KR100923228B1 - Pulverized coal transportation system - Google Patents

Pulverized coal transportation system Download PDF

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KR100923228B1
KR100923228B1 KR1020070121959A KR20070121959A KR100923228B1 KR 100923228 B1 KR100923228 B1 KR 100923228B1 KR 1020070121959 A KR1020070121959 A KR 1020070121959A KR 20070121959 A KR20070121959 A KR 20070121959A KR 100923228 B1 KR100923228 B1 KR 100923228B1
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pulverized coal
particle size
supplied
size separator
hopper
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KR20090055177A (en
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유상오
정석우
이승종
윤용승
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고등기술연구원연구조합
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/20—Apparatus; Plants
    • C10J3/32—Devices for distributing fuel evenly over the bed or for stirring up the fuel bed
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/20—Apparatus; Plants
    • C10J3/22—Arrangements or dispositions of valves or flues
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/20—Apparatus; Plants
    • C10J3/30—Fuel charging devices
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/723—Controlling or regulating the gasification process
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913—Carbonaceous raw material
    • C10J2300/093—Coal
    • C10J2300/0936—Coal fines for producing producer gas

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

본 발명의 미분탄 정량이송 시스템은 분쇄 건조된 미분탄을 저장하고 공급하는 미분탄 공급 저장고(Pulverizer Coal Bin)(10)와, 상기 공급저장고(10)로부터 공급되는 미분탄을 체분리하는 입도분리기(30)와, 상기 미분탄 공급 저장고(10)로부터 상기 입도분리기(30)로 공급되는 미분탄량을 조절하도록 설치되는 제 1 조절수단(72)(74)과, 상기 입도분리기(30)의 하부에 설치되어 상기 입도분리기(30)에 의해 체분리된 미분탄이 공급되는 공압이송호퍼(60)와, 상기 입도분리기(30)로부터 공압이송호퍼(60)로 공급되는 미분탄량을 조절하도록 설치되는 제 2 조절수단(76)과, 상기 공압이송호퍼(60)에 공급된 미분탄량을 감지하는 중량감지수단(78)과, 상기 공압이송호퍼(60)내의 미분탄이 기류이송되는 분배,저장호퍼(50) 및 상기 제 1 및 제 2 조절수단(72)(74) 및 (76)과 중량감지수단(78)과를 제어하는 제어부(80)를 포함하여, 미분탄이 정량 공급되고, 미분탄 이송의 전공정이 자동화가 달성되는 효과를 가진다.The pulverized coal quantitative transfer system of the present invention is a pulverized coal supply reservoir (Pulverizer Coal Bin) (10) for storing and supplying pulverized pulverized coal and a particle size separator (30) for sifting the pulverized coal supplied from the supply reservoir (10) and The first control means 72 and 74 are installed to adjust the amount of pulverized coal supplied from the pulverized coal supply reservoir 10 to the particle size separator 30, and installed at a lower portion of the particle size separator 30. Pneumatic transfer hopper 60 is supplied with the pulverized coal sieved by the separator 30, and the second adjustment means 76 is installed to adjust the amount of pulverized coal supplied from the particle size separator 30 to the pneumatic transfer hopper (60) ), A weight sensing means (78) for sensing the amount of pulverized coal supplied to the pneumatic transfer hopper (60), and the pulverized coal in the pneumatic transfer hopper (60), the storage hopper 50 and the first And the second adjusting means 72, 74 and 76 and the weight index A controller 80 for controlling and 78, has the effect that pulverized coal is quantitatively fed, affection studied the pulverized coal transported to achieve automation.

Description

미분탄 정량이송 시스템{Pulveizer Coal Quantitative Transfer System}Pulveizer Coal Quantitative Transfer System

본 발명은 미분탄 정량이송 시스템에 관한 것으로, 더욱 상세하게는 미분탄이 정량 공급되고, 미분탄 이송의 전공정이 자동화로 이루어진 미분탄 정량이송 시스템에 관한 것이다.The present invention relates to a pulverized coal quantitative transfer system, and more particularly, to a pulverized coal quantitative transfer system in which pulverized coal is quantitatively supplied and the entire process of pulverized coal transfer is automated.

