Fire tube boiler system with ion transport membranes

Patent metadata

Field	Value
Publication number	US-10018352-B1
Application number	US-201715493976-A
Country	US
Kind code	B1
Filing date	Apr 21, 2017
Priority date	Apr 21, 2017
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A fire tube boiler system including a plurality of oxygen transport reactors that heats a working fluid. Each oxygen transport reactor has a first inner tube with an ion transport membrane that receives air from a first supply line, extracts oxygen from the air, and evacuate oxygen depleted air through a first exhaust line, a second inner tube that surrounds the first inner tube that receives the oxygen from the ion transport membrane and a mixture of fuel and carbon dioxide from a second supply line and produces a oxy-combustion, and an peripheral tube that surrounds the second inner tube and evacuates the exhaust gases produced by the oxy-combustion and transfer heat from exhaust gases to the working fluid and the ion transport membrane.

First claim

The invention claimed is:

1. A fire tube boiler system comprising:
a vessel that contains a working fluid;
a plurality of oxygen transport reactors that is positioned inside the vessel and that heats the working fluid;
a first supply line that provides air to the plurality of oxygen transport reactors;
a second supply line that provides a mixture of fuel and carbon dioxide to the plurality of oxygen transport reactors;
a first exhaust line that evacuates oxygen depleted air from the plurality of oxygen transport reactors; and
a second exhaust line that evacuates exhaust gases from the plurality of oxygen transport reactors,
wherein
each oxygen transport reactor of the plurality of oxygen transport reactors includes:
a first inner tube having:
an upstream end that connects the first supply line to receive the air,
a downstream end that connects the first exhaust line to evacuate the oxygen depleted air, and
an ion transport membrane that connects the upstream end with the downstream end to extract oxygen from the air and form the oxygen depleted air;

a second inner tube that surrounds the first inner tube to receive the oxygen from the ion transport membrane and that connects the second supply line to receive the mixture of fuel and carbon dioxide to react with the oxygen in a oxy-combustion; and
a peripheral tube that surrounds the second inner tube and connects the second exhaust line through an upstream end to evacuate the exhaust gases produced by the oxy-combustion and transfer heat from exhaust gases to the working fluid and the ion transport membrane.

2. The fire tube boiler system of claim 1 further including a condenser between the second exhaust line and the second supply line to condensate water contained in the exhaust gases and extract carbon dioxide.

3. The fire tube boiler system of claim 2 wherein the condenser is connected to the second supply line to provide carbon dioxide to the mixture of fuel and carbon dioxide.

4. The fire tube boiler system of claim 1 , wherein the first inner tube, the second inner tube, and the peripheral tube are positioned concentrically and have a cylindrical shape.

5. The fire tube boiler system of claim 1 , wherein the vessel further includes a plurality of first exhaust ducts that connects the first inner tube to the first exhaust line to evacuate the oxygen depleted air and transfer heat from the oxygen depleted air to the working fluid.

6. The fire tube boiler system of claim 1 , wherein the vessel further includes a plurality of second exhaust ducts that connects the peripheral tube to the second exhaust line to evacuate the exhaust gases and further transfer heat from the exhaust gases to the working fluid.

7. A fire tube boiler system comprising:
a vessel that contains a working fluid;
a plurality of oxygen transport reactors that is positioned inside the vessel and that heats the working fluid;
a first supply line that provides air to the plurality of oxygen transport reactors;
a second supply line that provides a mixture of fuel and carbon dioxide to the plurality of oxygen transport reactors;
a third supply line that provides a supplementary mixture of fuel and air to the plurality of oxygen transport reactors;
a first exhaust line that evacuates oxygen depleted air from the plurality of oxygen transport reactors; and
a second exhaust line that evacuates exhaust gases from the plurality of oxygen transport reactors,
wherein
each oxygen transport reactor of the plurality of oxygen transport reactors includes:
a first inner tube having:
an upstream end that connects the first supply line to receive the air,
a downstream end that connects the first exhaust line to evacuate the oxygen depleted air, and
an ion transport membrane that connects the upstream end with the downstream end to extract oxygen from the air and form the oxygen depleted air;

