Method and device for reforming produced gas
AssigneeIHI Corporation
InventorToru Ishii
Life of this patent
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Abstract
Provided is a method of reforming a produced gas to reform tar contained in the produced gas from a gasification furnace. Quick lime comes in contact with a produced gas (3) from a gasification furnace (2) in a reformer (1) such that the quick lime absorbs carbon dioxide in the produced gas to generate calcium carbonate, and reforming reaction of the tar is performed with calcium as a catalyst using heat of reaction emitted during that time. In addition, as the calcium carbonate of the reformer (1) is supplied and burnt in a reforming agent regenerator (8), the quick lime is regenerated and supplied into the reformer (1) again. According to the above configuration, it is possible to provide a method and device for reforming a produced gas that are capable of simplifying equipment and operation thereof.
Claims15
A method of reforming a produced gas configured to reform tar contained in the produced gas from a gasification furnace, the method comprising:
- generating calcium carbonate in a reformer by bringing the produced gas from the gasification furnace in contact with quick lime so that the quick lime absorbs carbon dioxide in the produced gas, performing a reforming reaction of the tar with calcium as a catalyst using reaction heat generated when the calcium carbonate is generated,
- supplying the calcium carbonate in the reformer, auxiliary fuel, and air into a reforming agent regenerator to form a fluidized bed, returning the calcium carbonate to the quick lime by burning the calcium carbonate using heat by combustion of the auxiliary fuel, and supplying the quick lime into the reformer, and wherein steam is reacted with a part of the quick lime burnt by the reforming agent regenerator to obtain slaked lime having high activity, and the slaked lime is supplied into the reformer together with the quick lime burnt by the reforming agent regenerator.
A device for reforming a produced gas configured to reform tar contained in the produced gas from a gasification furnace, the device comprising:
- a reformer configured to generate calcium carbonate by introducing the produced gas from the gasification furnace into the reformer and bringing the produced gas in contact with quick lime so that the quick lime absorbs carbon dioxide in the produced gas, and perform a reforming reaction of the tar with calcium as a catalyst using reaction heat generated when the calcium carbonate is generated;
- and a reforming agent regenerator configured to introduce the calcium carbonate in the reformer, auxiliary fuel, and air to form a fluidized bed, return the calcium carbonate to the quick lime by burning the calcium carbonate using heat by combustion of the auxiliary fuel, and supply the quick lime into the reformer again, and wherein steam is reacted with a part of the quick lime burnt by the reforming agent regenerator to obtain slaked lime having high activity, and the slaked lime is supplied into the reformer together with the quick lime burnt by the reforming agent regenerator.
Dependencies are inferred from the claim text.