KR20010038613A - The drying system and method for fuelizing of wet sludge - Google Patents

The drying system and method for fuelizing of wet sludge Download PDF

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Publication number
KR20010038613A
KR20010038613A KR1019990046658A KR19990046658A KR20010038613A KR 20010038613 A KR20010038613 A KR 20010038613A KR 1019990046658 A KR1019990046658 A KR 1019990046658A KR 19990046658 A KR19990046658 A KR 19990046658A KR 20010038613 A KR20010038613 A KR 20010038613A
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oil
sludge
tank
vacuum
drying
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KR1019990046658A
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Korean (ko)
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KR100349218B1 (en
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박경만
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박경만
건민산업 주식회사
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00Solid fuels
    • C10L5/40Solid fuels essentially based on materials of non-mineral origin
    • C10L5/46Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel
    • 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
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/20Sludge processing

Abstract

PURPOSE: A method for drying sludge for use as fuel and a system thereof are provided to treat the waste and sludge without subsidiary fuel during the incineration by drying waste and sludge in an indirect heating and drying method so as to obtain a desirable moisture content and adhering oil fraction to the target object to be burned, thereby increasing the heating value of the target object so as to make it a fuel. CONSTITUTION: The method comprises the processes of injecting a sludge so that a mixing ratio of the sludge to the oil is in the range of 1:0.5 to 1.5 after agitating and heating by transferring oil of an oil service tank (5), and then preheating to a heating temperature of 60 to 110 deg.C; transferring the preheated mixture to an evaporation dryer (6) in which the mixed sludge and oil are agitated and indirectly heated to a temperature of the contents of 60 to 110 deg.C as maintaining a degree of vacuum of 50 to 700 Torr with a vacuum pump and a condenser (10) so that the mixture of the sludge and oil is dried to a moisture content of 1 to 10% and an oil content of 5 to 20% of the sludge; transferring the material to a cushion tank (8) by vacuum; increasing a temperature of the resulting material to 90 to 130 deg.C at a post-heater before transferring to a centrifugal machine (9) for deoiling, wherein the discharged oil is transferred to an oil service tank (5) by vacuum for recycling; and continuously drying the sludge so that the sludge can be fueled with oil adhered to it as maintaining a certain oil content.

Description

슬러지 건조 연료화 처리 방법 및 시스템{THE DRYING SYSTEM AND METHOD FOR FUELIZING OF WET SLUDGE}Sludge Dry Fueling Process and System {THE DRYING SYSTEM AND METHOD FOR FUELIZING OF WET SLUDGE}

본 발명은 가정, 식품 제조업체, 하수 처리장, 산업 현장 등에서 발생되는 폐기물 및 슬러지를 간접 가열 건조 방식으로 건조하여 원하는 함수율을 갖게 하고, 소각 대상물에 유분을 점착시킴으로써, 소각 대상물의 발열량을 증가시켜서 연료화하여 소각시 보조 연료 없이 연소되도록 발명된 슬러지 건조 연료화 처리 방법에 관한 것이다.The present invention is to dry the waste and sludge generated at home, food manufacturers, sewage treatment plants, industrial sites, etc. by indirect heat drying method to have a desired moisture content, and by adhering oil to the incineration object, by increasing the calorific value of the incineration object to fuelize It relates to a sludge dry fueling treatment method invented to burn without auxiliary fuel upon incineration.

