KR20190023410A - Manufacturing method of bottom ash and bottom thereby the same that - Google Patents

Manufacturing method of bottom ash and bottom thereby the same that Download PDF

Info

Publication number
KR20190023410A
KR20190023410A KR1020170109165A KR20170109165A KR20190023410A KR 20190023410 A KR20190023410 A KR 20190023410A KR 1020170109165 A KR1020170109165 A KR 1020170109165A KR 20170109165 A KR20170109165 A KR 20170109165A KR 20190023410 A KR20190023410 A KR 20190023410A
Authority
KR
South Korea
Prior art keywords
bottom ash
ash
particle size
unburned carbon
ashes
Prior art date
Application number
KR1020170109165A
Other languages
Korean (ko)
Inventor
유연표
Original Assignee
유연표
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 유연표 filed Critical 유연표
Priority to KR1020170109165A priority Critical patent/KR20190023410A/en
Publication of KR20190023410A publication Critical patent/KR20190023410A/en

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02Agglomerated materials, e.g. artificial aggregates
    • C04B18/027Lightweight materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/04Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • C04B33/135Combustion residues, e.g. fly ash, incineration waste
    • C04B33/1352Fuel ashes, e.g. fly ash
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/60Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/52Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y02W30/523
    • Y02W30/526
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete
    • Y02W30/92

Abstract

The present invention relates to a new method for recycling a bottom ash, which can induce recycling diffusion of a bottom ash to reduce waste of resources by allocating the bottom ash for each particle size to easily recycle the same, and can prevent environmental pollution, and to a recycled bottom ash of high quality for a lightweight aggregate treated thereby. The new method for recycling a bottom ash of the present invention comprises the processes of: (1) collecting a bottom ash generated in a thermoelectric power plant; (2) selecting the bottom ash having a particle size of 0.9 mm or more from the collected bottom ash; (3) washing and drying the bottom ash selected in the process (2); (4) storing the bottom ash going through the process (3); (5) shipping the bottom ash stored in the process (4) as a lightweight aggregate, a cement secondary product raw material, or a ceramic raw material; (6) storing the bottom ash having a particle size of 0.9 mm or less, which is remained after being selected in the process (2); and (7) shipping the bottom ash stored in the process (6) as a secondary product.

Description

바텀애쉬 재활용 방법 및 이에 의해 처리된 경량골재용 재활용 바텀애쉬{Manufacturing method of bottom ash and bottom thereby the same that}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of recycling a bottom ash and a recycled bottom ash for lightweight aggregate treated thereby,

본 발명은 바텀애쉬 재활용방법 및 이에 의해 처리된 경량골재용 재활용 바텀애쉬에 관한 것으로서, 보다 상세하게는 바텀애쉬를 입도별로 분급하여 재활용을 용이하게 함으로써 바텀애쉬의 재활용 확산을 유도하여 자원낭비를 줄이고, 환경오염을 방지할 수 있는 새로운 방식의 바텀애쉬 재활용방법과 이에 의해 처리되어 고품질을 가지는 경량골재용 재활용 바텀애쉬에 관한 것이다. The present invention relates to a bottom ash recycling method and a recycled bottom ash for lightweight aggregate treated thereby. More specifically, the present invention relates to recycling bottom ash by classifying bottom ash by particle size to facilitate recycling, thereby reducing waste of resources by inducing recycling of bottom ash , A new method of recycling a bottom ash that can prevent environmental pollution, and a recycled bottom ash for lightweight aggregate that has been treated thereby and has high quality.

석탄재는 크게 플라이애쉬(Fly ash), 바텀애쉬(Bottom ash)로 구분되는데, 플라이애쉬는 콘크리트 혼화재 등으로 폭 넓게 재활용되고 있으나, 바텀애쉬는 입형이 불규칙하고, 입자의 크기도 다양하여 골재용으로 사용하기에 다소 부적합한 측면이 있어 현재에는 재활용실적이 미미하고 대부분은 매립되고 있다.The coal ash is divided into fly ash and bottom ash. The fly ash is widely recycled by concrete admixture and so on. However, the bottom ash is irregular in shape and varies in particle size, There is a somewhat inadequate aspect to use, and currently recycling is minimal and most of it is landfilled.

그런데 연간 우리나라 화력발전소에서 발생되는 석탄재의 양이 수 천 ~ 수 백만 톤으로서, 바텀애쉬의 발생량도 상당하다. 따라서 바텀애쉬의 매립을 위한 용지확보의 어려움이 발생되며, 바텀애쉬의 매립에 따른 환경오염 문제도 야기된다.However, the amount of coal ash generated in Korea's thermal power plant is several thousand to several million tons per year, and the amount of bottom ash is also considerable. Therefore, it is difficult to secure the paper for the bottom ash filling and environmental pollution problem due to the buried bottom ash.

