KR102362474B1 - Apparatus and method for manufacturing activated carbon - Google Patents

Apparatus and method for manufacturing activated carbon Download PDF

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KR102362474B1
KR102362474B1 KR1020210119433A KR20210119433A KR102362474B1 KR 102362474 B1 KR102362474 B1 KR 102362474B1 KR 1020210119433 A KR1020210119433 A KR 1020210119433A KR 20210119433 A KR20210119433 A KR 20210119433A KR 102362474 B1 KR102362474 B1 KR 102362474B1
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activated carbon
rotary kiln
raw material
furnace
moisture content
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KR1020210119433A
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Korean (ko)
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박윤기
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박윤기
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/39—Apparatus for the preparation thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
    • C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel

Abstract

The present invention relates to an activated carbon manufacturing device and method to completely solve problems such as scattering of activated carbon, floating on the surface of wastewater, and the like. According to the present invention, the activated carbon manufacturing device comprises: a rotary sintering furnace (100); a refractory furnace (20) supplying hot air generated by a burner (10) to the inlet side of the rotary sintering furnace (100); a raw material supply means (30); and an activated carbon collection furnace (80) fixed to the outlet side of the rotary sintering furnace (100), including a suction means (60) at the top, and in which an activated carbon collection hopper (70) is installed at the bottom.

Description

활성탄의 제조장치 및 제조방법{APPARATUS AND METHOD FOR MANUFACTURING ACTIVATED CARBON}Apparatus and manufacturing method of activated carbon {APPARATUS AND METHOD FOR MANUFACTURING ACTIVATED CARBON}

본 발명은 활성탄의 제조장치 및 제조방법에 관한 것으로, 더욱 상세하게는 함수율이 37~64%에 이르는 활성탄을 제조하도록 구성되는 활성탄의 제조장치 및 제조방법에 관한 것이다.The present invention relates to an apparatus and method for manufacturing activated carbon, and more particularly, to an apparatus and method for manufacturing activated carbon configured to produce activated carbon having a moisture content of 37 to 64%.

일반적으로, 활성탄은 자체의 공극구조가 매우 발달하여 대기나 수중의 오염입자에 대한 흡착성이 뛰어난 탄화물질로서, 목질계(야자각, 코코넛, 대나무 등) 또는 광물질계(토탄, 갈탄, 석탄 등) 원료(이하, "원료"라 한다)를 소성로(회전로 또는 다단상로)에서 고온의 수증기로 활성화(activating)하여 제조되는데, 이때 활성탄은 주로 탄소로 구성된 무정형의 물질이고 비표면적과 흡착능이 우수하여 다양한 목적을 위한 흡착제로서 이용되는 다공성 탄질물질이다.In general, activated carbon is a carbonized material with excellent adsorption to polluting particles in the atmosphere or water due to its very developed pore structure. It is manufactured by activating raw materials (hereinafter referred to as “raw materials”) with high-temperature steam in a kiln (rotary furnace or multi-stage furnace). In this case, activated carbon is an amorphous material mainly composed of carbon and has excellent specific surface area and adsorption capacity. Therefore, it is a porous carbonaceous material used as an adsorbent for various purposes.

여기서, 활성탄은 발달된 공극을 이용하여 정제, 유해물질 제거, 추출, 분리 등 화학공업분야에 활용될 뿐만 아니라, 촉매나 촉매 담체용도 특히, 연료전지의 산화환원 촉매로의 활용도 가능하다.Here, activated carbon is not only used in chemical industries such as purification, removal of harmful substances, extraction, and separation by using the developed pores, but also can be used as a catalyst or catalyst carrier, especially as a redox catalyst in a fuel cell.

이때, 활성탄은 공극을 활성화하기 위하여 활성화제(KOH, NaOH,Na2CO3,ZnCl2,MgCl2,H3PO4)로 처리한 후, 소성로에서 400~1000℃의 스팀으로 처리하여 활성화시키거나, 또는 하기의 특허문헌1과 같이 소성로에서 400~1000℃의 스팀으로 처리한 후, 암모니아 등과 같은 환원성 가스로 처리하여 활성화시키기도 한다.At this time, the activated carbon is treated with an activator (KOH, NaOH, Na 2 CO 3 , ZnCl 2 , MgCl 2 ,H 3 PO 4 ) in order to activate the pores, and then activated by treatment with steam at 400~1000℃ in a kiln. Or, as in Patent Document 1 below, after treatment with steam at 400 to 1000° C. in a kiln, treatment with a reducing gas such as ammonia is used to activate it.

이처럼, 종래에는 원료를 소성로에서 400~1000℃에 이르는 고온의 스팀으로 가열 처리함으로써 활성탄으로 활성화하게 되는데, 이때 활성탄은 통상적으로 10%이하의 함수율을 갖도록 제조된다.As such, in the prior art, the raw material is activated as activated carbon by heat-treating it with steam at a high temperature ranging from 400 to 1000° C. in a kiln. At this time, the activated carbon is typically manufactured to have a moisture content of 10% or less.

