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KR200498336Y1 - Coal storage facilities to prevent spontaneous coal ignition - Google Patents

Coal storage facilities to prevent spontaneous coal ignition Download PDF

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Publication number
KR200498336Y1
KR200498336Y1 KR2020190000905U KR20190000905U KR200498336Y1 KR 200498336 Y1 KR200498336 Y1 KR 200498336Y1 KR 2020190000905 U KR2020190000905 U KR 2020190000905U KR 20190000905 U KR20190000905 U KR 20190000905U KR 200498336 Y1 KR200498336 Y1 KR 200498336Y1
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coal
storage facility
flexible film
opening
coal storage
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KR20200002002U (en
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최상원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G3/00—Storing bulk material or loose, i.e. disorderly, articles
    • B65G3/04—Storing bulk material or loose, i.e. disorderly, articles in bunkers, hoppers, or like containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/04—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B65G2201/045—Sand, soil and mineral ore
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2814/00—Indexing codes relating to loading or unloading articles or bulk materials
    • B65G2814/02—Auxiliary devices or arrangements
    • B65G2814/0241—Auxiliary devices or arrangements for spreading out the material over the whole surface to be loaded

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

본 발명은, 보관 중인 석탄에서 발생하는 자연발화를 방지하기 위해 석탄 저장을 위한 석탄 저장용 구조물을 제공하는 것을 목적으로 한다. 상기와 같은 문제를 해결하기 위해, 본 발명은, 상기와 같은 문제를 해결하기 위해, 내부에 석탄을 밀폐 상태로 보관하는 구조물, 및 상기 구조물에 연결되어 상기 구조물 내부를 음압 상태로 유지하는 진공장치를 포함하고, 상기 구조물은 상면에 구비된 개구, 및 상기 개구를 개방 또는 밀폐하는 가요성 필름을 포함하는, 석탄 저장 시설물을 제공한다.The present invention aims to provide a coal storage structure for storing coal in order to prevent spontaneous combustion occurring in stored coal. In order to solve the above problems, the present invention provides a coal storage facility including a structure for storing coal in a sealed state therein, and a vacuum device connected to the structure for maintaining the inside of the structure in a negative pressure state, wherein the structure includes an opening provided on an upper surface, and a flexible film for opening or sealing the opening.

Description

석탄의 자연발화를 방지하기 위한 석탄 저장 시설물{Coal storage facilities to prevent spontaneous coal ignition}Coal storage facilities to prevent spontaneous coal ignition

본 발명은 저탄장의 자연발화 방지를 위한 시설물에 대한 것으로서, 보다 상세하게는 석탄이 보관 중 자연발화되는 것을 방지하기 위해 대기와 차단하여 보관할 수 있는 시설물에 관한 것이다.The present invention relates to a facility for preventing spontaneous combustion of a coal storage facility, and more specifically, to a facility capable of storing coal while blocking it from the atmosphere to prevent spontaneous combustion during storage.

화력발전소 등에서 연료로 사용되는 석탄은 일반적으로 제반 여건상 다수의 석탄더미로 해서 장시간 보관하여 사용하는 경우가 많다. 이러한 석탄 더미는 길게는 몇 개월씩 쌓여 있는 경우가 빈번한데, 이러한 보관 중에 대기 중의 산소와 반응하여 화재가 일어나는 경우가 많다.Coal used as fuel in thermal power plants, etc., is usually stored in piles for long periods of time due to various conditions. These piles of coal are often piled up for several months, and during this storage, fires often occur due to reactions with oxygen in the atmosphere.