일반적으로 분쇄 건조된 미분탄은 석탄가스화기에서 사용되는 바, 이 석탄가스화기로의 이송을 위해 분쇄 건조된 미분탄은 자동으로 저장, 분배장치에 기류수송된다.In general, the pulverized pulverized coal is used in a coal gasifier, and the pulverized pulverized pulverized coal is automatically transferred to a storage and distribution device for transportation to the coal gasifier.

도 1 및 도 2에는 종래의 미분탄 정량이송 시스템을 개략적으로 도시하고 있다.1 and 2 schematically show a conventional pulverized coal transfer system.

도 1에 도시된 바와 같이, 분쇄 건조된 미분탄은 미분탄 공급 저장고(Pulverizer Coal Bin)(10)로부터 슬라이드 게이트 밸브(20)에 의해 입도분리기(30)로 공급된다. 입도분리기(30)에서 체분리된 미분탄은 이송스크류(40)를 통해 분배,저장호퍼(50)로 이송된다.As shown in FIG. 1, the pulverized pulverized coal is supplied to the particle size separator 30 by a slide gate valve 20 from a pulverizer coal bin 10. The pulverized coal sieved in the particle size separator 30 is distributed to the storage hopper 50 through the transfer screw 40.

이와 달리, 도 2에 도시된 바와 같이, 분쇄 건조된 미분탄은 미분탄 공급 저장고(Pulverizer Coal Bin)(10)로부터 슬라이드 게이트 밸브(20)에 의해 입도분리기(30)로 공급되고, 입도분리기(30)에서 체분리된 미분탄은 이송스크류(40)를 통해 공압이송호퍼(60)로 이송되며, 공압이송호퍼(60)에 설치된 레벨게이지 또는 센서(62)의 감지에 따라 에어가 공압이송호퍼(60)에 공급되는 동시에 분배,저장호퍼(50)에 설치된 송풍기(blow)(64)의 작동에 의해 에어를 흡입함으로서, 공압이송호퍼(60)내의 미분탄이 분배,저장호퍼(50)로 기류이송된다. Alternatively, as shown in FIG. 2, the pulverized pulverized coal is supplied from the pulverizer coal bin 10 to the particle size separator 30 by the slide gate valve 20, and the particle size separator 30. The pulverized pulverized coal is separated from is transferred to the pneumatic transfer hopper 60 through the transfer screw 40, the air is pneumatic transfer hopper 60 in accordance with the detection of the level gauge or sensor 62 installed in the pneumatic transfer hopper 60 At the same time as the air is sucked by the blower 64 installed in the distribution and storage hopper 50, the pulverized coal in the pneumatic transfer hopper 60 is flowed to the distribution and storage hopper 50.

이상과 같은 도 1 및 도 2에 도시된 종래의 미분량 정량이송 시스템은 미분탄을 미분탄 공급 저장고(10)에서 입도분리기(30)로 공급하는데 있어 작업자가 직접 현장에서 슬라이드 게이트 밸브(20)를 직접 개,폐해줘야 하는 문제가 있다.1 and 2 as described above, the conventional quantitative feed system for feeding pulverized coal from the pulverized coal supply reservoir 10 to the particle size separator 30 has a worker directly operating the slide gate valve 20 in the field. There is a problem that needs to be closed.

또한, 슬라이드 게이트 밸브(20)의 특성상 미분탄 공급량을 조절할 수 없기 때문에 입도분리기(30)로 공급되는 미분탄량이 일정하지 않게 되며, 간혹 작업자의 운전 미숙으로 인하여 입도분리기(30)에 공급되는 미분탄량이 적정 수준을 넘어서 외부로 유출되는 상황도 종종 발생하는 바, 이에 따른 미분탄의 손실이 야기된다.In addition, the pulverized coal supply amount supplied to the particle size separator 30 is not constant because the pulverized coal supply amount cannot be adjusted due to the characteristics of the slide gate valve 20, and sometimes the pulverized coal amount supplied to the particle size separator 30 due to inexperienced operation of the operator is appropriate. Frequent outflows often occur beyond this level, resulting in the loss of pulverized coal.

