WO2019161724A1 - Procédé de fonctionnement d'un dispositif de contrôle d'écoulement de laitier liquide doté de fonctions de remplacement rapide et de gestion des accidents - Google Patents

Procédé de fonctionnement d'un dispositif de contrôle d'écoulement de laitier liquide doté de fonctions de remplacement rapide et de gestion des accidents Download PDF

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Publication number
WO2019161724A1
WO2019161724A1 PCT/CN2019/072729 CN2019072729W WO2019161724A1 WO 2019161724 A1 WO2019161724 A1 WO 2019161724A1 CN 2019072729 W CN2019072729 W CN 2019072729W WO 2019161724 A1 WO2019161724 A1 WO 2019161724A1
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WO
WIPO (PCT)
Prior art keywords
slag
accident
liquid
bag
pipe
Prior art date
Application number
PCT/CN2019/072729
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English (en)
Chinese (zh)
Inventor
王树众
蔡建军
马立伟
赵军
孟海鱼
吴志强
景泽锋
张茜
Original Assignee
西安交通大学
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Publication date
Application filed by 西安交通大学 filed Critical 西安交通大学
Publication of WO2019161724A1 publication Critical patent/WO2019161724A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/10—Slag pots; Slag cars
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Definitions

  • the invention belongs to the technical field of blast furnace slag waste heat recovery, and particularly relates to a method for operating a liquid slag flow control device with rapid replacement and accident handling functions.
  • China's steel output has increased significantly. Longitudinally, China's crude steel output increased from 0.66 billion tons in 1990 to 810 million tons in 2016, and the compound growth rate of production reached 10.1%. Horizontally, in 2016, China's crude steel output reached 810 million tons, and global production accounted for 50.5%.
  • the slag temperature of the blast furnace slag can be as high as 1400 ⁇ 1550 ° C. It can be known that the sensible heat value per ton of high temperature blast furnace slag can be as high as 1260 ⁇ 1880 MJ / ton, equivalent to 60 kg of standard coal / ton.
  • each ton of pig iron produced will produce 0.3 tons of blast furnace slag, calculated in 2016, China's pig iron production of 700 million tons, can be converted to produce more than 210 million tons of blast furnace slag, its sensible heat It is equivalent to 0.13 billion tons of standard coal.
  • the dry treatment technology not only saves a lot of water resources, but also emits no harmful gases such as H 2 S and SO 2 , so it has remarkable economic and environmental performance, and has been highly valued by the industry.
  • the high-temperature and high-viscosity slag is separated from the turntable surface by the high-speed rotating turntable, forming droplets in the air, and then intensely heat exchange with the heat transfer medium in the space to make the liquid
  • the dropping temperature is lowered, the surface of the droplet is phase-changed to form a solidified layer, and as the temperature is further lowered, the droplet gradually transforms into a solid small particle.
  • a high temperature buffer device is required.
  • a liquid slag buffer device with an accident handling function and an operation method are needed to ensure the entire system has the capability of emergency handling, ensuring the safety of the operator and the safety of other supporting systems of the site.
  • high-temperature liquid slag The structure of high-temperature liquid slag is very complicated, and it is difficult to determine directly from the experiment because it is limited by research methods and experimental means.
  • the structure of high temperature liquid slag is mostly inferred from indirect methods. Studies have shown that high-temperature liquid slag has a large amount of sulfate, mixed salt, carbonate, acid salt, chlorate and silicate, so it has high corrosivity. According to the actual operation of the blast furnace, most of the slag slag discharge methods are intermittent slag discharge methods. In order to ensure the stable operation of the dry centrifugal granulation system, a high temperature buffer device is required.
  • the high-temperature slag causes high-temperature corrosion of the liquid slag high-temperature buffer device and its attached pipes.
  • the corrosion of the wall material is mainly caused by static corrosion
  • the auxiliary pipe in addition to the static corrosion, there is a dynamic abrasive phenomenon due to the fast flow rate of the built-in liquid slag. . Therefore, the abrasion of the auxiliary pipe wall material is more common, and it is necessary to frequently replace the auxiliary pipe. Simplify the replacement process of the auxiliary pipeline, which can effectively reduce the replacement time of the auxiliary pipeline and effectively improve the operational stability of the system. To this end, there is a need for a method that can effectively reduce the time required to replace an auxiliary pipe.
