# US 2013/0152459 A1 · Hydrotreating methods and hydrotreating systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0152459 A1 - Document ID: US20130152459A1 - Status: Published application - Kind: A1 - Application number: 13/327,516 - Filed: 2011-12-15 - Published: 2013-06-20 - Earliest claimed: 2011-12-15 - Assignees: Uop LLC - Inventors: Soumendra M. Banerjee; Richard K. Hoehn - Web page: https://patentgrep.com/patent/US20130152459A1 ## CPC - C10G 45/02: to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing - C10G 3/42: {Catalytic treatment} - C10G 3/50: {in the presence of hydrogen, hydrogen donors or hydrogen generating compounds} - C10G 49/002: {Apparatus for fixed bed hydrotreatment processes} - C10G 65/04: including only refining steps - C10L 1/026: {for compression ignition} - C10L 1/08: for compression ignition - C10G 2300/1055: Diesel having a boiling range of about 230 - 330 °C - C10G 2300/4006: Temperature - C10G 2400/04: Diesel oil - Y02P 30/20: using bio-feedstock - 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 - C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract Hydrotreating methods and hydrotreating systems are provided herein. In an embodiment, a hydrotreating method includes heating a petroleum-based diesel feed. The heated petroleum-based diesel feed is introduced to a hydrotreating process. An unheated carbonaceous feed is introduced to the hydrotreating process separate from the heated petroleum-based diesel feed. The heated petroleum-based diesel feed and the unheated carbonaceous feed are co-processed in the hydrotreating process. In an embodiment of a hydrotreating system, the hydrotreating system includes a hydrotreating unit, and a heating apparatus, with the heating apparatus heating petroleum-based diesel feed prior to introduction to the hydrotreating unit. The unheated carbonaceous feed source is in fluid communication with the hydrotreating unit for introducing an unheated carbonaceous feed to the hydrotreating unit separate from the petroleum-based diesel feed. ## Claims ### Claim 1 A hydrotreating method comprising the steps of: heating a petroleum-based diesel feed; introducing the heated petroleum-based diesel feed to a hydrotreating process; introducing an unheated carbonaceous feed to the hydrotreating process separate from the heated petroleum-based diesel feed; and co-processing the heated petroleum-based diesel feed and the unheated carbonaceous feed in the hydrotreating process. ### Claim 2 (depends on 1) The method of claim 1, wherein the unheated carbonaceous feed is further defined as a biofuel feed comprising a source of fatty acids or derivatives thereof. ### Claim 3 (depends on 1) The method of claim 1, wherein the hydrotreating process comprises multiple stages, and wherein the heated petroleum-based diesel feed is introduced to a first stage and the unheated carbonaceous feed is fed to a later stage that is downstream of the first stage of the hydrotreating process. ### Claim 4 (depends on 3) The method of claim 3, wherein the unheated carbonaceous feed is fed to at least two later stages that are downstream of the first stage of the hydrotreating process. ### Claim 5 (depends on 3) The method of claim 3, further comprising the step of mixing a quench gas and the unheated carbonaceous feed prior to introducing the unheated carbonaceous feed to the hydrotreating process. ### Claim 6 (depends on 5) The method of claim 5, further comprising the step of controlling temperature within the later stage that is downstream of the first stage of the hydrotreating process through flow of the quench gas and unheated carbonaceous feed mixture to the later stage. ### Claim 7 (depends on 1) The method of claim 1, further comprising the step of mixing a carrier gas and the petroleum-based diesel feed prior to heating the petroleum-based diesel feed. ### Claim 8 (depends on 7) The method of claim 7, further comprising the step of mixing a quench gas and the unheated carbonaceous feed prior to introducing the unheated carbonaceous feed to the hydrotreating process, wherein the quench gas and the carrier gas are provided from a common gas source. ### Claim 9 A hydrotreating method comprising the steps of: heating a petroleum-based diesel feed in a heating apparatus; introducing the heated petroleum-based diesel feed to a hydrotreating unit from the heating apparatus; introducing an unheated biofuel feed to the hydrotreating unit separate from the petroleum-based diesel feed, the unheated biofuel feed comprising a source of fatty acids or derivatives thereof; and co-processing the heated petroleum-based diesel feed and the unheated biofuel feed in the hydrotreating unit. ### Claim 10 (depends on 9) The method of claim 9, wherein the hydrotreating unit comprises a fixed-bed hydrotreating reactor comprising multiple zones, and wherein the heated petroleum-based diesel feed is introduced to a first zone of the fixed-bed hydrotreating reactor and the unheated biofuel feed is fed to a later zone that is downstream of the first zone of the fixed-bed hydrotreating reactor. ### Claim 11 (depends on 10) The method of claim 10, wherein the unheated biofuel feed is fed to at least two later zones that are downstream of the first zone of the fixed-bed hydrotreating reactor. ### Claim 12 (depends on 10) The method of claim 10, further comprising the step of mixing a quench gas and the unheated biofuel feed prior to introducing the unheated biofuel feed to the fixed-bed hydrotreating reactor. ### Claim 13 (depends on 12) The method of claim 12, further comprising the step of controlling temperature within the later zone that is downstream of the first zone of the fixed-bed hydrotreating reactor with a temperature controller that controls flow of the quench gas and unheated biofuel feed mixture to the later zone. ### Claim 14 (depends on 9) The method of claim 9, further comprising the step of mixing a carrier gas and the petroleum-based diesel feed prior to heating the petroleum-based diesel feed. ### Claim 15 (depends on 14) The method of claim 14, further comprising the step of mixing a quench gas and the unheated biofuel feed prior to introducing the unheated biofuel feed to the hydrotreating unit, wherein the quench gas and the carrier gas are fed from a common gas source. ### Claim 16 A hydrotreating system comprising: a hydrotreating unit configured for fluid communication with a petroleum-based diesel feed source; a heating apparatus for heating petroleum-based diesel feed from the petroleum-based diesel feed source prior to introduction to said hydrotreating unit, said heating apparatus in fluid communication with said hydrotreating unit for introducing heated petroleum-based diesel feed from said heating apparatus to said hydrotreating unit; and wherein said hydrotreating unit is also configured for fluid communication with an unheated carbonaceous feed source for introducing an unheated carbonaceous feed to said hydrotreating unit separate from the petroleum-based diesel feed. ### Claim 17 (depends on 16) The hydrotreating system of claim 16, wherein said hydrotreating unit comprises a fixed-bed hydrotreating reactor comprising multiple zones with each zone comprising a catalytic bed, and wherein the heated petroleum-based diesel feed is fed to a first zone of said fixed-bed hydrotreating reactor and the unheated carbonaceous feed is fed to a later zone that is downstream of said first zone of said fixed-bed hydrotreating reactor. ### Claim 18 (depends on 16) The hydrotreating system of claim 16, wherein a quench gas supply is in fluid communication with the unheated carbonaceous feed source for mixing quench gas and the unheated carbonaceous feed. ### Claim 19 (depends on 16) The hydrotreating system of claim 16, further comprising a heat exchanger upstream of said heating apparatus, wherein co-processed effluent from said hydrotreating unit is fed through said heat exchanger to heat the petroleum-based diesel feed. ### Claim 20 (depends on 19) The hydrotreating system of claim 19, wherein a carrier gas supply is in fluid communication with the petroleum-based diesel feed source upstream of said heat exchanger for mixing carrier gas and the petroleum-based diesel feed, a quench gas supply is in fluid communication with the unheated carbonaceous feed source for mixing quench gas and the unheated carbonaceous feed separate from the petroleum-based diesel feed, and wherein the quench gas supply and the carrier gas supply are fed from a common gas source.