더구나, 도 1에 도시된 바와 같은 미분탄 정량이송 시스템은 미분탄이 이송스크류(40)을 통해 이송되는 체류시간이 길고, 작업공간을 확보하는데 어려움이 있다.Moreover, the pulverized coal quantitative transfer system as shown in FIG. 1 has a long residence time in which pulverized coal is transferred through the transfer screw 40 and has difficulty in securing a working space.

또한, 도 2에 도시된 바와 같이 미분탄 정량이송 시스템은 입도분리기(30)에서 공급되는 미분탄이 이송스크류(40)를 통해 공압이송호퍼(60)로 공급되는 바, 이입도분리기(30)로부터 이송스크류(40)로 공급되는 미분탄량이 많아지게 되면, 이송스크류(40)를 통해 이송되던 미분탄이 외부로 유출되는 경우가 있고, 이러한 외부 유출 현상으로 인하여 작업장 주변환경이 불결해지고 분진으로 인하여 작업자의 건 강을 위협하게 되고, 미분탄의 유실을 가중시키는 문제가 있다.In addition, as shown in FIG. 2, in the pulverized coal quantitative transfer system, the pulverized coal supplied from the particle size separator 30 is supplied to the pneumatic transfer hopper 60 through the transfer screw 40, and is transferred from the particle size separator 30. When the amount of pulverized coal supplied to the screw 40 increases, the pulverized coal transported through the transfer screw 40 may leak to the outside, and the surrounding environment becomes dirty due to the external spill and the operator's gun due to the dust. There is a problem that threatens rivers and increases the loss of pulverized coal.

본 발명은 상기와 같은 문제점을 해소하기 위해 발명된 것으로, 그 목적은 미분탄의 량을 정밀하게 공급하고, 미분탄 이송의 전공정이 자동화로 이루어진 미분탄 정량이송 시스템을 제공하는 것이다.The present invention has been invented to solve the above problems, an object of the present invention is to precisely supply the amount of pulverized coal, and to provide a pulverized coal quantitative transfer system in which the entire process of pulverized coal transfer is automated.

본 발명의 미분탄 정량이송 시스템은 분쇄 건조된 미분탄을 저장하고 공급하는 미분탄 공급 저장고(Pulverizer Coal Bin)와, 상기 공급저장고로부터 공급되는 미분탄을 체분리하는 입도분리기와, 상기 미분탄 공급 저장고로부터 상기 입도분리기로 공급되는 미분탄량을 조절하도록 설치되는 제 1 조절수단과, 상기 입도분리기의 하부에 설치되어 상기 입도분리기에 의해 체분리된 미분탄이 공급되는 공압이송호퍼와, 상기 입도분리기로부터 공압이송호퍼로 공급되는 미분탄량을 조절하도록 설치되는 제 2 조절수단과, 상기 공압이송호퍼에 공급된 미분탄량을 감지하는 중량감지수단과, 상기 공압이송호퍼내의 미분탄이 기류이송되는 분배,저장호퍼 및 상기 제 1 및 제 2 조절수단과 상기 입도분리기와 중량감지수단과를 제어하는 제어부를 포함한다.The pulverized coal quantitative transfer system of the present invention includes a pulverizer coal bin for storing and supplying pulverized pulverized coal, a particle size separator for sifting pulverized coal supplied from the feed reservoir, and the particle size separator from the pulverized coal supply reservoir. A first adjustment means installed to adjust the amount of fine coal supplied to the air, a pneumatic transfer hopper installed in the lower part of the particle size separator and supplied with the pulverized coal separated by the particle size separator, and supplied from the particle size separator to the pneumatic transfer hopper. A second adjusting means installed to adjust the amount of pulverized coal, a weight sensing means for sensing the amount of pulverized coal supplied to the pneumatic conveying hopper, and a distribution, storage hopper, and the first and the first and the pulverized coal in the pneumatic conveying hopper. And a control unit for controlling the adjusting means and the particle size separator and the weight sensing means.