인화물이 연소(또는 인화)되기 위해서는 연소의 3 요소, 즉 가연물, 조연물(산소 등), 점화원이 필요하다. 이들 중 하나라도 없다면 연소가 발생하지 않는다. 석탄은 가연물로서 저장 중에 석탄의 구성 분자가 공기 중의 산소를 흡착하여 국소 부분에서 발열 산화반응을 일으키기 쉽다. 특히 석탄은 다공성 물질로 비표면적이 크기 때문에 산소의 흡착량이 많아 산화반응이 쉽게 일어나게 된다. 석탄이 더미로 쌓여있으면 이러한 산화반응으로 인해 발생되는 열이 외부로 충분히 방출되지 않고 온도의 상승이 일어나 석탄의 발화온도를 넘어가게 되어 점화원이 생성되고 조연물인 산소가 지속적으로 공급되면서 화재가 일어나게 된다. 이렇게 일단 화재가 발생하면 소화하기가 매우 어렵고 발화로 인한 원료의 손실뿐만 아니라 발화에 따른 일산화탄소, 분진 등의 발생에 따른 환경 오염의 문제도 심각하게 된다. In order for a combustible to burn (or ignite), three elements of combustion are required: combustible, supporting material (oxygen, etc.), and ignition source. If even one of these is missing, combustion does not occur. Coal is a combustible, and during storage, its constituent molecules easily absorb oxygen in the air, causing exothermic oxidation reactions in localized areas. In particular, coal is a porous material with a large specific surface area, so it absorbs a lot of oxygen, making oxidation reactions easy. If coal is piled up in a pile, the heat generated by this oxidation reaction is not sufficiently released to the outside, and the temperature rises, exceeding the ignition temperature of the coal, creating an ignition source and continuously supplying supporting material oxygen, causing a fire. Once a fire breaks out, it is very difficult to extinguish, and in addition to the loss of raw materials due to ignition, the problem of environmental pollution caused by the generation of carbon monoxide and dust due to ignition is also serious.

이러한 보관 중인 석탄에서 발생하는 자연발화를 방지하기 위해 다양한 방법들이 시도되고 있는데, 대한민국 공개특허공보 제10-2018-0010822호에서는 일정 온도 이상이 되면 내부에 압축 주입된 액화질소를 외부로 분출하여 적재된 석탄 주변의 온도를 낮춰 주는 냉각볼을 석탄층 내에 일정 간격을 두고 배치하여 자연발화를 방지하는 방법을 개시하고 있으나, 이는 냉각볼의 배치가 균일하지 못하면 자연발화를 막을 수 없는 문제가 있다. Various methods have been attempted to prevent spontaneous combustion in such stored coal. Korean Patent Publication No. 10-2018-0010822 discloses a method of preventing spontaneous combustion by arranging cooling balls at regular intervals within a coal layer, which lower the temperature around the loaded coal by emitting compressed liquid nitrogen injected inside when the temperature exceeds a certain level. However, this method has the problem that spontaneous combustion cannot be prevented if the arrangement of the cooling balls is not uniform.

대한민국 공개특허공보 제10-2012-0139227호에서는 이산화탄소가 주성분이고 수분이 제거된 가스를 석탄을 저장하는 저탄장 하부에 설치된 가스 분사관을 통해 분사하여 산소의 접촉을 최소화하고 가스 대류에 의해 냉각효과를 얻을 수 있는 장치를 개시하고 있으나, 이 발명도 저탄장의 일부에서만 효과를 얻을 수 있고 가스가 미치지 못하는 영역에서는 발화가 일어날 가능성이 매우 높은 문제가 있다.Korean Patent Publication No. 10-2012-0139227 discloses a device that injects gas containing carbon dioxide as its main component and with moisture removed through a gas injection pipe installed at the bottom of a coal storage facility to minimize contact with oxygen and obtain a cooling effect through gas convection. However, this invention is also problematic in that it is effective only in some parts of the coal storage facility and there is a very high possibility of ignition in areas that the gas cannot reach.

대한민국 공개특허공보 제10-2018-0010822호 "저탄장 자연발화 방지 냉각볼"Republic of Korea Patent Publication No. 10-2018-0010822 "Low-carbon spontaneous combustion prevention cooling ball" 대한민국 공개특허공보 제10-2012-0139227호 "배가스를 이용한 저탄장 자연발화 방지시스템"Republic of Korea Patent Publication No. 10-2012-0139227 "Low-carbon spontaneous combustion prevention system using exhaust gas"

본 발명은, 보관 중인 석탄에서 발생하는 자연발화를 방지하기 위해 석탄 저장을 위한 석탄 저장용 시설물을 제공하는 것을 목적으로 한다.The purpose of the present invention is to provide a coal storage facility for storing coal to prevent spontaneous combustion occurring in stored coal.

