Systems for converting fuel

• US 9,903,584 B2
• Filed: 05/11/2012
• Issued: 02/27/2018
• Est. Priority Date: 05/11/2011
• Status: Active Grant

• Current Assignee: Ohio State Innovation Foundation (Ohio State University)
• Original Assignee: Ohio State Innovation Foundation (Ohio State University)
• Inventors: Fan, Liang-Shih, Kim, Hyung R., Li, Fanxing, Zeng, Liang, Wang, Dawei, Wang, Fei
• Primary Examiner(s): Pereiro, Jorge
• Application Number:
  US14/116,636
• Publication Number:
  US 20140072917A1
• Time in Patent Office: 2,118 Days
• Field of Search: 431 7, 110245
• CPC Class Codes: B01J 2208/00061 of the reactants
• CPC Class Codes: B01J 2208/00513 using inert heat absorbing solids in the bed
• CPC Class Codes: B01J 2208/00557 controlling the residence time inside the reactor vessel
• CPC Class Codes: B01J 2208/0061 Controlling the level
• CPC Class Codes: B01J 2208/00654 by measures relating to the particulate material
• CPC Class Codes: B01J 2208/00778 Kinetic energy reducing devices in the flow channel
• CPC Class Codes: B01J 2208/0084 inside the bed, e.g. baffles
• CPC Class Codes: B01J 2208/00902 Nozzle-type feeding elements
• CPC Class Codes: B01J 2208/00938 Flow distribution elements
• CPC Class Codes: B01J 8/002 with a moving instrument
• CPC Class Codes: B01J 8/12 moved by gravity in a downward flow
• CPC Class Codes: B01J 8/125 with multiple sections one above the other separated by distribution aids, e.g. reaction and regeneration sections
• CPC Class Codes: B01J 8/1827 the fluidising gas being a reactant
• CPC Class Codes: B01J 8/32 with introduction into the fluidised bed of more than one kind of moving particles
• CPC Class Codes: B01J 8/388 externally, i.e. the particles leaving the vessel and subsequently re-entering it
• CPC Class Codes: C01B 3/22 by decomposition of gaseous or liquid organic compounds C01B3/0005 takes precedence ; coking liquid carbonaceous materials C10B55/00
• CPC Class Codes: C10J 2300/1807 Recycle loops, e.g. gas, solids, heating medium, water
• CPC Class Codes: C10J 3/06 Continuous processes
• CPC Class Codes: C10J 3/721 Multistage gasification, e.g. plural parallel or serial gasification stages
• CPC Class Codes: C10J 3/723 Controlling or regulating the gasification process
• CPC Class Codes: C10J 3/725 : Redox processes
• CPC Class Codes: F23C 10/005 : comprising two or more beds
• CPC Class Codes: F23C 10/04 : the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
• CPC Class Codes: F23C 10/20 : Inlets for fluidisation air, e.g. grids; Bottoms
• CPC Class Codes: F23C 10/32 : by controlling the rate of recirculation of particles separated from the flue gases

Abstract

A system for converting fuel may include a first moving bed reactor, a second reactor, and a non-mechanical valve. The first moving bed reactor may include at least one tapered section and multiple injection gas ports. The multiple injection gas ports may be configured to deliver a fuel to the first moving bed reactor. The first moving bed reactor may be configured to reduce an oxygen carrying material with a fuel by defining a countercurrent flowpath for the fuel relative to the oxygen carrying material. The second reactor may communicate with the first moving bed reactor and may be operable to receive an oxygen source. The second reactor may be configured to regenerate the reduced oxygen carrying material by oxidation.

Claims

1. A system for converting fuel comprising:

a first moving bed reactor comprising at least one tapered section and multiple injection gas ports in a tangential injection configuration, the multiple injection gas ports being configured to tangentially inject a fuel into the first moving bed reactor, wherein the first moving bed reactor is configured to reduce an oxygen carrying material with a fuel by defining a countercurrent flowpath for the fuel relative to the oxygen carrying material, wherein the first moving bed reactor has multiple tapered sections that are aligned in parallel, such that the first moving bed reactor has multiple outlet streams, and wherein the multiple tapered sections emanate from a bottom section of the first moving bed reactor;

a second reactor communicating with the first moving bed reactor operable to receive an oxygen source, wherein the second reactor is configured to regenerate the reduced oxygen carrying material by oxidation; and

a non-mechanical valve comprising a circuitous piping assembly disposed between the first moving bed reactor and the second reactor, and at least one gas opening configured to receive a gas stream, the gas stream being operable to reduce gas leakage between the first moving bed reactor and the second reactor.

