KR100928791B1 - Automatic setting method of pulverized coal recharge amount of pulverized coal rewarding facility - Google Patents

Automatic setting method of pulverized coal recharge amount of pulverized coal rewarding facility Download PDF

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KR100928791B1
KR100928791B1 KR1020030023621A KR20030023621A KR100928791B1 KR 100928791 B1 KR100928791 B1 KR 100928791B1 KR 1020030023621 A KR1020030023621 A KR 1020030023621A KR 20030023621 A KR20030023621 A KR 20030023621A KR 100928791 B1 KR100928791 B1 KR 100928791B1
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pulverized coal
amount
compensation
facility
coal
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KR20040089811A (en
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문유환
백종문
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주식회사 포스코
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E04F15/203—Separately-laid layers for sound insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise

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Abstract

본 발명은 고로로 취입되는 미분탄의 재고량을 일정하게 유지하기 위해서 미분탄 보상량을 자동으로 설정하여 보상하는 미분탄 보상설비의 미분탄 보상량 자동 설정 방법에 관한 것이다.

본 발명은 상기 미분탄 제조설비의 동작이 개시되면, 미분탄 취입설비에서 미분탄 저장호퍼 및 다수의 미분탄 취입호퍼내 미분탄 중량을 검출하고 이를 합산하여 현재 미분탄 재고량을 연산하는 단계; 상기 현재 미분탄 재고량을 미분탄 재고량 설정값과 비교하여 미분탄 재고량 편차를 연산하는 단계; 미분탄 제조과정에서 급탄량 설정값과 미분탄 취입량을 비교하여 미분탄 취입량 편차를 연산하는 단계; 상기 미분탄 재고량 편차와 상기 미분탄 취입량 편차를 합산하여 미분탄 보상량을 산출하는 단계; 상기 산출된 미분탄 보상량을 상기 미분탄 보상설비의 미분탄 보상량 설정값으로 설정하여 상기 보상설비로부터 미분탄 취입설비로 미분탄을 보상하는 단계로 이루어진다.

이러한 본 발명의 방법에 의하면, 본 발명은 취입설비의 안정화, 용선 생산량의 증가 및 원가절감 등의 효과가 있다.

Figure R1020030023621

미분탄, 제조설비, 취입설비, 보상설비, 보상호퍼, 파쇄기, 백필터

The present invention relates to a method for automatically setting a pulverized coal recharge amount of a pulverized coal rewarding facility that automatically sets and compensates for a pulverized coal recharge amount in order to maintain a constant amount of pulverized coal to be blasted into a blast furnace.

The present invention relates to a method for controlling the operation of a pulverized coal manufacturing facility, comprising the steps of: detecting the pulverized coal weight in a pulverized coal storage hopper and a plurality of pulverized coal receiving hoppers in a pulverized coal receiving facility; Comparing the current pulverized coal inventory quantity with a pulverized coal inventory quantity set value to calculate a pulverized coal inventory quantity deviation; Calculating a pulverized coal blowing amount variation by comparing a coal set amount and a pulverized coal blowing amount in a pulverized coal manufacturing process; Calculating a pulverized coal recharge amount by summing the pulverized coal inventory amount deviation and the pulverized coal blown amount deviation; The calculated pulverized coal compensation amount is set as the pulverized coal compensation amount set value of the pulverized coal grinder, and the pulverized coal is compensated from the compensation plant to the pulverized coal inlet facility.

According to the method of the present invention, the present invention has the effect of stabilizing the blowing facility, increasing the amount of the boiler production, and reducing the cost.

Figure R1020030023621

Pulverized coal, manufacturing equipment, blowing equipment, compensation equipment, compensation hopper, crusher, bag filter

Description

미분탄 보상설비의 미분탄 보상량 자동 설정 방법{AN METHOD FOR DETERMINING AUTOMATICALLY PULVERIZED COAL SUPPLEMENTARY QUANTITY}TECHNICAL FIELD [0001] The present invention relates to a method for automatically setting a pulverized coal re-

도1은 일반적인 미분탄 제조설비 및 미분탄 취입설비의 구성도이다.1 is a block diagram of a general pulverized coal manufacturing facility and a pulverized coal blowing facility.

도2는 도1에 종래 미분탄 보상설비가 추가된 구성도이다.FIG. 2 is a schematic view of the conventional pulverized coal recovery system in FIG. 1.

도3은 본 발명에 의한 미분탄 보상설비에서 보상량 설정값 산출부의 구성도이다.3 is a configuration diagram of a compensation amount set value calculation unit in the pulverized coal grinding facility according to the present invention.

도4는 본 발명에 의한 미분탄 보상설비에서 보상량 설정값 산출부의 상세 구성도이다.4 is a detailed configuration diagram of a compensation amount set value calculation unit in the pulverized coal grinder according to the present invention.

도5는 본 발명에 의한 미분탄 보상설비에서 보상량 설정값 산출부의 동작을 나타낸 플로우차트이다.5 is a flowchart showing the operation of the compensation amount set value calculation unit in the pulverized coal grinder according to the present invention.

