WO2018117731A1

WO2018117731A1 - Charging material profiling apparatus

Info

Publication number: WO2018117731A1
Application number: PCT/KR2017/015330
Authority: WO
Inventors: 김도훈; 이진휘; 최자영; 김용수
Original assignee: 주식회사 포스코
Priority date: 2016-12-23
Filing date: 2017-12-22
Publication date: 2018-06-28
Also published as: JP2020502369A; KR101858871B1; JP6808838B2; CN110088303A

Abstract

The present invention provides an apparatus and a method for charging material profiling, the apparatus and method tracking charging materials and being used for a blast furnace operation by using inventory information on the charging materials stacked at each period, and the charging material profiling apparatus of the present invention comprises: a belt conveying measurement unit for generating volume information for indicating a fixed conveyance amount per hour for the charging materials which are in the process of conveying from each of a plurality of charging material factories to a charging material storage place connected to a blast furnace by means of a belt conveyer; and a profiling unit for calculating stacking information of each charging material which is conveyed and stacked from each of the plurality of charging material factories to the charging material storage place on the basis of the volume information on the charging materials.

Description

Charge profiling device

The present invention relates to a charge profiling device, such as coke and fuel.

In general, molten iron production in blast furnaces is carried out by charging iron ore and coke at the top of the blast furnace by particle size, and blowing hot air at 1200 ° C, pulverized coal and oxygen from the blast furnace at the bottom of the blast furnace to produce molten material by in-reduction reaction. It is discharged and separated into molten iron (Pig Iron) and slag, and only pure molten iron is sent to the steel mill.

In this blast furnace operation, the distribution of lead and raw materials (called 'profiles') inside the blast furnace must be stabilized so that the gas in the furnace flows smoothly to reduce and melt the iron ore under good conditions and to improve the utilization of the gas in the furnace. It can reduce fuel cost, manufacture high quality molten iron, and perform operation economically, and improve productivity and blast furnace life.

As described above, the quality information of the charges used by the blast furnace is very important, but for example, if there is no tracking of which coke is being transferred to the coke bin of which blast furnace, it is not necessary to take preemptive operations for the management of yellowing. There is a problem that there is a problem, there is a limitation in operating the pre-response according to the quality of the coke to be used, and also there is a problem that a large delay time occurs when the supply personnel change the supply plan because the coke transport situation is not known.

Such a prior art can be easily understood with reference to Republic of Korea Patent Publication No. 10-2001-0045768, Republic of Korea Patent Publication No. 10-2004-0017944 and the like.

According to one embodiment of the present invention, there is provided a charge profiling apparatus that can track the charges and utilize them in the blast furnace operation using the stacked charge inventory information by group.

In order to solve the above-described problems of the present invention, a charge profiling apparatus according to an embodiment of the present invention relates to a charge being transferred from each of the plurality of charge factories to the charge storage associated with the blast furnace by a belt conveyor. A belt transfer measuring unit for generating volume information indicating a predetermined amount of feed per hour, and a profile for calculating stacking information of each of the charges transferred and stacked from the plurality of charge factories to the charge storage based on the volume information of the charges. It may include a ring portion.

According to an embodiment of the present invention, by using the coke information in the coke bin to predict the impact of the pre-explosion to be able to respond in advance to reduce the cost of using additional coke for the recovery of the misunderstanding due to the wrong decision It is possible to prevent operation troubles in advance, so that each unit coke can be transferred to the planned blast furnace.

1 is a schematic diagram of a charge profiling apparatus according to an embodiment of the present invention.

2A is a schematic configuration diagram of a belt feed measurement unit of a charge profiling apparatus according to an embodiment of the present invention.

2B is a schematic structural diagram of a profiling unit of a charge profiling apparatus according to an embodiment of the present invention.

3 and 4 are operational flowcharts of the charge profiling apparatus according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1, the charge profiling apparatus according to an embodiment of the present invention may include a belt transfer measuring unit 110 and a profiling unit 120.

The belt transfer measuring unit 110 may generate volume information of the charge being transferred to the belt conveyor.

