Gas-assisted liquid fuel oxygen reactor

Patent metadata

Field	Value
Publication number	US-10995948-B2
Application number	US-201916267030-A
Country	US
Kind code	B2
Filing date	Feb 4, 2019
Priority date	Mar 31, 2016
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

The present disclosure is directed to systems and methods for low-CO2 emission combustion of liquid fuel with a gas-assisted liquid fuel oxygen reactor. The system comprises an atomizer that sprays fuel and CO2 into an evaporation zone, where the fuel and CO2 is heated into a vaporized form. The system comprises a reaction zone that receives the vaporized fuel and CO2. The system includes an air vessel having an air stream, and a heating vessel adjacent to the air vessel that transfers heat to the air vessel. The system comprises an ion transport membrane in flow communication with the air vessel and reaction zone. The ion transport membrane receives O2 permeating from the air stream and transfers the O2 into the reaction zone resulting in combustion of fuel. The combustion produces heat and creates CO2 exhaust gases that are recirculated in the system limiting emission of CO2.

First claim

What is claimed is:

1. A method for low-CO 2 emission combustion of a liquid fuel in a gas-assisted liquid fuel oxygen reactor, the method comprising:
injecting a liquid fuel into an evaporation zone, wherein the fuel is injected via a CO 2 -assisted atomizer adapted to spray the liquid fuel and CO 2 into the evaporation zone;
vaporizing the liquid fuel and CO 2 in the evaporation zone, resulting in a mixture of evaporated fuel and CO 2 ;
flowing the mixture of evaporated fuel and CO 2 into a reaction zone which is coaxial to the evaporation zone;
supplying a flow of air into an air vessel, wherein the air vessel and reaction zone are separated by an ion transport membrane, and wherein O 2 permeates from the flow of air through the ion transport membrane and into the reaction zone resulting in an O 2 -depleted air stream in the air vessel;
delivering a hot air and gaseous fuel stream into a heating vessel adjacent to the air vessel, wherein heat from the hot air and gaseous fuel stream is transferred to the air vessel via conductive plates separating the heating vessel and the air vessel; and
combusting the evaporated fuel and CO 2 in the presence of O 2 in the reaction zone to produce heat and create an exhaust gas stream.

2. The method of claim 1 , further comprising:
heating the liquid fuel prior to injection of the liquid fuel into the evaporation zone.

3. The method of claim 2 , wherein the liquid fuel is heated via a heat exchanger.

4. The method of claim 3 , wherein the step of heating the liquid fuel comprises:
recirculating the O 2 -depleted air stream to the heat exchanger upstream of the reaction zone, wherein the recirculated O 2 -depleted air stream transfers heat to the liquid fuel prior to injection of the liquid fuel into the CO 2 -assisted atomizer.

5. The method of claim 1 , wherein the step of vaporizing the liquid fuel comprises:
transferring heat from the hot air and gaseous fuel stream to the evaporation zone via conductive plates lining an outer wall of the evaporation zone.

6. The method of claim 1 , further comprising:
recirculating the exhaust gas stream to transfer heat to the air vessel.

7. The method of claim 6 , wherein the heat is transferred to the air vessel via one or more conductive plates lining the air vessel.

8. The method of claim 1 , further comprising:
filtering the mixture of evaporated fuel and CO 2 prior to flowing the mixture into the reaction zone.

9. The method of claim 8 , wherein the evaporated fuel and CO 2 are filtered via a fuel filter.

10. The method of claim 1 , wherein the air vessel and the ion transport membrane are located within the reaction zone and wherein the flow of the mixture of evaporated fuel and CO 2 into the reaction zone is perpendicular to the ion transport membrane.

11. The method of claim 10 , wherein the ion transport membrane is a tube surrounding the air vessel.

12. The method of claim 10 , wherein the reaction zone is defined by a first housing that contains a plurality of ion transport membranes that are parallel to one another.

13. The method of claim 12 , further including a second housing that surrounds the first housing and defines an air plus gaseous fuel stream conduit that is located between the first and second housings.

14. The method of claim 13 , further including the step of directing an air plus gaseous fuel stream into the air plus gaseous fuel stream conduit, whereby the air plus gaseous fuel stream flows in a direction that is perpendicular to the plurality of ion transport membranes.

Assignees

• Saudi Arabian Oil Co
• Univ King Fahd Pet & Minerals

Inventors

• Ben-Mansour Rached
• Habib Mohamed A
• Jamal Aqil

Classifications

• F23D11/10 Primary

  the spraying being induced by a gaseous medium, e.g. water vapour · CPC title

• F23D11/404

  Flame tubes (not forming part of the burner F23M9/06) · CPC title

• F23D3/00

  Burners using capillary action · CPC title

• F23D5/12

  Details · CPC title

• F23N3/00

  Regulating air supply or draught (conjointly with fuel supply F23N1/00) · CPC title