한편, 바텀애쉬는 통기성, 보수력, 보비력, 보온성, 보냉성 등이 우수하고 자체적으로 비료성분을 함유하고 있으며 다량의 미네랄이 함유되어 있다. 또한, 바텀애쉬는 일반 모래 등과는 달리 다공성을 가지므로 경량이고 단열성도 우수한 장점을 가진다. Bottom ash, on the other hand, is excellent in air permeability, water holding capacity, bending strength, warmth keeping ability, cold holding ability, self-contained fertilizer ingredient and contains a lot of minerals. Bottom ash, unlike ordinary sand, has the advantage of being lightweight since it has porosity and excellent in heat insulation.

이러한 바텀애쉬는 입도 별로 용도가 달라지므로 바텀애쉬의 재활용도를 높이기 위해서는 용도별로 바텀애쉬를 분리하는 것이 우선적으로 요구된다. Since the bottom ash is different in purpose depending on the particle size, it is preferable to separate the bottom ash for each application in order to increase the recycling degree of the bottom ash.

대한민국 특허 제10-0946237호(2010. 03. 02.)Korean Patent No. 10-0946237 (2010. 03. 02.)

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 바텀애쉬를 입도별로 분급하여 재활용을 용이하게 함으로써 바텀애쉬의 재활용 확산을 유도하여 바텀애쉬 매립을 위한 매립부지확보문제, 이에 따른 환경오염문제 등을 해결하고, 자원재활용성을 높일 수 있는 새로운 방식의 바텀애쉬 재활용 방법 및 이에 의해 처리되어 고품질을 가지는 경량골재용 바텀애쉬를 제공하는 것이다. Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a method of recycling bottom ash by facilitating recycling by classifying bottom ash by particle size to solve the problem of ensuring landfill for bottom ash burial, And to provide a new method of recycling bottom ash that can improve resource recyclability, and a bottom ash for lightweight aggregate that has been treated thereby and has high quality.

본 발명의 바텀애쉬 재활용 방법은 (1)화력발전소에서 발생되는 바텀애쉬를 수집하는 과정과, (2) 수집된 바텀애쉬 중에서 입도가 0.9mm 이상인 바텀애쉬를 선별하는 과정, (3) 상기 (2)과정에서 선별된 바텀애쉬를 세척하고 건조시키는 과정, (4) 상기 (3)과정을 거친 바텀애쉬를 저장하는 과정, (5) 상기 (4)과정에서 저장된 바텀애쉬를 경량골재, 시멘트 2차제품원료, 또는 요업용 원료로 출하하는 과정, (6) 상기 (2)과정에서 선별하고 남은 입도가 0.9mm 이하인 바텀애쉬를 바텀애쉬를 저장하는 과정 및 (7) 상기 (6)과정에서 저장된 바텀애쉬를 배수층 골재, 레미콘, 또는 시멘트 공장용으로 이차제품으로 출하하는 과정을 포함한다.The bottom ash recycling method of the present invention comprises the steps of (1) collecting bottom ash generated in a thermal power plant, (2) selecting bottom ashes having a particle size of 0.9 mm or more among the collected bottom ashes, (3) (4) storing the bottom ash after the step (3); (5) storing the bottom ash stored in the step (4) in the lightweight aggregate, cement secondary (6) storing the bottom ash in a bottom ash having a particle size of 0.9 mm or less, which is selected in the process (2) and remaining in the bottom ash, and (7) This includes shipment of ash to secondary products for drainage aggregate, concrete mixer, or cement plant.

본 발명의 다른 특징에 따르면, 상기 (2)과정과 (3)과정 사이에는 (9) 자력선별기를 이용하여 미연탄소 함량이 5wt% 이상인 바텀애쉬를 선별하는 과정; 및 (10) 상기 (9)과정에서 선별된 바텀애쉬를 화력발전소용 원료로 출하하는 과정;이 더 추가되며, 상기 (3)과정에서는 상기 (9)과정에서 선별되고 남은 미연탄소 함량이 5wt% 미만인 바텀애쉬를 세척한다. According to another aspect of the present invention, there is provided a process for separating bottom ashes having an unburnt carbon content of 5 wt% or more using the magnetic separator between the steps (2) and (3). And (10) a step of delivering the bottom ash selected in the step (9) as a raw material for a thermal power plant. In the step (3), the residual unburned carbon content selected in the step (9) Of the bottom ash.

본 발명의 또 다른 특징에 따르면, 상기 (3)과정에서는 차아염소산수를 분사하여 바텀애쉬를 세척한다. According to another aspect of the present invention, in the step (3), the bottom ash is washed by spraying hypochlorous acid water.

본 발명의 또 다른 특징에 따르면, 전술한 방법에 의해 처리된 경량골재용 재활용 바텀애쉬가 제공된다. According to another aspect of the present invention, there is provided a recycled bottom ash for lightweight aggregate treated by the above-described method.