*도면의 주요부분에 대한 부호의 설명*Description of the Related Art [0002]

10: 로직소자부 25: 급탄량설정기10: Logic element part 25: Charge amount setting device

20,30: 미분탄 제조설비 40: 미분탄 취입설비20,30: Pulverized coal production facility 40: Pulverized coal injection plant

50: 미분탄 보상설비 70: 미분탄 보상량 산출부50: Pulverized coal recovery plant 70: Pulverized coal recovery plant

71, 72,76: 합산기 73: 미분탄 재고량 편차연산기71, 72, 76: Totalizer 73: Pulverized coal inventory deviation calculator

74: 취입량설정기 75: 미분탄 취입량 편차연산기
74: blow-in amount setting device 75: pulverized coal blow-

본 발명은 미분탄 보상설비의 미분탄 보상량을 자동으로 설정하는 방법에 관한 것으로, 보다 상세하게는 미분탄 취입설비의 미분탄 재고량을 일정하게 유지하기 위해 제공되는 미분탄 보상량을 미분탄 제조량과 취입량 간의 편차, 현재 재고량과 설정된 재고량 간의 편차를 이용해 산출하는 미분탄 보상설비의 미분탄 보상량 자동 설정 방법에 관한 것이다.The present invention relates to a method of automatically setting a pulverized coal compensation amount of a pulverized coal charging facility, and more particularly, to a method of automatically setting a pulverized coal loading amount of a pulverized coal loading plant, The present invention relates to a method for automatically setting a pulverized coal recharge amount of a pulverized coal rewarding facility, which is calculated by using a deviation between a current stock amount and an established stock amount.

도1은 일반적인 미분탄 제조설비 및 미분탄 취입설비의 구성도로서, 도1을 참조하여 미분탄 제조설비(20,30)에서 제조된 미분탄이 고로로 취입되는 일련의 과정을 설명한다. 상기 미분탄 제조설비는 석탄을 미분탄으로 제조하는 설비로서 다수의 설치가 가능하므로, 이하 제1미분탄 제조설비(20)를 대표하여 설명한다.FIG. 1 is a block diagram of a conventional pulverized coal manufacturing facility and a pulverized coal blowing facility. Referring to FIG. 1, a series of pulverized coal produced in the pulverized coal manufacturing plants 20 and 30 is introduced into the blast furnace. The above-mentioned pulverized coal manufacturing facility is a facility for manufacturing coal into pulverized coal, and a plurality of pulverized coal making facilities can be installed.

석탄 야적장에서 컨베이어벨트에 의해 운반된 석탄은 석탄 저장호퍼(21)에 저장된다. 상기 석탄저장호퍼(21)에 저장된 석탄은 급탄량설정기(25)에 의해 설정된 급탄량만큼 급탄기(22)를 통해 파쇄기(23)로 급탄된다. 상기 파쇄기(23)로 급탄된 석탄은 롤(23a,23b)에 의해 파쇄되어 미분탄으로 제조된다. 상기 파쇄기(23)에서 제조된 미분탄은 다량의 수분을 포함하고 있기 때문에, 횐(28)에 의해 흡입된 열풍으로 건조되며, 건조된 미분탄은 열풍을 이용해 백필터(42)로 이송된다. 상기 파쇄기(23)로 공급되는 열풍의 유량에 따라 파쇄기(23) 출구의 온도가 변화하므로, 열풍유량제어기(29)는 설정된 파쇄기 출구 온도에 따라 상기 파쇄기(23)로 공급되는 열풍의 유량을 제어한다. The coal carried by the conveyor belt in the coal yard is stored in the coal storage hopper 21. The coal stored in the coal storage hopper 21 is discharged to the crusher 23 through the charger 22 by the amount of the charcoal set by the char combustion amount setter 25. [ Coal burnt by the crusher 23 is crushed by the rolls 23a and 23b to be made of pulverized coal. Since the pulverized coal produced in the pulverizer 23 contains a large amount of moisture, the pulverized coal is dried by hot air sucked by the pulverizer 28, and the dried pulverized coal is transferred to the bag filter 42 by hot air. The temperature of the outlet of the crusher 23 changes according to the flow rate of hot air supplied to the crusher 23 so that the hot air flow rate controller 29 controls the flow rate of hot air supplied to the crusher 23 according to the set crusher outlet temperature do.

보다 상세하게, 상기 열풍유량제어기(29)는 파쇄기 출구의 온도를 소정의 범위로 제한하기 위해서, 상기 파쇄기(23) 출구에 설치된 온도검출기(24)의 온도 검출값과 온도 설정값을 비교하여 그 편차만큼 냉풍유량제어밸브(26) 및 열풍유량제어밸브(27)의 개도를 조절하여 파쇄기 출구의 온도를 제어한다.More specifically, the hot air flow rate controller 29 compares the temperature detection value of the temperature detector 24 provided at the outlet of the crusher 23 with the temperature set value to limit the temperature of the crusher outlet to a predetermined range, The opening degree of the cold air flow control valve 26 and the hot air flow control valve 27 is adjusted by the deviation to control the temperature of the crusher outlet.

상기와 같이 미분탄 제조설비(20)에서 제조된 미분탄은 미분탄 취입설비(40)의 백필터(42)로 열풍에 의해 이송된다. 상기 백필터(42)에서 미분탄은 포집되고, 열풍은 대기방산밸브(44)를 통해 대기 중으로 방산된다. 상기 백필터(42)에서 포집된 미분탄은 미분탄 저장호퍼(45)에 모아진 후, 다수의 미분탄 취입호퍼(46~48)를 거쳐 고로로 취입된다.
As described above, the pulverized coal produced in the pulverized coal manufacturing facility 20 is transferred to the bag filter 42 of the pulverized coal blowing facility 40 by hot air. The pulverized coal is collected in the bag filter (42), and hot air is dissipated into the atmosphere through an air release valve (44). The pulverized coal collected in the bag filter 42 is collected in a pulverized coal storage hopper 45 and then blown into a blast furnace through a plurality of pulverized coal receiving hoppers 46 to 48.

