KR20030054322A - Constant Feed Weigher for Coke - Google Patents

Abstract

PURPOSE: An apparatus for automatically controlling circulation air volume of CDQ and feeding amount of coke is provided which uniformly maintains temperature inside chamber and constantly maintains feeding temperature and amount of coke at the same time by automatically controlling circulation air volume using air volume control dampers. CONSTITUTION: The apparatus includes a blasting unit(105) comprising a blasting head(105a) in which cross shaped equal dividing plates (a,b,c) are formed, a blasting body(105b), and a central current duct(105c) consisting four circulation gas supply pipes(7); an air volume control damper part comprising air volume control dampers(4a,4b,4c,4d) respectively installed on the four circulation gas supply pipes(7) of the central current duct(105c), and actuators(4a',4b',4c',4d') for operating the air volume control dampers(4a,4b,4c,4d); and a control part for controlling the air volume control dampers(4a,4b,4c,4d) and vibration feeder respectively by receiving temperature signals measured at lower temperature sensors and upper temperature sensors installed at the four sides of chamber, temperature signals by pyrometer, time signals by timer and signals of beltware installed on belt conveyor, wherein an opening ratio of the air volume control dampers(4a,4b,4c,4d) is in the range of 50 to 100%.

Description

CD Feed Circulation Air Flow Rate and Coke Cutting Capacity Automatic Control Device {Constant Feed Weigher for Coke}

The present invention relates to a device for uniformly adjusting and regulating the circulating air volume of a CDQ facility, and to constantly manage the amount of coke cutout, and more specifically, an upper side temperature sensor and a lower side temperature installed in four directions of the chamber. After calculating the average value from the temperature detection value of the sensor, the amount of circulation air flowing into the central flow of the chamber is constantly adjusted to maintain the four-way temperature of the chamber uniformly, thereby controlling the cutting temperature and the cutting amount of coke constant. The present invention relates to a CDQ circulating air volume and coke cutting amount automatic control device.

As shown in FIG. 1, in the related art, a circulating gas having passed through a sub-economizer 107 is divided into two parts, a peripheral flow 104 and a central flow 103, and the central flow 103 is supplied. When supplied to the air flows through the blasting device 105 between the coke 113 in the chamber 100 to cool the coke 113, and then through the Sloping Flue (101) hot gas Circulating as it exits the duct 102.

In the above process, the coke 113 in the chamber 100 is not uniformly cooled by the circulating gas supplied to the central flow 103, so that the temperature distribution of the chamber 100 is not uniform and the temperature change is severe. At the same time, when the cutting temperature increases, the temperature and pressure change in the circulation system is severe, which causes a problem of decreasing productivity.

The present invention has been made to improve the above-mentioned conventional problems, by using the lower temperature sensor and the upper temperature sensor installed in the chamber to automatically adjust the amount of circulation air flowing into the central flow by the air flow control damper temperature in the chamber It is an object of the present invention to provide a CDQ circulating air flow rate and coke extraction amount automatic control device that can maintain the uniformity of the coke while maintaining the cutting temperature and cutting amount of coke constant.

1 is an overall schematic diagram showing a conventional circulating gas flow

Figure 2a is an exploded perspective view showing the blasting device and the air flow control damper portion of the CDQ circulation air flow and coke cutting amount automatic control device of the present invention

FIG. 2B is a plan view of FIG. 2A

Figure 3 is an overall schematic diagram showing the CDQ circulating air volume and coke cutting amount automatic control device of the present invention

Figure 4 is a flow chart showing the operation of the CDQ circulating air flow rate and coke cutting amount automatic control device of the present invention

<Explanation of symbols for the main parts of the drawings>

4a, 4b, 4c, 4d: Air flow control damper 5: Control unit

100: chamber 105: blasting apparatus

105a: blasting head 105b: blasting body

105c: center flow duct 106: vibration feeder

109: radiation thermometer 111: belt conveyor

114: lower side temperature sensor 115: upper side temperature sensor

As a means for achieving the above object, the CDQ circulating air flow rate and the coke cutting amount automatic control device of the present invention, the center stream consisting of a blasting head and a blasting body and four circulating gas supply pipes each having the same cross-shaped partition plate therein A blasting device composed of a duct;

A wind volume control damper unit including an air volume control damper and an actuator for operating the air volume control dampers respectively installed in the four circulating gas supply pipes of the central flow duct;

Each temperature signal measured by the lower temperature sensor and the upper temperature sensor installed in the four directions of the chamber, the temperature signal by the radiation thermometer, the time signal by the timer, and the signal of the belt wear installed on the belt conveyor, respectively It characterized in that it comprises a control unit for controlling the air volume control damper and the vibration feeder, respectively.

In addition, the CDQ circulating air flow rate and the coke cutting amount automatic control device of the present invention is characterized in that the opening and closing range of the air volume control damper to 50 ~ 100%.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2a is an exploded perspective view showing the blasting device and the air volume control damper portion of the CDQ circulating air volume and the coke cut-off automatic control device of the present invention, Figure 2b is a plan view showing a 2b, Figure 3 is a CDQ circulating air volume and coke of the present invention As an overall schematic diagram showing a cut-off automatic adjusting device, as shown in the drawing, the CDQ circulating air flow rate and coke cut-off automatic adjusting device of the present invention are largely a control unit for controlling the blasting device unit, the air volume adjusting damper unit, and the air volume adjusting damper unit. It consists of.

The configuration is described in detail as follows.