그러나, 10%이하의 함수율을 갖도록 제조된 활성탄은 포장과 보관 그리고 운반시에 쉽게 누출되고 살포시에도 심하게 비산되어 작업자 및 주위환경을 오염시키면서 광범위한 환경오염을 유발하게 되고, 가벼운 분말입자가 표면장력에 의해 폐수면에 부유되면서 침강되지 않아 정수효율을 현저히 저하시키는 등의 사용상 치명적인 문제가 있다.However, activated carbon manufactured to have a moisture content of 10% or less easily leaks during packaging, storage, and transportation, and scatters heavily during spraying, contaminating workers and the surrounding environment, causing widespread environmental pollution, and light powder particles are affected by surface tension. There is a fatal problem in use, such as significantly lowering the water purification efficiency because it does not settle while floating on the waste water surface.

종래에는 상온의 가수(加水)공정을 통해 활성탄의 함수율을 30%이상 높여서 활성탄의 자중을 보다 무겁게 제조함으로써 활성탄의 누출과 비산을 줄이고, 폐수에 살포된 활성탄의 침강속도를 높여서 정수효율을 향상시키도록 시도하고 있다.Conventionally, by increasing the moisture content of activated carbon by 30% or more through the hydrolysis process at room temperature to make the weight of activated carbon heavier, the leakage and scattering of activated carbon is reduced, and the sedimentation rate of activated carbon sprayed in wastewater is increased to improve water purification efficiency. are trying to

그러나, 종래의 활성탄은 상온에서 진행되는 가수공정을 통해 함수율이 30%에 이르도록 가수를 하게 되면 입자가 점성을 가지면서 서로 엉기게 되고, 결국 다양한 크기의 덩어리를 형성하면서 활성탄으로서의 기능을 상실하게 된다.However, when the conventional activated carbon is added to a water content of 30% through a hydrolysis process conducted at room temperature, the particles agglomerate with viscosity and eventually lose their function as activated carbon while forming lumps of various sizes. do.

요컨대, 종래의 활성탄은 소성로의 400~1000℃에 이르는 스팀분위기에서 활성화됨으로써 도1과 같이 그 입자의 세공직경(pore diameter)이 주로 2000Å이상의 공극이 발달되어 있음을 확인할 수 있다. In short, it can be confirmed that the conventional activated carbon is activated in a steam atmosphere ranging from 400 to 1000° C. of the kiln, so that pores having a pore diameter of 2000 Å or more are mainly developed as shown in FIG. 1 .

이처럼 종래 활성탄은 그 공극의 세공직경이 2000Å이상으로 과대하게 활성화됨으로써 물의 흡착과 탈착이 용이하게 되고, 결국 물의 흡착능이 떨어지면서 가수작업에도 불구하고 그 함수율이 20%를 넘을 수 없을뿐만 아니라 가수공정에서 함수율 30%에 이르는 물을 혼합할 경우 입자의 공극에서 물을 흡착하지 못하면서 입자들이 자체 점성에 의해 오히려 서로 들러붙어 덩어리를 이루는 치명적인 문제가 있다.As such, in conventional activated carbon, the pore diameter of the pores is excessively activated to 2000 Å or more, so that the adsorption and desorption of water is facilitated. In the case of mixing water with a moisture content of 30%, there is a fatal problem in that the particles do not adsorb water in the pores of the particles and the particles rather stick to each other due to their own viscosity and form a lump.

결국, 종래 활성탄은 원료를 소성로에서 활성화한 후, 별도의 가수공정에도 불구하고 그 함수율이 약 20%에 불과하여 여전히 비산과 부유 등의 문제가 해결되지 못하고 있다.After all, the conventional activated carbon has only about 20% moisture content after activating the raw material in a kiln, despite a separate hydroprocessing process, so problems such as scattering and floating are still not solved.

따라서, 본 출원인은 가수공정을 거쳐 79~88%의 함수율을 갖도록 제조된 원료를 회전소성로에서 소성공정을 통해 37~64%의 함수율을 갖도록 활성탄을 제조할 수 있는 활성탄의 제조장치 및 제조방법을 제안하고자 한다.Therefore, the applicant of the present application provides an apparatus and method for producing activated carbon capable of producing activated carbon to have a moisture content of 37 to 64% through a calcination process in a rotary kiln of raw materials manufactured to have a moisture content of 79 to 88% through a hydrolysis process. I would like to suggest