미분탄은 고로로 연속적으로 취입되기 때문에, 미분탄 저장호퍼(45)내 미분탄 재고량은 충분히 확보되어야 한다. 그러나 미분탄 제조설비 운전 중, 상기 파쇄기(23)의 성능이 저하되어 미분탄 제조량이 감소하거나 고로로 취입되는 미분탄 취입량이 증가하면, 상기 미분탄 저장호퍼(45)내 미분탄 재고량이 감소되어 설비의 마모 및 생산량 감소의 문제가 발생한다. Since the pulverized coal is continuously blown into the blast furnace, the pulverized coal inventory in the pulverized coal storage hopper 45 should be sufficiently secured. However, if the performance of the crusher 23 is lowered and the amount of pulverized coal to be produced decreases or the amount of pulverized coal blown into the blast furnace increases during operation of the pulverized coal manufacturing facility, the amount of pulverized coal stock in the pulverized coal storage hopper 45 decreases, A problem of reduction occurs.

상기와 같은 문제점을 방지하기 위해서, 도2에 도시된 바와 같이 미분탄 보상설비를 설치한다. 상기 미분탄 보상설비(50)는 미분탄의 여유분이 있는 타설비로 부터 보상호퍼(52,53)로 미분탄을 공급받아 상기 미분탄 취입설비(40)의 백필터(41,42)로 미분탄을 취입하는 설비로서, 도2를 참조하여 설명한다.In order to prevent the above-described problems, a pulverizing coal recovery facility is installed as shown in FIG. The pulverizing and collecting facility 50 is a facility for supplying pulverized coal to the compensating hoppers 52 and 53 from other facilities having spare parts of the pulverized coal and blowing pulverized coal into the bag filters 41 and 42 of the pulverized coal receiving facility 40 Will be described with reference to Fig.

상기 미분탄 보상호퍼(52,53)에 미분탄이 충진되면, 보상편차 연산기(62)는 보상량설정기(61)의 보상설정량과 상기 보상호퍼(52,53)의 중량을 비교하여 보상편차를 연산하여 보상량제어기(63)로 출력한다. 상기 보상량제어기(63)는 상기 보상량설정기(61)의 보상설정량과 보상편차 연산기(62)의 보상편차를 합산하여, 합산된 보상량만큼 상기 백필터(41,42)로 미분탄이 취입될 수 있도록 가압 에어 제어밸브(56) 및 배압에어 제어밸브(54)의 개도를 조절하여 상기 보상호퍼(52,53)의 압력을 제어한다. 가압이 완료된 보상호퍼(52,53)는 로직소자부(10)가 온(On)될 때까지 대기하다가 상기 로직소자부(10)가 온(On) 되면 보상에어컴퓨레셔(57)를 통해 공급되는 보상에어를 통해 미분탄을 상기 백필터(41,42)로 취입한다. 상기 보상에어는 보상에어설정기(64)에서 설정된 에어량만큼 보상에어 유량제어기(65)가 보상에어 제어밸브(58)를 제어함으로써 공급된다.When the pulverized coal-compensated hoppers 52 and 53 are filled with pulverized coal, the compensation deviation calculator 62 compares the compensation set amount of the compensation amount setter 61 with the weight of the compensation hoppers 52 and 53, And outputs it to the compensation amount controller 63. The compensation amount controller 63 adds up the compensation set amount of the compensation amount setter 61 and the compensation deviation of the compensation deviation calculation unit 62 and outputs pulverized coal to the bag filters 41 and 42 And controls the opening of the pressurized air control valve 56 and the back pressure air control valve 54 so that the pressure of the compensating hoppers 52 and 53 can be controlled. When the logic element 10 is turned on, the compensating hoppers 52 and 53 wait until the logic element 10 is turned on. The pulverized coal is blown into the bag filters 41 and 42 through the compensation air. The compensation air is supplied to the compensation by controlling the compensating air flow controller 65 by the compensation air flow control valve 58 by the amount of air set in the adjusting mechanism 64. [

상기 미분탄 보상설비(50)로부터 상기 백필터(41,42)로 미분탄이 취입되기 위해서는 로직소자부(10)의 보상조건을 만족해야 한다. 상기 로직소자부(10)가 온 되기 위한 제1보상조건은 상기 백필터(41,42)의 대기방산밸브(43,44)가 오픈되고, 진동발생기(41a,42a)가 런(Run)되고, 보상차단밸브(67,68)가 오픈되어, 제3로직소자(3)도 온 되는 것이다. 또한, 제2보상조건은 상기 보상호퍼(52,53)가 가압이 완료되어 대기하고, 이상신호가 발생되지 않아서 제4로직소자(4)도 온 되는 것이다. 제1보상조건 및 제2보상조건을 만족한 상태에서 운전자가 보상개시신호(9a)를 누르게 되면, 제6로직소자(6)가 온 되어 전체 로직소자부(10)는 온(On) 된다.In order to receive the pulverized coal from the pulverizing coal recovery facility 50 into the bag filters 41 and 42, the compensation condition of the logic element unit 10 must be satisfied. The first compensation condition for turning on the logic element part 10 is that the atmospheric release valves 43 and 44 of the bag filters 41 and 42 are opened and the vibration generators 41a and 42a are run , The compensation shutoff valves 67 and 68 are opened and the third logic element 3 is also turned on. In addition, the second compensation condition is that the compensation hoppers 52 and 53 wait for completion of the pressurization, and no abnormality signal is generated, so that the fourth logic element 4 is also turned on. When the driver presses the compensation start signal 9a in a state where the first compensation condition and the second compensation condition are satisfied, the sixth logic device 6 is turned on and the entire logic device unit 10 is turned on.

