EP3245465B1 - Système de réacteur à injecteur de lance immergée par le haut comprenant un dispositif de détection permettant de déterminer l'état opérationnel d'un bain fondu - Google Patents

Système de réacteur à injecteur de lance immergée par le haut comprenant un dispositif de détection permettant de déterminer l'état opérationnel d'un bain fondu Download PDF

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Publication number
EP3245465B1
EP3245465B1 EP15831159.7A EP15831159A EP3245465B1 EP 3245465 B1 EP3245465 B1 EP 3245465B1 EP 15831159 A EP15831159 A EP 15831159A EP 3245465 B1 EP3245465 B1 EP 3245465B1
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EP
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Prior art keywords
lance
molten bath
submerged
reactor system
sensing device
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EP15831159.7A
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German (de)
English (en)
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EP3245465A1 (fr
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Robert Walter Matusewicz
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Outotec Finland Oy
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Outotec Finland Oy
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Priority claimed from AU2014905265A external-priority patent/AU2014905265A0/en
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Priority to PL15831159T priority Critical patent/PL3245465T3/pl
Publication of EP3245465A1 publication Critical patent/EP3245465A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/34—Blowing through the bath
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/0028—Devices for monitoring the level of the melt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/4613—Refractory coated lances; Immersion lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F27D2099/0036—Heating elements or systems using burners immersed in the charge

Definitions

  • Molten bath smelting or other pyrometallurgical operations which require interaction between the bath and a source of oxygen-containing gas utlilize several different arrangements for the supply of the gas.
  • these operations involve direct injection into the molten matte/metal. This maybe by bottom blowing tuyeres as in a Bessemer type furnace or side blowing tuyeres as in a Peirce-Smith type converter.
  • the injection of gas may be by means of a lance to provide either top blowing or submerged injection. Examples of top blowing lance injection are the KALDO and BOP steel making plants in which pure oxygen is blown from above the bath to produce steel from molten iron.
  • top blowing lance injection is the Mitsubishi copper process, in which lances cause jets of oxygen-containing gas such as an oxygen-enriched air, to impinge on and penetrate the top surface of the bath, respectively to produce and to convert copper matte.
  • oxygen-containing gas such as an oxygen-enriched air
  • submerged lance injection the lower end of the lance is submerged so that injection occurs within rather than from above the slag layer of the bath, to provide top submerged lancing (TSL) injection.
  • TSL top submerged lancing
  • the top blowing in the Mitsubishi copper process uses a number of relatively small steel lances which have an inner pipe of about 50 mm diameter and an outer pipe of about 100 mm diameter.
  • the inner pipe terminates at about the level of the furnace roof, well above the reaction zone.
  • the outer pipe which is rotatable to prevent it sticking to a water-cooled collar at the furnace roof, extends down into the gas space of the furnace to position its lower end about 500-800 mm above the upper surface of the molten bath. Particulate feed entrained in air is blown through the inner pipe, while oxygen enriched air is blown through the annulus between the pipes.
  • the outer pipe burns back by about 400 mm per day.
  • the outer pipe therefore is slowly lowered and, when required, new sections are attached to the top of the outer, consumable pipe.
  • TSL lances employed for TSL injection are much larger than those for top blowing, such as in the Mitsubishi process described above.
  • a TSL lance usually has at least an inner and an outer pipe, as assumed in the following, but may have at least one other pipe concentric with the inner and outer pipes.
  • Typical large scale TSL lances have an outer pipe diameter of 200 to 500 mm, or larger.
  • the lance is much longer and extends down through the roof of a TSL reactor, which may be about 10 to 15 m tall, so that the lower end of the outer pipe is immersed to a depth of about 300 mm or more in a molten slag phase of the bath, but is protected by a coating of solidified slag formed and maintained on the outer surface of the outer pipe by the cooling action of the injected gas flow within.
  • the inner pipe may terminate at about the same level as the outer pipe, or at a higher level of up to about 1000 mm above the lower end of the outer pipe. Thus, it can be the case that the lower end of only the outer pipe is submerged.