  • a method for operating a liquid slag flow control device having a quick change and accident handling function comprising: a slag bag; and a slag bag in the slag bag
  • the inner cavity; the upper part of the slag bag is provided with a liquid slag inlet for the liquid slag to flow;
  • the bottom of the slag bag is equipped with a slag discharge device with a turntable, and the liquid slag can flow out into the subsequent granulation unit through the slag discharge device with the turntable;
  • the bottom side wall of the bag is provided with a slag bag accident slag sizing nozzle and a normal working sizing nozzle;
  • the normal working sizing nozzle external cover has a sealing cover;
  • the first direction of the sealing cover is provided with a plug rod pushing device outer cavity;
  • the sealing cover In the second direction, there is an inner cavity of the accident guiding trough device and an accident slag outlet; the first direction is perpen
  • the operation method includes a quick change operation; the quick change operation includes:
  • the stopper rod When the straight pipe section of the running slag pipe needs to be replaced, the stopper rod is pushed by the stopper rod pushing device to prevent the liquid slag from entering the straight pipe section of the slag pipe from the sizing nozzle, and pushing the device through the accident guiding groove,
  • the accident diversion trough is pushed to the top of the straight pipe section of the falling slag pipe to further prevent the liquid slag from falling into the straight pipe section of the lower slag pipe; after the temperature is lowered, the straight pipe section of the sealing pipe and the straight pipe section of the slag pipe is unscrewed Sealing the bolt on the blue plate, rotating the turntable, pushing the straight pipe section of the lower end slag pipe to the lower part of the sealing cover, and connecting the flange of the straight pipe section of the falling slag pipe, and then pushing the device through the accident guiding groove, The accident diversion trough pulls back the inner cavity of the accident diversion trough device, and then extracts the plug head from the
  • the operation method further includes an emergency quick draining operation, and the emergency quick draining operation comprises: in normal operation, the slag bag accident is filled with the filler in the sizing nozzle; if the emergency slag is encountered, When the liquid slag in the inner cavity of the slag bag needs to be urgently drained, the filler in the slag bag sizing nozzle is opened, so that the high-temperature liquid slag inside the slag bag cavity is quickly discharged into the slag bag cavity to prevent the liquid state. The slag cools and condenses inside the interior of the slag bag.
  • the operation method further includes an accident slagging operation
  • the accident slagging operation comprises: pushing the accident diversion trough to the outlet of the straight slag pipe through the accident diversion trough pushing device under normal operation conditions, The liquid slag that has flowed out normally is cut off, and the liquid slag that has been cut off enters the slag discharge port of the slag pipe accident along the accident guide channel, and finally flows into the accident slag pit; at this time, the operator can repair the subsequent processing unit, if The subsequent processing unit can be completed and repaired at the effective time.
  • the accident diversion trough pushing device pulls back the accident diversion trough, and the liquid molten slag re-flows from the outlet of the straight pipe section of the falling slag pipe, and flows out the straight pipe section of the falling slag pipe.
  • the subsequent processing unit is in normal operation; if the subsequent processing unit cannot complete the maintenance in the normal time, it is necessary to urgently discharge the high-temperature liquid slag in the inner cavity of the slag bag, and simultaneously open the slag bag accident sizing nozzle, and the high-temperature liquid slag is quickly Drain the inner cavity of the slag package.
  • the top of the sealing cover is provided with an infrared thermometer for measuring liquid slag and a liquid level meter for monitoring the liquid level of the falling slag pipe;
  • the operation method further includes a flow control operation, and the flow control operation includes: pushing the device through the stopper rod Linking the plug head to control the flow rate of the liquid slag at the normal working sizing nozzle.
  • the specific control signal is derived from the liquid level gauge above the sealing cover.
  • the control plug The plug head reduces the flow of liquid slag inside the slag tube device; when the liquid level of the level gauge is lower than the warning level, the plug head increases the flow of liquid slag inside the slag tube device, thereby achieving Control of liquid slag flow.
