KR100317959B1 - Automatic discharge of waste coke in hopper - Google Patents

Abstract

The present invention relates to a device for automatically discharging waste coke in a hopper, and during extrusion, an extruder advances a ram to push coke inside a carbonization chamber toward the opposite side of a transfer car. Before extruding, the carbonization chamber door is opened at the extruder side and the transcar side at the same time, in which part of the coke inside the carbonization chamber falls out of the oven. These cokes are transported to the Naked Coke Hopper through the Naked Coke Kenvey Belt at the bottom of the carbonization chamber. Since the transferred coke contains a lot of moisture, it is impossible to detect the exact level in the hopper by the usual method. The level measuring device accurately measures the coke level in the hopper. When the level reaches above the set value, the discharge truck is called to discharge the fall coke in the hopper. When the hit truck reaches the bottom of the hopper, the position of the truck is determined by an optical sensor installed at the bottom of the hopper. At this time, the position of the truck is detected by five light sensors installed at the bottom of the hopper. In the hopper which has the effect of automatically discharging fallen coke in the hopper with the message that the control system will automatically discharge the information when the truck has reached the start of discharge, and the control system will discharge it automatically. Waste Coke Dispenser

Description

Automatic discharge of waste coke in hopper

The present invention relates to a method of discharging waste coke in the hopper, and particularly, by measuring the amount of coke in the hopper with an infrared moisture device to control the temperature of the hot wire and to measure the coke particle size with a laser particle size meter to block the hopper when discharging the waste coke. The present invention relates to a method for automatically discharging waste coke in a hopper that does not occur.

In general, after charging coal from the top of the coke oven carbonization chamber from the hearth charge, 18 hours of distillation process, usually 32TON is charged to heat about 18 hours at 1400 ℃. After this process, when the coke is compressed after opening the door in the extruder and the other side of the guide car, waste coke or fallen coke occurs when the coke oven door is detached, and the fallen coke is loaded on the storage coke conveyor. It is transferred to the coke hopper. The fallen coke transported in this way enters the vehicle under the hopper to discharge when a certain amount is contained in the hopper to discharge the contained coke, and the coke is filled when the vehicle is filled with coke.

As described above, the conventional waste coke discharging for discharging waste coke is stopped at the top of the hopper 4 by stopping the vehicle under the hopper 4 at a predetermined time, that is, once a day. The hopper gate 3 is opened by using the pandale type operation switch 1 attached to the cable rinser 2. At this time, the gate 3 by the hydraulic pressure by the hydraulic cylinder 7 is opened and closed, and the coke discharged. Will be loaded on the vehicle. The above operation is performed by an electric circuit installed in the control box 8 under the hopper 4. However, since this method does not know the exact amount of waste coke in the hopper 4, the amount of waste coke is measured by the intuition of the driver or road worker. There is this. In addition, since the inside of the hopper freezes during winter, the waste coke inside the hopper is not discharged and a person tries to discharge it by blowing hot steam or forcibly tapping the hopper part with a hammer. But it does not have a big effect.

The present invention was invented to solve the problems of the conventional waste coke dispensing device in view of the above situation, by measuring the moisture content of the coke in the hopper with an infrared moisture device to control the temperature of the hot wire and to measure the coke particle size with a laser particle size It is an object of the present invention to provide a method for automatically discharging waste coke in a hopper to prevent hopper clogging when discharging waste coke.

1 is a block diagram of a conventional waste coke dispensing device,

2 to 4 is a configuration diagram of the waste coke dispensing apparatus employed in the method of the present invention,

5 is a waste coke discharge flow chart according to the method of the present invention.

<Description of Signs of Major Parts of Drawings>

1: Panda switch 2: cable hanger

3: gate 4: hopper

5: drop coke conveyor belt 6: coke dropping

7: Hydraulic cylinder 8: Control box

50: air cylinder 51: light sensor

52: ultrasonic sensor 53: vibrator

54: heating device 55: moisture measuring device

56: particle size measuring device 57: steam inlet pipe

58: sound and warning light device 59: level sensor

70: thermocouple 71: vibrator chain

72: induction motor

The present invention for achieving the above object is a level measuring device 52 for automatically measuring the coke level in the hopper, a hot wire device 54 for preventing the freezing of the hopper 4 in the winter and blowing hot steam Steam control device 57 is provided to give, the moisture measuring device 55 for measuring the coke moisture in the hopper, the particle size measuring device 56 for automatically measuring the coke particle size in the hopper, the clogging of the discharge gate in the discharge of coke in the hopper Vibration 53 to prevent, external sound device 58 to alert the discharge time, position monitoring device 59 to notify the arrival and start time of the discharge truck, dispensing central operation for remote control of all the above operations Device 60 is configured to measure the moisture of the coke with the infrared moisture measuring device 55 to control the temperature by the control of the heating device 54 and to measure the coke particle size with the laser particle size measuring device 56 It is characterized in that the hopper clogging does not occur when discharging the waste coke.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation and effect of the present invention.