상기와 같은 문제를 해결하기 위해, 본 발명은, 내부에 석탄을 밀폐 상태로 보관하는 구조물, 및 상기 구조물에 연결되어 상기 구조물 내부를 음압 상태로 유지하는 진공장치를 포함하고, 상기 구조물은 상면에 구비된 개구, 및 상기 개구를 개방 또는 밀폐하는 가요성 필름을 포함하는, 석탄 저장 시설물을 제공한다.In order to solve the above problems, the present invention provides a coal storage facility including a structure for storing coal in a sealed state therein, and a vacuum device connected to the structure for maintaining the inside of the structure in a negative pressure state, wherein the structure includes an opening provided on an upper surface, and a flexible film for opening or sealing the opening.

본 발명에 따르면, 보관 중인 석탄을 대기 중의 산소와 격리하여 보관함으로써 자연 발화 가능성을 원천적으로 없애 자연 발화에 따른 원료소진, 환경문제를 해결할 수 있다.According to the present invention, by storing coal in storage in isolation from oxygen in the atmosphere, the possibility of spontaneous combustion is eliminated at the source, thereby solving problems related to raw material exhaustion and environmental issues caused by spontaneous combustion.

도 1 은 본 발명의 실시예에 따른 석탄 저장 시설물을 도시하는 사시도로서, 도 1(a) 는 가요성 필름이 없는 상태이고, 도 1(b) 는 가요성 필름이 덮인 상태를 나타낸다.
도 2 는 본 발명에 따른 평탄화 수단을 포함하는 석탄 저장 시설물을 도시하는 사시도이다.FIG. 1 is a perspective view illustrating a coal storage facility according to an embodiment of the present invention, where FIG. 1(a) illustrates a state without a flexible film, and FIG. 1(b) illustrates a state covered with a flexible film.
FIG. 2 is a perspective view illustrating a coal storage facility including a flattening means according to the present invention.

이하 본 발명의 실시예에 대하여 첨부된 도면을 참고로 그 구성 및 작용을 설명하기로 한다. 하기에서 본 발명을 설명함에 있어, 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다. 또한, 어떤 부분이 어떤 구성요소를 '포함'한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.Hereinafter, the configuration and operation of the embodiments of the present invention will be described with reference to the attached drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, when a part is said to 'include' a certain component, this does not mean that other components are excluded, but rather that other components can be included, unless otherwise specifically stated.

도 1 을 참고하면, 석탄 저장 시설물은, 내부에 석탄을 밀폐 상태로 보관하는 구조물, 및 상기 구조물에 연결되어 상기 구조물 내부를 음압 상태로 유지하는 진공장치를 포함하고, 상기 구조물은 상면에 구비된 개구, 및 상기 개구를 개방 또는 밀폐하는 가요성 필름을 포함한다.Referring to FIG. 1, a coal storage facility includes a structure for storing coal in a sealed state therein, and a vacuum device connected to the structure for maintaining the inside of the structure in a negative pressure state, and the structure includes an opening provided on an upper surface, and a flexible film for opening or sealing the opening.

본 발명에서 석탄 저장 시설물은 실내뿐만 아니라 실외에도 설치될 수 있는데, 종래에 열린 공간에 적재하여 보관하는 방식에서 벗어나 구획된 공간에 석탄을 적재하기 위해 상면의 적어도 일부가 개방된 개구(11)를 포함하면서 상면 이외에는 모두 밀폐된 구조물(10)을 설치한다. 구조물은 콘크리트로 만들어질 수 있고 다양한 형상이 가능하여 편의에 따라 위에서 볼 때 사각형뿐만 아니라 원형, 팔각형, 삼각형, 오각형 등이 될 수 있다. In the present invention, the coal storage facility can be installed not only indoors but also outdoors, and, unlike the conventional method of storing coal by loading it in an open space, a structure (10) is installed that includes an opening (11) in which at least a portion of the upper surface is open, while the entire surface except for the upper surface is sealed, in order to load coal in a partitioned space. The structure can be made of concrete and can have various shapes, such as a square, a circle, an octagon, a triangle, a pentagon, etc. when viewed from above, depending on convenience.