  • a slag-package accident slag discharge baffle is arranged in front of the slag-packing accident slag-removing sluice nozzle, and an accident slagging collection outlet is arranged in the lower part of the slag-package accident slag discharge baffle
  • the slag bag accident slag sizing nozzle, the slag bag accident slag baffle, the accident slag collection outlet and the accident slag pit are used to discharge the slag in the slag bag during an accident.
  • an upper sealing cover is fixedly disposed outside the straight pipe section of the falling slag pipe, and a slag discharging coil is disposed outside the straight pipe section of the falling slag pipe; the slag discharging coil is wound on the straight pipe section of the falling slag pipe for preventing the falling slag
  • the damage of the straight pipe section is broken into the granulation unit; the upper part of the slag pipe coil is fixed on the upper sealing cover; the upper sealing cover is fixed on the turntable by bolts; the turntable is mounted on the fixed shaft of the turntable through the bearing.
  • the lower surface of the accident slag sizing nozzle and the bottom of the slag bag inner cavity are horizontal.
  • the present invention has the following beneficial effects:
  • the slag bag is provided with a slag bag accident, and the slag sizing nozzle can quickly discharge the liquid slag in the slag bag cavity in a short time, and at the same time, a baffle is arranged in front of the slag bag accident slag sizing port It can effectively prevent the splashing of high-temperature liquid slag and deteriorate the operating environment.
  • the slag bag accident is filled with filler in the sizing nozzle; if the slag is urgently drained, the liquid slag in the inner cavity of the slag bag needs to be urgently drained.
  • the filler in the slag bag sizing nozzle is opened, so that the high-temperature liquid slag in the inner cavity of the slag bag is quickly discharged into the slag bag cavity, which can effectively prevent the liquid slag from cooling and condensing inside the slag bag cavity;
  • the flow area of the slag-diameter nozzle is the flow area after the specific calculation, and can be calculated according to the actual volume of the slag bag inner cavity, and basically needs to satisfy the function of discharging the liquid slag into the slag bag cavity within a certain time;
  • the accident slag sizing nozzle material is high-temperature wear-resistant and corrosion-resistant material. At the same time, the accident slag slag sizing nozzle lower plane and the bottom of the slag bag inner cavity are ensured to be drained.
  • an accident guiding device is arranged inside the slag discharging device with a turntable, and the accident guiding trough is pushed to the entrance of the falling slag pipe through the accident guiding trough pushing device, and the liquid slag which is in normal outflow is cut off, and is cut off.
  • the liquid slag enters along the accident diversion trough; the slag discharge accident slag discharge port finally flows into the accident slag pit, and the operator can safely repair the subsequent processing unit, if the subsequent processing unit can be completed at the effective time After the overhaul is completed, the accident diversion tank pushing device pulls back the accident diversion trough, and the liquid slag re-flows from the entrance of the slag discharge pipe and flows out of the slag discharge pipe.
  • the subsequent processing unit operates normally; if the subsequent processing unit cannot When the maintenance is completed within the normal time, when the high-temperature liquid slag in the inner cavity of the slag bag needs to be urgently drained, the slag-package accident sizing nozzle can be opened at the same time, and the high-temperature liquid slag is quickly discharged into the slag bag cavity; Stable and safe.
  • the slag discharge accident slag discharge port and the slag bag accident slag sizing sluice can be collected at the accident slagging collection outlet and finally flow into the accident slag pit.
  • a slag pipe coil is arranged around the straight pipe section at the outlet of the slag pipe, and the slag pipe coil can not only cool the straight pipe section at the outlet of the slag pipe, but also can directly straighten the outlet of the slag pipe.
  • the pipe section is fixed to prevent the falling slag pipe from falling into the subsequent processing unit.
  • the slag discharging device with the turntable has a flow control function, and a plug pushing device and a plug head are arranged on the sizing nozzle on the side of the slag bag, and the plug head is controlled by the plug pushing device to control the liquid slag.
  • the flow rate at the sizing nozzle is determined by the liquid level meter above.
  • the plug can be tightened to reduce the liquid slag inside the slag tube device.
  • Flow rate when the liquid level of the liquid level gauge is lower than the warning liquid level, the plug head can be opened to increase the flow rate of the liquid slag inside the falling slag tube device, thereby realizing the control of the liquid slag flow rate.