기존에 발생된 슬러지의 양은 1996년도만 하더라도 전국 하수 처리장에서 약 130만 톤으로 집계되고 있으며, 그 중 100만 톤 이상이 매립에 의한 방식으로 처리되었다. 따라서 대략적인 매립의 비율은 77%에 해당되고 있으며, 1997년 이후 신설 및 증설된 하수 처리장이 많이 있으나, 1996년도의 처리비율을 볼 때 당시 하수 발생량은 2,327만톤/일이고, 하수 처리량은 1,145만톤/일을 처리하게 되므로 나머지는 하천 방류로 인하여 수질오염과 해양오염의 근원이 되었으며, 처리장에서 처리된 슬러지의 처리 방법을 살펴보면, 매립 77.67%, 해양투기 18.72%, 농업이용 2.33%, 소각 0.41%, 기타 0.86%(1998년 환경통계연감 참조) 순으로 이루어지고 있는 바, 매립에 의한 슬러지 처리 방법에 의존하고 있는 실정임을 알 수 있습니다. 따라서 미래에는 폐기물 슬러지 또는 하수 슬러지의 발생량이 기하급수적으로 많아질 것은 자명한 것이며, 특히 2001년부터는 유기성 폐기물의 직매립이 법으로 금지됨으로써 하수 슬러지 또는 폐기물 슬러지를 연소 소각시킨 후 그 소각 재를 매립해야 하므로 수분이 다량 함유된 슬러지를 소각하기 위한 건조 방법이 시급히 연구되어야 하는 과제를 갖게 된 것이다.The amount of sludge generated in the past was estimated to be about 1.3 million tons in sewage treatment plants nationwide in 1996 alone, and more than 1 million tons were treated by landfill. Therefore, the approximate landfill rate is 77%, and many sewage treatment plants have been newly constructed and expanded since 1997.However, in 1996, the sewage generation rate was 2327 million tons / day, and the sewage treatment capacity was 14.5 million tons. As the day is processed, the remainder is the source of water pollution and marine pollution due to the discharge of the river, and the treatment method of the sludge treated in the treatment plant is 77.67% landfill, 18.72% ocean dumping, 2.33% agricultural use, 0.41% incineration. And other 0.86% (see 1998 Environmental Statistics Yearbook), indicating that it is dependent on the method of treating sludge by landfill. Therefore, it is obvious that the amount of waste sludge or sewage sludge will increase exponentially in the future. Especially, since 2001, direct landfilling of organic waste is prohibited by law, and the incineration ash is reclaimed after burning incineration of sewage sludge or waste sludge. As a result, a drying method for incineration of water-rich sludge has been urgently studied.

본 발명은 이와 같은 문제점을 감안하여 발명한 것으로서, 슬러지와 오일을 예열 혼합조에 넣어 가열 혼합 교반 후 증발 건조기에 이송하여 대기압 이하의 저 진공 하에서 가열 교반하여 수분을 증발 배출시켜, 응축수는 유수 분리기에서 유분과 수분으로 분리되고 증발 건조기의 슬러지는 원심 분리기에서 슬러지와 오일로 분리되어 수분 1%∼10%, 유분 5%∼20%가 함유된 슬러지를 형성시켜 소각시 별도의 보조 연료가 필요 없도록 한 것으로서, 본 발명은 건조 성능의 향상을 위해 간접 가열 건조 방식을 채택하여 열매체인 오일과 슬러지를 혼합 가열하고 정해진 함수율에 도달하면 자동으로 건조를 멈추고 슬러지와 오일을 원심 분리기로 분리 배출한다. 이 때 건조 과정에 대기압 이하의 진공 상태를 유지시켜, 수분의 비점을 낮추고 열매체인 오일의 온도가 80℃로 저온을 갖게 되어 저온건조의 목적을 달성하고, 열매체인 오일의 열화가 방지되어 슬러지로부터 회수하는 오일을 반복적으로 사용할 수 있도록 한 슬러지 건조 방식에 관한 것이다.The present invention has been invented in view of such a problem, and the sludge and oil are put in a preheating mixing tank, and then heated and stirred and transferred to an evaporation dryer, followed by heating and stirring under low vacuum below atmospheric pressure to evaporate and discharge the water, and the condensate is separated from the oil / water separator. The oil and water are separated and the sludge of the evaporator is separated into sludge and oil in a centrifuge to form sludge containing 1% to 10% moisture and 5% to 20% oil so that no additional auxiliary fuel is required for incineration. As the present invention, the present invention adopts an indirect heating drying method to improve the drying performance, and when the heat medium oil and sludge are mixed and heated, the drying is stopped automatically and the sludge and oil are separated and discharged by a centrifuge. At this time, by maintaining the vacuum below atmospheric pressure in the drying process, the water boiling point is lowered and the temperature of the heat medium oil has a low temperature of 80 ° C. to achieve the purpose of low temperature drying, and the deterioration of the heat medium oil is prevented from sludge. The present invention relates to a sludge drying method in which oil to be recovered can be repeatedly used.

도1은 술러지를 처리하기 위한 건조 시스템 블럭도.1 is a block diagram of a drying system for processing a sulphate.

도2는 슬러지의 전처리 건조와 소각 재활용 시스템 블럭도.Figure 2 is a block diagram of pretreatment drying and incineration recycling system of sludge.

도3은 본 발명의 슬러지 처리 시스템의 실시 구성도.3 is an embodiment configuration diagram of a sludge treatment system of the present invention.