이상과 같은 구성을 가지는 본 발명은 바텀애쉬를 입도별로 선별하여 입도에 따른 용도별로 출하함으로써, 바텀애쉬의 재활용을 용이하게 한다. 따라서 본 발명을 이용하면 바텀애쉬 전량을 재활용할 수 있으므로 바텀애쉬를 매립하기 위한 부지확보의 문제점과, 바텀애쉬 매립에 따른 환경오염도 방지된다.The present invention having the above-described structure facilitates the recycling of the bottom ash by sorting the bottom ash by granularity and shipment by application according to the particle size. Therefore, by using the present invention, it is possible to recycle the entire bottom ash, thereby preventing a site for filling the bottom ash and environmental pollution due to bottom ash burial.

또한, 0.9mm 이상의 입도를 가지는 바텀애쉬 중에는 크기별(3mm, 10mm, 24mm 등)로 선별하고 필요한 곳에 즉 성토 또는 복토용의 산업용으로 구별하여 사용할 수 있기 때문에 효율적으로 사용할 수 있는 효과가 있다.In addition, the bottom ash having a particle size of 0.9 mm or more can be efficiently used since it can be sorted by size (3 mm, 10 mm, 24 mm, etc.) and used separately for the industrial purpose for embankment or cover.

또한, 0.9mm 이상의 입도를 가지는 바텀애쉬 중에서 미연탄소의 함량이 높은 바텀애쉬를 선별하고, 선별된 미연탄소의 함량이 높은 바텀애쉬는 화력발전소의 연료로 재사용하도록 함으로써, 화력발전소의 연료절감 및 발전비용을 절감시킬 수 있다. 더욱이 바텀애쉬의 입도가 클수록 미연탄소의 함량이 높을 가능성이 많아지는데, 본 발명은 수집된 모든 바텀애쉬를 대상으로 미연탄소 함량이 높은 바텀애쉬를 선별하지 않고, 1차 선별된 입도가 0.9mm 이상인 바텀애쉬 중에서 미연탄소의 함량이 높은 바텀애쉬를 효율적으로 선별함으로써, 처리시간이 단축되어 생산성이 향상되어 코스트가 절감된다. Bottom ash having a high content of unburned carbon is selected from among bottom ash having a particle size of 0.9 mm or more and bottom ash having a high content of unburned carbon selected is reused as fuel for a thermal power plant, Cost can be reduced. Further, the larger the particle size of the bottom ash, the greater the possibility that the content of unburned carbon is high. However, the present invention can be applied to all the collected bottom ashes without selecting the bottom ash having a high unburned carbon content, By efficiently selecting bottom ash having a high content of unburned carbon among the bottom ash, the processing time is shortened, productivity is improved, and the cost is reduced.

또한, 0.9mm 이상의 입도를 가지는 바텀애쉬 중에서 미연탄소의 함량이 높은 바텀애쉬를 선별하고 남은 바텀애쉬를 경량골재용으로 출하함으로써 미연탄소의 함량이 낮은 고품질의 경량골재를 제공할 수 있는 장점도 가진다.Also, the bottom ash having a high content of unburned carbon among the bottom ash having a particle size of 0.9 mm or more is selected, and the remaining bottom ash is shipped for lightweight aggregate, thereby providing a high quality lightweight aggregate having a low content of unburned carbon .

뿐만 아니라 경량골재용으로 출하되는 바텀애쉬를 차아염소산수로 세척하여 알칼리도가 높은 바텀애쉬를 중화 또는 약 산성화시킴으로써, 바텀애쉬가 콘크리트 조성물 중 실리카질 광물과 반응하여 콘크리트에 균열이 발생되지 않도록 한다. In addition, the bottom ash shipped for lightweight aggregate is washed with hypochlorous acid water to neutralize or weakly acidify the bottom ash with high alkalinity, so that the bottom ash reacts with the silica mineral in the concrete composition to prevent the crack from occurring in the concrete.

이와 같은 구성을 가지는 본 발명은 바텀애쉬의 재활용 확산을 유도함으로써, 자원낭비를 줄이고 환경오염을 방지하는 정부정책에 부합된다. The present invention having such a configuration is compatible with the government policy of reducing waste of resources and preventing environmental pollution by inducing recycling diffusion of bottom ash.

도 1은 본 발명의 제1실시예에 따른 공정도.
도 2는 본 발명의 제2실시에에 따른 공정도
1 is a process diagram according to a first embodiment of the present invention;
Fig. 2 is a process diagram according to a second embodiment of the present invention

이하에서, 본 발명을 더욱 구체적으로 설명한다. Hereinafter, the present invention will be described more specifically.

본 발명의 제1실시예는 도 1에 도시된 바와 같이, 다음과 같은 공정으로 이루어진다. As shown in FIG. 1, the first embodiment of the present invention comprises the following steps.