  • the slag-carrying device with a turntable can quickly replace the straight pipe section of the damaged slag pipe.
  • the stopper rod is pushed by the stopper rod pushing device to block
  • the liquid slag enters the straight pipe section of the slag pipe from the sizing nozzle, and can also push the accident diversion trough to the top of the straight pipe section of the slag pipe through the accident diversion trough, further preventing the liquid slag from falling into the lower slag pipe straight
  • unscrew the sealing cover bolt on the flange of the straight pipe section of the slag pipe at the straight pipe section of the slag pipe rotate the turntable, push the lower end slag pipe below the sealing cover, and pass the falling
  • the flange of the straight pipe section of the slag pipe is connected centrally.
  • the accidental guide groove is pushed to pull the accidental guide groove back into the inner cavity of the accident guiding trough device, and then the plug head of the sizing nozzle is taken out.
  • the liquid slag can enter the slag discharge device with the turntable from the inner cavity of the slag bag, and finally exit the outlet of the slag pipe, enter the subsequent processing unit, quickly complete the whole replacement process, and then replace the damaged straight pipe section of the damaged slag pipe New, to retain the initial state of apparatus 1 with a plurality; to make a substantial increase in system stability.
  • FIG. 1 is a schematic view of a liquid slag flow control device with rapid replacement and accident handling functions
  • Figure 2 is a schematic view of a slag tube
  • Figure 3 is a schematic view of the accident backflow trough
  • Figure 4 is a partial enlarged view of the sizing nozzle
  • Figure 5 is a schematic view of a rotary slag pipe
  • Figure 6 is a schematic view of the turntable
  • Figure 7 is a schematic view of a threaded bearing.
  • a liquid slag flow control device with rapid replacement and accident handling functions including a slag bag; a slag bag inner cavity 2 is provided in the slag bag; The liquid slag inlet 1 into which the slag flows; the bottom of the slag package is provided with a slag discharge device 3 with a turntable, and the liquid slag can flow out into the subsequent processing unit through the slag discharge device 3 with the turntable.
  • the bottom side wall of the slag bag is provided with a slag bag accident slag sizing port 4 and a normal working sizing nozzle 19;
  • a slag bag accident slag sizing port 4 is provided with a slag bag accident slag baffle 5 in front of the slag bag accident, and the slag bag accident
  • the lower part of the slag discharge baffle 5 is provided with an accident slagging collection outlet 6, and the liquid slag can be taken from the accident slagging collection outlet 6 into the lower accident slag pit 7 for discharging the slag in the slag bag during an accident.
  • the normal working sizing nozzle 19 is externally covered with a sealing cover 21; the sealing cover 21 is provided with a stopper rod pushing device outer chamber 8 in the first direction, an infrared thermometer 9 and a liquid level gauge 10 at the top; and a sealing cover 21
  • the second direction is provided with an accident guiding trough device 11 and an accident slag opening 12; the first direction is perpendicular to the second direction; the bottom of the sealing cover 21 is connected to the straight pipe section 37 of the falling slag pipe through the flange, and the straight pipe section 37 of the falling slag pipe
  • a slag discharge outlet 13 is provided.
  • the accident guiding device 11 is disposed in the inner cavity 36 of the accident guiding trough device, which is composed of the accident guiding trough pushing device 15 and the accident guiding trough 16; the outer portion 8 of the plug pushing device is provided with a plug pushing device 17 and The plug head 18, the plug head 18 can be inserted into the normal working sizing nozzle 19 to control the flow.
  • the slag discharge device 3 with a turntable includes a turntable 38 and a straight pipe section 37 for the slag pipe mounted on the turntable 38.
  • the slag pipe straight pipe section 37 is divided into the left end.
  • the spare slag pipe 30, the upper end slag pipe 31, the lower end slag pipe 32, and the right end slag pipe are the straight pipe section 37 of the running slag pipe.
  • An upper sealing cover 29 is fixedly disposed outside the straight pipe section of the falling slag pipe, and a slag discharging coil 14 is disposed outside the straight pipe section of the falling slag pipe; the falling slag pipe coil 14 is wound on the straight pipe section of the falling slag pipe to prevent the falling slag pipe straight Damage to the pipe section is caused by falling into the granulator and damaging the granulator.