1. 등록특허공보 제10-0364984호(흡착능이 우수한 활성탄의 제조방법)1. Registered Patent Publication No. 10-0364984 (Manufacturing method of activated carbon with excellent adsorption capacity) 2. 등록특허공보 제10-1259517호(무연탄계 고표면적 분말 활성탄을 제조하는 방법)2. Registered Patent Publication No. 10-1259517 (Method for producing anthracite-based high surface area powder activated carbon) 3. 등록특허공보 제10-1660313호(활성탄의 제조방법)3. Registered Patent Publication No. 10-1660313 (Manufacturing method of activated carbon) 4. 등록특허공보 제10-1885249호(활성탄의 제조방법)4. Registered Patent Publication No. 10-1885249 (Manufacturing method of activated carbon) 5. 등록특허공보 제10-0753425호 (폐목재를 이용한 활성탄 제조장치)5. Registered Patent Publication No. 10-0753425 (Activated carbon manufacturing device using waste wood)

본 발명은 상기한 종래기술의 문제를 개선하기 위하여 안출된 것으로, 79~88%의 함수율을 갖도록 가수되면서 연화된 상태의 원료를 회전소성로에서 소성함으로써 함수율 37~64%의 활성탄으로 제조할 수 있고, 활성탄의 충분한 함수율에 의해 원하는 입자의 자중을 확보할 수 있어 활성탄의 비산 및 폐수면부유 등과 같은 문제를 해소하도록 구성되는 활성탄의 제조장치 및 제조방법을 제공함에 그 목적이 있다.The present invention has been devised to improve the problems of the prior art, and by calcining a raw material in a softened state while being hydrolyzed to have a moisture content of 79 to 88% in a rotary kiln, it can be manufactured into activated carbon having a moisture content of 37 to 64%, It is an object of the present invention to provide an apparatus and method for producing activated carbon, which are configured to solve problems such as scattering of activated carbon and floating waste water surface by securing the desired particle weight by sufficient moisture content of the activated carbon.

상기한 목적을 달성하기 위하여 본 발명은 지지베어링에 의해 하향 경사지게 지지되면서 회전구동수단에 의해 회전되고 내주면에 소성버켓이 축방향으로 길게 고정되면서 원주방향으로 서로 일정간격을 이루도록 고정되는 회전소성로와; 상기 회전소성로의 입구측에 고정되면서 버너에 의해 조성된 열풍을 상기 회전소성로의 입구측으로 공급하는 내화로와; 상기 내화로의 상부에 고정되면서 원료를 상기 회전소성로의 입구측에 공급하는 원료공급수단과; 상기 회전소성로의 출구측에 고정되면서 상부에 석션수단이 구비되고, 하부에 활성탄수거호퍼가 설치되는 활성탄수거로;로 구성되는 것을 특징으로 하는 활성탄의 제조장치를 제공하게 된다.In order to achieve the above object, the present invention provides a rotary kiln which is rotated by a rotation driving means while being supported obliquely downward by a support bearing and fixed to form a predetermined distance in the circumferential direction while a plastic bucket is fixed long in the axial direction on the inner circumferential surface; a refractory furnace which is fixed to the inlet side of the rotary kiln and supplies hot air generated by a burner to the inlet side of the rotary kiln; a raw material supply means fixed to an upper portion of the refractory furnace and supplying raw materials to an inlet side of the rotary kiln; It provides an apparatus for producing activated carbon, comprising: an activated carbon collection furnace that is fixed to the outlet side of the rotary kiln, a suction means is provided on the upper portion, and an activated carbon collection hopper is installed on the lower portion.

또한, 본 발명은 원료를 79~88%의 함수율을 갖도록 가수한 후, 상기 원료를 회전소성로에서 소성하여 함수율 37~64%의 활성탄으로 제조하도록 구성되는 것을 특징으로 하는 활성탄의 제조방법을 제공하게 된다.In addition, the present invention provides a method for producing activated carbon, characterized in that the raw material is hydrolyzed to have a moisture content of 79 to 88%, and then the raw material is calcined in a rotary kiln to produce activated carbon having a moisture content of 37 to 64%. do.

이상과 같이 구성되는 본 발명은 79~88%의 함수율을 갖는 연화된 원료를 회전소성로에서 소성함으로써 함수율 37~64%의 활성탄을 제조할 수 있고, 함수율의 증가에 의한 활성탄의 자중을 높일 수 있어 활성탄의 비산과 폐수면의 부유 등과 같은 문제를 완벽하게 해결할 수 있으며, 종국적으로 열악한 작업환경을 개선하는 동시에 주위의 환경오염을 방지하고 활성탄의 흡착성능을 현저히 개선시킬 수 있는 등의 효과를 제공하게 된다.The present invention configured as described above can produce activated carbon having a moisture content of 37 to 64% by calcining a softened raw material having a moisture content of 79 to 88% in a rotary kiln, and increase the weight of the activated carbon by increasing the moisture content, It can completely solve problems such as scattering of activated carbon and floating of the waste water surface, and ultimately provides effects such as improving the poor working environment, preventing environmental pollution, and remarkably improving the adsorption performance of activated carbon. do.

