feed; (f) contacting the second liquid feed with a second catalyst in a liquid-full hydrocracking reaction zone to produce a second effluent; (g) optionally recycling a portion of the second effluent for use as all or part of the second diluent in step (e); and (h) in a refining zone upstream of or downstream from the hydrocracking reaction zone, separating one or more refined products and a heavy oil fraction from (1) the portion of the first effluent not recycled, when the refining zone is upstream of the hydrocracking reaction zone, or (2) the portion of the second effluent not recycled when the refining zone is downstream from the hydrocracking reaction zone; wherein the first catalyst is a hydrotreating catalyst and the second catalyst is a hydrocracking catalyst. ### Claim 2 (depends on 1) The process of claim 1 further comprising recovering at least a diesel fraction from the refining zone. ### Claim 3 (depends on 1) The process of claim 1 wherein the second catalyst comprises a non-precious metal and an oxide support. ### Claim 4 (depends on 1) The process of claim 1 wherein the refining zone is downstream from the hydrocracking reaction zone and the heavy oil fraction is combined with the portion of the first effluent not recycled or with the separated product upstream of the hydrocracking zone. ### Claim 5 (depends on 4) The process of claim 4 wherein the heavy oil fraction is combined with the portion of the first effluent not recycled upstream of the separation zone. ### Claim 6 (depends on 4) The process of claim 4 wherein the heavy oil fraction is combined with the separated product downstream from the separation zone and upstream of the hydrocracking reaction zone. ### Claim 7 (depends on 1) The process of claim 1 wherein the refining zone is upstream from the hydrocracking reaction zone and the separation zone is the refining zone. ### Claim 8 (depends on 7) The process of claim 7 wherein the portion of the second effluent not recycled is combined with the portion of the first effluent not recycled upstream of the refining zone. ### Claim 9 (depends on 7) The process of claim 7 wherein the heavy oil fraction from the refining zone is fed to the hydrocracking reaction zone. ### Claim 10 (depends on 1) The process of claim 1 wherein the hydrotreating reaction zone has multiple catalyst beds and wherein hydrogen is fed between the beds. ### Claim 11 (depends on 1) The process of claim 1 wherein the hydrocracking reaction zone has multiple catalyst beds and wherein hydrogen is fed between the beds. ### Claim 12 (depends on 1) The process of claim 1 wherein the optional first diluent is used and the optional second diluent is used. ### Claim 13 (depends on 12) The process of claim 12 wherein the first diluent consists of a portion of the first effluent and the second diluent consists of a portion of the second effluent. ### Claim 14 (depends on 13) The process of claim 13 wherein the first recycle ratio is at least 1 and the second recycle ratio is at least 1. ### Claim 15 (depends on 13) The process of claim 13 wherein the first recycle ratio is no more than 10 and the second recycle ratio is no more than 10. ### Claim 16 (depends on 1) The process of claim 1 wherein the separation zone has a flash, a stripper, a fractionator, or a combination thereof. ### Claim 17 (depends on 1) The process of claim 1 wherein the refining zone has a fractionator. ### Claim 18 (depends on 1) The process of claim 1 wherein the yield of the diesel fraction is at least about 70%. ### Claim 19 (depends on 1) The process of claim 1 wherein the yield of the naphtha fraction is no more than about 10%.