  • the upper portion of the slag tube coil 14 is fixed to the upper sealing cover 29; the upper sealing cover 29 is fixed to the turntable 38 by bolts 23/24.
  • the straight pipe section of the falling slag pipe is provided with a flange portion 22 of the straight pipe section of the slag pipe, and the flange 22 of the straight pipe section of the slag pipe can be flanged with the sealing cover 21;
  • the turntable 38 passes through the upper end of the fixed shaft with a threaded bearing 27 and The lower end of the fixed shaft is fixed with a threaded bearing 28, and at the same time, the turntable 38 can be rotated around the fixed shaft 20 of the turntable;
  • the bearing is composed of the outer side thread 33 of the turntable bearing and the inner side steel ball 34 of the turntable bearing.
  • the slag discharge device 3 with a turntable includes a plug rod pushing device outer chamber 8 placed on the side of the slag discharge device 3 with a turntable.
  • the top of the slag discharge device 3 is provided with an infrared thermometer 9 for measuring liquid slag and a monitoring slag tube.
  • the liquid level level gauge 10 and the other side of the slag discharge device 3 with the turntable are provided with an accident handling guide groove device 11.
  • the accident handling diversion device 11 specifically includes two parts connected to each other, an accident guiding trough pushing device 15 and an accident guiding trough 16; wherein the accident guiding trough pushing device 15 is disposed in the inner cavity 36 of the accident guiding trough device;
  • the accidental diversion tank 16 is retracted into the inner cavity 36 of the accidental diversion trough device, and the slag enters the granulation chamber through the outlet 13 of the slag discharge pipe in the straight pipe section of the slag pipe for granulation;
  • the stopper rod plugs the sizing nozzle of the normal operation, and at the same time, the accident guiding groove pushing device 15 pushes the accident guiding groove 16 to block the bottom of the sealing cover 21 to prevent slag Flowing into the slag pipe outlet 13 in the straight pipe section of the slag pipe; loosening the flange bolt connected to the sealing hood at the upper part
  • the slag bag is provided with a slag bag accident slag sizing port 4 to quickly discharge the liquid slag of the slag bag cavity 2 in a short time, and a baffle 5 is arranged in front of the slag bag accident slag sizing port 4 Effectively prevent the splashing of high-temperature liquid slag and deteriorate the operating environment.
  • the slag discharge accident slag discharge port 12 and the slag bag accident slag sizing port 4 can be collected at the accident slagging collection outlet 6 and finally flow into the accident slag pit 7.
  • a slag pipe coil 14 is disposed around the straight pipe section at the outlet 13 of the slag pipe.
  • the slag pipe coil 14 can not only cool the straight pipe section at the outlet 13 of the slag pipe, but also can exit the slag pipe outlet 13
  • the straight pipe section is fixedly dragged to prevent the slag pipe device 3 from falling into the subsequent processing unit.
  • the accident slag sizing nozzle 4 is used to quickly discharge the liquid slag in a short time; the accident slag sizing nozzle 4 material is a high temperature wear resistant and corrosion resistant material, and the accident slag sizing nozzle 4 lower plane With the bottom of the slag bag inner cavity 2 level, make sure to drain.
  • the operation method of the liquid slag flow control device with the function of rapid replacement and accident handling can realize four kinds of operations, namely, rapid replacement operation, accident slagging operation, rapid emergency slagging operation and flow control operation.
  • the plug head 18 is pushed by the stopper pushing device 17 to close the normal working sizing nozzle 19, thereby preventing the liquid slag from entering the slag pipe from the normal working sizing nozzle 19.
  • the straight pipe section 37 simultaneously pushes the accident guiding channel 16 to the upper part of the straight pipe section 37 of the falling slag pipe through the accident guiding groove pushing device 15, further preventing the liquid slag from falling into the straight pipe section 37 of the lower slag pipe; after the temperature is lowered , unscrew the sealing cover bolt 35 on the flange 22 of the straight pipe section of the slag pipe at the straight pipe section 37 of the falling slag pipe, rotate the turntable 38, push the straight pipe section of the lower end spare slag pipe to the lower side of the sealing cover 21, and pass
  • the flange portion 22 of the straight pipe section of the falling slag pipe is connected centrally.