도1은 종래 활성탄을 전자현미경에서 15,000의 배율로 관찰한 사진,
도2는 본 발명에 따른 활성탄의 제조장치를 나타내는 구성도,
도3은 도2의 X-X 단면도,
도4는 본 발명에 따른 활성탄의 제조장치중 소성버켓을 나타내는 사시도,
도5는 본 발명에 따른 활성탄을 전자현미경에서 15,000의 배율로 관찰한 사진이다.1 is a photograph of conventional activated carbon observed with an electron microscope at a magnification of 15,000;
2 is a block diagram showing an apparatus for producing activated carbon according to the present invention;
3 is a XX cross-sectional view of FIG. 2;
4 is a perspective view showing a firing bucket in the apparatus for manufacturing activated carbon according to the present invention;
5 is a photograph of the activated carbon according to the present invention observed with an electron microscope at a magnification of 15,000.

이하에서는 첨부된 도면을 참조하여 본 발명의 구성을 보다 구체적으로 설명하기로 한다.Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.

본 발명에 따른 활성탄의 제조장치는 도2에 도시된 바와 같이 회전소성로(100)가 지지베어링(40-1,40-2)에 의해 하향 경사지도록 지지되면서 회전구동수단(50-1,50-2)에 의해 회전되도록 설치되어 있다.As shown in FIG. 2, in the apparatus for producing activated carbon according to the present invention, the rotary kiln 100 is supported so as to be inclined downward by the support bearings 40-1 and 40-2 while rotating driving means 50-1, 50- 2) is installed to rotate by

다시 말하면, 회전소성로(100)는 그 양단이 지지베어링(40-1,40-2)에 의해 하향 경사지면서 회전이 가능하도록 지지되어 있고, 그 중단부가 회전구동수단(50-1,50-2)에 의해 회전 구동되도록 구성되어 있다.In other words, the rotary calcination furnace 100 is supported so that both ends thereof are rotatably inclined downward by the support bearings 40-1 and 40-2, and the middle portions thereof are rotation driving means 50-1 and 50-2. ) is configured to be rotationally driven by

이때, 회전구동수단(50-1,50-2)은 기어의 치결합 또는 풀리와 벨트 등 다양한 공지된 동력전달방식중 어느 하나로 구성될 수 있다.At this time, the rotation driving means (50-1, 50-2) may be configured in any one of various known power transmission methods such as tooth engagement of gears or pulleys and belts.

그리고, 본 발명에 따른 활성탄의 제조장치는 회전소성로(100)의 입구측 다시말하면, 지지베어링(40-1)의 외측면에 내화로(20)가 고정 설치되어 있고, 내화로는 그 내벽이 내화벽돌로 축조되어 있고 그 외측면에 버너(10)가 설치되면서 버너의 연소열에 의해 내화벽돌의 축열이 이루어지면 그 내부에 1000℃이상의 열원이 형성된다.And, in the apparatus for producing activated carbon according to the present invention, the refractory furnace 20 is fixedly installed on the inlet side of the rotary kiln 100, that is, on the outer surface of the support bearing 40-1, and the inner wall of the refractory furnace is It is built with fire bricks, and when the burner 10 is installed on the outer surface of the fire bricks and the heat storage of the fire bricks is made by the combustion heat of the burner, a heat source of 1000° C. or higher is formed therein.

여기서, 고정된 내화로(20)의 상부에 원료공급수단(30)이 구비되어 있고, 이 원료공급수단(30)은 도2에 도시된 바와 같이 투입된 원료를 회전소성로(100)의 입구측에 자유낙하시켜 공급하도록 구성되어 있다.Here, the raw material supply means 30 is provided on the upper portion of the fixed refractory furnace 20 , and the raw material supply means 30 feeds the inputted raw material to the inlet side of the rotary kiln 100 as shown in FIG. 2 . It is configured to be supplied by free fall.

또한, 본 발명에 따른 활성탄의 제조장치는 회전소성로(100)의 출구측 다시 말하면, 지지베어링(40-2)의 외측편에 활성탄수거로(80)가 고정 설치되어 있고, 활성탄수거로(80)에는 그 상부에 석션수단(60)이 구비되면서 그 하부에 활성탄수거호퍼(70)가 구비되어 있다.In addition, in the apparatus for producing activated carbon according to the present invention, the activated carbon collection path 80 is fixedly installed on the exit side of the rotary kiln 100, that is, on the outer side of the support bearing 40-2, and the activated carbon collection path 80 ) is provided with a suction means 60 on its upper part, and an activated carbon collecting hopper 70 is provided on its lower part.