<도면 중 주요 부분에 대한 부호 설명><Description of Symbols for Main Parts in Drawings>

1:예열 혼합조, 2a:슬러지 투입구, 2b:오일 슬러지 혼합물 출구,1: preheating mixing tank, 2a: sludge inlet, 2b: oil sludge mixture outlet,

3:오일 투입구, 4:오일 저장탱크, 5:오일 공급탱크,3: oil inlet, 4: oil storage tank, 5: oil supply tank,

5':오일 배출구, 6:증발 건조기, 6a:혼합물 유입구,5 ': oil outlet, 6: evaporative dryer, 6a: mixture inlet,

6b:슬러지 배출구, 7:유수 분리기, 8:쿠션 탱크,6b: sludge outlet, 7: oil-water separator, 8: cushion tank,

9:원심 분리기, 10:증기 응축기, 11:응축수조,9: centrifuge, 10: steam condenser, 11: condensing tank,

12:오일 리시버 탱크12: oil receiver tank

이하 첨부 도면에 의거하여 본 발명의 실시예를 상세히 설명하면 다음과 같다. 하수 및 폐수 처리장과 산업 현장 등에서 발생되는 슬러지 및 폐기물 등을 연료화 처리할 수 있도록 된 슬러지 건조 방법에 있어서,Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the sludge drying method, which is capable of fuelizing sludge and waste generated in sewage and wastewater treatment plants and industrial sites,

광물류 및 폐광물류를 사용하여 오일 공급탱크(5)의 오일을 예열 혼합조(1)에 이송하여 교반 가열한 후 슬러지와 오일의 혼합비가 1:0.5∼1.5 범위가 되도록 슬러지를 투입하여 가열 온도 60∼110℃로 예열한 다음 진공에 의하여 증발 건조기(6)로 이송되도록 하고, 증발 건조기(6) 내에는 진공 펌프 및 증기 응축기(10)로 50∼700Torr의 진공도를 유지하면서 혼합된 슬러지와 오일의 내용물 온도를 60∼110℃로 교반 간접 가열하여 수분을 증발 응축 배출시켜 슬러지 함수율 1∼10%, 함유율 5∼20%로 건조한 다음 진공에 의해 쿠션탱크(8)로 이송하고, 후 열기에서 90∼130℃까지 온도를 상승시켜 원심 분리기(9)로 이송 탈유하며, 이 때 배출되는 오일은 진공에 의하여 오일 공급탱크 (5)로 이송시켜 재활용하도록 하고 슬러지를 연속적으로 건조시킴으로써 일정한 함수율을 가지면서 오일이 점착되어 연료화시킬 수 있도록 된 슬러지의 제조 방법과;Using oil and waste minerals, the oil in the oil supply tank 5 is transferred to the preheating mixing tank 1 and stirred and heated, and then the sludge is introduced so that the mixing ratio of sludge and oil is in the range of 1: 0.5 to 1.5. After preheating to ˜110 ° C., it is transported to the evaporation dryer 6 by vacuum, and inside the evaporation dryer 6, a vacuum pump and a steam condenser 10 are used to maintain the vacuum degree of 50 to 700 Torr. The content temperature was stirred at 60-110 ° C. indirectly by heating to evaporate and condense the moisture to dry the sludge with a water content of 1-10% and a content of 5-20%, transfer it to the cushion tank 8 by vacuum, and then 90 ~ The temperature is increased to 130 ° C, and the oil is transferred to the centrifuge 9 for deoiling. The oil discharged at this time is transferred to the oil supply tank 5 by vacuum for recycling, and the sludge is continuously dried to maintain a constant moisture content. Method of manufacturing a kind of sludge so that the oil is adhesive and can yeonryohwa while;

상기 슬러지 소각을 위한 전처리 건조 방법을 실시하기 위해 상부 일측에는 슬러지 투입구(2a)를 형성하고 타측에는 오일 저장탱크(4)와 연결된 오일 공급탱크(5)의 오일 배출구(5')와 연결되도록 슬러지 배출구(2b)가 형성된 예열 혼합조(1)와;In order to implement the pre-treatment drying method for the sludge incineration, the sludge inlet (2a) is formed on the upper side and the sludge is connected to the oil outlet (5 ') of the oil supply tank (5) connected to the oil storage tank (4) on the other side A preheating mixing tank 1 in which an outlet 2b is formed;