1) 화력발전소에서 발생되는 바텀애쉬를 수집하는 과정1) The process of collecting the bottom ash from the thermal power plant

화력발전소에서 발생되는 바텀애쉬를 수송 차량에 담아 원료저장탱크에 저장한다. Bottom ash generated from a thermal power plant is stored in a raw material storage tank in a transportation vehicle.

2) 수집된 바텀애쉬 중에서 0.9mm 이상 크기를 갖는 것을 선별하는 과정2) a process of selecting those having a size of 0.9 mm or more among the collected bottom ashes

수집된 바텀애쉬를 페이로더(pay loader)를 이용해 선별기로 투입하여, 입도가 0.9mm 이상인 바텀애쉬를 체가름으로 선별한다.The collected bottom ash is introduced into a sorter using a pay loader, and a bottom ash having a particle size of 0.9 mm or more is sieved.

일반적으로 바텀애쉬는 화력 발전소의 보일러 하부로 낙하된 것을 냉각수로 냉각하여 입도 10mm 이하로 분쇄하여 배출되기 때문에 미분립이 과도하게 많이 함유되어 있다. 바텀애쉬를 자연사(모래)와 비교하더라도 입도가 0.9mm 이하의 미립분이 과도하게 많이 함유되어 있어서 사용범위가 제한된다. 따라서 본 과정에서는 자연사에 비해 과도하게 미립자인 입도가 0.9mm 미만인 바텀애쉬를 별도 보관하고, 자연사와 입도가 유사한 범위인 입도가 0.9mm 이상인 바텀애쉬를 선별한다. Generally, the bottom ash is cooled by cooling water to the lower part of the boiler of the thermal power plant, and is crushed to a particle size of 10 mm or less. Therefore, the bottom ash is unduly divided. Even though the bottom ash is compared with natural sand (sand), the use range is limited because it contains an excessive amount of fine particles having a particle size of 0.9 mm or less. Therefore, in this process, bottom ash with a particle size of less than 0.9 mm is stored separately and bottom ash having a particle size of 0.9 mm or more, which is a similar range of natural history and particle size, is selected.

입도가 0.9mm 미만인 바텀애쉬는 특정 장소내에서 보관하고 있다가 필요한 경우 사용하면 된다.Bottom ash having a particle size of less than 0.9 mm may be stored in a specific place and used if necessary.

예를 들면 공장내의 야적장에 바텀 애쉬가 보관되고 있는 것은 사용중인 것으로 판단할 수가 있고, 공장외 야적장에 보관하고 있는 것은 ?무으로 이용된다는 것으로 해석할 수가 있다.For example, it can be judged that the bottom ash is stored in a yard in a factory, and that it is being used.

따라서 이와 같이 선별된 바텀애쉬는 자연사를 대체하여 후술하는 바와 같이, 경량골재, 시멘트 2차제품 원료, 요업용 원료 등으로 사용이 적합하다.Thus, the bottom ash thus selected is suitable for use as a lightweight aggregate, a secondary raw material for cement, and a raw material for ceramics, as described later, in place of natural history.

3) 선별된 바텀애쉬를 세척 및 탈수하는 과정3) The process of washing and dehydrating the selected bottom ash

선별된 바텀애쉬를 세척하여 바텀애쉬에 포함된 염분, 오염물질, 불순물 등을 제거하고 탈수한다. 물론, 이때 발생되는 폐수는 정수처리되어 배출된다. The selected bottom ash is washed to remove the salts, contaminants, impurities, etc. contained in the bottom ash and dehydrate. Of course, the wastewater generated at this time is purified and discharged.

이와 같이 세척한 바텀애쉬는 저장탱크에 저장한다.The bottom ash thus washed is stored in a storage tank.

입도가 0.9mm 이상인 바텀애쉬는 경량골재 또는 흄관, 멘홀, 파일 등과 같은 시멘트 2차제품 원료, 요업용 원료 등으로 사용이 적합하다. 따라서 저장탱크에 저장된 입도가 0.9mm 이상인 바텀애쉬는 이러한 용도로 출하된다. Bottom ash having a particle size of 0.9 mm or more is suitable for use as a cement secondary raw material such as a lightweight aggregate or a hume pipe, a menhole, a pile, and a raw material for ceramics. Therefore, bottom ash with a particle size of 0.9 mm or more stored in a storage tank is shipped for this purpose.

특히, 바텀애쉬는 고온의 연소과정에서 생성되어 고온에서 안정한 화합물이기 때문에 내화성이 있고, 기공률이 기타 골재에 비해 현저히 높아서 단열성이 우수하며, 내화피복재로서 주로 사용되고 있는 펄라이트, 질석에 비해 강도가 우수한 장점도 가지므로, 본 과정에서 선별된 바텀애쉬는 내화피복재용 골재로 최적의 조건을 가진다. Particularly, bottom ash is a compound which is produced in a high-temperature combustion process and is stable at high temperature. Therefore, it has fire resistance, has a porosity remarkably higher than other aggregates and is excellent in heat insulation, and is superior in strength to perlite and vermiculite The bottom ash selected in this process has optimum conditions as the aggregate for the refractory coating material.