  • the inner pipe of a TSL lance may be used to supply feed materials, such as concentrate, fluxes and reductant to be injected into a slag layer of the bath, or it may be used for fuel.
  • An oxygen containing gas such as air or oxygen enriched air, is supplied through the annulus between the pipes.
  • This bath movement, together with injection of gases or other materials via the lance results in movement of the lance due to induced forces.
  • the range of motion to which a top submerged lance is subjected has the potential to provide important information regarding process operations occurring in the molten bath.
  • the lance is controlled by an operator who decides at what level the lance tip should be positioned and controls this by way of raising or lowering the lance relative to the bath by means of a lifting apparatus attached to the lance.
  • a lifting apparatus attached to the lance.
  • Such an arrangement may include a support or guide for the lance, called a lance trolley, the lance trolley being connected by a cable to a hoist whereby a motor control system allows positioning of the lance tip relative to the molten bath within the vessel.
  • a lance height indicator which may be controlled from a slide wire transmitter driven from the lance drum, is employed to provide an indication of the position of the lower end of the lance within the reactor.
  • Operators are instructed to make manual observations regarding lance movement and in time, learn to intuitively recognise which range of motion of the lance is indicative of optimal or sub-optimal conditions in the molten bath. For example, an operator can position the lance in the molten bath by monitoring the movement of the lance by eye. The extent of movement of the lance can be used by an operator with some experience, to approximate the depth to which the tip of the lance is submerged in the molten bath.
  • Publication WO 2011/106023 presents a system for furnace sloping prediction and lance optimization.
  • Publication WO 2014/167532 presents an apparatus for temperature measurements of a molten bath in a top submerged injection lance installation.
  • a top-submerged lancing injector reactor system including: a molten bath; a lance being moveable between a submerged and an unsubmerged position, the lance having a lower end and an upper end, the lower end configured to be lowered into the molten bath in the submerged position; and a sensing device mounted on the lance and being configured to sense one or more movements of or forces applied to the lance in the submerged position, wherein the sensed movements or forces are indicative of an operating condition in the molten bath.
  • suitable sensing devices include orientation sensors generally, and more specifically one or more of an accelerometer, a gyroscope and/or a magnetometer.
  • An accelerometer for instance, can be used to sense the orientation of the lance by detecting the magnitude and direction of movements of the lance, acceleration of the lance in various directions and/or the g-forces to which the lance is subject.
  • orientation sensors may be used alone or in combination to provide the requisite functionality to the sensing device.
  • an assessment of the operating conditions in the molten bath can be based on lance movement patterns. For example, lance movement is impacted by variable conditions including lance position within the reactor including lance proximity to the molten bath; slag levels, variations in slag viscosity, molten bath temperature and the like. Where a lance movement pattern indicates an undesirable operating condition, such that the lance is submerged too deep in the molten bath, or not submerged at all, or that the slag is too viscous, this determination may be used to make adjustments to the operating conditions within the reactor system with the ultimate aim of improving the efficiency of the operation.
  • the sensing device is mounted distal to the lower end of the lance. This configuration protects the sensing device from the conditions in the molten bath by positioning the sensing device as far away from the molten bath as practical, i.e. by mounting the sensing device towards the end of the lance that might be mounted on a lifting apparatus such as a lance trolley and hoist, rather than the lower end of the lance which will be submerged in the molten bath during operation.
  • the sensing device may be wirelessly coupled or hard wired to a receiver to which a plurality of sensed signals are transmitted.
  • the receiver may include processing means configured to analyse the sensed signals to determine at least the magnitude and direction of lance movement. Alternatively, part or all of the processing functionality may be included in a remotely located base station.
  • the processing means may generate output to visually indicate to an operator of the top-submerged lancing injector reactor system, the operating conditions in the molten bath as a function of the sensed signals.
  • the output is in the form of one or more graphical plots that provide a visual indicator of any displacement of the lance in at least two dimensions.
  • displacement of the lance is indicated in three dimensions, i.e. in the X, Y and Z planes.
  • the graphical plot may take the form of a movement map or could take the form of a bar chart or similar.
