A method for manufacturing Direct Reduced Iron wherein iron ore is reduced in a DRI shaft by a reducing gas including hydrogen obtained by extraction from coke oven gas through a hydrogen separation unit, the remaining part of such coke oven gas being at least partly injected in the transition section of said DRI shaft to set the carbon amount of said Direct Reduced Iron from 0.5 to 3 wt. % and a DRI manufacturing equipment including a DRI shaft (1) and a hydrogen separation unit (5), wherein said hydrogen separation unit (5) inlet is connected to a coke oven gas supply (6) and includes a first outlet connected to the DRI shaft to inject hydrogen separated from said coke oven gas and a second outlet connected to the transition section of said DRI shaft (1) to inject at least part of the remaining part of such coke oven gas.

A method for manufacturing Direct Reduced Iron wherein iron ore is reduced in a DRI shaft by a reducing gas including hydrogen obtained by thermal cracking of methane inside a plasma torch, the reducing gas further including top gas coming from the DRI shaft and a DRI manufacturing equipment including a DRI shaft (1) and a plasma torch (40), wherein the plasma torch is connected on one side to a methane supply (41) and, on the other side, to the DRI shaft (1), the DRI shaft being provided with a recycling loop allowing to inject its top gas back in the DRI shaft.

A method for manufacturing direct reduced iron wherein oxidized iron is reduced in a direct reduction furnace by a reducing gas, the oxidized iron being first mixed with biochar to form a solid compound and the solid compound is charged into the direct reduction furnace.

A method for manufacturing direct reduced iron wherein iron ore is reduced in a direct reduction furnace by a reducing gas, the reducing gas exiting the furnace through the top as a top reduction gas. The top reduction gas is captured and at least partly subjected to a CO2 recovery step during which it is divided into two streams, a CO2-rich stream and a CO2-poor stream. The CO2-rich stream is subjected to an alkanol production step to produce an alkanol product.

A process and plant for conversion of a feed hydrocarbon stream to liquid hydrocarbon products in a small scale GTL plant, comprising the use of a cryogenic air separation unit (ASU), optionally together with vacuum pressure swing adsorption (VPSA), an autothermal reformer (ATR) or catalytic partial oxidation (CPO), and pressure swing adsorption (PSA) unit to produce a synthesis gas for downstream Fischer-Tropsch (FT) synthesis for production of liquid hydrocarbons.

The present invention provides a novel method for supplying a reducing gas to the shaft part of a blast furnace with which a large amount of reducing gas containing hydrogen at a high concentration can be supplied to a deeper position in the blast furnace (location of the blast furnace closer to the center axis in the radial direction) and with which it is possible to reduce the total generated amount of CO.sub.2 of the CO.sub.2 amount that is reduced by conducting hydrogen smelting in the blast furnace and the CO.sub.2 amount that is generated during production of the reducing gas supplied to the blast furnace. The method for supplying a reducing gas to the shaft part of a blast furnace according to the present invention is characterized by reforming coke oven gas by increasing the temperature thereof to 1200 to 1800? C. in a reactor in which an oxygen-containing gas is supplied to preheated coke oven gas to generate reformed gas in which hydrogen gas is enriched; mixing the reformed gas with CO-containing gas in the reactor so that the hydrogen concentration of the reducing gas is adjusted to 15-35 vol % (wet); and supplying the resultant reducing gas to the shaft part of the blast furnace under a condition of a ratio of a flow rate of reducing gas blown into shaft part/flow rate of reducing gas blown into tuyere >0.42.

A system for the production of sponge iron, the system including a direct reduction shaft including a first inlet for introduction of iron ore into the shaft, a first outlet for removing sponge iron from the shaft, a reduction gas source, connected through a gas line with the shaft, a first compressor in said gas line, and a primary circuit for conducting at least a part of the top gas therethrough. The primary circuit is connected in one end with shaft and in another end with said gas line downstream said first compressor. The system also includes a secondary circuit for conducting at least a portion of gas removed from gas conducted through the primary circuit, said secondary circuit being connected in one end to the primary circuit and in another end to said gas line upstream said first compressor. The system further includes means therein for reducing the pressure of said portion of gas conducted through the secondary circuit, and a first valve for controlling a flow of said portion of gas into the secondary circuit.

A method of direct reduction of iron (DRI) is disclosed, the method comprising generating metallic iron by removing oxygen from iron ore using a reducing gaseous mixture with excess carbon monoxide that produces an excess CO.sub.2 by-product is provided. CO.sub.2 by-product is optionally sequestered. A system for carrying out the method is also disclosed.

A method for manufacturing direct reduced iron wherein oxidized iron is reduced in a direct reduction furnace by a reducing gas, the direct reduction furnace including a reduction zone, a transition zone and a cooling zone, a carbon-bearing liquid being injected below the reduction zone.

A method of operating a network of plants comprising a blast furnace, a direct reduction furnace, a CO2 conversion unit wherein blast furnace top gas is subjected to a CO2 conversion step to produce a liquid carbon product which is injected into the direct reduction furnace.