본 발명에 있어서, 제 1 조절수단은 로타리밸브와 모터로 구성되며, 제 2 조절수단은 돔밸브이고, 중량감지수단은 로드셀이 바람직하다.In the present invention, the first adjusting means is composed of a rotary valve and a motor, the second adjusting means is a dome valve, and the weight sensing means is preferably a load cell.

본 발명은 기존의 미분탄 정량이송 시스템들에 비해 미분탄 공급 저장고로부 터 입도분리기로 공급되는 미분탄의 양조절과 또한 입도분리기로부터 하부에 위치된 공압이송호퍼로 공급되는 미분탄의 양조절이 정밀하게 제어되고, 공압이송호퍼에 설치된 중량감지수단에 의해 소정량의 미분탄이 감지되면 가스의 유입으로 미분탄이 기류이송하되 미분탄 이송 통로가 밀폐되어 있으므로 미분탄의 유실을 감소하며 현장에 작업자없이 제어실에서 자동으로 작동할 수 있으므로 작업환경을 개선하는 효과를 가진다.The present invention precisely controls the amount of pulverized coal supplied from the pulverized coal supply reservoir to the particle size separator and also the amount of the pulverized coal supplied from the particle size separator to the pneumatic transfer hopper located at the lower side, compared to the conventional pulverized coal transfer systems. When a predetermined amount of pulverized coal is detected by the weight sensing means installed in the pneumatic transfer hopper, the pulverized coal is transported by the inflow of gas, but the pulverized coal transfer passage is sealed, thus reducing the loss of pulverized coal and automatically operating in the control room without an operator in the field. As it can, it has the effect of improving the working environment.

이하 본 발명의 가장 바람직한 실시예를 첨부된 도면을 참조하여 본 발명의 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 더욱 상세히 설명하기로 한다. 도면 중 종래와 동일한 구성에 대해서는 동일한 참조번호를 병기하였고 그 상세한 설명은 생략하였다.DETAILED DESCRIPTION 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. In the drawings, the same components as in the related art are denoted by the same reference numerals, and detailed description thereof is omitted.

도 3은 본 발명의 바람직한 일 실시예에 따른 미분탄 정량이송 시스템의 구성을 나타내는 개략도이다.Figure 3 is a schematic diagram showing the configuration of pulverized coal quantitative transfer system according to an embodiment of the present invention.

도 3에 도시된 바와 같이, 본 발명의 미분탄 정량이송 시스템은 분쇄 건조된 미분탄을 저장하고 공급하는 미분탄 공급 저장고(Pulverizer Coal Bin)(10)와, 상기 공급저장고(10)로부터 공급되는 미분탄을 체분리하는 입도분리기(30)와, 상기 입도분리기(30)의 하부에 설치되어 상기 입도분리기(30)에 의해 체분리된 미분탄이 공급되는 공압이송호퍼(60)와, 상기 공압이송호퍼(60)내의 미분탄이 기류이송되는 분배,저장호퍼(50)를 포함한다.As shown in FIG. 3, the pulverized coal quantitative transfer system of the present invention sifts pulverized coal supplied from a pulverizer coal storage 10 and a pulverized coal supply storage 10 for storing and supplying pulverized coal pulverized coal. Pneumatic transfer hopper 60 to be separated, the pneumatic transfer hopper 60 is installed in the lower portion of the particle size separator 30 is supplied with pulverized coal sifted by the particle size separator 30, the pneumatic transfer hopper 60 The pulverized coal in the air includes a distribution, storage hopper 50 is transferred.

미분탄 공급 저장고(10)와 입도분리기(30)의 사이에는 미분탄 공급 저장 고(10)로부터 상기 입도분리기(30)로 공급되는 미분탄량을 조절하도록 제 1 조절수단이 설치된다. 제 1 조절수단은 로타리 밸브(72)와 이를 개폐하도록 구동되는 모터(74)와 이 구동모터의 속도를 조절할 수 있는 인버터(도시하지 않음)로 구성된다.A first adjusting means is installed between the pulverized coal supply reservoir 10 and the particle size separator 30 to adjust the amount of pulverized coal supplied from the pulverized coal supply reservoir 10 to the particle size separator 30. The first adjusting means includes a rotary valve 72, a motor 74 driven to open and close the rotary valve 72, and an inverter (not shown) capable of adjusting the speed of the driving motor.