4) 입도 0.9mm 이상의 바텀애쉬를 선별하고 남은 바텀애쉬를 회수하는 과정 4) Selecting the bottom ash with a particle size of 0.9mm or more and recovering the remaining bottom ash

입도가 0.9mm 이상인 바텀애쉬를 선별하고 남은 입도 0.9mm 미만의 바텀애쉬를 회수한다. Bottom ashes having a particle size of 0.9 mm or more are selected and bottom ashes having a particle size of less than 0.9 mm are recovered.

5) 회수된 입도 0.9mm 미만의 바텀애쉬를 보관하는 과정5) Process of storing bottom ash recovered less than 0.9mm in particle size

입도 0.9mm 미만의 바텀애쉬는 세척이 필요없으므로 별도 보관하고 있다가 배수층 골재, 레미콘, 또는 시멘트 공장용으로 출하한다. 바람직하게는 배수층 골재로 사용하는 것이 가장 적합하므로 저장된 바텀애쉬를 폐기물 매립장 등의 배수층 골재로 출하한다. Bottom ash with particle size less than 0.9mm does not need to be cleaned and should be stored separately and then shipped for drainage aggregate, remicon, or cement factory. Preferably, the bottom ash is stored as a drainage aggregate such as a waste landfill.

이와 같이 본 실시예에서는 바텀애쉬를 입도별로 선별하여, 입도에 따른 용도별로 출하함으로써, 바텀애쉬의 재활용을 용이하게 하여 재활용도를 높일 수 있다. 따라서 종래 바텀애쉬의 매립을 위한 매립부지확보 및 바텀애쉬 매립에 다른 환경오염 등의 문제를 해결할 수 있다. As described above, in this embodiment, the bottom ash is selected for each particle size and shipped for each application according to the particle size, thereby facilitating recycling of the bottom ash, thereby increasing the degree of recycling. Therefore, it is possible to solve problems such as securing the landfill for burial of the conventional bottom ash and other environmental pollution by buried bottom ash.

이하에서는 본 발명의 다른 실시예를 설명하되, 전술한 실시예와 동일한 구성 및 효과에 대해서는 설명을 생략한다. Hereinafter, other embodiments of the present invention will be described, and the same structures and effects as those of the above-described embodiments will not be described.

본 실시예에서는 상기 실시예에서 선별된 입도가 0.9mm 이상인 바텀애쉬 중에서 미연탄소(unburned carbon)의 함량이 5wt% 이상인 바텀애쉬를 선별한다. 이 과정은 10,000 gauss 정도의 자속밀도를 가지는 자력선변기를 이용하여 이루어진다. In this embodiment, the bottom ash having the unburned carbon content of 5 wt% or more among the bottom ashes having a particle size of 0.9 mm or more selected in the above embodiment is selected. This process is accomplished by using a magnetic line toilet with magnetic flux density of about 10,000 gauss.

미연탄소가 많이 함유된 바텀애쉬는 강열감량(Loss ignition)이 크기 때문에 화력발전소 연료로 재사용이 가능하다. 따라서 선별된 미연탄소 함량이 5wt% 이상인 바텀애쉬는 화력발전소로 회수시키고, 석탄연료와 혼합하여 발전연료로 사용한다. Bottom ash, which contains much unburned carbon, can be reused as fuel for thermal power plant because of its large loss ignition. Therefore, the bottom ash having the selected unburned carbon content of 5 wt% or more is recovered as a thermal power plant and mixed with coal fuel to be used as a power generation fuel.

그리고, 미연탄소 함량이 5wt% 이상인 바텀애쉬를 선별하고 남은 바텀애쉬, 즉, 미연탄소 함량이 5wt% 미만인 바텀애쉬를 세척 및 건조시켜서, 재활용을 위해 저장 또는 출하시킨다. Then, the bottom ash having an unburned carbon content of 5 wt% or more is selected and the remaining bottom ash, that is, the bottom ash having an unburned carbon content of less than 5 wt% is washed and dried and stored or shipped for recycling.

본 실시예와 같이 입도가 0.9mm 이상인 바텀애쉬 중에서 미연탄소 함량이 5 wt% 이상인 바텀애쉬를 선별하여 화력발전소 연료로 재사용함에 따라 화력발전소의 연료를 절감할 수 있고 발전비용을 절감시키는 효과를 얻을 수 있다.As in the present embodiment, bottom ash having an unburned carbon content of 5 wt% or more among the bottom ash having a particle size of 0.9 mm or more is selected and reused as a fuel for a thermal power plant, so that fuel of the thermal power plant can be saved and power generation cost can be reduced .