상기 예열 혼합조(1)로부터 공급된 광물유를 포함한 슬러지가 증발 건조기(6)에서 교반되는 동시에 스팀에 의하여 증발이 이루어져 응축수는 유수 분리기(7)에서 오일과 분리되어 오일은 오일 공급탱크(5)로 환원되고, 물은 처리장으로 배출되도록 한 구성과;The sludge containing the mineral oil supplied from the preheating mixing tank 1 is stirred in the evaporation dryer 6 and evaporated by steam so that the condensate is separated from the oil in the oil / water separator 7 so that the oil is supplied to the oil supply tank 5. Reduced to, and the water is discharged to the treatment plant;

상기 증발 건조기(6)에서 건조된 슬러지는 배출구(6b)로 배출되어 쿠션탱크(8)를 거쳐 원심 분리기(9)에서 슬러지에 함유된 오일을 분리시켜 오일 공급탱크(5)로 환수되고, 오일 리시버탱크(12)에는 유수 분리기(7)와 원심 분리기(9)에서 분리된 오일이 모아지도록 된 구성이다.The sludge dried in the evaporation dryer (6) is discharged to the discharge port (6b), and the oil contained in the sludge in the centrifugal separator (9) through the cushion tank (8) is returned to the oil supply tank (5), the oil The receiver tank 12 is configured to collect oil separated from the oil / water separator 7 and the centrifugal separator 9.

상기와 같이 실시되는 본 발명은 광물유나 폐엔진오일, 폐기계오일 등의 각종 폐광물유와 하수 종말처리 슬러지, 각 산업 현장의 폐수처리 슬러지 및 함수 폐기물, 버린 음식물 등을 수거하여 예열 혼합조(1)에 광물유 1대, 슬러지 또는 함수 폐기물, 버린 음식물류 0.8∼1.5의 범위로(1:0.8∼1.5) 투입하여 교반하여 1차 교반 예열한 후 증발 건조기(6)에 이송시켜 슬러지를 교반하며 건조기 내를 50∼700Torr 범위로 진공 상태를 유지하면서 가열온도 60℃∼110℃로 증발건조시키면 수분이 증발하여 증기 응축기(10)에서 응축수로 분리되어 응축수관을 통하여 유수 분리기(7)로 유입되고, 유수 분리기(7)는 응축수를 오일과 수분으로 분리시켜 오일은 다시 오일 공급탱크(5)로 환수되며 수분은 드레인 밸브를 통하여 처리장으로 배출시키게 된다. 이 때 증발 건조기(6)에서 발생되는 휘발성 냄새는 별도의 배출관을 통하여 소각로에서 연소되도록 된 것이다.The present invention carried out as described above is preheated mixing tank (1) by collecting various waste mineral oil, such as mineral oil, waste engine oil, waste-based oil, sewage terminal treatment sludge, wastewater treatment sludge and hydrous waste of each industrial site, discarded food and the like (1) 1) mineral oil, sludge or hydrous waste, discarded foodstuffs (1: 0.8 to 1.5) in a range of 0.8 ~ 1.5, stirred and preheated to the first stirring, and then transferred to the evaporation dryer (6) to agitate the sludge. Is evaporated to dryness at a heating temperature of 60 ° C. to 110 ° C. while maintaining a vacuum in the range of 50 to 700 Torr, and water is evaporated, separated into condensate from the steam condenser 10, and introduced into the oil water separator 7 through the condensate pipe. The separator 7 separates the condensed water into oil and water so that the oil is returned to the oil supply tank 5 and the water is discharged to the treatment plant through the drain valve. At this time, the volatile odor generated in the evaporation dryer 6 is to be burned in the incinerator through a separate discharge pipe.

상기와 같이 증발 건조기(6)에서 증발 건조된 슬러지는 쿠션탱크(8)를 지나 원심 분리기(9)에서 수분과 유분으로 각각 분리되어 오일은 오일 공급탱크(5)로 환수되어 예열 혼합조(1)에 공급할 수 있도록 함으로써 슬러지를 재처리할 수 있도록 한다. 이렇게 원심 분리기(9)를 거친 슬러지는 수분 1%∼10%, 유분 5%∼20%을 갖게 되므로 소각시 별도의 보조 연료가 필요 없이 연소시킬 수 있게 된 것이다.The sludge evaporated and dried in the evaporation dryer (6) as described above is separated into water and oil in the centrifugal separator (9) through the cushion tank (8), and the oil is returned to the oil supply tank (5) to preheat the mixing tank (1). So that the sludge can be reprocessed. The sludge passed through the centrifugal separator 9 will have 1% to 10% moisture and 5% to 20% oil, so that it can be burned without the need for a separate auxiliary fuel.