이때, 석션수단(60)은 백필터(61)와 송풍기(62)로 구성되어 송풍기(62)에 의해 활성탄수거로(80)에 부압을 형성하게 되고, 자연히 회전소성로(100)내의 공기를 활성탄수거로(80)측으로 흡입하는 동시에 내화로(20)의 열풍을 회전소성로(100)로 흡입하도록 작용하게 된다.At this time, the suction means 60 is composed of a bag filter 61 and a blower 62, and a negative pressure is formed in the activated carbon collection path 80 by the blower 62, and the air in the rotary kiln 100 is naturally sucked into the activated carbon. It acts to suck the hot air from the refractory furnace 20 into the rotary kiln 100 while simultaneously sucking it toward the collection furnace 80 .

결국, 본 발명에 따른 활성탄의 제조장치는 석션수단(60)의 흡입력에 의해 내화로(20)의 열풍이 회전소성로(100)의 내부로 흡입되고, 회전소성로(100)의 입구측온도는 내화로(20)의 열원과 근접하여 약 1000℃를 유지하지만 내화로(20)의 열원으로부터 가장 먼 회전소성로(100)의 출구측온도는 약 200℃를 유지하도록 구성되어 있다.As a result, in the apparatus for producing activated carbon according to the present invention, the hot air of the refractory furnace 20 is sucked into the inside of the rotary kiln 100 by the suction force of the suction means 60 , and the inlet temperature of the rotary kiln 100 is refractory Close to the heat source of the furnace 20 and maintain about 1000 ℃, but the temperature of the outlet side of the rotary kiln 100 furthest from the heat source of the refractory furnace 20 is configured to maintain about 200 ℃.

한편, 본 발명에 따른 활성탄의 제조장치는 도3에 도시된 바와 같이 16개의 소성버켓(110)이 회전소성로(100)의 내주면에 원주방향으로 서로 일정 간격을 이루면서 축방향을 따라 길게 부착되어 있다.On the other hand, in the apparatus for manufacturing activated carbon according to the present invention, as shown in FIG. 3 , 16 firing buckets 110 are attached to the inner peripheral surface of the rotary kiln 100 at regular intervals in the circumferential direction and long along the axial direction. .

다시 말하면, 소성버켓(110)은 도4에 도시된 바와 같이 그 길이가 회전소성로(100)의 축길이로 구비되어 회전소성로(100)의 내주면에 축길이방향으로 부착되고, 16개가 회전소성로의 내주면을 원주방향으로 16등분하도록 배열된다.In other words, as shown in FIG. 4 , the firing bucket 110 is provided with an axial length of the rotary kiln 100 and is attached to the inner circumferential surface of the rotary kiln 100 in the axial longitudinal direction, 16 of which are of the rotary kiln 100 . It is arranged so that the inner circumferential surface is divided into 16 equal parts in the circumferential direction.

이때, 소성버켓(110)은 도4에 도시된 바와 같이 그 하단부가 약 40°정도로 절곡되어 원료를 담을 수 있는 공간을 확보하도록 구성되어 있고, 도3에 도시된 바와 같이 시계방향으로 회전하는 회전소성로(100)를 따라 승강되는데, 시계로 비유해서 6시부터 9시 구간까지 원료를 담아 상승하다가 9시의 위치를 지나면서 서서히 원료를 자유낙하시키기 시작해서 12시를 지나면서 담고 있던 원료를 모두 자유낙하시키도록 구성되어 있다.At this time, the firing bucket 110 is configured to secure a space to contain the raw material by bending its lower end by about 40° as shown in FIG. 4 , and rotates clockwise as shown in FIG. 3 . It goes up and down along the kiln 100, like a clock, it rises with raw materials from 6 o'clock to 9 o'clock, and after passing the 9 o'clock position, the raw materials begin to fall freely, and after 12 o'clock, all the raw materials contained are removed. It is designed for free fall.

여기서, 회전소성로(100)에서는 소성버켓(110)을 이용하여 원료를 자유낙하시키게 되고, 자유낙하되는 원료는 내화로(20)의 열풍에 반복적으로 노출되면서 소성이 순차적으로 이루어지게 된다.Here, in the rotary kiln 100 , the raw material is allowed to freely fall by using the calcination bucket 110 , and the free-falling raw material is repeatedly exposed to the hot air of the refractory furnace 20 , and firing is performed sequentially.

또한, 회전소성로(100)에서는 그 경사를 이용하여 원료를 입구측에서 출구측으로 서서히 자연 이동시키면서 소성을 진행하도록 구성되어 있다.In addition, the rotary kiln 100 is configured to proceed with sintering while gradually moving the raw material from the inlet side to the outlet side using the inclination thereof.