그뿐만 아니라, 미연탄소의 함량이 높은 바텀애쉬를 건축재료로 활용시 콘크리트 흑화 및 콘크리트에 사용되는 약품을 흡착하여 강도저하 등의 문제를 일으킬 우려가 높아지므로 바텀애쉬를 콘크리트용 골재로 활용시 미연탄소의 함량을 5wt% 이하(KS F 4570)로 규정하고 있다. 따라서 본 실시예와 같이 미연탄소의 함량이 5wt% 이상인 바텀애쉬를 선별하고 미연탄소의 함량이 낮은 바텀애쉬를 경량골재용으로 출하함으로써 경량골재로서의 적합성도 높이는 효과를 얻을 수 있다. In addition, when bottom ash having a high content of unburned carbon is used as a building material, it becomes more likely to cause problems such as reduction in strength by adsorbing the chemicals used for concrete blackening and concrete. Therefore, when using the bottom ash as a concrete aggregate, The content of carbon is less than 5 wt% (KS F 4570). Therefore, as in the present embodiment, the bottom ash having a content of unburned carbon of 5 wt% or more is selected, and the bottom ash having a low content of unburned carbon is shipped for lightweight aggregate, thereby improving the suitability as a lightweight aggregate.

또한, 일반적으로 바텀애쉬의 입도가 클수록 미연탄소의 함량이 높을 가능성이 높아지므로, 수집된 모든 바텀애쉬를 대상으로 하여 미연탄소의 함량에 따른 선별을 하는 비효율적이다. 따라서 본 실시예에서는 상대적으로 미연탄소 함량이 높을 가능성이 큰 입도가 큰 바텀애쉬 중에서 미연탄소의 함량이 5wt% 이상인 바텀애쉬를 선별함으로써, 선별시간이 단축되어 생산성이 향상된다. In general, the larger the size of the bottom ash, the higher the possibility that the content of unburned carbon is high. Therefore, it is inefficient to perform the sorting according to the content of unburned carbon in all collected bottom ashes. Therefore, in this embodiment, by selecting the bottom ash having a content of unburned carbon of 5 wt% or more among the large-sized bottom ash having a relatively high unburned carbon content, the selection time is shortened and the productivity is improved.

본 발명의 제3실시예에 따르면, 상기 바텀애쉬를 세척하는 과정에서는 차아염소산수를 이용하여 세척한다.According to the third embodiment of the present invention, the process of washing the bottom ash is performed using hypochlorous acid water.

통상적으로 바텀애쉬의 pH가 9.0~9.5로서 알칼리성을 갖기 때문에 이러한 바텀애쉬를 콘크리트 조성물 중 경량골재로 사용하면 바텀애쉬가 콘크리트 조성물 중 실리카질 광물과 반응하여 콘크리트에 균열이 발생될 우려가 높아진다. Generally, the bottom ash has an alkaline pH of 9.0 to 9.5. Therefore, when such bottom ash is used as a lightweight aggregate in a concrete composition, there is a high possibility that the bottom ash reacts with the silica mineral in the concrete composition to cause cracks in the concrete.

본 실시예에서는 이러한 문제점을 해결하기 위해 바텀애쉬를 차아염소산수로 세척함으로써, 바텀애쉬를 중화 또는 약 산성화시킨다. In this embodiment, the bottom ash is neutralized or slightly acidified by washing the bottom ash with hypochlorous acid water to solve this problem.

차아염소산수(hypochlorous acid)는 묽은 염산을 전기분해하여 생성되는 염소를 물과 혼합하는 방법으로 간단하게 제조될 수 있으며, 차아염소산수의 제조방법은 공지된 것인 바 상세한 설명은 생략한다. 차아염소산은 우리 몸의 혈액 중에서도 생성되는 안전한 물질이며, 살균력도 우수한 장점을 가진다. 따라서 이러한 차아염소산수로 바텀애쉬를 세척하면 바텀애쉬를 중화 또는 약 산성화시킬 수 있는 것은 물론, 살균효과도 얻을 수 있다. Hypochlorous acid can be easily prepared by mixing chlorine produced by electrolysis of dilute hydrochloric acid with water, and a method for producing hypochlorous acid water is well known and will not be described in detail. Hypochlorous acid is a safe substance that is produced in the blood of our body and has an advantage of excellent sterilizing power. Therefore, when the bottom ash is washed with such hypochlorous acid water, the bottom ash can be neutralized or acidified, and a sterilizing effect can be obtained.