2. The system for converting fuel of claim 1, wherein the second reactor is a countercurrent moving bed reactor.

3. The system for converting fuel of claim 1, wherein the circuitous piping assembly comprises at least one vertical standpipe.

4. The system for converting fuel of claim 1, wherein the injection gas ports are disposed annularly on at least one tapered section.

5. The system for converting fuel of claim 1, further comprising a solids flow adjustor coaxially disposed within the first moving bed reactor.

6. The system for converting fuel of claim 5, wherein the spacing between the solids flow adjustor and the walls of the first moving bed reactor defines a tangential flowpath for fuel entering the first moving bed reactor via the multiple fuel injection ports.

7. The system for converting fuel of claim 5, wherein the solid flow adjustor is funnel shaped.

8. The system for converting fuel of claim 1, wherein multiple injector ports define a cone shape.

9. The system for converting fuel of claim 1, wherein the multiple injection gas ports are disposed along the tapered section.

10. A system for converting fuel comprising:

a first moving bed reactor comprising at least one tapered section and multiple injection gas ports in a tangential configuration, the multiple injection gas ports being configured to tangentially inject a fuel into the first moving bed reactor, wherein the first moving bed reactor is configured to reduce an oxygen carrying material with a fuel by defining a countercurrent flowpath for the fuel relative to the oxygen carrying material;

a second reactor communicating with the first moving bed reactor operable to receive an oxygen source, wherein the second reactor is configured to regenerate the reduced oxygen carrying material by oxidation; and

a non-mechanical valve comprising a circuitous piping assembly disposed between the first moving bed reactor and the second reactor, and at least one gas opening configured to receive a gas stream, the gas stream being operable to reduce gas leakage between the first moving bed reactor and the second reactor,

wherein;

the second reactor is a countercurrent moving bed reactor;

the circuitous piping assembly comprises at least one vertical standpipe;

the injection gas ports are disposed annularly on at least one tapered section;

wherein the first moving bed reactor has multiple tapered sections that are aligned in parallel, such that the first moving bed reactor has multiple outlet streams; and

wherein the multiple tapered sections emanate from a bottom section of the first moving bed reactor.

11. The system of claim 10, wherein multiple injector ports define a cone shape and the multiple injection gas ports are disposed along the tapered section.

12. A system for converting fuel comprising:

a first moving bed reactor comprising at least one tapered section and multiple injection gas ports in a tangential injection configuration, the multiple injection gas ports being configured to tangentially inject a fuel into the first moving bed reactor, wherein the first moving bed reactor is configured to reduce an oxygen carrying material with a fuel by defining a countercurrent flowpath for the fuel relative to the oxygen carrying material, wherein the first moving bed reactor has multiple tapered sections that are aligned in parallel, such that the first moving bed reactor has multiple outlet streams, and wherein the multiple tapered sections emanate from a bottom section of the first moving bed reactor;

a second reactor communicating with the first moving bed reactor operable to receive an oxygen source, wherein the second reactor is configured to regenerate the reduced oxygen carrying material by oxidation; and

a non-mechanical valve comprising a circuitous piping assembly disposed between the first moving bed reactor and the second reactor, and at least one gas opening configured to receive a gas stream, the gas stream being operable to reduce gas leakage between the first moving bed reactor and the second reactor; and

a solids flow adjustor coaxially disposed within the first moving bed reactor, wherein the spacing between the solids flow adjustor and the walls of the first moving bed reactor defines a tangential flowpath for fuel entering the first moving bed reactor via the multiple fuel injection ports in the tangential injection configuration, and wherein the solid flow adjustor is funnel shaped.