이러한 구조물에 석탄이 적재된 후 상면에 구비된 개구(11)는 가요성 필름(20)으로 덮여지고, 구조물에는 진공장치가 연결되어 진공장치(30)에 의해 구조물(10) 내부 공간의 공기를 빼내어 주어 음압이 유지될 수 있게 된다. 가요성 필름(20)은 진공장치가 내부 공간을 음압으로 만들어 주는 동안 적재된 석탄에 밀착하게 되면서 외부 공기의 유입을 차단하게 된다. 가요성 필름(20)은 PET, PI, PC, PVC 등과 같은 폴리머로 이루어져 탄성이 뛰어나고 연신이 잘 일어나서 진공장치의 흡입력에 의해 석탄에 밀착할 수 있는 재질로 이루어지는 것이 바람직하다. 진공 장치는 하나가 아닌 다수가 구조물의 여러 곳에 연결되어 좀 더 효율적으로 석탄 적재 공간의 진공을 유지하도록 할 수 있다.After coal is loaded into the structure, the opening (11) provided on the upper surface is covered with a flexible film (20), and a vacuum device is connected to the structure so that air in the internal space of the structure (10) is removed by the vacuum device (30) so that negative pressure can be maintained. The flexible film (20) is in close contact with the loaded coal while the vacuum device creates negative pressure in the internal space, thereby blocking the inflow of outside air. It is preferable that the flexible film (20) be made of a material such as a polymer, such as PET, PI, PC, or PVC, which has excellent elasticity and good elongation and can be in close contact with the coal by the suction force of the vacuum device. The vacuum devices may be connected to multiple locations of the structure instead of just one to more efficiently maintain the vacuum in the coal loading space.

본 발명에 따라, 상기 가요성 필름(20)에는 밀봉을 위한 계면물질이 도포된, 석탄 저장 시설물을 제공한다. 가요성 필름(20)과 구조물(10) 사이의 틈을 통한 대기의 유입을 방지하기 위해 틈을 매워 주는 계면물질을 도포함으로써 석탄 적재 공간의 원활한 진공 유지를 도울 수 있다. 계면물질은 진공 그리스인 것이 바람직하다.According to the present invention, a coal storage facility is provided in which an interface material for sealing is applied to the flexible film (20). By applying an interface material that fills the gap between the flexible film (20) and the structure (10) to prevent the inflow of air through the gap, it is possible to help maintain a smooth vacuum in the coal loading space. It is preferable that the interface material is vacuum grease.

또한, 상기 가요성 필름(20)과 상기 구조물(10) 사이에 가스켓을 더 포함할 수 있다. 구조물과 가요성 필름이 맞닿는 부분에 고정된 가스켓을 통해 진공을 더 원활하게 유지할 수 있다.In addition, a gasket may be further included between the flexible film (20) and the structure (10). The vacuum can be maintained more smoothly through the gasket fixed to the part where the structure and the flexible film come into contact.

도 2 를 참고하면, 석탄 저장 시설물은, 적재된 석탄의 상부면을 평탄화하기 위해 슬라이딩 수단, 및 상기 슬라이딩 수단에 연결되어 상기 슬라이딩 수단의 동작에 따라 석탄 분말을 한쪽 방향으로 밀어 평탄화시키는 평탄화 수단을 포함한다. Referring to FIG. 2, the coal storage facility includes a sliding means for leveling the upper surface of loaded coal, and a leveling means connected to the sliding means for pushing coal powder in one direction and leveling it according to the operation of the sliding means.