그리고, 본 발명에 따른 활성탄의 제조방법에서는 우선 원료를 회전소성로(100)에서 소성하기 전에 가수공정을 거치면서 79~88%의 함수율(활성탄의 전체 무게중 수분량의 무게를 백분율로 표시한 것)을 갖도록 가수하게 되는데, 이때 원료는 가수에 의해 입자가 연화되면서 점성을 가지게 되고, 점성에 의해 서로 엉기면서 다양한 크기의 덩어리를 이루게 된다.And, in the method for producing activated carbon according to the present invention, a water content of 79 to 88% (the weight of the moisture content in the total weight of the activated carbon expressed as a percentage) while the raw material is first subjected to a hydrolysis process before firing in the rotary kiln 100 In this case, the raw material becomes viscous as the particles are softened by the hydration, and agglomerate to form lumps of various sizes by viscosity.

특히, 본 발명에 따른 활성탄의 제조방법에서 가수공정의 원료가 79% 미만의 함수율을 갖도록 제조되는 경우, 회전소성로(100)의 입구측에서 소성하는 초기 과정에서 원료가 내화로(20)에서 분출되는 1000℃의 열풍과 접촉되면 그대로 타버릴 가능성이 높아 활성탄수거로(80)에서 수거되는 활성탄의 수득율이 현저히 감소되는 문제가 있다. In particular, when the raw material for the hydrolysis process is manufactured to have a moisture content of less than 79% in the method for producing activated carbon according to the present invention, the raw material is ejected from the refractory furnace 20 in the initial process of calcining at the inlet side of the rotary kiln 100 There is a problem in that the yield of the activated carbon collected in the activated carbon collection furnace 80 is significantly reduced because it is highly likely to burn as it is when in contact with the hot air of 1000° C.

또한, 본 발명에 따른 활성탄의 제조방법에서 가수공정의 원료가 88%를 초과한 함수율로 제조되는 경우, 원료가 회전소성로(100)에서의 소성공정에도 불구하고 입자의 연화상태가 유지되면서 점성에 의한 덩어리를 형성할 수 있고, 입자의 미세한 공극이 미발달되거나 입자의 과대한 공극이 발달될 가능성이 높다.In addition, in the case in which the raw material for the hydrolysis process in the method for producing activated carbon according to the present invention is manufactured with a moisture content exceeding 88%, the raw material maintains the softened state of the particles despite the calcination process in the rotary kiln 100 while maintaining the viscosity. There is a high possibility that the particles may form a lump by the

여기서, 본 발명에 따른 활성탄의 제조방법에서는 함수율 79~88%의 원료를 원료공급수단(30)을 통해 회전소성로(100)의 입구측에 낙하시키게 되는데, 회전소성로(100)에서는 원료공급수단(30)을 통해 그 입구측에 자유낙하된 함수율 79~88%의 원료를 소성하도록 구성되어 있다.Here, in the method for producing activated carbon according to the present invention, a raw material having a moisture content of 79 to 88% is dropped to the inlet side of the rotary kiln 100 through the raw material supply means 30, and in the rotary kiln 100, the raw material supply means ( 30), it is configured to sinter the raw material with a moisture content of 79 to 88% that has fallen freely on the inlet side.

이때, 석션수단(60)의 송풍기(62)가 구동되면서 활성탄수거로(80)에 부압이 형성되면 회전소성로(100)의 공기가 활성탄수거로(80)로 흡입되는 동시에 내화로(20)의 열풍이 회전소성로의 중심축을 따라 흐르도록 흡입이 이루어지게 된다.At this time, when a negative pressure is formed in the activated carbon collection path 80 while the blower 62 of the suction means 60 is driven, the air from the rotary kiln 100 is sucked into the activated carbon collection path 80 at the same time as the refractory furnace 20 Suction is made so that the hot air flows along the central axis of the rotary kiln.

그리고, 회전소성로(100)는 회전구동수단(50-1,50-2)에 의해 회전되면서 소성버켓(110)이 원료를 담아서 자유낙하시키게 되고, 소성버켓으로부터 자유낙하되는 원료는 석션수단(60)의 흡입력에 의해 회전소성로의 중심축을 따라 흐르는 열풍과 접촉이 이루어지면서 소성이 이루어지게 된다.In addition, the rotary calcination furnace 100 is rotated by the rotary driving means 50-1 and 50-2, and the firing bucket 110 contains the raw material and falls freely. ) by the suction force, the hot air flowing along the central axis of the rotary kiln is in contact with the firing force.

여기서, 회전소성로(100)내의 원료는 소성버켓(110)에 담겨서 반복적으로 자유낙하되면서 순차적으로 소성이 이루어지고, 동시에 회전소성로의 경사에 의해 자연스럽게 활성탄수거로(80)측으로 이동이 이루어지게 된다.Here, the raw materials in the rotary calcination furnace 100 are contained in the calcination bucket 110 and are repeatedly fired while freely falling, and at the same time, they are naturally moved to the activated carbon collection furnace 80 side by the inclination of the rotary calcination furnace.

