flow diagram of dri by reducing gas from coal


  • sponge iron process

    Jul 29, 2010· Other important characteristics which can not be over looked are the reactivity and ash softening temperature of the coal under reducing conditions, preferably 12500C and above. ... condition and minimum back flow. The feed rate of coal is a function feed rate of iron ore with fixed carbon/ iron ratio 0.45 to 0.50.The proportion of ...


  • The Production of Gas from Coal and the Manufacture of By ...

    The diagram shows the whole gas making process from the mining of the coal to the distribution of the gas to consumers. Efforts have been made to comment on the various uses of the by-products products and to include plant not available in 1945.


  • Lurgi's Methanation Technology for Production of SNG from …

    for DRI FEEDS SYNGAS GENERATION PRODUCTS CO shift Sulfur Removal (Rectisol Stage1) AL Capabilities ... USA is short on natural gas and very long on coal Gasification technology can augment North American natural gas supplies and ... Block Flow Diagram for Saturated Steam Production Feed Preheater Reactor 1 B1 BFW1 Reactor 2 B2 BFW2 BFW3 Reactor 3


  • MIDREX Processes -

    process was built in Qatar for producing direct reduced iron, Kobe Steel and MIDREX Technologies, Inc., have ... point higher than that of DRI. This has raised the reducing gas temperature to about 900℃ and improved shaft furnace productivity by more than ... Fig. 4 Oxygen injection flow Oxygen Hot reducing gas


  • igcc config | netl.doe.gov

    Typical IGCC Configuration. Major Commercial Examples of IGCC Plants While there are many coal gasification plants in the world producing electricity, fuels, chemicals and/or steam, the following are seven notable, commercial-size IGCC plants for producing electricity from coal and/or coke.


  • Process Flow Diagram Sponge Iron Plant - hiaimpolymers.in

    Chapter 11, Direct Reduction and Smelting Processes. May 23, 2012 Direct Reduction Processes—Reducing Gas. Generated Externally from Today sponge iron is referred to as direct reduced iron (DRI).


  • From coal to clean energy - netl.doe.gov

    Figure 1 shows a block diagram with major units of the SNG plant. Gasification, at least from coal, is not ... acid gas removal coal, petcoke or biomass Fig 1: Block diagram with major units of the SNG plant. ... can be obtained by either reducing the inlet temperature or increasing the outlet tem-perature, or by applying both. ...


  • 12.2 Coke Production - US EPA

    Flow diagrams are provided in Figures 12.2-2 and -3 to give an overview of the process ... Flow diagram for byproduct coke production. (Source Classification Code in parentheses.) ... provides a clear vapor space and exit tunnel for the gases that evolve during coking to flow to the gas collection system. After the oven is charged with coal ...


  • Coal Base DRI Operation

    Sponge iron produced either by coal or gas based route posses poor thermal conductivity as a result, heat generated by exothermic re-oxidation reaction within the pile cannot be dissipated away and lead to temperature build-up in DRI, and thus, leads to accelerates the corrosion.


  • Fischer–Tropsch process - Wikipedia

    As a premier example of C1 chemistry, Fischer–Tropsch process is an important reaction in both coal liquefaction and gas to liquids technology for producing liquid hydrocarbons. In the usual implementation, carbon monoxide and hydrogen, the feedstocks for F-T, are produced from coal, natural gas, or biomass in a process known as gasification .


  • process flow diagram of coal based power plant - Grinding ...

    The plant cleans and processes coal to remove dirt, rock, ash, sulfur, increasing the heating value of the coal. During this coal processing, the used industrial equipment can be called coal …


  • Prospects for Coal-based Direct Reduction Process

    an increased demand for direct reduced iron (hereinafter referred to as "DRI") as an alternative to ... plant locations to places where natural gas is available. On the other hand, coal-based DRI plants are flexible as to plant location, because coal is widely ... Fig. 3 shows the FASTMET process flow. The process includes mixing ore fines with ...


  • Energy Audit Methodology of Sponge Iron Manufacturing ...

    Most of the plants in India use DRI process—a solid state direct reduction process by which iron ore is reduced ... Process flow diagram of the plant under discussion . A. Choudhury 43 ... • So how to bifurcate the amount of coal as reducing agent vis-a-vis as fuel?


  • coal based lurgi dri process flow chart - Cutting Head

    The process flow diagram (PFD) of a conventional coal based sponge iron plant is shown in Fig. 1. Different streams in the PFD are assigned ... by the Steel Company of Canada, Lurgi Chemie, Republic Steel Company and National Lead Corporation in 1964), which works on direct reduction of ore.


