Use of top gas in direct reduction processes

Use of top gas in direct reduction processes

  • CN 105,492,376 A
  • Filed: 07/22/2014
  • Published: 04/13/2016
  • Est. Priority Date: 07/22/2013
  • Status: Active Application
First Claim
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1. an iron oxide reduction system, it comprises:

  • A (), for the first module by direct-reduction technique reducing iron oxides, described first module comprises the outlet of the first reducing gas entrance, the first reduction reactor and top gas;

    Wherein said first module produces metallic iron during operation and discharges furnace roof air-flow via described top gas outlet;

    AndB () is for the second module by direct-reduction technique reducing iron oxides, described second module comprises the second reducing gas entrance, the second reduction reactor, reducing gas well heater and steam boiler, and wherein said second module produces metallic iron during operation;

    Wherein said second module comprises process gas heating unit;

    AndWherein said second module is configured to receive the heat-dissipating gas of described furnace roof air-flow as the hot equipment of described second module from described first module.

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