In more detail, the belt transfer measuring unit 110 may generate volume information indicating a predetermined amount of transfer amount for a charge being transferred from each of the plurality of charge factories to the charge storage associated with the blast furnace by the belt conveyor.

The belt transfer measuring unit 110 may generate volume information of each charge being transferred from each of the plurality of charge factories to the plurality of charge repositories.

The belt transfer measuring unit 110 may adjust the zero point of each of the plurality of measurement sensors based on the amount of charge of each of the plurality of charge factories and the volume information of each of the plurality of measurement sensors.

Here, the charge may be a variety of lead / raw material, that is, iron ore, coal or coke, and will be described later based on the coke.

Referring to FIG. 2A, in conjunction with FIG. 1, the belt transfer measuring unit 110 may include a coke from the interface unit 111 and the interface unit 111 communicating with at least one of the profiling unit 120, the premises transport system, and the blast furnace system. Information processing unit 112 for collecting and processing at least one of transport information, premises transport information, sensor data of the event, event generation unit 113 for generating at least one of the volume transport event or the equipment operation state event, the destination of the coke volume It may include a volume transfer event processor 114 for processing the transfer event, the facility connection information generator 116 to determine the position information of the coke being transferred from the set facility configuration 115.

The interface unit 111 receives information from an operation communication interface 111a for receiving coke operation information, an on-site transport communication interface 111b for receiving transportation information of coke up and down, and a sensor for detecting a state of a belt conveyor for transferring coke. HMI communication for transmitting the sensor communication interface 111c, the final storage, that is, the profiling communication interface 111d for transmitting information of the charge volume, which has been entered into the final coke bin, to the profiling unit 120, and the position information of the coke volume. It may include an interface 111e.

More specifically, the telecommunications interface 111a may receive full text of the tally of a level 1 system (DCS) or level 2 system (process computer) associated with the coke process. In some cases, instrument data managed by a Level 1 system may be received. For example, belt weight sensor and bin level sensor data may be managed in a level 1 system and may be collected indirectly. The operation communication interface 111a may use a communication method such as transmission control protocol (TCP), user datagram protocol (UDP), and OLE for process control (OPC).

The premises transport communication interface 111b may receive the full text of the coke loading of the truck transporting the yard coke, and the completion of the event to get off the transported coke to the WHARF. The on-premises transport communication interface 111b may use TCP, UDP, and serial communication methods.

The sensor communication interface 111c may receive data from the sensor, and may use TCP, UDP, or serial communication methods.

The profiling communication interface 111d may transmit the information of the charge volume, which has been entered as the last coke bean, to the profiling unit 120. When the profiling communication interface 111d is present on the same server as the profiling unit 120, the profiling communication interface 111d may be used as a shared memory or a database. If it is present in another server, general communication methods such as TCP and UDP can be used.

The human-machine interface (HMI) communication interface 111e can transmit the location information of the volume to display the real-time transfer status of the coke volume transferred through the volume transfer event processor 113a to the HMI, and is the same server as the HMI system. If it exists in, it can be implemented as a shared memory, database, etc., if it exists in other server can use a common communication method such as TCP, UDP.

The information processing unit 112 may include a transport operation information collector 112a, an on-site transport operation information collector 112b, a sensor data collector 112c, and a sensor data corrector 112d.

The transfer operation information collector 112a may extract operation information received from the operation communication interface 111a and store the operation information in a shared memory or a database. For example, the collected operation information may mainly be operation related information for a coal operation. Can be. That is, start / end of coke extruding of oven, start / end of cutting out Coke Dry Quenching (CDQ), start / stop of wet operation, start / stop of wet operation, change belt direction, damper direction, coke of bunker, goe coke screening operation / Stop, coke bin selection for coke coking, and the like.

If you have a large amount of data to collect or need faster processing, you can store it using shared memory.

The premises transport operation information collector 112b may extract operation information of the truck received from the premises transport communication interface 111b and store it in a shared memory or a database. For example, the collected information may include yard coke loading, Yard Coke's wharf can be completed.