한편, 입도분리기(30)와 공압이송호퍼(60)의 사이에는 입도분리기(30)로부터 공압이송호퍼(60)로 공급되는 미분탄량을 조절하도록 제 2 조절수단으로서 돔밸브(76)가 설치된다.On the other hand, between the particle size separator 30 and the pneumatic transfer hopper 60, a dome valve 76 is installed as the second adjusting means to adjust the amount of fine coal supplied from the particle size separator 30 to the pneumatic transfer hopper 60. .

또한, 공압이송호퍼(60)에는 공압이송호퍼(60)에 공급된 미분탄량을 감지하는 중량감지수단으로서의 로드셀(78)이 설치되며, 이러한 제 1 및 제 2 조절수단(72)(74) 및 (76)과 중량감지수단으로서의 로드셀(78)의 작동을 제어부(80)가 제어한다.In addition, the pneumatic transfer hopper 60 is provided with a load cell 78 as a weight sensing means for detecting the amount of pulverized coal supplied to the pneumatic transfer hopper 60, such first and second adjusting means (72) (74) and The controller 80 controls the operation of the 76 and the load cell 78 as the weight sensing means.

로드셀(78)에 의해 공압이송호퍼(60)에 소정량의 미분탄이 공급되었음을 감지되면, 질소 가스가 공압이송호퍼(60)에 주입되어 내부의 미분탄을 분배,저장호퍼(50)로 기류이송한다.When the load cell 78 detects that a predetermined amount of pulverized coal is supplied to the pneumatic transfer hopper 60, nitrogen gas is injected into the pneumatic transfer hopper 60 to distribute the pulverized coal inside and transfer the air to the storage hopper 50. .

이와 같이 구성된 본 발명의 미분탄 정량이송 시스템의 작동을 도 3을 참조하여 설명하면 다음과 같다.The operation of the pulverized coal quantitative transfer system of the present invention configured as described above will be described with reference to FIG. 3.

종래에 미분탄을 입도분리기(30)로 공급할 때 현장에서 작업자가 슬라이드 게이트 밸브(20)를 수작업으로 조작하는 것이 아니라, 제어부(80), 즉 제어판넬에의해 로터리 밸브(72)가 모터(74)의 작동에 의해 구동된다. 이때 미분탄의 공급량을 조절하기 위해서 인버터로 로터리 밸브(72)의 속도를 조절할 수 있다.Conventionally, when the pulverized coal is supplied to the particle size separator 30, the operator does not manually operate the slide gate valve 20 in the field, but the rotary valve 72 is controlled by the controller 80, that is, the control panel. Driven by the operation of. At this time, the speed of the rotary valve 72 may be adjusted by an inverter in order to adjust the supply amount of pulverized coal.

입도분리기(30)에 공급된 미분탄은 적절한 입도와 이물질로 분리되고, 기존의 스크류 이송방식이 아닌 입도분리기(30)의 하부에 설치된 공압이송호퍼(60)로 공급된다. 이때에도 입도분리기(30)와 공압이송호퍼(60)의 사이에 설치된 돔밸브(76)에 의해 공급량이 조절된다.The pulverized coal supplied to the particle size separator 30 is separated into an appropriate particle size and foreign matter, and is supplied to the pneumatic transfer hopper 60 installed in the lower part of the particle size separator 30 instead of the conventional screw transfer method. At this time, the supply amount is controlled by the dome valve 76 provided between the particle size separator 30 and the pneumatic transfer hopper (60).