구조물에 적어도 일부가 개방된 상면(11)을 통해 석탄을 적재하는 경우 적재된 석탄 분말의 상부면은 개구(11) 위로 돌출되고 불균일할 수 있는데, 이러한 돌출되고 불균일한 상부면은 가요성 필름(20)의 설치와, 진공장치(30)에 의한 배기 공정 시에 가요성 필름(20)의 밀착을 어렵게 할 수 있다. 따라서, 석탄의 적재 후 이를 평탄화하기 위해 바(bar) 형태의 평탄화 수단(40)과 이를 이동시키기 위한 슬라이딩 수단(50)을 통해 석탄 분말을 한쪽으로 밀어내면서 상부면을 평탄화시킬 수 있다.When coal is loaded through an upper surface (11) that is at least partially open in a structure, the upper surface of the loaded coal powder may protrude above the opening (11) and be uneven. Such protruding and uneven upper surface may make it difficult to install a flexible film (20) and to adhere the flexible film (20) during an exhaust process using a vacuum device (30). Therefore, after loading the coal, the upper surface may be flattened by pushing the coal powder to one side using a bar-shaped flattening means (40) and a sliding means (50) for moving the bar-shaped flattening means.

상술한 바와 같이 본 발명에서 제공하는 석탄 저장 시설물은 보관 중인 석탄 분말을 대기와 차단함으로써 화재 발생의 위험을 원천적으로 차단할 수 있게 된다.As described above, the coal storage facility provided by the present invention can fundamentally block the risk of fire by blocking the stored coal powder from the atmosphere.

본 명세서에서는 본 발명이 일부 실시예들과 관련하여 설명되었지만, 본 발명이 속하는 기술분야의 당업자가 이해할 수 있는 본 발명의 정신 및 범위를 벗어나지 않는 범위에서 다양한 변형 및 변경이 이루어질 수 있다는 점을 알아야 할 것이다. 또한, 그러한 변형 및 변경은 본 명세서에 첨부된 특허청구의 범위 내에 속하는 것으로 생각되어야 한다.Although the present invention has been described in connection with some embodiments herein, it should be understood that various modifications and changes may be made therein without departing from the spirit and scope of the invention as understood by those skilled in the art to which the present invention pertains. Furthermore, such modifications and changes should be considered to fall within the scope of the claims appended hereto.

10 : 구조물
20 : 가요성 필름
30 : 진공 장치
40 : 평탄화 수단
50 : 슬라이딩 수단10 : Structure
20: Flexible film
30 : Vacuum device
40: Flattening means
50 : Sliding means

Claims (4)

내부에 석탄을 보관하고 상면 이외에는 외부 공기와 차단되면서 상기 상면의 적어도 일부가 개방된 개구를 포함하는 구조물;
상기 구조물에 연결되어 상기 구조물 내부를 음압 상태로 유지하는 진공장치; 및
상기 개구를 개폐하면서 닫은 상태에서는 상기 음압 상태에서 상기 석탄에 밀착할 수 있는 PET, PI, PVC, PC 중 어느 하나의 소재로 만들어지는 가요성 필름을 포함하는, 석탄 저장 시설물.A structure having an opening for storing coal inside and having an upper surface that is sealed from the outside air except for the upper surface, at least a portion of said upper surface being open;
A vacuum device connected to the above structure and maintaining the inside of the structure in a negative pressure state; and
A coal storage facility comprising a flexible film made of any one of PET, PI, PVC, and PC, which can adhere to the coal in a negative pressure state when the opening is opened and closed. 제 1 항에 있어서,
상기 가요성 필름에는 밀봉을 위한 계면물질이 도포된, 석탄 저장 시설물.In paragraph 1,
A coal storage facility, wherein the above-mentioned flexible film has an interface material applied thereto for sealing. 제 1 항에 있어서,
상기 가요성 필름과 상기 구조물 사이에 가스켓을 더 포함하는, 석탄 저장 시설물.In paragraph 1,
A coal storage facility further comprising a gasket between the flexible film and the structure. 제 1 항에 있어서,
적재된 상기 석탄의 상부면을 평탄화하기 위해,
슬라이딩 수단, 및 상기 슬라이딩 수단에 연결되어 상기 슬라이딩 수단의 동작에 따라 석탄 분말을 한쪽 방향으로 밀어 평탄화시키는 평탄화 수단을 포함하는, 석탄 저장 시설물.

In paragraph 1,
To level the upper surface of the loaded coal,
A coal storage facility comprising a sliding means and a leveling means connected to the sliding means for pushing coal powder in one direction and leveling it according to the operation of the sliding means.
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