The sensor data collector 112c may extract direct and indirect sensor data received from the sensor communication interface 111c and the operation communication interface 111a and store the data in a shared memory or a database. Basic information for generating volume information of coke can be generated, and the faster the collection cycle, the more helpful it can be for producing accurate volume information. However, due to the level 1 system and instrument operating characteristics, data can be collected primarily in seconds.

For example, the collected information may be CDQ moving weight instantaneous value, belt weight instantaneous value, empty level instantaneous value, volume instantaneous value, and the like.

The sensor data corrector 112d may correct the stored sensing data, for example, correct an error of the weight sensor. In general, weight sensors calibrate once a year to several years, but due to environmental constraints, they can only be zeroed and not often weighed for accuracy. Accordingly, different numerical values may be shown for each weight sensor for the same coke volume. Therefore, if the coke volume transfer is calculated only by the numerical value of the weight sensor, the error may become large.

For example, if there are A and B weight sensors, the coke produced on the day passes through both the A and B weight sensors. Based on this, the volume of the A and B weight sensors is scaled to calculate the volume. It can be calibrated so that it can be used as the next day's calibration.

Referring to FIG. 3, when the sensor data corrector 112d receives a coke daily yield (S11), the sensor data corrector 112d collects one day of each weight sensor data (S12), and calculates a scale adjustment value of each weight sensor based on the yield. (S13) It is possible.

The event generator 113 may include a volume transfer event generator 113a for generating an event for the coke volume to be transferred, and an equipment operation state event generator 113b for generating an operation state change event for each equipment based on the transport information of the coke. ) May be included.

The volume transfer event generator 113a may generate the basic volume transfer event based on the collection period by using the sensor data instantaneous value and the premises transport information.

For example, in the case of the instantaneous weight type treatment, it is possible to collect the start / end and weight information of the coke feed volume. That is, if one ton was collected when the belt weight instantaneous value was collected at the present time in the environment collected in seconds, the volume of one ton for one second may be considered as past the weight sensor.

For example, in the case of the bin level instantaneous type processing, it may be possible to collect information on how much of the coke feed volume is stored in the bin. In other words, in an environment where 1 second is collected, the bin level is 70% higher than 1 second before, and if the current level is 73%, the bin level is considered to be 3% higher by 1 second, and each bin has a total storage weight. This may be converted into weight.

For example, in the case of a belt level instantaneous type of treatment, it may be possible to collect start / end information of the coke feed volume. The belt level is a sensor that can only determine whether coke is passing through the point of the belt.If the level was 0cm (or below a certain reference value) one second before and 10cm at the current collection, it means that the coke is passing for one second. Can be.

For example, in the case of volume instantaneous type treatment, it is possible to collect the start / end and volume information of the coke conveying volume. That is, if 1m ³ was collected when the instantaneous value was collected at the present time in an environment collected by 1 second, 1m ³ volume could be regarded as past the volume sensor for 1 second.

More specifically, it may be possible to collect that the coke conveying volume of the weight loaded on the truck is being transferred in the case of the handling of intra-city transport. That is, at the present time, when the disembarkation of the warp is completed, the volume of the weight may be regarded as transferred to the warp.

In addition, the volume transfer event generator 113a may generate the end of the existing volume or the start of a new volume as an event by using the coke transfer operation information. Coke transfer operations that affect the events generated may include coke extrusion start / end of the oven, CDQ cut start / end, wet operation time / end, and the like.

The facility operation state event generator 113b may generate an operation state change event for each facility using the coke transfer operation information. Coke transfer operations that affect the events generated may include belt start / stop, damper redirection, bunker coke / got coke screening start / stop of bunkers, and coke bin selection for coke breeze.

In the case of belt start / stop, the damper belt deactivation, which determines the coke's conveying direction, can affect the determination of the coke's destination.In the case of the damper direction change, specify which belts will be delivered to multiple exiting belts in one belt. If the bunker's minute coke / lump coke screening operation / stop is enabled, the fact that the bunker is operating both the minute coke and the lump coke screening means that the coke is temporarily stored in the bunker. One coke volume can mean that all of them are stored in a bunker, and in the case of selecting coke bins for coking, it can serve as an explicit indication of where among the coke bins the conveyed coke volume is stored. And may affect the calculation of the laminated structure of cokebin profiling.