During extrusion, the extruder advances the ram and pushes the coke inside the carbonization chamber to the opposite side of the transfer car. Before extruding, the carbonization chamber door is opened at the extruder side and the transcar side at the same time, in which part of the coke inside the carbonization chamber falls out of the oven. These cokes are conveyed to the fall coke hopper 4 through the Nak coke Kenvey belt 5 in the lower part of the carbonization chamber. Since the transferred coke is high temperature and contains a lot of moisture, the level detection in the hopper 4 cannot be detected by the conventional method. Therefore, in the present invention, the coke level in the hopper is accurately measured by the Korean patent application "Enclosed space level measuring apparatus using the poly (No. 96-72254)" (52) of Pohang Iron & Steel Co., Ltd. When the level reaches more than the set value, the discharge truck is called to discharge the fall coke in the hopper. When the called truck reaches the bottom of the hopper, the position of the truck is set by the light sensor 51 installed at the bottom of the hopper. At this time, the position is to detect the truck position by the five light sensors 51 installed on the lower hopper. When information is sent to the central cab that the truck has reached the start of the discharge, the control system will automatically discharge the coke in the hopper with the message that it will discharge.

Such a work sequence is a control system installed in a coke colvin cab, where information is inputted and outputted to remotely monitor the work and, if necessary, to be remotely operated from a central cab.

However, the above work is possible when the coke does not go below freezing, such as in winter, but when it goes down below freezing, the coke is frozen by the moisture inside the coke, and it is difficult to discharge it to the outside of the hopper. Therefore, in the present invention, it is considered that the discharge is difficult by the method used in the prior art, and the vibrator 53 is installed outside the waste coke hopper to smooth the discharge by applying vibration during discharge. In addition, when the freezing occurs in the winter, the effect is not seen, so the heating wire 54 around the hopper was maintained at a constant temperature and the system was configured to eject the coke inside the hopper. In order to achieve such a system configuration, it is necessary to accurately measure the amount of coke in the hopper, so that the infrared water splitter 55 is installed in the hopper to measure the coke moisture to control the temperature of the hot wire 54, and also the coke in the hopper. In order to measure the particle size, a laser particle size 58 was attached to measure the coke particle size so that clogging did not occur during discharge.

The overall system configuration of the waste coke automatic discharge device is shown in FIG. 2. The coke contained in the waste coke discharge hopper increases over time in the hopper. When the amount of coke in the hopper is equal to or more than a predetermined amount, the gate 3 under the hopper 4 is opened to discharge the waste coke accumulated in the hopper. At this time, the gate is opened and closed using the air cylinder 50 instead of the hydraulic cylinder 7 in order to speed up the response.

In other words, the discharge operation is automatically performed to withstand the various constraints of the site.

A detailed schematic diagram of an apparatus for performing waste coke automatic discharge is shown in FIGS. 2, 3 and 4.

The coke level measuring device accurately measures the coke level in the hopper by Pohang Iron & Steel Co., Ltd. domestic patent application "Enclosed space level measuring device using a pulley (application number 96-72254)" (59) for continuous level measurement. Done. This method is a level detector that is well adapted to very poor installations, such as coke, without significantly altering existing installations. It was possible to prevent the risk of equipment accidents resulting from the observation of conventional roadside workers and to increase the measurement accuracy.

The measuring device is installed in the place where the hopper upper coke flows, and is configured to apply the voltage signal measured by measuring the level in the hopper continuously at a predetermined time interval to the central controller 60.

The heating device 54 to prevent the freezing of the winter hopper 4 and the steam control device installed to blow high-temperature steam cannot discharge due to the occurrence of freezing in winter due to moisture contained in the coke in the hopper. In some cases, it is often prevented, and once frozen, a device is used to defrost frozen coke by blowing steam into the hopper using a hot steam supply pipe 57. The device 54 was wound up to keep the hopper temperature constant. The temperature is measured continuously by means of a thermocouple 70 clamped around the hopper. At this time, in order to improve the accuracy of the measurement, the measurement of the thermocouple temperature was applied by the data interpolation method in the automatic discharge device. Hereinafter, the detection of data defects, the deletion of defect data, and an interpolation method will be described.

1. Bad detection of data:

When data abnormality is detected, the data is corrected by interpolation, but when a continuous abnormal value occurs under the following conditions, it is treated as data defect.

(1) When there are more than 3 consecutive channels in other channel except for both side channels

(2) If any two channels have an outlier in succession

2. Deletion and Interpolation of Data:

(1) Delete: If an outlier occurs on one channel at one edge, the data on both sides is deleted.