기존에 공압이송호퍼(60) 내부에 설치되어 있던 레벨 센서 또는 레벨 게이지(62)에 의해 미분탄이 공급되었는지를 감지하여 기류이송이 진행되는데 이러한 레벨 센서(62) 방식은 일정한 량의 미분탄이 공급되었는지를 감지할 수 없는 단점이 있음에 반하여, 본 발명에서 개선된 방식으로의 로드셀(78)에 의해 미분탄량 감지는 제어부(80)에 미리 설정한 무게에 따라 일정한 미분탄량을 감지한다. 로드셀(78)에 의해 설정된 미분탄량이 감지되면, 공압이송호퍼(60)로 5~7 기압의 질소가스가 유입되어 미분탄은 분배,저장호퍼(50)로 기류이송하게 된다. 기존에 저압의 기류를 사용하는 방식이므로 이송시간이 길고 공압이송호퍼(60)의 내부에 잔탄이 남게되지만, 본 발명의 방식은 이송시간을 단축시키고, 공압이송호퍼(60) 내부에 잔탄이 남지않게 된다.The air flow is transferred by detecting whether or not pulverized coal is supplied by the level sensor or level gauge 62 that is previously installed in the pneumatic transfer hopper 60. While there is a disadvantage in that it is not possible to detect the pulverized coal amount by the load cell 78 in an improved manner in the present invention, the pulverized coal quantity is detected according to a preset weight in the controller 80. When the pulverized coal amount set by the load cell 78 is detected, nitrogen gas of 5 to 7 atm is introduced into the pneumatic transfer hopper 60, and the pulverized coal is transferred to the distribution and storage hopper 50. Since the conventional method of using a low pressure airflow, the transfer time is long and the residual coal remains in the pneumatic transfer hopper 60, but the method of the present invention shortens the transfer time, the residual coal remains in the pneumatic transfer hopper 60 Will not.

제어부(80)는 로터리 밸브(72)와 입도분리기(30) 그리고 공압이송호퍼(60)와 연계하여 공압이송호퍼(60)로 투입되는 미분탄의 무게가 로드셀(78)에 설정된 값 이하이면, 계속해서 로터리 밸브(72)와 입도분리기(30)는 작동한다.If the weight of the pulverized coal injected into the pneumatic transfer hopper 60 in connection with the rotary valve 72, the particle size separator 30 and the pneumatic transfer hopper 60 is less than the value set in the load cell 78, the controller 80 continues. The rotary valve 72 and the particle size separator 30 are operated.

이에 반하여, 공압이송호퍼(60)로 투입되는 미분탄의 무게가 로드셀(78)에 설정된 값으로 감지되면, 로터리 밸브(72)와 입도분리기(30)는 제어부(80)에 의해 자동으로 작동을 정지하게 된다.On the contrary, if the weight of the pulverized coal injected into the pneumatic transfer hopper 60 is detected as the value set in the load cell 78, the rotary valve 72 and the particle size separator 30 are automatically stopped by the controller 80. Done.

이와 같이, 로터리 밸브(72)와 입도분리기(30)가 작동을 정지하게 되면, 질 소가스 유입밸브(82)가 열리면서 질소가 공압이송호퍼(60)내부로 유입되면서 미분탄을 기류이송시킨다. 기류이송이 끝나게 되면, 다시 로터리 밸브(72)와 입도분리기(30)가 작동되어 공압이송호퍼(60)로 미분탄이 공급된다.As such, when the rotary valve 72 and the particle size separator 30 stop operation, the nitrogen gas inlet valve 82 opens and nitrogen flows into the pneumatic transfer hopper 60 to transfer the pulverized coal. When the air flow is finished, the rotary valve 72 and the particle size separator 30 is operated again to supply pulverized coal to the pneumatic transfer hopper 60.

이와 같이 본 발명은 상술한 개선 방식들을 사용함으로서 미분탄 이송의 전공정의 자동화가 달성되었고, 이에 현장에 작업자가 상주할 필요가 없으며, 로터리 밸브(72)와 로드셀(78)에 의해 분배,저장호퍼(50)에 유입되는 미분탄량이 일정해진다. 더구나 이송공정시 외부로 유출되는 미분탄이 없으므로 주변환경도 현저하게 개선된다.As such, the present invention achieves the automation of the entire process of pulverized coal transfer by using the above-described improvement methods, and thus, no need for an operator to stay in the field, and the distribution and storage hoppers may be distributed by the rotary valve 72 and the load cell 78. The amount of pulverized coal flowing into 50) becomes constant. Moreover, the environment is remarkably improved because there is no pulverized coal leaked to the outside during the transfer process.