Referring to FIG. 2B together with FIG. 1, the profiling unit 120 receives a measurement communication interface 121 and a measurement communication interface 121 that receive coke volume information, which is produced as a final coke bean, from the belt transfer measurement unit 110. An entry event generator 122 for generating an event based on the coke volume entry information received through the entry / extraction event processor for generating change information of the stacked structure of the charge in the coke based on the entry event and the extraction event of the coke ( 123), a grain / break compensator 124 for correcting a laminated structure in the process of grain events and a break event according to the amount of coke coke volume, a break event generator 125 generating an event for the start and end of the coke break; The operation information received from the blast furnace operation communication interface 126 and the blast furnace operation communication interface 126 to receive operation information related to the coke cutting of the blast furnace. The blast furnace cutting operation information collector 127 for storing the beam, and the HMI communication interface 129 for transmitting the profiling information of the coke bin to the outside.

The blast furnace operation communication interface 126 may receive full-time operation information of the level 1 system (DCS (central control room)) and the level 2 system (process computer) related to the coke bin cutting of the blast furnace, and the TCP, UDP, OPC, etc. A communication method can be used.

The measurement communication interface 121 may be used to receive the information of the volume entered in the final coke bin from the belt transfer measurement unit 110, and if it exists in the same server as the belt transfer measurement unit 110, the shared memory or database. It may be implemented as, if present in another server may be implemented by a common communication method such as TCP, UDP.

The blast furnace cutting operation information collector 127 may extract operation information received from the blast furnace operation communication interface 126 and store it in a database or a shared memory, and the collected information may be information related to a cutting operation for cokebin. . That is, the cokebin cutting start / end, cokebin cutting amount and the like.

In the case of the grain / extraction compensator 124, the coke bin is a coke temporary storage that is used for a long time over several years, and even if the same amount is added to each coke bin due to the wall coal, the stacking level after the grain may be different. Wall-attached coal can refer to minute coke that has stuck to the wall due to long-term coke operation, and since these wall-attached coals differ in appearance for each coke bin, empty levels are stored when stored in coke bins in the transferred coke volume. This increasing information needs to manage performance for each coke bean. Thereby, the laminated structure at the time of granulation and a cutting event process according to the coke volume amount can be correct | amended for each coke bin.

The HMI communication interface 128 may transfer related information for displaying profiling information in the coke bin to the HMI. If the HMI communication interface 128 exists in the same server as the HMI system, the HMI communication interface 128 may be implemented as a shared memory or a database. If it exists in the network, general communication methods such as TCP and UDP can be used.

Referring to FIG. 3 together with FIG. 2, the sensor data corrector 112d serves to correct a volume event by correcting an error of a weight sensor. The sensor data correction is operated at the time point when the coke daily production operation data is received through the operation communication interface 111a (S11). Then, the daily weight sensor data is selected using the data record collected by the sensor data collector 112c based on the received time point (S12). By comparing the output and the daily performance of each weight sensor collected, the scale value of each weight sensor is adjusted (S13). The scale value of the modified weight sensor is used as a correction formula to calculate the amount of transport of the volume event in step S25.

The coke feed information and the sensor data may be collected at specific cycles through the operation communication interface 111a and the sensor communication interface 111c. Therefore, the sensor data collector 112c may check whether the collection cycle is started (S21). From the received data, transport operation information and sensor data necessary for generating a volume event may be extracted and collected (S22).

Another form of transporting coke may be on-premises transport. Accordingly, the campus transportation operation verticalizer 112b may collect information about the campus transportation through the campus transportation communication interface 111. However, unlike the general operation, the sensor data can be collected only in the form of events, it is possible to check whether the intra-area transport event has occurred through the intra-area transport communication interface 111 (S31). When the premises transport event occurs, extract and collect the premises transport operation information required for generating the volume event (S32).

The facility operation state event generator 113b determines whether there is data collected through steps S22 and S32 (S23) and, if present, checks whether information on the operation state of the facility is also collected from the collected data. This generates an event for the operation status of each facility (S24).

