Direct reduction shaft furnace with probe for measuring interior gas analysis
AssigneeArcelorMittal
InventorsMahdi Farahani, Justin Farley, George Tsvik, Gabriel Jesus Lucena Mogollon
Life of this patent
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Abstract
A direct reduction shaft furnace having at least one probe disposed vertically within the reduction zone thereof. The probe preferably extends from the top to the bottom of the reduction zone. The probe allows for gas sampling along the length thereof and transmittal of the gas to at least one type of gas analysis device. The probe may also allow for the measurement of the temperature and pressure of the gas sample as it is taken.
Claims12
An apparatus for the direct reduction of metal ore, the apparatus comprising:
- a vertical shaft furnace for the direct reduction of metal ore, the vertical shaft furnace having a metal ore reduction zone in an upper region of the vertical shaft furnace and a cooling zone in a lower region of the vertical shaft furnace;
- at least one probe for sampling gas from within the reduction zone of said vertical shaft furnace;
- the at least one probe being disposed vertically within the reduction zone and extending through the entire reduction zone;
- the probe comprising a plurality of sampling pipes, each sampling pipe having an upper portion and an end portion, the sampling pipes being disposed within at least one support pipe;
- wherein the plurality of sampling pipes are concentrically nested, wherein a first sampling pipe of the plurality of sampling pipes has a first length and each subsequent one of the plurality of sampling pipes being concentrically nested within a previous one of the sampling pipes and being longer than the previous sampling pipe so as to have an end portion protruding from the previous sampling pipe.
An apparatus for the direct reduction of metal ore, the apparatus comprising:
- a vertical shaft furnace for the direct reduction of metal ore, the vertical shaft furnace having a metal ore reduction zone in an upper region of the vertical shaft furnace and a cooling zone in a lower region of the vertical shaft furnace;
- at least one probe for sampling gas from within the reduction zone of said vertical shaft furnace;
- the at least one probe being disposed vertically within the reduction zone and extending through the entire reduction zone;
- the probe comprising a plurality of sampling pipes, each sampling pipe having an upper portion and an end portion, the sampling pipes being disposed within at least one support pipe;
- wherein:
- a first of the sampling pipes is concentrically nested within the support pipe, the first sampling pipe being longer than and having an end portion protruding from the support pipe;
- each subsequent one of the sampling pipes being concentrically nested within a previous of the sampling pipes and being longer than the previous sampling pipe so as to have an end portion protruding from the previous sampling pipe.
Dependencies are inferred from the claim text.