Upgrading bio-waste in FCC

Patent metadata

Field	Value
Publication number	US-12091617-B2
Application number	US-202217837651-A
Country	US
Kind code	B2
Filing date	Jun 10, 2022
Priority date	Jun 18, 2021
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A method may include: providing bio waste stream wherein the bio waste stream comprises at least one bio waste selected from the group consisting of palm oil mill effluent, soapstock, and combinations thereof; introducing the bio waste effluent stream into a fluidized catalytic cracking unit; contacting the bio waste with a catalyst in the fluidized catalytic cacking unit; and cracking at least a portion of the bio waste stream to form cracked products that comprise a cracked product stream.

First claim

What is claimed is:

1. A method comprising:
providing a bio waste stream, wherein the bio waste stream comprises at least one bio waste including palm oil mill effluent, and wherein the palm oil mill effluent stream comprises fatty acid;
introducing the palm oil mill effluent stream into an esterification unit;
reacting at least a portion of the fatty acid in the palm oil mill effluent stream with an alcohol to produce an esterified palm oil mill effluent stream;
introducing the bio waste effluent stream with the esterified palm oil mill effluent stream into a fluidized catalytic cracking unit;
contacting the bio waste effluent stream with the esterified palm oil mill effluent stream with a catalyst in the fluidized catalytic cracking unit; and
cracking at least a portion of the bio waste effluent stream with the esterified palm oil mill effluent stream to form cracked products that comprise a cracked product stream.

2. The method of claim 1 , wherein the bio waste stream comprises the palm oil mill effluent, wherein the palm oil mill effluent is derived from a palm oil process, wherein the palm oil mill effluent comprises water, fatty acid, and solids, and wherein the method further comprises:
separating at least a portion of the water and the solids to produce a purified palm oil mill effluent, wherein the purified palm oil mill effluent is introduced into the fluidized catalytic cracking unit.

3. The method of claim 2 , wherein the step of separating comprises evaporation, distillation, centrifuging, decanting, and combinations thereof.

4. The method of claim 2 , wherein the purified palm oil mill effluent stream is at least 95 wt. % fatty acid.

5. The method of claim 1 , wherein the palm oil mill effluent stream comprises at least one fatty acid selected from the group consisting of capric acid, lauric acid, myristic acid, pentadedecyclic acid, palmitic acid, palmitoleic acid, heptadecanoic acid, cia-10-heptadecanoic acid, stearic acid, elaidic acid, oleic acid, linoleic acid, alpha-linolenic acid, linolenic acid, arachidic acid, eicosenoic acid, heneicosanoic acid, behenic acid, and combinations thereof.

6. The method of claim 1 , wherein the alcohol comprises at least one alcohol selected from the group consisting of a monoalcohol, a diol, a trial, and combinations thereof with carbon numbers ranging from C1-C5.

7. The method of claim 1 , further comprising cracking at a portion of the bio waste stream in the presence of a hydrocarbon co-feed.

8. The method of claim 1 , further comprising cracking at a portion of the bio waste stream in the presence of a hydrocarbon co-feed.

9. The method of claim 1 , further comprising cracking the bio waste stream in the presence of a hydrocarbon co-feed comprising vacuum gas oil having an initial boiling point of 340° C. or greater.

10. The method of claim 1 , further comprising separating at least a portion of the cracked product stream in a distillation unit to produce a hydrocarbon bio-fuel with carbon numbers ranging from C3-C20.

11. The method of claim 1 , wherein the bio waste stream further comprises at least one additional oil selected from the group consisting of tall oil, non-edible oils, and combinations thereof, wherein the non-edible oils comprise at least one oil selected from the group consisting of jatropha, neem, karanja, rubber seed, mahua, and silk cotton tree oil, and combinations thereof.

Assignees

• Exxonmobil Technology & Engineering Company

Inventors

• Xu Xiaochun
• Campani Dario
• Kim Hyung Rae

Classifications

• C11C3/003

  by esterification of fatty acids with alcohols (C11C3/02 takes precedence) · CPC title

• C10L2200/0484

  Vegetable or animal oils · CPC title

• C10L1/04

  essentially based on blends of hydrocarbons · CPC title

• C10G2400/02

  Gasoline · CPC title

• C10G2300/202

  Heteroatoms content, i.e. S, N, O, P · CPC title