그러나 상기와 같은 미분탄 보상설비(50)의 운전은 운전자가 수동으로 미분탄 보상량을 설정하고 수동으로 보상시점을 판단함으로써, 미분탄 보상량이 운전자에 따라 다르게 제어되어 미분탄 재고량이 운전자에 관계없이 일정하게 유지되기는 어렵다.However, in the operation of the above-described pulverizing and collecting facility 50, the pulverizer compensation amount is controlled differently according to the driver by manually setting the pulverized coal compensation amount and manually determining the compensation time point so that the pulverized coal stock amount is kept constant regardless of the driver It is difficult to be.

본 발명은 상기와 같은 종래의 문제점을 해소하기 위한 것으로, 그 목적은 고로로 연속적으로 취입되는 미분탄의 재고량을 일정하게 유지하기 위해서 보상되는 미분탄 보상량을 자동으로 설정하는 미분탄 보상설비의 미분탄 보상량 자동 설정 방법을 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a pulverized coal recovery system for automatically setting a pulverized coal compensation amount to maintain a constant amount of pulverized coal continuously blown into a blast furnace, And provides an automatic setting method.

상기한 본 발명의 목적을 달성하기 위한 수단으로서, 본 발명의 방법은 석탄을 파쇄하여 미분탄을 제조하는 미분탄 제조설비와, 상기 미분탄 제조설비로부터 제조된 미분탄을 고로에 취입하는 미분탄 취입설비와, 상기 미분탄 취입설비의 연속 취입이 가능하도록 미분탄 취입설비의 미분탄 재고량을 보상하는 미분탄 보상설비를 구비한 미분탄 보상설비의 미분탄 보상량 자동 설정방법에 있어서,As a means for achieving the object of the present invention, the method of the present invention comprises a pulverized coal manufacturing facility for producing pulverized coal by pulverizing coal, a pulverized coal blowing plant for pulverizing the pulverized coal produced from the pulverized coal manufacturing plant into a blast furnace, A method for automatic setting of the pulverized coal recharge amount of a pulverized coal grinding machine equipped with a pulverized coal grinding machine for compensating for the pulverized coal inventory of the pulverized coal blowing machine so that continuous pulverization of the pulverized coal blowing facility is possible,

상기 미분탄 제조설비의 동작이 개시되면, 미분탄 취입설비에서 미분탄 저장호퍼 및 다수의 미분탄 취입호퍼내 미분탄 중량을 검출하고 이를 합산하여 현재 미분탄 재고량을 연산하는 단계; Detecting the pulverized coal weight in the pulverized coal storage hopper and the plurality of pulverized coal receiving hoppers at the pulverized coal receiving facility when the operation of the pulverized coal manufacturing facility is started,                     

상기 현재 미분탄 재고량을 미분탄 재고량 설정값과 비교하여 미분탄 재고량 편차를 연산하는 단계;Comparing the current pulverized coal inventory quantity with a pulverized coal inventory quantity set value to calculate a pulverized coal inventory quantity deviation;

미분탄 제조과정에서 급탄량 설정값과 미분탄 취입량을 비교하여 미분탄 취입량 편차를 연산하는 단계;Calculating a pulverized coal blowing amount variation by comparing a coal set amount and a pulverized coal blowing amount in a pulverized coal manufacturing process;

상기 미분탄 재고량 편차와 상기 미분탄 취입량 편차를 합산하여 미분탄 보상량을 산출하는 단계; 및Calculating a pulverized coal recharge amount by summing the pulverized coal inventory amount deviation and the pulverized coal blown amount deviation; And

상기 산출된 미분탄 보상량을 상기 미분탄 보상설비의 미분탄 보상량 설정값으로 설정하여 상기 보상설비로부터 미분탄 취입설비로 미분탄을 보상하는 단계Setting the calculated pulverized coal compensation amount to a pulverized coal compensation amount set value of the pulverized coal grinder and compensating the pulverized coal from the compensation plant to the pulverized coal inlet facility

로 이루어짐을 특징으로 한다.
. ≪ / RTI >

이하, 본 발명에 따른 미분탄 보상설비의 미분탄 보상량 자동 설정 방법은 첨부한 도면을 참조하여 상세하게 설명한다. 본 발명의 참조된 도면에서 실질적으로 동일한 구성 및 기능을 갖는 구성요소들은 동일한 부호를 사용할 것이다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of automatically setting a pulverized coal compensation amount of a pulverizer according to the present invention will be described in detail with reference to the accompanying drawings. In the referenced drawings of the present invention, components having substantially the same configuration and function will use the same reference numerals.