  • the visual indicator takes the form of a numerical or colour display which an operator recognises as indicating desirable, undesirable or neutral conditions in the bath, for example.
  • the lance is mounted on a lifting apparatus operable to position the lance between the submerged position and the unsubmerged position.
  • the lance is preferably mounted on the lifting apparatus at a point that is intermediate to the lower end of the lance and an upper end of the lance.
  • the sensing device is preferably mounted proximal to the upper end of the lance to protect the sensing device from exposure to the conditions in the molten bath.
  • Suitable sensing devices include orientation sensors generally, and more specifically one or more of an accelerometer, a gyroscope and/or a magnetometer.
  • the sensory device is an inertial measurement unit (IMU).
  • IMU inertial measurement unit
  • the top-submerged lancing injector reactor system may further include a receiver configured to receive a plurality of sensed signals transmitted by the sensing device.
  • the receiver may include processing means configured to analyse the sensed signals or alternatively, this functionality may be included in a remote device such as a base station.
  • the processing means may generate output to visually indicate the operating conditions of the molten bath as a function of the sensed signals.
  • the output generated by the processing means may comprise one or more graphical plots to provide a visual indicator of displacement of the lance in at least two dimensions. Preferably, displacement of the lance is plotted with respect to three dimensions.
  • a method for determining an operating condition in a molten bath of a top-submerged lancing injector reactor system including the following steps: providing a sensing device mounted on a lance; lowering at least a lower end of a lance into the molten bath towards a submerged position; generating one or more sensed signals in response to movements of and/or forces applied to the lance; and transmitting the sensed signals to a receiver; processing the sensed signals to determine at least the magnitude and direction of lance movement or a force applied thereto; wherein movement of or the force applied to the lance is indicative of an operating condition in the molten bath.
  • the receiver includes processing means which derives data regarding the operating condition of the molten bath as a function of the sensed signals.
  • the receiver is communicatively coupled to a base station having processing means which derives data regarding the operating conditions of the molten bath as a function of the sensed signals.
  • the step of sensing one or more movements of the lance preferably includes determining a displacement of the lance in the X, Y and Z axes.
  • the step of sensing one or more movements of or forces applied to the lance may include one or more of measuring an acceleration of the lance; measuring a rotational movement of the lance; and/or measuring vibration and/or strain.
  • FIG. 1 there is shown an exemplary top-submerged lancing injector reactor system 100.
  • the reactor 102 has a cylindrical shell 104 closed at its top end by an inclined roof 106 from which an off-take flue 108 projects upwardly to an off-gas boiler/heat exchanger 110.
  • a section of the shell 104 has been removed to enable the interior of the reactor 102 to be viewed, although the shell 104 is circumferentially continuous at all levels in its height, apart from tap holes.
  • the roof 106 has an inlet 112 down through which a top submerged injecting lance 114 extends so that a lower end portion of the lance 115 is submerged in the molten bath 116.
  • the reactor 102 also has a feed port 118 opening through roof 106 to enable raw materials for a required pyro-metallurgical operation to be charged into bath 116, and a burner port 120 for enabling insertion of a burner 122 if required for heating the reactor.
  • Lance 114 has connectors 124 that enable connection of lance 114 to separate sources of fuel/reductant and oxygen-containing gas, to enable the separate passage of these materials down through lance 114 and to mix at the lower, outlet end of lance to feed a combusting mixture.
  • the combustion of the fuel and oxygen mixture generates a combustion zone in the molten bath 116 at the lower, outlet end of lance 115, as well as strong turbulence in the molten bath 116 that causes the raw materials charged through port 118 to be dispersed in the molten bath to give rise to the required pyro-metallurgical reactions therein.
  • the lance 114 is a schematic illustration of the lower end of one exemplary form of top submerged injecting lance 114 to be fitted with the sensing device of the present invention.
  • the lance 114 comprises an outer pipe 202, an inner pipe 204 and, between pipes 202 and 204, an intermediate pipe 206.
  • the pipes 202, 204 and 206 are substantially circular in cross-section and substantially concentrically arranged.
  • An annular passage 208 defined between pipes 202 and 206 enables the supply of air, while a passage 210 defined between pipes 204 and 206 enables the supply of oxygen.