이상과 같이 이루어지는 본 발명의 슬러지 처리 공정의 시스템을 간단하게 요약하면, 예열 혼합조(1)에 슬러지, 오일, 증기(스팀)투입하여 교반 및 1차 예열증발 건조기(6)에 투입하여 건조기 내를 대기압 이하로 진공 및 교반 가열증발된 수분은 응축기에서 응축유수 분리기에서 오일은 환수하여 재사용, 물은 처리장으로 배출증발 건조기에서 건조된 슬러지는 쿠션탱크(8)로 이송원심 분리기(9)에서 슬러지와 오일을 분리기름은 오일 공급탱크(5)로 환수 슬러지는 수분 1%∼10%, 유분 5%∼20%의 함수율 및 함유율을 갖는 건조 슬러지로 되어 슬러지 소각 전처리 또는 연료화 공정을 완료하게 된다. 이렇게 이루어지는 건조 장치는 하수 슬러지와 산업 폐기물 뿐만 아니라 수산물 및 축산물의 잔재 또는 남은 음식물도 광유물을 동식물유로 대체하여 혼합 건조함으로써 가축 사료로 만들어 사용할 수도 있게 된다.Briefly summarizing the system of the sludge treatment process of the present invention made as described above, by adding sludge, oil, steam (steam) to the preheating mixing tank 1, stirring and primary preheating Put into evaporation dryer (6) and vacuum and stir heating the inside of dryer to below atmospheric pressure Evaporated water condenses in the condenser Oil is returned and reused in the oil / water separator, and water is discharged to the treatment plant The sludge dried in the evaporator is transferred to the cushion tank (8). Separating sludge and oil from the centrifuge (9) The oil is returned to the oil supply tank 5 to dry sludge having a water content and a water content of 1% to 10%, oil content of 5% to 20%, and complete the sludge incineration pretreatment or fueling process. The drying apparatus thus formed may be used as livestock feed by mixing and drying mineral oils with animal and vegetable oils as well as sewage sludge and industrial wastes, as well as residues of fish and livestock.

이렇게 된 본 발명의 슬러지 건조 시스템의 기본적인 적용 원리는 열매체로서 광물유를 이용하는 것으로 열매체가 고체나 기체인 것에 비하여 슬러지의 수분이 존재하는 세공에 흡입이 가능 하며, 피 건조물인 슬러지의 전열면적이 효율적으로 확대되고, 오일에 가해진 열을 슬러지에 함침된 수분에 빠른 열 확산이 일어나고, 열 평형에 도달하면 온도가 상승하게 되는데 이 때 오일의 비점은 물보다 높으므로 물이 먼저 비등하여 수분을 제거하는 건조를 달성한다. 따라서 본 발명은 간접 가열 건조 방식을 채택하여 열매체인 오일의 온도가 저온을 갖게 되어 저온 건조의 목적을 달성하고 열매체인 오일의 열화가 방지되어 슬러지로부터 회수되는 오일을 오일 공급탱크에 환수시켜 반복적으로 사용할 수 있도록 된 건조 방식이다.The basic application principle of the sludge drying system of the present invention is to use mineral oil as the heat medium, and the heat medium can be sucked into the pores in which the water of the sludge exists as compared with the solid or gas, and the heat transfer area of the sludge as the dry matter is efficiently When the heat applied to the oil is expanded, the heat spreads rapidly to the water impregnated in the sludge, and when the temperature is reached, the temperature rises. At this time, the boiling point of the oil is higher than the water, so the water boils first to remove moisture. To achieve. Therefore, the present invention adopts an indirect heating drying method to achieve a low temperature of the heat medium oil to achieve the purpose of low temperature drying and to prevent deterioration of the heat medium oil to return oil recovered from the sludge to the oil supply tank repeatedly It is a drying method that can be used.

이와 같이 된 본 발명은 간단한 시스템으로 이루어져 점검보수가 용이하고, 자동화 운전으로 유지 관리가 간편하며, 운전시 건조기 내부에는 열매유와 접촉 운전되므로 내식성, 내마모성이 크며, 폐기물의 함수율 변화에 따른 대응조절이 간단 용이하여 함수율을 일정하게 유지시켜 소각시 불완전 연소로 인한 다이옥신 등의 대기 오염 물질 배출을 최소화함과 동시에 폐기물을 소각하여 연소된 재만 매립하게 되므로 토양의 오염과 수질오염을 방지하여 환경오염을 방지할 수 있게 됨과 함께 2001년부터 시행되는 슬러지의 직매립 방지에 부흥하고 업체의 폐광물유와 슬러지 처리 비용을 저렴화시킬 수 있게 된 효과를 갖게 되었다.The present invention as described above consists of a simple system for easy maintenance and maintenance, and easy maintenance by automated operation, the operation of contact with the fruit oil inside the dryer during operation is large corrosion resistance, abrasion resistance, corresponding control according to the change in moisture content of the waste It is simple and easy to keep the moisture content constant, minimizing the emission of air pollutants such as dioxins due to incomplete combustion during incineration and at the same time burning only the ashes burned by incineration of wastes, thus preventing environmental pollution by preventing soil pollution and water pollution. In addition to preventing wastes, the company has been able to revive the landfilling of sludge from 2001 and reduce the cost of waste mineral oil and sludge treatment.