도3은 본 발명에 의한 미분탄 보상설비 및 미분탄 보상량 산출부의 구성도로서, 이하, 도3을 참조하여 본 발명의 방법을 설명하는데 필요한 장치들의 구성 및 작용에 대해 설명한다.FIG. 3 is a block diagram of a pulverized coal loss compensation facility and a pulverized coal loss compensation amount calculation unit according to the present invention. The construction and operation of the apparatuses necessary for explaining the method of the present invention will be described below with reference to FIG.

석탄 야적장에서 컨베이어벨트에 의해 운반된 석탄은 석탄 저장호퍼(21)에 저장된다. 상기 석탄저장호퍼(21)에 저장된 석탄은 급탄량설정기(25)에 의해 설정된 급탄량만큼 급탄기(22)를 통해 파쇄기(23)로 급탄된다. 상기 파쇄기(23)의 석탄 은 롤(23a,23b)에 의해 파쇄되어 미분탄으로 제조되고, 제조된 미분탄은 열풍(도시생략)에 의해 백필터(41,42)로 이송된다. 상기 백필터(41,42)에서 미분탄은 포집되고, 열풍은 대기방산밸브(43,44)를 통해 대기 중으로 방산된다. 상기 백필터(41,42)에서 포집된 미분탄은 미분탄 저장호퍼(45)에 모아진 후, 다수의 미분탄 취입호퍼(46~48)를 거쳐 고로로 취입된다.The coal carried by the conveyor belt in the coal yard is stored in the coal storage hopper 21. The coal stored in the coal storage hopper 21 is discharged to the crusher 23 through the charger 22 by the amount of the charcoal set by the char combustion amount setter 25. [ The coal of the crusher 23 is crushed by the rolls 23a and 23b to be made of pulverized coal and the pulverized coal produced is conveyed to the bag filters 41 and 42 by hot air (not shown). The pulverized coal is collected in the bag filters 41 and 42, and hot air is dissipated through the atmospheric release valves 43 and 44 to the atmosphere. The pulverized coal collected in the bag filters 41 and 42 is collected in the pulverized coal storage hopper 45 and then blown into the blast furnace through a plurality of pulverized coal receiving hoppers 46 to 48.

고로로 미분탄이 연속적으로 취입되기 때문에, 상기 미분탄 저장호퍼(45)내 미분탄 재고량은 충분히 확보되어야 한다. 그러나 미분탄 제조설비 운전 중, 상기 파쇄기(23)의 성능이 저하되어 미분탄 제조량이 감소하거나 고로로 취입되는 미분탄 취입량이 증가하면, 상기 미분탄 저장호퍼(45)내 미분탄 재고량이 감소되어 설비의 마모 및 생산량 감소의 문제가 발생된다. Since the pulverized coal is continuously blown into the blast furnace, the pulverized coal inventory in the pulverized coal storage hopper 45 should be sufficiently secured. However, if the performance of the crusher 23 is lowered and the amount of pulverized coal to be produced decreases or the amount of pulverized coal blown into the blast furnace increases during operation of the pulverized coal manufacturing facility, the amount of pulverized coal stock in the pulverized coal storage hopper 45 decreases, A problem of reduction occurs.

상기와 같은 문제점을 방지하기 위해서, 미분탄 보상설비(50)가 설치되는데, 상기 미분탄 보상설비(50)는 미분탄의 여유분이 있는 타설비로부터 보상호퍼(52,53)로 미분탄을 공급받아, 제1보상량설정기(61) 또는 제2보상량설정기(61a)에서 설정된 미분탄 보상량만큼 상기 백필터(41,42)로 미분탄을 보상함으로써, 상기 미분탄 저장호퍼(45)내 미분탄 재고량을 일정하게 유지시킨다. 보다 상세하게, 운전자가 보상모드 선택스위치(66)의 스위치를 수동으로 하면 제1보상량설정기(61)의 보상량 설정값이 보상량제어기(63)로 출력되고, 자동으로 하면 제2보상량설정기(61a)의 보상량 설정값이 상기 보상량제어기(63)로 출력된다. 상기 제2보상량설정기(61a)에 설정되는 보상량 설정값은 미분탄 보상량 산출부(70)에서 연산된 보상량이 입력된 것이다.In order to prevent the above problems, a pulverized coal grinding facility 50 is installed. The pulverized coal grinding facility 50 receives pulverized coal from the other facilities having spare powders of pulverized coal to the compensating hoppers 52 and 53, The pulverized coal is compensated by the bag filters 41 and 42 by the amount of pulverized coal set by the compensation amount setter 61 or the second compensated amount setter 61a so that the pulverized coal inventory amount in the pulverized coal storage hopper 45 is made constant . More specifically, when the driver manually turns on the switch of the compensation mode selection switch 66, the compensation amount set value of the first compensation amount setter 61 is outputted to the compensation amount controller 63, The compensation amount set value of the quantity setting device 61a is output to the compensation amount controller 63. [ The compensation amount set value set in the second compensation amount setter 61a is the compensation amount calculated in the pulverized coal compensation amount calculation unit 70. [