a second inner tube that surrounds the first inner tube to receive the oxygen from the ion transport membrane and that connects the second supply line to receive the mixture of fuel and carbon dioxide to react with the oxygen in a oxy-combustion;
a third inner tube that connects the third supply line to provide a supplementary combustion and that surrounds the second inner tube to provide heat to the ion transport membrane; and
a peripheral tube that surrounds the third inner tube and connects the second exhaust line through an upstream end to evacuate the exhaust gases produced by the oxy-combustion and transfer heat from exhaust gases to the working fluid and the ion transport membrane.

8. The fire tube boiler system of claim 7 further including a condenser between the second exhaust line and the second supply line to condensate water contained in the exhaust gases and extract carbon dioxide.

9. The fire tube boiler system of claim 8 wherein the condenser is connected to the second supply line to provide carbon dioxide to the mixture of fuel and carbon dioxide.

10. The fire tube boiler system of claim 7 , wherein the first inner tube, the second inner tube, and the peripheral tube are positioned concentrically and have a cylindrical shape.

11. The fire tube boiler system of claim 7 , wherein the vessel further includes a plurality of first exhaust ducts that connects the first inner tube and the third inner tube to the first exhaust line to evacuate the oxygen depleted air and supplementary exhaust gases produced by the supplementary combustion and transfer heat from the oxygen depleted air and supplementary exhaust gases to the working fluid.

12. The fire tube boiler system of claim 7 , wherein the vessel further includes a plurality of second exhaust ducts that connects the peripheral tube to the second exhaust line to evacuate the exhaust gases produced by the oxy-combustion and further transfer heat from the exhaust gases to the working fluid.

13. A fire tube boiler system comprising:
a vessel that contains a working fluid;
a plurality of oxygen transport reactors that is positioned inside the vessel and that heats the working fluid;
a first supply line that provides air to the plurality of oxygen transport reactors, the first supply line having supplementary ion transport membranes;
a second supply line that provides a mixture of fuel and carbon dioxide to the plurality of oxygen transport reactors;
a third supply line that provides a supplementary mixture of fuel and air to the plurality of oxygen transport reactors;
a first exhaust line that evacuates oxygen depleted air from the plurality of oxygen transport reactors;
a second exhaust line that evacuates exhaust gases from the plurality of oxygen transport reactors,
wherein
each oxygen transport reactor of the plurality of oxygen transport reactors includes:
a first inner tube having:
an upstream end that connects the first supply line to receive the air,
a downstream end that connects the first exhaust line to evacuate the oxygen depleted air, and
an ion transport membrane that connects the upstream end with the downstream end to extract oxygen from the air and form the oxygen air depleted;

a second inner tube that surrounds the first inner tube to receive the oxygen from the ion transport membrane and that connects the second supply line to receive the mixture of fuel and carbon dioxide to react with the oxygen in a oxy-combustion,
a third inner tube that connects the third supply line to receive oxygen and provide a supplementary oxy-combustion and that surrounds the second inner tube to provide heat to the ion transport membrane, and
a peripheral tube that surrounds the third inner tube and connects the second exhaust line through an up

Assignees

• Univ King Fahd Pet & Minerals

Inventors

• Habib Mohamed Abdel-Aziz
• Ben-Mansour Rached

Classifications

• F23L15/04

  Arrangements of recuperators · CPC title

• F23D14/32

  using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D14/38 takes precedence) · CPC title

• F22B9/12 Primary

  the fire tubes being in substantially-horizontal arrangement · CPC title

• F22B11/04

  the fire tubes being in horizontal arrangement · CPC title

• F23L7/007

  Supplying oxygen or oxygen-enriched air · CPC title