  • the bore 212 defined by pipe 204 enables the supply of fuel/reductant.
  • pipes 204 and 206 terminate a short distance, relative to the overall length of lance 114, above the lower end of pipe 202 to provide a mixing chamber 214 in which the fuel/reductant, air and oxygen mix to facilitate efficient combustion of the fuel at the lower end of pipe 202.
  • the lance 114 may have a length of up to about 25 meters and an outside diameter of up to about 0.5 meters for commercial operation.
  • a pilot plant version of lance 114 may be only about 4 meters long and about 0.075 meters external diameter.
  • FIG. 3 an exemplary form of the sensing device for determining the operating conditions in a molten bath is shown in combination with the lance of Figure 2 .
  • the sensing device 302 is shown enlarged relative to the diameter of lance 114.
  • the sensing device 302 is mounted on the lance 114 and senses movement of the lance and/or forces applied to the lance, such as an acceleration of g-force, in three dimensions, substantially in the horizontal plane (X axis 312 and Y axis 314), and substantially in the vertical plane (Z axis 316).
  • the sensing occurs continuously throughout operation of the lancing injector reactor system 100 (see Figure 1 ), although it is envisaged that sensing could be programmed to occur at predetermined intervals to provide a check or point of comparison for future sensed signals.
  • the movements sensed by the sensing device 302 are indicative of the operating condition in the molten bath 116 (see Figure 1 ) as will be detailed in the following paragraphs.
  • the sensing device 302 is mounted distal to the lower end 304 of the lance 114.
  • This configuration distances the sensing device 302 from exposure to the conditions in the molten bath 116 (see Figure 1 ). Any movement occurring at the lance tip 310, i.e. the extremity of the lower end of the lance 304, is substantially translated to the upper end of the lance 306. Accordingly, the sensing device 302 can be mounted distal to the lower end 304 of the lance 114 to be submerged in the molten bath, and still provide a useful indication as to the operating conditions in the molten bath.
  • the lance 114 is mounted on, or fixed to a lifting apparatus (not shown) at a point 308 on the lance which is intermediate to the lower end 304 and the upper end 306 of the lance. Since the positon of the lance 114 is only fixed at this intermediate point 308, any movement induced by forces acting on the lance tip 310 will be translated through the entire length of the lance. Whilst mounting the lance 114 on a lifting apparatus in itself provides a source of physical restraint which could be additionally provided by means of an separate physical constraint elsewhere connected to the lance 114, translation of a movement or force applied to the lance tip 310 will occur in any event due to the significant forces to which a top-submerged lance 114 is subject during operation.
  • the range of movements and/or forces that can be measured by the sensing device 302 include at least: displacement in up to three dimensions, i.e. the X, Y and Z planes; acceleration forces; rotational movement; and vibration or strain.
  • Measuring displacement of the lance in at least two dimensions, e.g. X and Y plane displacement is reliable indicator of displacement due to bath slopping.
  • Measuring displacement in a third dimension, e.g. Z plane movement caused by injection under a normal fluid slag is a further indicator of operating conditions.
  • sensing device which include one or more of a variety of independent sensors such as an orientation sensor, an accelerometer, a gyroscope or a magnetometer.
  • IMU Inertial Measurement Unit
  • the sensing device is coupled to a receiver configured to receive a plurality of sensed signals transmitted from the sensing device. If the receiver includes processing means, the sensed signals are analysed by the receiver to determine at least the magnitude and direction of lance movement. Alternatively, if the receiver does not include processing means, this functionality may be included at a remotely located base station. In any case, the processing means analyses the sensed signals and generates output to visually indicate the operating conditions of the molten bath.
  • the output is in a form which can be readily interpreted by a top-submerged lancing injection reactor operator. For example, the output can be provided in the form of one or more graphical plots which provide a visual indicator of the displacement of the lance in at least two dimensions. Examples of such graphical plots are described below with reference to Figures 4B , 5B , 6B and 7B .
  • the receiver may be wirelessly coupled to the base station via a wireless network such as Bluetooth, WiFi, Zig-Bee or wireless LAN, or wireless WAN such as 3G or 4G networks or other wireless networks which may be available from time to time.