상기 보상량제어기(63)는 입력된 미분탄 보상량만큼 미분탄이 보상되도록, 가압에어 제어밸브(56) 및 배압에어 제어밸브(54)의 개도를 조절하여 상기 보상호퍼(52,53)의 압력을 제어한다. 상기 보상량제어기(63)에 의해 가압이 완료된 보상호퍼(52,53)는 로직소자부(10)가 온(On) 될 때까지 대기하다가 상기 로직소자부(10)가 온(On) 되면 보상에어컴퓨레셔(57)를 통해 공급되는 보상에어를 통해 미분탄을 상기 백필터(41,42)로 취입한다. 상기 보상에어는 보상에어설정기(64)에서 설정된 에어량만큼 보상에어 유량제어기(65)가 보상에어 제어밸브(58)를 제어함으로써 공급된다.The compensation amount controller 63 adjusts the opening degree of the pressurized air control valve 56 and the back pressure air control valve 54 so that the pulverized coal is compensated by the input pulverized coal compensation amount to adjust the pressure of the compensating hoppers 52 and 53 . The compensation hoppers 52 and 53 that have been pressed by the compensation amount controller 63 wait until the logic element unit 10 is turned on and when the logic element unit 10 is turned on, And the pulverized coal is blown into the bag filters 41 and through the compensation air supplied through the air compressor (57). The compensation air is supplied to the compensation by controlling the compensating air flow controller 65 by the compensation air flow control valve 58 by the amount of air set in the adjusting mechanism 64. [

상기 서술한 바와 같이, 대기중인 보상호퍼(52,53)가 상기 미분탄 취입설비(40)로 미분탄을 이송하기 위해서는 로직소자부(10)가 온(On) 되어야 한다. 상기 로직소자부(10)가 온 되기 위해서는 제1,2보상조건을 만족해야 한다. 상기 제1보상조건은 상기 백필터(41,42)의 대기방산밸브(43,44)가 오픈(Open)되고, 진동발생기(41a,42a)가 런(Run)되고, 보상차단밸브(67,68)가 오픈되는 것이며, 제1보상조건이 만족되면 제1,2로직소자(1,2)가 온 되어 제3로직소자(3)가 온 된다. 또한, 제2보상조건은 상기 보상호퍼(52,53)가 가압이 완료되어 대기중이면서 이상신호가 발생되지 않는 것으로, 상기 제2보상조건이 만족되면 제4로직소자(4)가 온 되어 제5로직소자(5)가 온 된다. 여기서, 운전자가 보상개시신호(9a)를 누르게 되면 제6로직소자(6)가 온 되어, 상기 로직소자부(10)가 온(On) 된다. 이로써, 제1,2보상조건이 만족되고, 상기 미분탄 보상설비(50)는 미분탄 보상량 설정값에 따라 미분탄을 상기 미분탄 취입설비(40)로 취입하게 된다. 여기서, 미분탄 보상량은 미분탄 보상량 산출부(70)에 의해 결정된다. As described above, in order that the standby compensating hoppers 52 and 53 transfer pulverized coal to the pulverized coal blowing facility 40, the logic element unit 10 must be turned on. In order for the logic element portion 10 to be turned on, the first and second compensation conditions must be satisfied. The first compensation condition is established when the atmospheric release valves 43 and 44 of the bag filters 41 and 42 are opened and the vibration generators 41a and 42a are run and the compensation shutoff valves 67 and 67 are opened, 68 are opened. When the first compensation condition is satisfied, the first and second logic elements 1, 2 are turned on and the third logic element 3 is turned on. In addition, the second compensation condition is that the compensating hoppers 52 and 53 are in the standby state after the pressurization is completed and an abnormal signal is not generated. When the second compensation condition is satisfied, the fourth logic element 4 is turned on 5 Logic element 5 is turned on. Here, when the driver presses the compensation start signal 9a, the sixth logic element 6 is turned on and the logic element portion 10 is turned on. Thus, the first and second compensation conditions are satisfied, and the pulverizing coal recovery facility 50 blows the pulverized coal into the pulverized coal receiving facility 40 according to the pulverized coal compensation amount set value. Here, the pulverized coal compensation amount is determined by the pulverized coal compensation amount calculation unit 70. [

도4는 본 발명에 의한 미분탄 보상설비에서 보상량 설정값 산출부의 상세 구성도로서, 도4를 참조하여 상기 미분탄 보상량 산출부(70)의 구성을 살펴보면, 상기 미분탄 보상량 산출부(70)는 다수의 취입호퍼(46~48)의 중량을 합산하는 제1합산기(71)와, 상기 제1합산기(71)의 중량과 미분탄 저장호퍼(45)의 중량을 합산하여 미분탄 재고량을 산출하는 제2합산기(72)와, 상기 제2합산기(72)의 미분탄 재고량 검출값과 설정된 미분탄 재고량 설정값 간의 편차를 연산하는 미분탄 재고량 편차연산기(73)와, 미분탄 제조설비(20)에서 미분탄 취입설비(40)로 공급되는 미분탄 취입량을 설정하는 취입량설정기(74)와, 상기 취입량설정기(74)의 취입량 설정값과 운전자에 의해 설정된 급탄량 설정값 간의 편차를 연산하는 미분탄 취입량 편차연산기(75)와, 상기 미분탄 재고량 편차연산기(73)의 미분탄 재고량 편차와 미분탄 취입량 편차연산기(75)의 미분탄 취입량 편차를 합산하여 미분탄 보상량으로 산출하는 제3합산기(76)로 구성된다.Referring to FIG. 4, the pulverized coal compensation amount calculation unit 70 calculates the compensation amount set value in the pulverized coal compensation amount calculating unit 70 according to the present invention. A first summing unit 71 for summing the weights of the plurality of blowing hoppers 46 to 48 and a weight of the first summing unit 71 and the weight of the pulverized coal storage hopper 45 to calculate the pulverized coal inventory amount (73) for calculating a deviation between the pulverized coal inventory value detected by the second totalizer (72) and the set pulverized coal inventory set value, and a second pulverizer A difference between a take-in amount set value of the take-in amount setter 74 and a steadiness amount set value set by the driver is calculated (75) for calculating a pulverized coal intake amount deviation computing unit Summing the coal injection amount deviation computing unit 73, pulverized coal inventory deviation and coal injection amount deviation computing unit 75 of the is composed of a third adder (76) for calculating a compensation amount of pulverized coal.