Combining data such as sensor data, facility operation status, premises transport, and corrected scale values of the weight sensor, a volume event being transported in each facility is generated (S25).

The volume transfer event processor 114 generates connection information between facilities in the process of initializing the system at the time of starting the system so that the volume transfer direction can be dynamically determined (S41). Each time a volume event is generated, the transfer event is processed. First, it is checked whether a volume event has occurred (S42), and the event is processed as being transferred to a related facility for the corresponding volume transfer (S43). Then, in order to display the result of processing the event on the user HMI, the event is transferred to the real-time coke volume transfer HMI through the HMI communication interface 111e.

Meanwhile, referring to FIG. 4 along with FIG. 2B, the cutting operation of the blast furnace for coke bin is a relatively long time operation, and the blast furnace cutting operation information collector 127 collects the corresponding data at a specific period. Therefore, it is checked whether the collection cycle for the cutting operation is started (S51). If the collection cycle has been started, the blast furnace cutting operation data is collected through the blast furnace operation communication interface 126 (S52). The cutoff event generator 125 generates an event for cutting start and end from the corresponding data (S53).

In the blast furnace cokebin can know whether or not the corresponding event occurs through the belt transfer measuring unit (110). Therefore, the generation event generator 122 checks whether the generation of the volume event for the coke bin has occurred through the measurement system communication interface 121 (S61). This collects data on which coke bins are being transferred to which coke bins, and how much is being collected (S62). This generates a specific amount of coke coarse event for the coke bin (S63).

The entry / extraction event processor 124 checks whether there is an entry or egress event through the data collected through steps S53 and S54, and processes the entry and egress events for the corresponding coke to stack the stock in the coke and stack in the coke. Generate the information (S55). In this case, the change amount information of the cokebin is used to accurately calculate the stacking information in the cokebin.

The grain / drop compensator 123 is responsible for correcting the level of rise or fall of the cokebin level relative to the amount of grain caused by the wall attachment coal. Since the state of wall attachment can change from time to time, it should be able to check and correct it periodically. Therefore, it is checked whether the correction period has started (S71).

If only pure grain volume occurs in the cokebin, the amount of change in the cokebin is selected one day from the existing results (S72). Next, when only pure cutting of the coke occurs, the amount of change of coke is selected one day from the existing results (S73).

Next, when granulation and cutting occur simultaneously, data on how coke is changed is collected, and data of the steps S71 and S73 are collected to generate a calculated value for the amount of coke bin change (S74). The cokebin variation information is used to calculate the stack structure in the coke bin after processing the granulation / ejection event of step S55.

The terms used in the above description are summarized as follows.

Oven: A facility for high temperature dry distillation of coal as raw material to have a strength and particle size sufficient for blast furnace operation.

On-Site Transportation: The trucking of stock coke in yards to the warp area of each coke plant.

Wharf: A facility that collects cokes that have been sprayed and digested with water to prevent the oxidation of coke dried in the oven and lowers it to a temperature suitable for transport, and the yard coke transported by truck.

CDQ: A facility to extinguish coke in the oven and extinguish coke to reduce the temperature to a temperature suitable for conveying, and dry coke produced through this facility has superior strength quality compared to wet coke sprayed with water.

CDQ Bunker: A temporary inventory of cokes produced from CDQ by the coke plant.

Belt Conveyor: Belt installation used to transport coke.

Damper: If there are several exit belts connected to one belt, a facility to decide which belt to transfer to.

Weight sensor: A measuring instrument inserted in the middle of a belt that measures the instantaneous weight of coke passing through the instrument.

Belt Level Meter: A measuring instrument for measuring the height of coke carried by a belt.

Bunker: An inventory store that sorts and transports coke in a temporary collection. Mainly, cokes of substandard size are collected, and coke of substandard size may be temporarily collected for blast furnace repair, belt failure, or for policy reasons.

Bunker-Bin Level Meter: Instrument for measuring the height of coke in the bunker

Coke Bean: An inventory store that temporarily collects coke transported from a coke plant on the blast furnace side.

Coke Bean Level Meter: A measuring instrument for measuring the height of coke stacked on a coke bean.

