Gasified gas production system

Patent metadata

Field	Value
Publication number	US-9738841-B2
Application number	US-201514828655-A
Country	US
Kind code	B2
Filing date	Aug 18, 2015
Priority date	Apr 15, 2013
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A gasified gas production system of the present disclosure includes a gasification furnace which produces a gasified gas by gasifying a gasification raw material, a flow passage through which the gasified gas produced in the gasification furnace flows, a catalyst-holding unit which holds a catalyst which promotes reforming of tar included in the gasified gas inside the flow passage, and an oxidation agent supply unit which supplies an oxidation agent with a temperature of 200° C. to 900° C. to the catalyst.

First claim

The invention claimed is:

1. A gasified gas production system comprising:
a gasification furnace which produces a gasified gas by gasifying a gasification raw material;
a flow passage through which the gasified gas produced by the gasification furnace flows;
a catalyst-holding unit which holds a catalyst inside the flow passage and promotes reforming of tar included in the gasified gas by the catalyst inside the flow passage;
an oxidation agent supply unit which supplies an oxidation agent with a temperature of 200° C. to 900° C. to the catalyst,
a combustion furnace which heats a fluid medium with heat generated by combusting a fuel,
wherein the fluid medium heated by the combustion furnace is introduced into the gasification furnace, and the gasification furnace gasifies the gasification raw material with heat of the fluid medium, and
wherein the oxidation agent supply unit supplies a combustion exhaust gas with a temperature of 200° C. to 900° C. generated by combusting the fuel in the combustion furnace to the flow passage that connects the gasification furnace and the catalyst-holding unit as the oxidation agent.

2. The gasified gas production system according to claim 1 , further comprising:
a temperature-measuring unit which measures a temperature of the catalyst; and
an oxidation agent control unit which controls an amount of the oxidation agent supplied by the oxidation agent supply unit according to the measured temperature of the catalyst.

3. The gasified gas production system according to claim 1 , wherein water vapor is introduced into the gasification furnace, and the gasification furnace gasifies the gasification raw material with the water vapor.

4. The gasified gas production system according to claim 2 , wherein water vapor is introduced into the gasification furnace, and the gasification furnace gasifies the gasification raw material with the water vapor.

5. A gasified gas production system comprising:
a gasification furnace which produces a gasified gas by gasifying a gasification raw material;
a flow passage through which the gasified gas produced by the gasification furnace flows;
a catalyst-holding unit which holds a catalyst inside the flow passage and promotes reforming of tar included in the gasified gas by the catalyst inside the flow passage;
an oxidation agent supply unit which supplies an oxidation agent with a temperature of 200° C. to 900° C. to the catalyst,
a combustion furnace which heats a fluid medium with heat generated by combusting a fuel,
the combustion furnace is operably connected to the gasification furnace and configured to introduce the heated fluid medium into the gasification furnace and gasify the gasification raw material with heat of the fluid medium, and
the oxidation agent supply unit is operably connected to the combustion furnace and configured to supply a combustion exhaust gas with a temperature of 200° C. to 900° C. generated by combusting the fuel in the combustion furnace to the flow passage that connects the gasification furnace and the catalyst-holding unit as the oxidation agent.

Assignees

• Ihi Corp

Inventors

• Ohara Hiroaki

Classifications

• C10J2300/0993

  Inert particles, e.g. as heat exchange medium in a fluidized or moving bed, heat carriers, sand · CPC title

• C10J2300/1807

  Recycle loops, e.g. gas, solids, heating medium, water · CPC title

• C10J3/463

  in stationary fluidised beds · CPC title

• C10J2300/0916

  Biomass · CPC title

• C10J2300/093

  Coal · CPC title