더욱이, 본 발명에 따른 활성탄의 제조방법에서 회전소성로(100)는 그 입구측이 내화로(20)의 출구측에 위치하여 대략 1000℃의 열풍이 지나가게 되고, 그 출구측의 경우 내화로의 열풍이 원료와의 반복적인 접촉과정에서 열손실로 인해 대략 200℃의 열풍이 형성된다.Moreover, in the method for producing activated carbon according to the present invention, the inlet side of the rotary kiln 100 is located on the outlet side of the refractory furnace 20 so that hot air of about 1000° C. A hot air of approximately 200°C is formed due to heat loss in the process of repeated contact of the hot air with the raw material.

특히, 회전소성로(100)내에서 원료의 반복적인 소성과정에서 다량의 수증기가 발생되는데, 이 수증기는 원료의 소성과정에서 활성화되는 미세한 공극형성을 방해하도록 작용하게 되고, 석션수단(60)은 내화로(20)의 열풍에 의한 원료의 반복적인 소성과정에서 발생되는 회전소성로(100)내의 수증기를 신속하게 배출함으로써 수증기에 의한 원료의 불완전한 소성을 방지하도록 작용하게 된다.In particular, a large amount of water vapor is generated in the process of repeatedly firing raw materials in the rotary kiln 100, and this water vapor acts to prevent the formation of fine pores that are activated during the sintering process of the raw material, and the suction means 60 is refractory. By rapidly discharging the water vapor in the rotary kiln 100 generated during the repeated firing process of the raw material by the hot air of the furnace 20, it acts to prevent incomplete firing of the raw material by the steam.

한편, 본 발명에 따른 활성탄의 제조방법에 의해 회전소성로(100)에서 소성되어 활성탄수거로(80)의 활성탄수거호퍼(70)에서 수거되는 활성탄을 살펴보면, 도5에 도시된 바와 같이 그 입자의 세공직경(pore diameter)이 약 400Å이하의 미세한 공극이 현저하게 발달되어 있음을 확인할 수 있다. On the other hand, looking at the activated carbon that is fired in the rotary kiln 100 by the method for producing activated carbon according to the present invention and collected in the activated carbon collection hopper 70 of the activated carbon collection furnace 80, as shown in FIG. It can be seen that fine pores with a pore diameter of about 400 Å or less are remarkably developed.

이처럼 본 발명에 의해 제조되는 활성탄은 약 400Å이하의 미세한 공극이 활성화되면서 물의 흡착능이 월등히 향상되는 동시에 흡착된 물이 전혀 탈착되지 않는 특징이 있고, 기존의 활성탄에 비해 현저히 많은 양의 수분을 흡착할 수 있도록 제조된다.As such, the activated carbon produced by the present invention has a feature that, as minute pores of about 400 Å or less are activated, the water adsorption capacity is significantly improved, and the adsorbed water is not desorbed at all, and it can adsorb a significantly larger amount of moisture compared to the existing activated carbon. manufactured to be able to

따라서, 본 발명에 따른 활성탄의 제조방법은 37~64%의 함수율을 갖는 활성탄을 제조하게 되는데, 원료는 79~88%의 함수율에서 입자가 연화되면서 점성에 의해 덩어리를 이루고 있는 상태에서 회전소성로(100)에 투입되면 내화로(20)의 열풍에 의해 소성되는 과정에서 연화된 입자조직이 쉽게 공극으로 변환되면서 물을 흡착한 상태의 미세한 공극으로 발달하게 된다.Accordingly, the method for producing activated carbon according to the present invention produces activated carbon having a moisture content of 37 to 64%, and the raw material is a rotary kiln ( 100), the softened grain structure in the process of being fired by the hot air of the refractory furnace 20 is easily converted into pores and develops into fine pores in a state where water is adsorbed.

결국, 함수율 79~88%의 원료는 회전소성로(100)내의 소성공정을 거치면서 함수율 37~64%의 활성탄으로 제조하게 되는데, 활성탄의 함수율이 36%이하인 경우, 여전히 입자가 비산되면서 주위의 대기와 환경을 오염시키게 되고 폐수의 수면에 부유되면서 쉽게 가라앉지 않아 흡착기능을 제대로 수행하지 못하는 문제가 발생된다.As a result, the raw material having a moisture content of 79 to 88% is produced as activated carbon having a moisture content of 37 to 64% while going through the firing process in the rotary kiln 100. If the moisture content of the activated carbon is 36% or less, the particles are still scattered and As it floats on the surface of the wastewater, it does not sink easily and thus does not perform the adsorption function properly.