The blasting apparatus 105 has a cylindrical blasting head 105a having a cross-shaped partition plate a formed therein, and a cylindrical partition plate b having the same cross-shaped partition plate b formed therein. Shaped blasting body 105b, and the same partition plate (c) and the partition plate (a, b) is composed of a central flow duct 105c is installed in the center to partition the four circulating gas supply pipe (7) Thus, the circulating gas can be supplied in four directions by the partition plates (a, b, c).

The air volume control damper unit, the air flow control dampers (4a, 4b, 4c, 4d) provided in each of the four circulating gas supply pipe (7) of the central flow duct 105c and the actuator (4a) for operating the air flow control damper respectively ', 4b', 4c ', 4d').

As shown in FIG. 3, the control unit 5 for controlling the air volume control damper unit is measured by a lower side temperature sensor 114 provided at a lower portion of the chamber 100 and an upper side temperature sensor 115 respectively provided at an upper portion thereof. Temperature signal, the temperature signal by the radiation thermometer 109 installed on the belt conveyor 111, the elapsed time signal by the timer T for checking the time when the coke is cut out, and the belt installed on the belt conveyor 111 Receives the signal of the wear 110, respectively, and configured to control the air volume control dampers (4a, 4b, 4c, 4d), respectively.

Next, the combination of the CDQ circulating air flow rate and the coke cutting amount automatic control device of the present invention having the above-described configuration will be described with reference to FIG. 2A.

First, a blasting body 105b is coupled to a lower portion of the blasting head 105a, and a central flow duct 105c is coupled to a lower portion of the blasting body 105b.

The partition plate (a) formed inside the blasting head (105a), the partition plate (b) formed inside the blasting body (105b) and the partition plate (c) formed in the central flow duct 105c at the time of the coupling Are all matched in the same direction.

Subsequently, the four circulating gas supply pipes 7 formed in the central flow duct 105c are respectively provided with air volume control dampers 4a, 4b, 4c and 4d operated by actuators 4a ', 4b', 4c 'and 4d'. Install).

Hereinafter, referring to FIGS. 3 and 4, the operation of the CDQ circulating air flow rate and the coke cutting amount automatic control device of the present invention will be described.

When the driver sets the coke cut-off amount in the DCS 112 (shown in FIG. 1) and then performs the cut-off start, the belt conveyor 111 of the cut-out part is started to rotate the rotary seal valve. 108 rotates, and the vibration feeder 106 starts discharging by the set amount of coke cutout.

At this time, the timer T checks the time, and when a predetermined time elapses, the timer T transmits time information to the controller 5, and the controller 5 is a lower side temperature sensor installed in four directions of the chamber 100. 114 and the upper and lower temperatures of the chamber 100 detected by the upper temperature sensor 115 to calculate the average value and then compare the temperature for each part by comparing the air volume control dampers (4a, 4b, 4c, The operation instruction is sent to 4d).

Accordingly, the air volume control damper at the lower temperature among the air volume control dampers 4a, 4b, 4c, and 4d is adjusted in the cross (close) direction, and the air volume control damper at the high temperature is open (open) direction. Is adjusted.

At this time, the opening and closing operation range of the air volume control dampers (4a, 4b, 4c, 4d) is operated between 50 ~ 100%. That is, the initial state of the air volume control damper is in a state in which 50% of the inside of the circulating gas supply pipe 7 is opened. Therefore, even when the airflow control damper is completely closed, only 50% of the circulating gas supply pipe 7 is opened while 50% of the inside of the circulating gas supply pipe 7 is opened.

Subsequently, the coke cutting temperature signal detected by the radiation thermometer 109 provided on the belt conveyor 111 is transmitted to the control unit 5 according to the signal of the timer T, and the control unit 5 having received the same is received. When the coke cutting temperature detected by the radiation thermometer (109) is 200 ° C. or more, a coke cutting amount down instruction (signal for reducing coke discharge) is sent to the vibration feeder 106 to determine the coke cutting amount. Instructing the down, if the temperature is less than 200 ℃ proceeds to achieve the current operating state.

As described above, the temperature inside the chamber is uniformly managed by the CDQ circulating air volume and the coke cutting amount automatic control device of the present invention, and the discharge temperature of the coke discharged is also managed constantly to maintain the temperature and pressure in the circulation system constantly. As a result, it is possible to increase the production of steam and electric power per ton of coke, to increase the life of the equipment by preventing premature wear of the cutting equipment, and to supply good quality coke to the blast furnace due to the stabilization of the coke quality. have.

Claims (2)

A blasting apparatus comprising a blasting head 105a and a blasting body 105b and four circulating gas supply pipes 7 formed therein, each having the same partition plate a, b, c having a cross shape therein. 105; Air flow control dampers 4a, 4b, 4c and 4d respectively provided in the four circulating gas supply pipes 7 of the central flow duct 105c and actuators 4a ', 4b' and 4c for operating the air flow control dampers, respectively. ', 4d') air volume control damper portion; Each temperature signal measured by the lower side temperature sensor 114 and the upper side temperature sensor 115 installed in the four directions of the chamber 100, the temperature signal by the radiation thermometer 109, the time signal by the timer T And, and receives the signals of the belt wear 110 installed in the belt conveyor 111, respectively, the control unit (5) for controlling the air volume control dampers (4a, 4b, 4c, 4d) and the vibration feeder 106, respectively CDQ circulating air volume and coke cutting amount automatic control device, characterized in that made. The apparatus of claim 1, wherein the opening and closing range of the air volume control dampers (4a, 4b, 4c, 4d) is 50 to 100%.