상기 서술한 바와 같이, 상기 미분탄 보상설비(50)는 제1,2보상조건이 만족되고, 상기 미분탄 보상량 산출부(70)로부터 미분탄 보상량이 입력되면 보상운전을 개시한다. 도5는 상기 제1,2보상조건 및 미분탄 보상량 산출부(70)의 동작을 나타낸 플로우차트로서, 도5를 참조하여 본 발명의 미분탄 보상설비(50)의 미분탄 보상량 자동 설정 방법을 설명한다. As described above, when the first and second compensation conditions are satisfied and the pulverized coal compensation amount is input from the pulverized coal compensation amount calculation unit 70, the pulverized coal recovery facility 50 starts the compensation operation. 5 is a flowchart showing the operation of the first and second compensation conditions and the operation of the pulverized coal compensation amount calculating unit 70. Referring to FIG. 5, a method of automatically setting the pulverized coal compensation amount of the pulverizer do.                     

상기 미분탄 제조설비(20)의 파쇄기(23)가 동작을 개시하면(100), 상기 제1,2보상조건을 비교하는 로직소자부(10)와 상기 미분탄 보상설비(50)의 미분탄 보상량을 산출하는 미분탄 보상량 산출부(70)는 동시에 동작한다.When the crusher 23 of the pulverized coal manufacturing facility 20 starts operating (100), the pulsation compensation amount of the pulley grinding facility 50 and the logic element portion 10 for comparing the first and second compensation conditions The calculated pulverized coal compensation amount calculating section 70 operates simultaneously.

우선, 로직소자부(10)의 동작을 살펴보면, 제1보상조건이 만족하고(101) 제2보상조건이 만족하고(102), 운전자가 상기 보상모드 선택스위치(66)를 자동모드로 선택하면(103), 보상에어의 유량은 자동으로 조절되고 상기 미분탄 보상설비(50)는 상기 미분탄 보상량 산출부(70)로부터 입력되는 미분탄 보상량만큼 미분탄을 상기 미분탄 취입설비(40)로 이송시킨다. First, when the first compensation condition is satisfied (101), the second compensation condition is satisfied (102), and the driver selects the compensation mode selection switch 66 in the automatic mode The amount of the compensation air is automatically controlled and the pulverizing and collecting facility 50 transfers the pulverized coal to the pulverized coal receiving facility 40 by the pulverized coal compensation amount input from the pulverized coal compensation amount calculating unit 70.

또한, 상기 로직소자부(10)의 동작과 동시에 진행되는 상기 미분탄 보상량 산출부(70)의 동작을 살펴보면, 상기 미분탄 저장호퍼(45)내 중량(A)은 상기 미분탄 저장호퍼(45)의 하부에 설치된 중량검출기(45a)에 의해 검출되고(S104), 상기 다수의 미분탄 취입호퍼(46~48)의 중량(B)은 상기 다수의 미분탄 취입호퍼(46~48)의 하부에 설치된 다수의 중량검출기(46a~48a)에 의해 검출되어(S105) 제2합산기(72)로 출력된다. 상기 제2합산기(72)는 상기 미분탄 저장호퍼(45)의 중량(A)과 다수의 미분탄 취입호퍼(46~48)의 중량(B)을 입력받아 합산하여 현재 미분탄 취입설비(40) 내 미분탄 재고량(D)을 연산한다(S106). 상기 미분탄 재고량 편차연산기(73)는 미분탄 재고량 설정값(C)을 입력된 현재 미분탄 재고량(D)과 연산하여 그 편차(E)를 산출하고, 산출된 미분탄 재고량 편차(E)를 제3합산기(76)로 출력한다.The weight A of the pulverized coal storage hopper 45 may be adjusted by the weight of the pulverized coal storage hopper 45 and the weight of the pulverized coal storage hopper 45. [ The weight B of the plurality of pulverized coal receiving hoppers 46 to 48 is detected by a weight detector 45a installed at the lower portion of the plurality of pulverized coal receiving hoppers 46 to 48 Are detected by the weight detectors 46a to 48a (S105) and output to the second summer 72. [ The second summing unit 72 receives the weight A of the pulverized coal storage hopper 45 and the weight B of the pulverized coal receiving hoppers 46 to 48 to calculate a sum The pulverized coal inventory amount D is calculated (S106). The pulverized coal inventory quantity difference calculator 73 calculates the pulverized coal inventory quantity set value C with the input present pulverized coal inventory quantity D to calculate the deviation E and outputs the calculated pulverized coal inventory quantity deviation E to the third sum (76).