Claims (5)

(1) 화력발전소에서 발생되는 바텀애쉬를 수집하는 과정;
(2) 수집된 바텀애쉬 중에서 입도가 0.9mm 이상인 바텀애쉬를 선별하는 과정;
(3) 상기 (2)과정에서 선별된 바텀애쉬를 세척하고 건조시키는 과정;
(4) 상기 (3)과정을 거친 바텀애쉬를 저장하는 과정;
(5) 상기 (4)과정에서 저장된 바텀애쉬를 경량골재, 시멘트 2차제품원료, 또는 요업용 원료로 출하하는 과정;
(6) 상기 (2)과정에서 선별하고 남은 입도가 0.9mm 이하인 바텀애쉬를 바텀애쉬를 저장하는 과정; 및
(7) 상기 (6)과정에서 저장된 바텀애쉬를 이차제품으로 출하하는 과정;을 포함하는 것을 특징으로 하는 바텀애쉬 재활용 방법.
(1) the process of collecting bottom ash generated in a thermal power plant;
(2) selecting bottom ashes having a particle size of 0.9 mm or more among collected bottom ashes;
(3) washing and drying the bottom ash selected in the step (2);
(4) storing the bottom ash after the step (3);
(5) shipment of the bottom ash stored in the step (4) to lightweight aggregate, cement secondary product raw material or ceramics raw material;
(6) storing the bottom ash in the bottom ash selected in the step (2) and having a remaining particle size of 0.9 mm or less; And
(7) A method for recycling a bottom ash recycled from a secondary product, the method comprising:
제1항에 있어서,
상기 (2)과정과 (3)과정 사이에는,
(9) 자력선별기를 이용하여 미연탄소 함량이 5wt% 이상인 바텀애쉬를 선별하는 과정; 및
(10) 상기 (9)과정에서 선별된 바텀애쉬를 화력발전소용 원료로 출하하는 과정;이 더 추가되며,
상기 (3)과정에서는 상기 (9)과정에서 선별되고 남은 미연탄소 함량이 5wt% 미만인 바텀애쉬를 세척하는 것을 특징으로 하는 바텀애쉬 재활용 방법.
The method according to claim 1,
Between the processes (2) and (3)
(9) selecting a bottom ash having an unburned carbon content of 5 wt% or more by using a magnetic separator; And
(10) a step of delivering the bottom ash selected in the step (9) as a raw material for a thermal power plant,
In the step (3), the bottom ash selected in the step (9) and having a remaining unburned carbon content of less than 5 wt% is washed.
제1항에 있어서,
상기 (3)과정에서는 차아염소산수를 분사하여 바텀애쉬를 세척하는 것을 특징으로 하는 바텀애쉬 재활용 방법.
The method according to claim 1,
Wherein the bottom ash is washed by injecting hypochlorous acid water in the step (3).
(1) 화력발전소에서 발생되는 바텀애쉬를 수집하는 과정;
(2) 수집된 바텀애쉬 중에서 입도가 0.9mm 이상인 바텀애쉬를 선별하는 과정;
(3) 자력선별기를 이용하여 상기 (2)과정에서 선별된 바텀애쉬 중에서 미연탄소 함량이 5wt% 이상인 바텀애쉬를 선별하여 제거하고, 미연탄소의 함량이 5wt% 미만인 바텀애쉬를 수거하는 과정;
(4) 상기 (3)과정에서 수거된 바텀애쉬를 차아염소산수로 세척하여 바텀애쉬를 중화 또는 약 산성화시키는 과정;
(5) 상기 (4)과정에서 세척된 바텀애쉬를 건조시키는 과정;
(6) 상기 (5)과정에서 건조된 바텀애쉬를 저장하는 과정; 및
(7) 상기 저장된 바텀애쉬를 경량골재용으로 출하하는 과정;을 포함하는 것을 특징으로 하는 바텀애쉬를 경량골재용으로 재활용하는 방법.
(1) the process of collecting bottom ash generated in a thermal power plant;
(2) selecting bottom ashes having a particle size of 0.9 mm or more among collected bottom ashes;
(3) collecting bottom ashes having a content of unburned carbon of less than 5 wt% by selectively removing bottom ashes having an unburned carbon content of 5 wt% or more among the bottom ashes selected in the step (2) using a magnetic separator;
(4) washing the bottom ash collected in the step (3) with hypochlorous acid water to neutralize or weakly acidify the bottom ash;
(5) drying the bottom ash washed in the step (4);
(6) storing the dried bottom ash in the step (5); And
And (7) shipping the stored bottom ash for lightweight aggregate. The method of recycling the bottom ash for lightweight aggregate.
제4항에 기재된 방법에 의해 처리되어,
입도가 0.9mm 이상이고, 미연탄소 함량이 미연탄소의 함량이 5wt% 이며, 차아염소산수에 의해 중화 또는 약 산성화 된 것을 특징으로 하는 경량골재용 재활용 바텀애쉬.
A process for the preparation of a compound according to claim 4,
A recycled bottom ash for a lightweight aggregate characterized by a particle size of 0.9 mm or more, an unburned carbon content and an unburned carbon content of 5 wt% and being neutralized or weakly acidified by hypochlorous acid water.
KR1020170109165A 2017-08-29 2017-08-29 Manufacturing method of bottom ash and bottom thereby the same that KR20190023410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020170109165A KR20190023410A (en) 2017-08-29 2017-08-29 Manufacturing method of bottom ash and bottom thereby the same that

