# US 8,785,701 B2 · Co-processing of diesel biofeed and kerosene range hydrocarbons

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- Number: US 8,785,701 B2
- Document ID: US8785701B2
- Status: Granted
- Kind: B2
- Application number: 12/653,480
- Filed: 2009-12-15
- Published: 2010-07-15
- Granted: 2014-07-22
- Earliest claimed: 2008-12-24
- Assignees: ExxonMobil Research and Engineering Company
- Applicants: Kathryn Y. Cole; William E. Lewis
- Inventors: Kathryn Y. Cole; William E. Lewis
- Web page: https://patentgrep.com/patent/US8785701B2

## CPC

- C10G 3/50: {in the presence of hydrogen, hydrogen donors or hydrogen generating compounds}
- C10G 3/46: {in combination with chromium, molybdenum, tungsten metals or compounds thereof}
- C10G 45/02: to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
- C10G 65/043: {at least one step being a change in the structural skeleton}
- C10G 2300/1014: of vegetal origin
- C10G 2300/1018: of animal origin
- C10G 2300/1051: Kerosene having a boiling range of about 180 - 230 °C
- C10G 2300/202: Heteroatoms content, i.e. S, N, O, P
- C10G 2300/4006: Temperature
- C10G 2300/4018: Spatial velocity, e.g. LHSV, WHSV
- C10G 2400/04: Diesel oil
- C10G 2400/08: Jet fuel
- Y02E 50/10: Biofuels, e.g. bio-diesel
- 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
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Processes are provided for producing a diesel fuel product having a sulfur content of 10 ppm by weight or less from feed sources that include up to 50% by weight of a biocomponent feedstock. The biocomponent feedstock is co-processed with a heavy oil feed in a severe hydrotreating stage. The product from the severe hydrotreatment stage is fractionated to separate out a diesel boiling range fraction, which is then separately hydrotreated.

## Claims

### Claim 1

A method for producing a low sulfur diesel product, comprising:
filtering a diesel boiling range biocomponent portion;
forming a blended feedstock containing both a mineral portion and from about 0.1 wt % to about 50 wt % of the diesel boiling range biocomponent portion, the mineral portion having a boiling range from about 125° C. to about 300° C.; and
hydrotreating the blended feedstock under effective hydrotreating conditions wherein the effective hydrotreating conditions include hydrodesulfurization and hydrodeoxygenation conditions which include an LHSV of 0.5 to 1.5 hr−1, a hydrogen partial pressure from about 100 to about 500 psig, a treat as rate of less than about 3000 scf/b of at least 80% hydrogen (remainder inert gas), and a temperature of from about 500-750° F., to produce a liquid phase product stream; and
dewaxing the liquid phase product stream by contacting the liquid phase product stream with a dewaxing catalyst under dewaxing conditions which include a temperature from 280 to 380° C. (536 to 716° F.), a pressure from 30 to 3000 psig, an LHSV from 0.1 to 5.0 hr−1, and a treat gas rate from 500 to 5000 scf/b to produce a diesel fuel product.

### Claim 2 (depends on 1)

The method of claim 1, wherein the biocomponent feedstock comprises a plant oil or fat, an animal oil or fat, a fish oil or fat, or an algae oil or fat.

### Claim 3 (depends on 2)

The method of claim 2, wherein the biocomponent feedstock comprises palm oil.

### Claim 4 (depends on 1)

The method of claim 1, further comprising hydroisomerizing the diesel fuel product.

### Claim 5

The method of claim wherein at least 95 wt % of the oxygen is removed from the blended feedstock.

### Claim 6

The method of claim, wherein at least 98 wt % of the oxygen is removed from the blended feedstock.

### Claim 7 (depends on 1)

The method of claim 1, wherein the oxygen content of the diesel fuel product is 0.1 wt % or less.

### Claim 8 (depends on 1)

The method of claim 1, wherein the oxygen content of the diesel fuel product is 0.05 wt % or less.

### Claim 9 (depends on 1)

The method of claim 1, wherein the oxygen content of the diesel fuel product is 0.01 wt % or less.