  • a wireless network such as Bluetooth, WiFi, Zig-Bee or wireless LAN, or wireless WAN such as 3G or 4G networks or other wireless networks which may be available from time to time.
  • the receiver may be hard wired to the receiver or remote base station.
  • the data transmitted to the receiver is processed in real-time, although it is contemplated that data could be obtained from the receiver in batches and subsequently processed off-line. Real-time processing of sensed data supports real-time monitoring and adaptation of operating procedures to suit the present operating conditions.
  • FIGS 4A and 4B there is shown a first example of an operating condition that can be sensed using the sensing device of the present invention.
  • the lance is "out of bath", that is, the lance tip 310 is not submerged in the molten bath 116 and accordingly will have no forces exerted there upon by slopping or bath movement.
  • the corresponding output or graphical plot 400 shown in Figure 4B shows no displacement of the lance in the X, Y or Z axes.
  • An "out of bath” condition is clearly undesirable, not only because gases or other materials injected via the lance 114 are not injected directly into the molten bath 116, but also because this can cause additional wear on the lance tip 310 which will not be protected by a coating of solidified slag which forms on the lance tip during normal operating conditions.
  • FIG. 5A there is schematically shown a "top jetting" condition, where the lance 114 position is just short of being submerged in the molten bath 116.
  • the lance tip 310 is positioned just above the molten bath 116 surface.
  • This condition is undesirable for similar reasons to the "out of bath” condition, i.e. gases or other materials are not injected directly into the molten bath 116 and the lance tip 310 is caused to be prematurely worn.
  • a “top jetting” condition is indicated by a graphical plot 500 as shown for example in Figure 5B .
  • This graphical plot 500 shows relatively homogenous movement of the lance in the X, Y and Z planes with similar ranges of movement of similar magnitude in three dimensions. This pattern of movement results from limited impact of slopping or bath movement on the lance.
  • FIG. 6A there is shown a normal or desirable operating condition wherein the lance 114 is submerged in the molten bath 116 at the optimal depth and the slag in the molten bath is fluid.
  • the pattern of movement of the lance 114 will typically show some irregularities with respect to displacement of the lance in the X, Y and Z planes as evidenced by the graphical plot 600 shown in Figure 6B .
  • This irregular pattern of lance displacements of similar magnitudes is caused by regular bath slopping facilitated by a fluid slag with the lance tip submerged at an optimal depth.
  • FIG. 7A and 7B there is shown an example of an abnormal operating condition, wherein the lance 114 is submerged too deep in the molten bath 116.
  • the resulting graphical plot 700 shown in Figure 7B indicates erratic displacement of the lance in the X, Y and Z planes.
  • the magnitude of the displacements is random in nature.
  • Other factors that can result in similar graphical plots include where the slag is too viscous resulting in unpredictable bath slopping which may additionally be indicative of a bath temperature that is too low.
  • Normal acceleration forces can also be measured which will arise from interactions with the molten bath due to phenomenon such as induced wave motion or bath slopping.
  • the device may be configured to generate a visible, audible or tactile alert if undesirable operating conditions are detected.
  • a visible alert may take the form of a graphical plot as described with reference to the Figures.
  • the rings on the graphical plots could be colour coded to more clearly indicate to an operator that when the lance movement in a direction enters a "red zone" for example, that this indicates an undesirable condition within the bath and that restorative action should be taken.
  • the visible alert may be simplified into a numeric or colour coded display, for example a single green, yellow or red light to indicate desirable, neutral or undesirable conditions within the bath. Whichever form the alert takes, it is intended to alert the operator to undesirable conditions in the reactor in real-time allowing corrective action to be taken in a timely manner.
  • FIG. 8 there is shown a flowchart illustrating the method 800 for determining an operating condition in a molten bath of a top-submerged lancing injector reactor system as hereinbefore described.
  • the method includes at step 810 providing a sensing device mounted on a lance. At least a lower end of the lance is positioned or lowered into the molten bath towards a submerged position at step 820.