더욱이, 활성탄이 65%이상의 함수율을 갖는 경우, 원하는 활성탄의 자중이 확보되어 비산 또는 폐수면의 부유 등의 문제는 없으나, 보관중 다양한 크기의 덩어리를 형성하면서 자중이 지나치게 커지게 되고, 결국 살포 후 상당시간 폐수내에 체류해야 하지만 과대한 자중에 의해 폐수내의 침강속도가 빨라지면서 폐수내의 오염물질을 제대로 흡착할 수 없는 등의 문제가 있다.Moreover, when the activated carbon has a moisture content of 65% or more, the desired dead weight of the activated carbon is secured and there is no problem such as scattering or floating of the waste water surface, but its own weight becomes excessively large while forming lumps of various sizes during storage, and eventually after spraying Although it has to stay in the wastewater for a considerable amount of time, there is a problem such as being unable to properly adsorb pollutants in the wastewater as the sedimentation rate in the wastewater is increased due to its excessive weight.

그리고, 활성탄수거로(80)에서는 회전소성로(100)의 출구측으로부터 배출되는 활성탄과, 석션수단(60)의 백필터(61)에서 필터링된 활성탄을 수집하여 활성탄수거호퍼(70)를 통해 배출하도록 작용하게 된다.And, in the activated carbon collection furnace 80, the activated carbon discharged from the outlet side of the rotary kiln 100 and the activated carbon filtered by the bag filter 61 of the suction means 60 are collected and discharged through the activated carbon collection hopper 70. will work to

요컨대, 본 발명은 79~88%의 함수율을 갖도록 가수되면서 연화된 상태의 원료를 회전소성로(100)에서 소성함으로써 함수율 37~64%의 활성탄으로 제조하도록 구성됨으로써, 활성탄의 충분한 함수율에 의해 원하는 입자의 자중을 확보할 수 있고, 이로부터 활성탄의 비산 및 폐수면부유 등과 같은 문제를 완벽하게 해소할 수 있는 작용효과를 제공하는 데에 그 기술적 특징이 있다 할 것이다.In short, the present invention is configured to produce activated carbon having a moisture content of 37 to 64% by calcining a raw material in a softened state while being hydrolyzed to have a moisture content of 79 to 88% in the rotary kiln 100, whereby the desired particles by sufficient moisture content of the activated carbon It can be said that it has its technical characteristics in that it can secure its own weight and provides an effect that can completely solve problems such as scattering of activated carbon and floating of waste water from this.

이와 같이, 본 발명의 상세한 설명에서는 구체적인 실시예에 관해 설명하였으나, 이는 본 발명의 범주에서 벗어나지 않는 한도내에서 여러가지 변형이 가능함은 물론이다.As such, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention.

그러므로, 본 발명의 실질적인 범위는 상술된 실시예에 의해 한정되어져서는 안되며, 후술하는 청구범위 뿐만 아니라 청구범위와 균등한 구성에 의해 정해져야 함은 당연하다.Therefore, it is natural that the practical scope of the present invention should not be limited by the above-described embodiments, and should be defined by not only the claims to be described later, but also by the constitutions equivalent to the claims.

10: 버너 20: 내화로 30: 원료공급수단 40-1,40-2: 지지베어링 50-1,50-2:회전구동수단 60: 석션수단 70: 활성탄수거호퍼 80: 활성탄수거로 100: 회전소성로10: burner 20: refractory furnace 30: raw material supply means 40-1, 40-2: support bearing 50-1, 50-2: rotary drive means 60: suction means 70: activated carbon collection hopper 80: activated carbon collection furnace 100: rotation kiln

Claims (2)

삭제delete 원료가 원료공급수단(30)을 통해 회전소성로(100)에 투입되면 소성버켓(110)에 의해 자유낙하되면서 내화로(20)의 열풍에 의해 순차적으로 소성되어 활성탄으로 제조되는 통상적인 활성탄의 제조방법에 있어서,
상기 원료는 79~88%의 함수율을 갖도록 가수하여 상기 회전소성로(100)에 투입되고, 상기 활성탄은 37~64%의 함수율을 갖도록 제조되는 것을 특징으로 하는 활성탄의 제조방법.When raw materials are put into the rotary kiln 100 through the raw material supply means 30, they are sequentially sintered by the hot air of the refractory furnace 20 while freely falling by the sintering bucket 110 to produce conventional activated carbon made of activated carbon. In the method,
The raw material is hydrolyzed so as to have a moisture content of 79 to 88% and put into the rotary kiln 100, and the activated carbon is manufactured to have a moisture content of 37 to 64%.
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* Cited by examiner, † Cited by third party
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JPH0664912A (en) * 1992-08-17 1994-03-08 Tokyo Yogyo Co Ltd Production of active carbon
KR100364984B1 (en) 1999-12-27 2002-12-26 (주)무림화학 Manufacturing method and apparatus for powdered active carbon
JP2005145804A (en) * 2003-11-20 2005-06-09 Anzen Shokuhin Kk Manufacturing method of active carbon from cigarette butt as main raw material and active carbon manufactured therewith
JP2007308311A (en) * 2006-05-16 2007-11-29 Kazuo Akiyama Manufacturing method of activated carbon and activated carbon
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