다시말해서, 본 발명은 종래의 미분탄 정량이송 시스템과 달리 로터리 밸브(72)를 사용함으로 입도분리기(30)에 공급되는 미분탄량이 일정하며, 기존에 공압이송호퍼(60)에 설치되어 있는 레벨센서(62)가 측정부위 표면에 미분탄이 접촉할 때, 센서가 감지하는 방식이므로, 정량적으로 미분탄을 분배,저장호퍼(50)로 기류이송하는데 부정확하지만, 본 발명은 로드셀(78)을 이용한 무게 감지방식을 사용함으로써 정량적인 미분탄 저장이 가능하다.In other words, the present invention is different from the conventional pulverized coal quantitative transfer system using a rotary valve 72, the amount of pulverized coal supplied to the particle size separator 30 is constant, the level sensor (previously installed in the pneumatic transfer hopper 60 ( 62) is a method that the sensor detects when the coal is in contact with the surface of the measurement site, quantitatively distribute the pulverized coal, it is incorrect in the air flow to the storage hopper 50, but the present invention is a weight sensing method using a load cell 78 By using quantitative pulverized coal storage is possible.

또한 미분탄 공급 저장고(10)에서 작업자가 직접 슬라이드 게이트 밸브(20)를 조작하여 입도분리기(30)로 미분탄을 공급하는 방식은 본 발명의 로터리 밸브(72)를 이용하는 것에 비해 일정한 양을 공급하기 어렵고 이물질이 분리된 미분탄을 공압이송호퍼(60)로 공급할 때, 이송스크류(40) 방식에 비해 입도분리기(30) 하부에 설치되어 있는 공압이송호퍼(60)로 공급하는 방식이 미분탄 기류이송시 시간을 단축할 수 있으며, 작업공간의 확보가 용이하다. 또한, 미분탄이 외부로 유출되지 않으므로 작업환경이 개선되며, 전공정이 자동화가 이루어질 있으므로 현장에서 작업자가 상주할 필요성이 없게 된다.In addition, the method of supplying pulverized coal to the particle size separator 30 by operating the slide gate valve 20 directly by the operator in the pulverized coal supply reservoir 10 is difficult to supply a constant amount compared to using the rotary valve 72 of the present invention. When supplying the pulverized coal separated from the foreign matter to the pneumatic transfer hopper 60, compared to the feed screw 40 method to supply the pneumatic transfer hopper (60) installed in the lower part of the particle size separator 30, the time when the pulverized coal air flow It can shorten and secure the working space. In addition, since the pulverized coal is not leaked to the outside, the working environment is improved, and the entire process is automated, thus eliminating the need for an operator to reside in the field.

이상에서 설명한 것은 본 발명에 따른 미분탄 정량이송 시스템의 하나의 바람직한 실시예에 불과한 것으로서, 본 발명은 상기한 실시예에 한정되지 않는 것이므로, 이하의 특허청구범위에서 청구하는 바와 같이 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능한 범위까지 본 발명의 기술적 정신이 있다고 할 것이다.What has been described above is only one preferred embodiment of the pulverized coal quantitative transfer system according to the present invention, and the present invention is not limited to the above-described embodiment, and therefore, the subject matter of the present invention as claimed in the following claims. Without departing from the scope of the present invention, any person having ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

도 1은 종래의 미분탄 정량이송 시스템의 일예의 구성을 나타내는 개략도이고,1 is a schematic view showing the configuration of an example of a conventional pulverized coal quantitative transfer system,

도 2는 종래의 미분탄 정량이송 시스템의 다른 예의 구성을 나타내는 개략도이고,Figure 2 is a schematic diagram showing the configuration of another example of a conventional pulverized coal quantitative transfer system,

도 3은 본 발명의 바람직한 일 실시예에 따른 미분탄 정량이송 시스템의 구성을 나타내는 개략도이다.Figure 3 is a schematic diagram showing the configuration of pulverized coal quantitative transfer system according to an embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 미분탄 공급 저장조 20 : 슬라이드 게이트 밸브10: pulverized coal supply reservoir 20: slide gate valve

30 : 입도분리기 40 : 이송스크류30: particle size separator 40: feed screw

50 : 분배,저장호퍼 60 : 공압이송호퍼50: Dispensing and Storage Hopper 60: Pneumatic Transfer Hopper