  • Sensed signals are generated in response to movement of the lance at step 830 and transmitted to a receiver at step 840.
  • the sensed signals are processed to determine at least the magnitude and direction of lance movement.
  • the magnitude and direction of lance movement is indicative of one or more operating conditions in the molten bath at step 860.
  • the method is iterative such that the sensed signals are either generated continuously, or at regular, or even random intervals to provide ongoing monitoring of the operating conditions in the molten bath.
  • the sensing device of the present invention confers various advantages and benefits to the operation of top-submerged lancing injector reactors.
  • the operation of the lance itself acts as a sensor to indicate the conditions in the molten bath by means of the sensing device.
  • By measuring lance motion various reactor operating characteristics are obtained and can be measured, recorded and compared with desirable or optimal plant operating conditions to enable corrective action to be taken in a timely manner responsive to sensed conditions which are sub optimal. Therefore the efficiency of the reactor can be optimised.

Claims (14)

  1. Système de réacteur à lance d'injection immergée par le haut (100), comprenant :
    un bain de fusion (116);
    une lance (114) déplaçable entre une position immergée et une position non immergée, ladite lance (114) ayant une extrémité inférieure (304) et une extrémité supérieure (306), ladite extrémité inférieure (304) étant configurée pour être abaissée dans le bain de fusion (116) en position immergée; et
    un dispositif de détection (302) monté sur la lance (114) et configuré pour détecter un ou plusieurs mouvements de, ou forces appliquées à, la lance (114) en position immergée, lesdits mouvements ou forces détectés indiquant un état de fonctionnement dans le bain de fusion (116).
  2. Système de réacteur à lance d'injection immergée par le haut (100) selon la revendication 1, dans lequel la lance (114) est montée sur un dispositif de levage opérable pour positionner la lance (114) entre la position immergée et la position non immergée, ladite lance (144) étant montée sur le dispositif de levage à un point intermédiaire entre l'extrémité inférieure (304) de la lance (114) et une extrémité supérieure (306) de la lance (114), ledit dispositif de détection (302) étant monté à proximité de l'extrémité supérieure (306) de la lance (114).
  3. Système de réacteur à lance d'injection immergée par le haut (100) selon la revendication 1 ou 2, dans lequel le dispositif de détection (302) est un capteur d'orientation.
  4. Système de réacteur à lance d'injection immergée par le haut (100) selon la revendication 1 ou 2, dans lequel le dispositif de détection (302) comprend un ou plusieurs parmi un accéléromètre, un gyroscope et un magnétomètre.
  5. Système de réacteur à lance d'injection immergée par le haut (100) selon l'une des revendications 1 à 4, comprenant également un récepteur configuré pour recevoir une pluralité de signaux détectés.
  6. Système de réacteur à lance d'injection immergée par le haut (100) selon la revendication 5, dans lequel le récepteur comprend un moyen de traitement configuré pour analyser les signaux détectés afin de déterminer au moins l'ordre de grandeur et le sens du mouvement de lance.
  7. Système de réacteur à lance d'injection immergée par le haut (100) selon la revendication 5, dans lequel le récepteur est communicativement couplé à une station de base située à distance comprenant un moyen de traitement configuré pour analyser des signaux afin de déterminer au moins l'ordre de grandeur et le sens du mouvement de lance.
  8. Système de réacteur à lance d'injection immergée par le haut (100) selon la revendication 6 ou 7, dans lequel le moyen de traitement génère une sortie pour indiquer visuellement l'état de fonctionnement du bain de fusion (116) en fonction des signaux détectes.
  9. Système de réacteur à lance d'injection immergée par le haut (100) selon la revendication 8, dans lequel la sortie a la forme d'une ou plusieurs représentations graphiques pour fournir un indicateur visuel du déplacement de la lance (114) dans au moins deux dimensions.