As described above, according to the present invention, by using the coke information in the coke bin to predict the impact of the pre-exposure to enable the pre-operation operation to reduce the additional cost of coke used for the recovery of the road due to the wrong judgment This technology can be used in general fuel, or in tanning operation, to prevent operation troubles in advance so that the coke for each unit can be transferred to the planned blast furnace.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, but is defined by the claims below, and the configuration of the present invention may be modified in various ways without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art that the present invention may be changed and modified.

Claims

A belt conveyance measuring unit configured to generate volume information indicating an amount of conveying per predetermined time with respect to the contents being transported by the belt conveyor from each of the plurality of contents factories to the contents storage associated with the blast furnace; And

A profiling unit for calculating stacking information of each of the charges which are transferred and stacked from each of the plurality of charge factories to the charge storage based on the volume information of the charges

Charge profiling device comprising a.
The method of claim 1,

And the belt transfer measuring unit generates volume information of each charge being transferred from each of the plurality of charge factories to a plurality of charge repositories.
The method of claim 1,

And the profiling unit calculates stacking information of each of the charges transferred from each of the plurality of charge factories and incorporated into at least one of the plurality of charge reservoirs.
The method of claim 1,

The belt transfer measuring unit adjusts a zero point of each of the plurality of measurement sensors based on the amount of charge of each of the plurality of charge factories per volume and the volume information of each of the plurality of measurement sensors. Ring device.
The method of claim 1,

The profiling unit calculates the change amount of the charges in each charge store based on the change amount of the charges relative to the charge amount of the charges in each charge store for each period, and the change amount of the charges compared to the amount of charges cut out of each charge store for each period. Charge profiling device to calculate.
The method of claim 1,

The belt conveyance measuring unit

An interface unit in communication with at least one of the profiling unit, the premises transport system, and the blast furnace system;

An information processing unit for collecting and processing at least one of transport information, premises transport information, and sensor data from the interface unit;

An event generator for generating at least one of a volume transfer event and a facility operation state event;

A volume transport event processor for processing a destination transport event of the corresponding charge volume; And

Facility connection information generator for grasping the location information of the contents being transported from the set facility configuration

Charge profiling device comprising a.
The method of claim 6,

The interface unit

An operation communication interface for receiving operation information of the charge;

On-premises transport communication interface for receiving loading and unloading transport information of the charge;

A sensor communication interface for receiving information from a sensor detecting a state of a belt conveyor carrying a charge;

A profiling communication interface for transmitting information of a charge volume encapsulated into a final storage to the profiling unit; And

HMI communication interface for conveying position information of the charge volume

Charge profiling device comprising a.
The method of claim 6,

The information processing unit

A transfer operation information collector for storing operation information received from the interface unit;

A premises transport operation information collector for storing transport operation information received from the interface unit;

A sensor data collector configured to store sensing data received from the interface unit; And

Sensor data compensator to calibrate stored sensing data

Charge profiling device comprising a.
The method of claim 6,

The event generator

A volume transport event generator for generating an event against the charge volume being transported; And

Facility run event generator that generates run state change events for each facility based on the transfer information of the charge

Charge profiling device comprising a.
The method of claim 1,

The profiling unit

A measurement communication interface for receiving charge volume information entered into a final reservoir from the belt transfer measurement unit;

A generation event generator for generating an event based on the charge volume entry information received through the measurement communication interface;

An entry / extraction event handler that generates change information of the stacked structure of the charge in the reservoir based on the entry and exit events of the charge.

An entry / extraction compensator that compensates for the laminated structure in the processing of the entry event and the extraction event according to the amount of the charge of the storage

An eruption event generator that generates events for the eruption start and end of a charge

A blast furnace operating communication interface for receiving operation information related to the cutting out of the blast furnace load;

A blast furnace cutting operation information collector for storing operation information received from the blast furnace operation communication interface; And

HMI communication interface for transferring profiling information from the repository to the outside

Charge profiling device comprising a.
The method of claim 1,

The charge profiling apparatus is one of the lead / raw material, iron ore, coal or coke.