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170109165A KR20190023410A (en) 2017-08-29 2017-08-29 Manufacturing method of bottom ash and bottom thereby the same that

Publications (1)

Publication Number Publication Date
KR20190023410A true KR20190023410A (en) 2019-03-08

Family

ID=65800704

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020170109165A KR20190023410A (en) 2017-08-29 2017-08-29 Manufacturing method of bottom ash and bottom thereby the same that

Country Status (1)

Country Link
KR (1) KR20190023410A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102049466B1 (en) 2019-05-15 2019-11-27 서울대학교산학협력단 Manufacturing method of hollow lightweight aggregate using nitrogen gases
KR102221406B1 (en) * 2020-04-24 2021-03-02 주식회사 국제플라텍 Method for manufacturing constructional block products using daily waste and business place waste incineration facility bottom ash)
KR102331845B1 (en) 2020-07-08 2021-11-29 에코랩스 주식회사 recycling method of bottom ash

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100946237B1 (en) 2008-04-29 2010-03-09 바텀애쉬콘주식회사 Compositions and Method for production of ready mix concrete by using bottom ash as aggregates

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100946237B1 (en) 2008-04-29 2010-03-09 바텀애쉬콘주식회사 Compositions and Method for production of ready mix concrete by using bottom ash as aggregates

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102049466B1 (en) 2019-05-15 2019-11-27 서울대학교산학협력단 Manufacturing method of hollow lightweight aggregate using nitrogen gases
KR102221406B1 (en) * 2020-04-24 2021-03-02 주식회사 국제플라텍 Method for manufacturing constructional block products using daily waste and business place waste incineration facility bottom ash)
KR102331845B1 (en) 2020-07-08 2021-11-29 에코랩스 주식회사 recycling method of bottom ash

Similar Documents

Publication Publication Date Title
Junaid et al. Lightweight concrete from a perspective of sustainable reuse of waste byproducts
Rashad Cementitious materials and agricultural wastes as natural fine aggregate replacement in conventional mortar and concrete
CN112125633B (en) C30 grade full-solid waste concrete and preparation method thereof
JP2020503225A (en) Lightweight and high-strength ceramic particles and method for producing the same
JP5110446B2 (en) Method for producing artificial lightweight aggregate containing bottom ash
CN102046558B (en) Recovery and upgrading process of incinerator bottom ash prom municipal solid waste
CN109516707B (en) Preparation method of recycled aggregate for inhibiting alkali-aggregate reaction
KR20060102756A (en) A concrete admixture using waste tailing and methode of thereof
KR20190023410A (en) Manufacturing method of bottom ash and bottom thereby the same that
CN104190690A (en) Method for preparing chlorine-removal alkali residue mixture by utilizing alkali residues through ammonia-soda process and application of chlorine-removal alkali residue mixture
CN110204275B (en) Sludge waste concrete mortar non-sintered ceramsite and preparation method thereof
KR101257447B1 (en) A method for preparing banking material using waste resources
Alghamdi A review of cementitious alternatives within the development of environmental sustainability associated with cement replacement
US20090170977A1 (en) Building board made of municipal refuse and agricultural plant wastes and manufacturing method thereof
EP3371125B1 (en) Process for producing a building material obtained from an alkaline activation of sawing sludge of stone materials
CN105272008A (en) Environment-friendly multifunctional brick and preparation method thereof
Onyenokporo Supplementary cementitious materials as sustainable partial replacement for cement in the building industry
Villagrán-Zaccardi et al. Effect of wastes as supplementary cementitious materials on the transport properties of concrete
CN107235619A (en) A kind of solidification processing method of bed mud in river
Ambrus et al. Utilisation and quality management of power plant fly ash
KR102546721B1 (en) Manufacturing method of concrete additives using industrial wastewater and dust waste
KR100502070B1 (en) Inorganic binder comprising industrial by-products, and mortar and concrete using the same
Song et al. Investigation of sisal fiber incorporation on engineering properties and sustainability of lightweight aggregates produced from municipal solid waste incinerated bottom ash
KR102449553B1 (en) Manufacturing, production and construction method of soil improvement material for recycling oyster shells
KR100675594B1 (en) Method and composite for manufacture of cement

Legal Events

Date Code Title Description
A201 Request for examination
A302 Request for accelerated examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
J201 Request for trial against refusal decision
J301 Trial decision

Free format text: TRIAL NUMBER: 2018101003737; TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20180907

Effective date: 20190923