  10. Procédé de détermination d'un état de fonctionnement dans un bain de fusion (116) d'un système de réacteur à lance d'injection immergée par le haut (100), ledit procédé comprenant les étapes suivantes :
    prévoir un dispositif de détection (302) monté sur une lance (114);
    abaisser au moins une extrémité inférieure (304) d'une lance (114) dans le bain de fusion (116) vers une position immergée;
    générer un ou plusieurs signaux détectés en réponse à des mouvements et/ou forces agissant sur la lance (114) en position immergée; et
    transmettre les signaux détectés à un récepteur;
    traiter les signaux détectés pour déterminer au moins l'ordre de grandeur et le sens du mouvement de lance ou une force y appliquée;
    ledit ordre de grandeur et ledit sens du mouvement de lance ou ladite force appliquée à la lance (114) indiquant un état de fonctionnement dans le bain de fusion (116).
  11. Procédé de détermination d'un état de fonctionnement dans un bain de fusion (116) selon la revendication 10 dans lequel l'étape de traitement des signaux détectés pour déterminer au moins l'ordre de grandeur et le sens du mouvement de lance comprend la détermination d'un déplacement de la lance (114) dans les axes X, Y et Z.
  12. Procédé de détermination d'un état de fonctionnement dans un bain de fusion (116) selon la revendication 10 ou 11, dans lequel le traitement des signaux détectés pour déterminer au moins l'ordre de grandeur et le sens du mouvement de lance comprend la détermination d'une accélération de la lance (114).
  13. Procédé de détermination d'un état de fonctionnement dans un bain de fusion (116) selon la revendication 10 ou 11, dans lequel le traitement des signaux détectés pour déterminer au moins l'ordre de grandeur et le sens du mouvement de lance comprend la détermination d'un mouvement rotatif de la lance (114).
  14. Procédé de détermination d'un état de fonctionnement dans un bain de fusion (116) selon la revendication 10 ou 11, dans lequel le traitement des signaux détectés pour déterminer au moins l'ordre de grandeur et le sens du mouvement de lance comprend la détermination d'une vibration et/ou déformation.
EP15831159.7A 2014-12-24 2015-12-23 Système de réacteur à injecteur de lance immergée par le haut comprenant un dispositif de détection permettant de déterminer l'état opérationnel d'un bain fondu Active EP3245465B1 (fr)

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PL15831159T PL3245465T3 (pl) 2014-12-24 2015-12-23 System reaktora z wdmuchiwaczem lancowym do przedmuchiwania od góry mający urządzenie wykrywające do określania warunków roboczych w roztopionej kąpieli

Applications Claiming Priority (2)

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AU2014905265A AU2014905265A0 (en) 2014-12-24 A sensing device for determining an operational condition in a molten bath of a top-submerged lancing injector reactor system
PCT/IB2015/059904 WO2016103195A1 (fr) 2014-12-24 2015-12-23 Dispositif de détection permettant de déterminer l'état opérationnel d'un bain fondu d'un système de réacteur à injecteur de lance immergée par le haut

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JP6973339B2 (ja) * 2018-09-19 2021-11-24 Ｊｆｅスチール株式会社 精錬用ランス設備
JP2022519386A (ja) * 2018-10-23 2022-03-23 ナカノ，ジンイチロウ 炉ランスの位置を制御する方法
JP7325196B2 (ja) * 2019-03-11 2023-08-14 株式会社東芝 金属溶融及び溶解状態確認システム
CN113249677A (zh) * 2021-06-22 2021-08-13 天龙科技炉业(无锡)有限公司 可控气氛井式渗氮炉

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CN107110604B (zh) 2020-01-21
AU2015370482B2 (en) 2019-04-18
PE20171020A1 (es) 2017-07-17
AU2015370482A1 (en) 2017-08-03
TR201909377T4 (tr) 2019-07-22
CN107110604A (zh) 2017-08-29
EA201791303A1 (ru) 2017-12-29
KR102022170B1 (ko) 2019-09-17
WO2016103195A1 (fr) 2016-06-30
JP6499293B2 (ja) 2019-04-10
EA032999B1 (ru) 2019-08-30
PL3245465T3 (pl) 2019-09-30
KR20170094417A (ko) 2017-08-17
JP2018508730A (ja) 2018-03-29
EP3245465A1 (fr) 2017-11-22
ES2732225T3 (es) 2019-11-21

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