Oxygen Injection For Reformer Feed Gas For Direct Reduction Process
AssigneeMidrex Technologies, Inc.
InventorHaruyasu MICHISHITA
Life of this patent
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Abstract
A direct reduction plant is disclosed. The direct reduction plant includes an oxygen injection system, a reformer, and a shaft furnace. The oxygen injection system includes an oxygen injection reactor and a main oxygen burner. The oxygen injection reactor is adapted to receive a gas mixture. The main oxygen burner is adapted to increase a temperature of the gas mixture by burning a mixture of fuel and oxygen fed to the main oxygen burner. The reformer is adapted to reform the gas mixture with the increased temperature. The shaft furnace is adapted to reduce iron ore using the reformed gas mixture.
Claims20
A direct reduction plant, comprising:
- a reformer adapted to reform a gas mixture with an increased temperature;
- an oxygen injection system adapted to increase a temperature of the gas mixture by burning the gas mixture with oxygen and adapted to discharge the gas mixture with the increased temperature to the reformer;
- and
- a shaft furnace adapted to reduce iron ore using the reformed gas mixture.
A method for a direct reduction process for direct reduced iron, comprising:
- feeding a gas mixture into an oxygen injection system;
- increasing a temperature of the gas mixture in the oxygen injection system by burning a mixture of fuel and oxygen;
- reforming the gas mixture with the increased temperature in a reformer;
- and
- reducing iron ore using the reformed gas mixture.
A direct reduction plant, comprising:
- a heat exchanger adapted to pre-heat a gas mixture;
- a reformer downstream of the heat exchanger, the reformer adapted to reform the gas mixture in preparation for an iron ore reduction process;
- and
- an oxygen injection system positioned between the heat exchanger and the reformer, the oxygen injection system adapted to receive the gas mixture pre-heated by the heat exchanger and increase a temperature of the gas mixture by burning the gas mixture with oxygen and to discharge the gas mixture with the increased temperature to the reformer.
Dependencies are inferred from the claim text.