  • ENERGY INTEGRATION IN SPONGE IRON PLANT USING …

    Direct-reduced iron (DRI), also called sponge iron, is produced from direct reduction of iron ore (in the form of lumps, pellets or fines) by a reducing gas produced from natural gas or coal. Unlike the conventional process, the process does not require coking coal; the coke ovens in a


  • Coal-Based HYL Process | Industrial Efficiency Technology ...

    Coal-based HYL reactor principle of operation is same as gas based HYL process. Oxide material is fed from top and is reduced by a counter current flow of H2 and CO containing gas. Similar to gas based HYL process, furnace top gas is cooled and cleaned and its CO2 is removed and then recycled into reducing gas circuit. Reducing gas is produced in a coal gasifier that can process practically ...


  • Direct reduced iron - Wikipedia

    Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coal. Many ores are suitable for direct reduction.


  • Alternative emerging ironmaking technologies for energy ...

    The COREX process is a two-stage direct smelting process, consisting of: (1) a melter-gasifier, which melts the DRI and gasifies the coal; and (2) a DRI shaft furnace mounted above melter-gasifier, which reduces lump ore or pellets to DRI by reducing gas from the melter-gasifier.


  • Direct Reduced Iron and its Production Processes ...

    Major DRI production processes are either gas based or coal based. Feed material in a DRI process is either iron ore sized to 10 to 30mm or iron ore pellets produced in an iron ore pellet plant. In the gas based plant the reactor, the reduction reaction takes place is a …


  • Cost Effectiveness Analysis of HYL and Midrex DRI ...

    Cost Effectiveness Analysis of HYL and Midrex DRI Technologies for the Iron and Steel-Making ... blast furnace (Valia, 2015). It is used to reduce iron ore to iron. High quality coal is heated in an oxygen-free atmosphere to carbonize the coal resulting in coke. ... through gravity flow, the gas rises through the material column and removes ...


  • Direct reduction : a review of commercial processes

    A wide variety of reducing agents are candidates for use in the direct reduction process; e.g., coal, coke, charcoal, reformed natural gas, products of coal gasification, oil, coke oven gas, and coke breeze.


  • Use of Coke Oven Gas in DRI Plant - …

    Coal . 1260 TPD – 1 Plant 260 TPD- 1 plant 100 TPD – 1 Plant Oxygen Plants 3.5 Caster. 5 5 ... Objective 1 To reduce the consumption of Natural gas to reduce cost of DRI Production. ... DRI Plant Process Flow Diagram. Pellet. Lump. Hot COG. 20,000 NM3/Hr. DRI. 18 COG pre heater System. COG Screw Compressor.


  • Biomass reducing agent utilisation in rotary hearth ...

    Flow diagram of experiments. Display full size. 2. ... Biomass reducing agent utilisation in rotary hearth furnace process for DRI production. All authors. H. Han, D. Duan, P. Yuan & D. Li. ... but biomass can replace traditional coal reducing agents used in the RHF direct reduction process under certain restrictions. 2. The fixed carbon ...


  • The MIDREX Process - The world's most reliable and ...

    THE HEART OF THE MIDREX® PROCESS IS THE MIDREX® SHAFT FURNACE. AS A KEY COMPONENT OF THE MIDREX® DIRECT REDUCTION PROCESS, THE MIDREX SHAFT FURNACE IS THE MOST FLEXIBLE AND VERSATILE REDUCTION VESSEL FOR DRI PRODUCERS. The MIDREX® Shaft Furnace can use natural gas or a syngas from coal or coke oven gas …


  • Power Generation from Coal - International Energy Agency

    Foreword Coal plays an essential role in our global energy mix, particularly for power generation, but we need to use it efficiently and reduce its environmental footprint.


  • Power 101: Flue Gas Heat Recovery in Power Plants, Part I

    The efficiency of a coal-fired power plant also will have a strong effect on the cost of carbon capture; with higher efficiency, the flow rate of flue gas that needs to be treated will be lower ...


  • Technology Gas Based Direct Reduction Process

    flow of reducing gas to the furnace bustle. (3) Syngas based DRI Plant has a turndown ratio of 3:1 from rated capacity with no significant loss of efficiency in the process.


  • COAL GASIFICATION AND THE PHENOSOLVAN PROCESS.

    Figure 1 presents a simplified flow diagram of the process steps involved in the Western Gasification Company's project in New Mexico ... the coal gasification gas liquor will contain (on a water- free basis) : ... ated phenol recovery will reduce the gas liquor BOD5 about 84% and