  • the accident guiding groove pushing device 15 is pulled back to the inner cavity 36 of the accident guiding trough device, and then the normal working sizing nozzle 19 is taken out.
  • the liquid slag can enter the slag discharge device 3 with the turntable from the slag bag inner cavity 2, and finally exit the slag discharge pipe outlet 13 and enter the subsequent processing unit to quickly complete the replacement process and then replace it. Damaged slag pipe straight pipe 37 replaced by a new, the initial state of apparatus 1 continues to keep multiple use.
  • the slag bag accident is filled with filler in the sizing nozzle 4; if the liquid slag in the slag bag cavity 2 needs to be urgently drained in case of emergency slag discharge, the slag bag can be slag
  • the filler in the sizing nozzle 4 is opened, so that the high-temperature liquid slag inside the slag chamber 2 is quickly discharged into the slag chamber 2, which can effectively prevent the liquid slag from cooling and condensing inside the slag chamber 3.
  • the accidental diversion tank pushing device 15 pushes the accident diversion channel 16 to the 13th port of the slag pipe, and cuts the liquid slag which is in normal outflow, and the liquid slag after being cut off follows the accident.
  • the guiding trough 16 enters the slag discharge slag discharge port 12 and finally flows into the accident slag pit 7; at this time, the operator can perform maintenance on the subsequent processing unit, and if the subsequent processing unit can be completed and repaired at the effective time, after the completion of the overhaul
  • the accident guiding trough pushing device 15 pulls back the accident guiding trough 16 , and the liquid molten slag re-flows from the falling slag tube inlet 13 and flows out of the falling slag tube outlet 13 , and the subsequent processing unit operates normally; if the subsequent processing unit cannot be in the normal time
  • the internal maintenance is completed, when the high-temperature liquid slag in the inner cavity 2 of the slag bag needs to be urgently discharged, the slag-
  • the slag discharge device 3 with a turntable has a flow control function, and a plug pushing device 17 and a plug head 18 are arranged on the sizing nozzle 19 on the side of the slag bag, and the plug head is controlled by the plug pushing device 17 to control
  • the flow rate of the liquid slag at the sizing nozzle 19, the specific control signal is derived from the upper level gauge 10, and when the level of the liquid level gauge 10 is higher than the warning level, the plugging head 19 is reduced.

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  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
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  • Metallurgy (AREA)
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Abstract

L'invention concerne un procédé de fonctionnement d'un dispositif de contrôle d'écoulement de laitier liquide doté de fonctions de remplacement rapide et de gestion des accidents. Quand un segment de tuyau rectiligne (37) d'un tuyau de chute de laitier doit être remplacé en cours de fonctionnement, une tête de tige d'arrêt (18) est étroitement ajustée au moyen d'un dispositif pousseur de tige d'arrêt (17), et une gorge de guidage d'écoulement accidentel (16) est également poussée au-dessus du segment de tuyau rectiligne (37) du tuyau de chute de laitier au moyen d'un dispositif pousseur de gorge de guidage d'écoulement accidentel (15), pour empêcher ainsi le laitier fondu de pénétrer dans le segment de tuyau rectiligne (37) du tuyau de chute de laitier par un orifice de dosage (19).
PCT/CN2019/072729 2018-02-26 2019-01-22 Procédé de fonctionnement d'un dispositif de contrôle d'écoulement de laitier liquide doté de fonctions de remplacement rapide et de gestion des accidents WO2019161724A1 (fr)

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CN201810159870.1A CN108277310B (zh) 2018-02-26 2018-02-26 一种具有快速更换及事故处理功能的液态熔渣流量控制装置的操作方法
CN201810159870.1 2018-02-26

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WO2019161724A1 true WO2019161724A1 (fr) 2019-08-29

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CN108277310B (zh) * 2018-02-26 2019-10-11 西安交通大学 一种具有快速更换及事故处理功能的液态熔渣流量控制装置的操作方法

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