Catalyst regenerator

Patent metadata

Field	Value
Publication number	US-11279885-B2
Application number	US-201917054345-A
Country	US
Kind code	B2
Filing date	May 10, 2019
Priority date	May 10, 2018
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A catalyst regenerator according to an embodiment of the present invention, as a catalyst regenerator that regenerates a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor, includes: a reaction chamber that includes a regeneration space, receives the coked catalyst from a standpipe connected to the regeneration space, and discharges a regenerated catalyst to an outlet; a fuel supplier that is connected to the reaction chamber to inject a fuel for combustion into the regeneration space; and a fuel supplier that is connected to the reaction chamber to inject an air for combustion into the regeneration space, wherein the fuel injected from the fuel supplier is a reformed fuel containing hydrogen and carbon monoxide.

First claim

The invention claimed is:

1. A catalyst regenerator for regenerating a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor, comprising:
a reaction chamber including a regeneration space, the reaction chamber configured to receive the coked catalyst from a standpipe connected to the regeneration space, and discharge a regenerated catalyst to an outlet;
a fuel supplier connected to the reaction chamber to inject a fuel for combustion into the regeneration space; and
an air supplier connected to the reaction chamber to inject air for combustion into the regeneration space,
wherein
the fuel injected from the fuel supplier is a reformed fuel containing hydrogen and carbon monoxide, and
the fuel supplier further includes an auto-thermal reforming reactor that is provided with a reforming container in which a reforming catalyst is embedded, and receives a separated gaseous fuel separated from a product of the endothermic catalytic reaction to auto-thermally reforming-react it in the reforming catalyst.

2. The catalyst regenerator of claim 1 , wherein
the air supplier includes an air distribution ring supplied with the air and an air nozzle formed in the air distribution ring, and
the fuel supplier includes a fuel distribution ring supplied with the fuel and disposed to be adjacent to the air distribution ring and a fuel injection port formed in the fuel distribution ring.

3. The catalyst regenerator of claim 2 , wherein
the outlet is installed at a predetermined height from a bottom of the reaction chamber, and
the regeneration space includes a catalyst dense zone set at a lower height than the outlet and a catalyst lean zone set at an upper side of the outlet.

4. The catalyst regenerator of claim 1 , wherein
the auto-thermal reforming reactor further receives air and water.

5. The catalyst regenerator of claim 1 , wherein
the auto-thermal reforming reactor further receives external gaseous fuel from the outside.

6. The catalyst regenerator of claim 1 , wherein
the auto-thermal reforming reactor includes a pilot burner or igniter in the reforming container.

7. The catalyst regenerator of claim 1 , wherein
in the auto-thermal reforming reactor,
an external combustor supplying a hot combustion product gas is connected to the reforming container.

8. The catalyst regenerator of claim 4 , wherein
the auto-thermal reforming reactor includes
a first mixer provided in the reforming container to mix the separated gaseous fuel and the air,
a water supplier provided at a downstream side of the first mixer to spray water supplied to the reforming container, and
a second mixer provided between the reforming catalyst embedded in the reforming container and the water supplier to mix the separated gaseous fuel with the air and the water.

9. The catalyst regenerator of claim 4 , wherein
the auto-thermal reforming reactor includes
a mixer provided in the reforming container to mix the separated gaseous fuel and the air, and
a water supplier provided between the reforming catalyst embedded in the reforming container and the mixer to spray water supplied to the reforming container.

10. The catalyst regenerator of claim 9 , wherein
the water supplier includes a heat exchanger exchanging heat inside the reforming container.

11. The catalyst regenerator of claim 1 , wherein
the auto-thermal reforming reactor is installed in the regeneration space.

12. The catalyst regenerator of claim 3 , wherein
the reaction chamber includes a perforated plate at the upper side of the fuel distribution ring, and
the perforated plate is provided as a single layer or a multilayer in the catalyst dense zone.

13. A catalyst regenerator for regenerating a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor, comprising:
a reaction chamber including a regeneration space, the reaction chamber configured to receive the coked catalyst from a standpipe connected to the regeneration space, and discharge a regenerated catalyst to an outlet;
a fuel supplier connected to the reaction chamber to inject a fuel for combustion into the regeneration space; and
an air supplier connected to the reaction chamber to inject air for combustion into the regeneration space,
wherein
the fuel injected from the fuel supplier is a reformed fuel containing hydrogen and carbon monoxide,
the fuel supplier includes a liquid fuel reformer that is connected to the reaction chamber to generate a reformed gas including hydrogen, carbon monoxide, and solid carbon by partial oxidation of liquid fuel and supply it to the regeneration space, and
the liquid fuel reformer includes
a housing connected to the reaction chamber,
a lean combustion zone in which a first hot gas flow is formed with a first liquid fuel and first air supplied from one side of the housing, and
a rich combustion zone in which a second hot gas flow is formed with a second liquid fuel supplied through a fuel supply pipe installed inside the lean combustion zone.

14. The catalyst regenerator of claim 13 , further comprising
an inner pipe installed through a spacer interposed inside the housing, in the rich combustion zone.

15. The catalyst regenerator of claim 14 , wherein
a first hot gas flow passage that allows the first hot gas to flow is formed between an outer surface of the inner pipe and an inner surface of the housing, and
an inner surface of the inner pipe forms a second hot gas flow passage that allows the second hot gas to flow.

16. The catalyst regenerator of claim 13 , further comprising
an outer pipe installed outside the housing.

17. The catalyst regenerator of claim 16 , wherein
a second air flow passage that allows second air to flow is formed between an outer surface of the housing and an inner surface of the outer pipe.

18. The catalyst regenerator of claim 13 , wherein
the housing includes an extension that is more largely extended in the lean combustion zone than in the rich combustion zone, and
a plasma ignition/combustion part that is installed in the extension to generate plasma by a first liquid fuel and first air, and ignites/combusts.

19. The catalyst regenerator of claim 13 , wherein
the housing includes a high temperature exposure increasing member installed in the rich combustion zone to increase a high temperature exposure time.

20. The catalyst regenerator of claim 19 , wherein
the high temperature exposure increasing member includes at least one of a metal foam, a metal mesh, and a ceramic monolith.

21. The catalyst regenerator of claim 13 , wherein
the housing includes a heating member installed on an outer surface thereof to increase an internal temperature.

22. The catalyst regenerator of claim 13 , wherein
a plurality of the liquid fuel reformers are disposed in a lower side of the reaction chamber.

23. A catalyst regenerator for regenerating a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor, comprising:
a reaction chamber including a regeneration space, the reaction chamber configured to receive the coked catalyst from a standpipe connected to the regeneration space, and discharge a regenerated catalyst to an outlet;
a fuel supplier connected to the reaction chamber to inject a fuel for combustion into the regeneration space; and
an air supplier connected to the r

Assignees

• Korea Inst Mach & Materials
• Korea Res Inst Chemical Tech

Inventors

• Jo Sungkwon
• Choi Seongil
• Cho Donghyun
• Lee Dae-Hoon
• Kim Kwan-Tae
• Song Younghoon
• Park Yong-Ki
• Kang Na Young

Classifications

• B01J38/30

  in gaseous suspension, e.g. fluidised bed · CPC title

• B01J2208/00884

  Means for supporting the bed of particles, e.g. grids, bars, perforated plates · CPC title

• F23N1/02

  conjointly with air supply · CPC title

• C10G2300/4081

  Recycling aspects · CPC title

• F23C10/01

  in a fluidised bed of catalytic particles · CPC title