또한, 상기 미분탄 취입량 편차연산기(75)는 상기 미분탄 제조설비(20)의 급탄량설정기(25)에 설정된 급탄량 설정값(G)(109)과 상기 취입량설정기(74)의 취입량 설정값(F)(110)을 입력받아 두 설정값 간의 편차(H)를 산출하고(111), 산출된 미분탄 취입량 편차(H)를 상기 제3합산기(76)로 출력한다. 상기 제3합산기(76)는 상기 미분탄 재고량 편차(E)와 미분탄 취입량 편차(H)를 합산하여 상기 미분탄 보상설비(50)의 미분탄 보상량 설정값으로 출력하고, 상기 미분탄 보상설비(50)는 상기 미분탄 보상량 산출부(70)로부터 입력된 미분탄 보상량에 따라 보상을 개시한다(114).The pulverized coal intake quantity deviation calculator 75 calculates the pulverized coal intake quantity deviation G by using the set charge amount set value G (109) set in the coal load setting device 25 of the pulverized coal manufacturing facility 20, And outputs the calculated pulverized coal injection amount deviation H to the third summing unit 76. The third summing unit 76 calculates the difference H between the two set values. The third adder 76 sums the pulverized coal stock quantity deviation E and the pulverized coal intake quantity deviation H and outputs the sum as the pulverized coal recharge amount set value of the pulverized coal grinder 50, ) Starts to compensate according to the pulverized coal compensation amount input from the pulverized coal compensation amount calculation unit 70 (114).

본 발명은 미분탄 제조량과 취입량 간의 편차, 현재 재고량과 설정된 재고량 간의 편차를 연산하여 미분탄 보상설비의 미분탄 보상량 설정값을 자동으로 연산함으로써, 미분탄 취입설비의 미분탄 재고량을 일정하게 유지시킴으로써, 취입설비의 안정화, 용선 생산량의 증가, 원가절감 등의 효과가 있다. According to the present invention, the deviation between the production amount of pulverized coal and the intake amount, the deviation between the present inventory amount and the set stock amount is calculated, and the pulverized coal recharge amount setting value of the pulverized coal rewarding facility is automatically calculated, Stabilization of production, increase of production volume of charcoal, and cost reduction.

Claims (1)

석탄을 파쇄하여 미분탄을 제조하는 미분탄 제조설비와, 상기 미분탄 제조설비로부터 제조된 미분탄을 고로에 취입하는 미분탄 취입설비와, 상기 미분탄 취입설비의 연속 취입이 가능하도록 미분탄 취입설비의 미분탄 재고량을 보상하는 미분탄 보상설비를 구비한 미분탄 보상설비의 미분탄 보상량 자동 설정방법에 있어서,A pulverized coal manufacturing facility for pulverizing coal to produce pulverized coal; a pulverized coal receiving plant for pulverizing coal produced from the pulverized coal manufacturing plant into a blast furnace; and a pulverizer for collecting pulverized coal, A method for automatically setting a pulverized coal compensation amount of a pulverized coal recovery plant having a pulverized coal recovery plant, 상기 미분탄 제조설비의 동작이 개시되면, 미분탄 취입설비에서 미분탄 저장호퍼 및 다수의 미분탄 취입호퍼내 미분탄 중량을 검출하고 이를 합산하여 현재 미분탄 재고량을 연산하는 단계;Detecting the pulverized coal weight in the pulverized coal storage hopper and the plurality of pulverized coal receiving hoppers at the pulverized coal receiving facility when the operation of the pulverized coal manufacturing facility is started, 상기 현재 미분탄 재고량을 미분탄 재고량 설정값과 비교하여 미분탄 재고량 편차를 연산하는 단계;Comparing the current pulverized coal inventory quantity with a pulverized coal inventory quantity set value to calculate a pulverized coal inventory quantity deviation; 미분탄 제조과정에서 급탄량 설정값과 미분탄 취입량을 비교하여 미분탄 취입량 편차를 연산하는 단계;Calculating a pulverized coal blowing amount variation by comparing a coal set amount and a pulverized coal blowing amount in a pulverized coal manufacturing process; 상기 미분탄 재고량 편차와 상기 미분탄 취입량 편차를 합산하여 미분탄 보상량을 산출하는 단계; 및Calculating a pulverized coal recharge amount by summing the pulverized coal inventory amount deviation and the pulverized coal blown amount deviation; And 상기 산출된 미분탄 보상량을 상기 미분탄 보상설비의 미분탄 보상량 설정값으로 설정하여 상기 보상설비로부터 미분탄 취입설비로 미분탄을 보상하는 단계Setting the calculated pulverized coal compensation amount to a pulverized coal compensation amount set value of the pulverized coal grinder and compensating the pulverized coal from the compensation plant to the pulverized coal inlet facility 로 이루어진 것을 특징으로 하는 미분탄 보상설비의 미분탄 보상량 자동 설정 방법.Wherein the amount of the pulverized coal is set to a predetermined value.
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KR19990040875A (en) * 1997-11-20 1999-06-15 이구택 Feeding quantity control device of pulverized coal crusher
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KR20040003631A (en) * 2002-07-03 2004-01-13 주식회사 포스코 Apparatus for controlling weight of raw coal and pulverizer coal

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KR19990040875A (en) * 1997-11-20 1999-06-15 이구택 Feeding quantity control device of pulverized coal crusher
KR20020050960A (en) * 2000-12-22 2002-06-28 이구택 N2 reparation method in burden hopper
KR20040003631A (en) * 2002-07-03 2004-01-13 주식회사 포스코 Apparatus for controlling weight of raw coal and pulverizer coal

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