(2) interpolation:

a) If there are two or more consecutive channels or more than one channel in channels other than both sides, interpolation is performed with both neighboring data of bad channel data.

b) If the following conditions are met, it is judged as anomalous data and interpolated.

Condition :

∥ (y _I -y _I-1 ), (y _{I + 1} -y _I ), (2y _I -y _I-! -y _{I + 1} } ∥ <Lim B

The moisture measuring device 55 for measuring the coke moisture in the hopper 4 continuously measures the amount of coke moisture in the hopper using an external ultraviolet moisture meter. In this case, it was used as a control device for controlling the heating wire installed in the hopper by the measured moisture. In other words, if the amount of water increases, it becomes difficult to discharge due to bamboo bath in summer, and in winter, freezing occurs due to moisture, so proper water maintenance is essential for smoothly performing the discharge.

The particle size measuring device 56 which automatically measures the coke particle size in the hopper may measure the particle size of the coke contained in the hopper using the ultrasonic particle size 58. The measuring device 56 has a large particle size among the cokes contained in the hopper, causing the gate 3 to be blocked at the time of discharge, making automatic discharge difficult. Therefore, if the measured particle size is more than a specific value, contact the central operator center 60 manager to be a manual operation.

The vibrating device 53 for preventing clogging of the discharge gate 3 when discharging coke in the hopper is supported by the vibrator chain 71 in the hopper, and three induction motors 72 are disposed at 120 degree intervals around the hopper. It was installed to prevent clogging of the gate (3) during waste coke discharge. Therefore, the operation was configured by installing the system to operate the vibrating 53 in the control sequence when the coke is discharged from the hopper (4). In order to suppress the damage to the equipment due to the vibration of the vibrating 53 as much as possible one by one operation for about 5 seconds.

The external sound device 58 for alerting the discharge point is to inform the situation that the discharge should be made to the central cab 60 when the coke is discharged according to the coke amount of the hopper detected by the level detector 59. When other discharge operations are initiated, they are used to inform the truck operator of the current operation. The system configuration used sound generator and warning lights.

The position monitor 52, which notifies the arrival and the start of the discharge truck, checks whether the truck has arrived properly under the discharge gate 3 of the hopper before performing the discharge operation. When moving, it checks whether the truck is located at the last discharge point. When the truck arrives at the lower part of the outlet, the location of the truck is detected using the optical sensor 51 installed, and the signal is transmitted to the central cab 60 to proceed with the work. Therefore, the waste coke is discharged to the upper part of the truck. In addition, when a specific level value is exceeded by the signal of the ultrasonic sensor 52 installed on the hopper gate 3, the discharge is stopped to determine the discharge completion.

The control flowchart being performed in the emission controller is shown in FIG. 5. Ensure that you are at the point where you want to discharge waste coke according to the level value in the hopper of waste coke. When it comes to the discharge time according to the level value, the central cab (60) transmits a message that the operator to discharge, and calls the truck required for the discharge. The arrival signal that the truck has arrived is known by the light sensor 51 installed at the bottom of the hopper, and thus shows a message that the discharge operation will start with the voice information and the warning light indication 58. Immediately, the gate 3 of the hopper is opened and the waste coke accumulated in the hopper in FIG. 3 accumulates in the truck. At this time, to operate the vibrating 53 is installed to improve the discharge flow, and also to blow hot steam to the upper hopper (57). In winter, the waste coke in the hopper is often frozen and it is difficult to discharge, but this problem is prevented by the operation of the heating device 54 installed around the hopper. When the discharge is completed is notified to the operator and the middle school cab 80 by the alarm sound and warning lights 58, and immediately closes the hopper gate (3) (Fig. 4).

According to the method of the present invention described above, there is an effect that the waste coke can be discharged automatically without clogging the hopper.

Claims (1)

Level measuring device 52 for automatically measuring the coke level in the hopper, heating device 54 for preventing the freezing of the hopper 4 in the winter, steam control device 57 installed to blow high temperature steam, hopper Moisture measuring device 55 for measuring the coke moisture in the coke, particle size measuring device 56 for automatically measuring the coke particle size in the hopper, vibrating 53 for preventing the clogging of the discharge gate during coke discharge in the hopper, discharge Infrared moisture measurement by configuring external sound device (58) for alarming the point of time, position monitoring device (59) for indicating the arrival and start time of the discharge truck, dispensing central operation unit (60) for remote control of all the above operations By measuring the moisture of the coke with the device 55, the temperature is controlled by the control of the heating device 54, and the coke particle size is measured by the laser particle size measuring device 56 to block the hopper when the waste coke is discharged. Hopper my lungs coke automatic dispensing method according to claim not to occur.

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