Process to obtain fuel from biomass in fluid catalytic cracking

Patent metadata

Field	Value
Publication number	US-10253273-B2
Application number	US-201715441668-A
Country	US
Kind code	B2
Filing date	Feb 24, 2017
Priority date	Feb 24, 2016
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

The present invention relates to a process for obtaining fuel from biomass which comprises the introduction of the catalyst (3) in the base of an cracking section (4), wherein said catalyst (3) at high temperature comes in contact with a gas stream of light hydrocarbons rich in hydrogen (1), wherein the catalyst (3) and hydrocarbon (1) then come in contact with a lignocellulosic liquid stream (2) in the same cracking section (4), creating the reaction mixture (5) that, soon after, comes into contact with the main stream containing the traditional fossil load of a FCC (6) in a second cracking section (7).

First claim

The invention claimed is:

1. A process to obtain fuels from biomass via fluid catalytic cracking (FCC), comprising:
introducing a gas stream comprising saturated hydrocarbons ( 1 ), a lignocellulosic liquid stream ( 2 ), and a catalyst ( 3 ) into a first reaction section ( 4 ) of a FCC reactor;
contacting the gas stream ( 1 ), the lignocellulosic liquid stream ( 2 ) and the catalyst ( 3 ) in the first reaction section ( 4 ) under first reaction conditions, which comprise a temperature in a range of from 500 to 800° C., to produce a reaction medium ( 5 ); and
contacting the reaction medium ( 5 ) with a main stream comprising a traditional fossil load ( 6 ) in a second reaction section ( 7 ) of the FCC reactor under second reaction conditions to produce reaction products ( 8 ).

2. The process according to claim 1 , characterized by separating the reaction products ( 8 ) obtained in the second reaction section ( 7 ) and subjecting the reaction products ( 8 ) to a hydrotreatment step to obtain high octane fuel.

3. The process according to claim 2 , characterized by the hydrotreatment step employing a temperature between 350° C. and 390° C. and, as a catalyst, a metal oxide totally or partially converted into sulfides (active phase) and supported on y-alumina (y-Al 2 O 3 ).

4. The process according to claim 1 , characterized by the first reaction conditions comprising a temperature in a range of from 500° C. to 700° C., a pressure in a range of from 200 kPa to 400 kPa, a catalyst/biomass ratio in a range of from 10 to 40,and a contact time in a range of from 0.1 to 0.9 seconds.

5. The process according to claim 1 , characterized by the second reaction conditions comprising a speed space in a range of from 200 h−1 to 400 h−1, a contact time in a range of from 1.5 to 3.0 seconds, a temperature in a range of from 500° C. and 620° C. and a catalyst/hydrocarbons ratio in a range of from 5 to 20.

6. The process according to claim 1 , characterized in that the lignocellulosic liquid stream ( 2 ) is derived from the pulp and paper industry.

7. The process according to claim 1 , characterized in that the lignocellulosic liquid stream ( 2 ) is obtained by fast pyrolysis processing units.

8. The process according to claim 1 , characterized in that the biomass corresponds to 0.1 to 10% by weight relative to a total amount of load added to the FCC reactor.

9. The process according to claim 1 , characterized by the traditional fossil load ( 6 ) being a petroleum refinery stream having a hydrogen content of at least 10% by weight based on a total weight of the traditional fossil load ( 6 ).

10. The process according to claim 1 , characterized in that the gas stream ( 1 ) comprises one or more saturated hydrocarbons selected from the group consisting of propane, butane, ethane, pentane and hexane.

11. The process according to claim 10 , characterized in that the stream ( 1 ) corresponds to 0.1 to 10% by weight relative to the total amount load added to the FCC reactor.

12. The process according to claim 1 , characterized in that the catalyst ( 3 ) is a solid acid catalyst.

13. The process according to claim 12 , characterized in that the solid acid catalyst is a zeolitic catalyst.

14. The process according to claim 1 , wherein the lignocellulosic liquid stream ( 2 ) is obtained from a Kraft process.

15. The process according to claim 1 , characterized by the traditional fossil load ( 6 ) having a hydrogen content of at least 10% by weight based on a total weight of the traditional fossil load ( 6 ).

16. The process according to claim 1 , characterized by the first reaction section ( 4 ) of the FCC reactor being located at a base of a riser.

17. A process to obtain fuels from biomass via fluid catalytic cracking (FCC), comprising:
introducing a gas stream comprising saturated hydrocarbons (1), a lignocellulosic liquid stream (2), and a catalyst (3) into a first reaction section (4) of a FCC reactor;
contacting the gas stream (1), the lignocellulosic liquid stream (2) and the catalyst (3) in the first reaction section (4) under first reaction conditions, which comprise a temperature in a range of from 500 to 800° C., to produce a reaction medium (5);
contacting the reaction medium (5) with a main stream comprising a traditional fossil load (6) in a second reaction section (7) of the FCC reactor under second reaction conditions to produce reaction products (8); and
separating the reaction products (8) obtained in the second reaction section (7) and subjecting the reaction products (8) to a hydrotreatment step to obtain gasoline with a Research Octane Number (RON) above 90.

Assignees

• Petroleo Brasileiro Sa Petrobras
• Petroleo Brasileiro S A —Petrobras

Inventors

• Pinho Andrea De Rezende
• Mendes Fabio Leal

Classifications

• C10G2300/202

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

• Y02P30/20

  using bio-feedstock · CPC title

• C10G2400/02

  Gasoline · CPC title

• C10G69/04 Primary

  including at least one step of catalytic cracking in the absence of hydrogen · CPC title

• C10G51/026

  only catalytic cracking steps · CPC title