62 : 레벨 센서 64 : 송풍기62: level sensor 64: blower

72 : 로터리 밸브 74 : 구동 모터72: rotary valve 74: drive motor

76 : 돔 밸브 78 : 로드셀76: dome valve 78: load cell

80 : 제어부 82 : 질소가스 유입밸브80: control unit 82: nitrogen gas inlet valve

Claims (4)

미분탄 정량이송 시스템에 있어서,In pulverized coal transportation system, 분쇄 건조된 미분탄을 저장하고 공급하는 미분탄 공급 저장고(Pulverizer Coal Bin)와,Pulverizer Coal Bin for storing and supplying pulverized pulverized coal, 상기 공급저장고로부터 공급되는 미분탄을 체분리하는 입도분리기와,A particle size separator for sieving the pulverized coal supplied from the supply reservoir; 상기 미분탄 공급 저장고로부터 상기 입도분리기로 공급되는 미분탄량을 조절하도록 로타리 밸브와 이를 개폐하도록 구동하는 모터로 구성되어 설치되는 제 1 조절수단과,First adjustment means configured and installed by a rotary valve and a motor driving to open and close the pulverized coal amount supplied from the pulverized coal supply reservoir to the particle size separator; 내부에 레벨센서가 상기 입도분리기의 하부에 설치되어 상기 입도분리기에 의해 체분리된 미분탄이 공급되는 공압이송호퍼와,A pneumatic transfer hopper having a level sensor installed in the lower part of the particle size separator and supplied with pulverized coal separated by the particle size separator; 상기 입도분리기로부터 공압이송호퍼로 공급되는 미분탄량을 감지하여 조절하도록 돔밸브로 구성되어 설치되는 제 2 조절수단과,Second adjustment means configured and installed as a dome valve to detect and adjust the amount of fine coal supplied to the pneumatic transfer hopper from the particle size separator; 상기 공압이송호퍼에 공급된 미분탄량을 감지하도록 로드셀로 구성되는 중량감지수단과,A weight sensing means configured of a load cell to sense the amount of fine coal supplied to the pneumatic transfer hopper; 상기 공압이송호퍼내의 미분탄이 기류이송되는 분배,저장호퍼 및Distribution and storage hopper in which the pulverized coal in the pneumatic conveying hopper is airflowed; 상기 제 1 및 제 2 조절수단과 상기 입도분리기 및 상기 공압이송호퍼와 연계하여 상기 공압이송호퍼로 투입되는 미분탄의 무게가 상기 로드셀에 설정된 값에 따라 상기 로타리 밸브와 입도분리기의 작동을 제어하고, The operation of the rotary valve and the particle size separator controls the first and second adjustment means, the particle size separator and the pneumatic transfer hopper in connection with the weight of the pulverized coal injected into the pneumatic transfer hopper according to a value set in the load cell. 상기 중량감지수단의 로드셀에 의해 상기 공압이송호퍼에 소정량의 미분탄이 공급되었음이 감지되면, 상기 로타리 밸브 및 입도분리기의 작동을 정지하고, 질소 가스가 상기 공압이송호퍼에 유입되어 내부의 미분탄을 상기 분배,저장호퍼로 기류이송하도록 질소가스 유입밸브를 제어하는 제어부를 포함하는When it is detected that a predetermined amount of pulverized coal is supplied to the pneumatic transfer hopper by the load cell of the weight sensing means, the operation of the rotary valve and the particle size separator is stopped, and nitrogen gas flows into the pneumatic transfer hopper to collect the pulverized coal inside. A control unit for controlling the nitrogen gas inlet valve to transfer the air flow to the distribution, storage hopper 미분탄 정량이송 시스템.Pulverized coal feed system. 삭제delete 제 1 항에 있어서,The method of claim 1, 상기 질소 가스는 5~7 기압으로 유입되는 것을 특징으로 하는The nitrogen gas is characterized in that introduced at 5 to 7 atmospheres 미분탄 정량이송 시스템.Pulverized coal feed system. .. 삭제delete
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