Claims (2)

하수 및 폐수 처리장과 산업 현장 등에서 발생되는 슬러지 및 폐기물 등을 연료화 처리할 수 있도록 된 슬러지 건조 방법에 있어서,In the sludge drying method, which is capable of fuelizing sludge and waste generated in sewage and wastewater treatment plants and industrial sites, 광물류 및 폐광물류를 사용하여 오일 공급탱크(5)의 오일을 예열 혼합조(1)에 이송하여 교반 가열한 후 슬러지와 오일의 혼합비가 1:0.5∼1.5 범위가 되도록 슬러지를 투입하여 가열 온도 60∼110℃로 예열한 다음 진공에 의하여 증발 건조기(6)로 이송되도록 하고, 증발 건조기(6) 내에는 진공 펌프 및 증기 응축기(10)로 50∼700Torr의 진공도를 유지하면서 혼합된 슬러지와 오일의 내용물 온도를 60∼110℃로 교반 간접 가열하여 수분을 증발 응축 배출시켜 슬러지 함수율 1∼10%, 함유율 5∼20%로 건조한 다음 진공에 의해 쿠션탱크(8)로 이송하고, 후 열기에서 90∼130℃까지 온도를 상승시켜 원심 분리기((9)로 이송 탈유하며, 이 때 배출되는 오일은 진공에 의하여 오일 공급탱크(5)로 이송시켜 재활용하도록 하고 슬러지를 연속적으로 건조시킴으로써 일정 함수유를 가지면서 오일이 점착되어 연료화시킬 수 있도록 된 슬러지의 제조 방법을 특징으로 하는 슬러지 건조 연료화 처리 방법.Using oil and waste minerals, the oil in the oil supply tank 5 is transferred to the preheating mixing tank 1 and stirred and heated, and then the sludge is introduced so that the mixing ratio of sludge and oil is in the range of 1: 0.5 to 1.5. After preheating to ˜110 ° C., it is transported to the evaporation dryer 6 by vacuum, and inside the evaporation dryer 6, a vacuum pump and a steam condenser 10 are used to maintain the vacuum degree of 50 to 700 Torr. The content temperature was stirred at 60-110 ° C. indirectly by heating to evaporate and condense the moisture to dry the sludge with a water content of 1-10% and a content of 5-20%, transfer it to the cushion tank 8 by vacuum, and then 90 ~ The temperature is increased to 130 ° C and the oil is transferred to a centrifuge (9) for deoiling. At this time, the discharged oil is transferred to the oil supply tank (5) for recycling by vacuum, and the sludge is continuously dried to continuously dry the sludge. As the oil sludge drying yeonryohwa processing method which comprises the preparation of a pressure-sensitive adhesive so as to be yeonryohwa sludge. 슬러지 소각을 위한 전처리 건조 방법을 실시하기 위해 상부 일측에는 슬러지 투입구(2a)를 형성하고 타측에는 오일 저장탱크(4)와 연결된 오일 공급탱크(5)의 오일 배출구(5')와 연결되도록 슬러지 배출구(2b)가 형성된 예열 혼합조(1)와;In order to implement the pre-treatment drying method for sludge incineration, a sludge inlet (2a) is formed on one side of the sludge, and a sludge outlet (5 ') is connected to the oil outlet (5') of the oil supply tank (5) connected to the oil storage tank (4) on the other side. A preheating mixing tank 1 in which 2b is formed; 상기 예열 혼합조(1)로부터 공급된 광물유를 포함한 슬러지가 증발 건조기(6)에서 교반되는 동시에 스팀에 의하여 증발이 이루어져 응축수는 유수 분리기(7)에서 기름과 분리되어 오일은 오일 공급탱크(5)로 환원되고, 물은 처리장으로 배출되도록 한 것과;The sludge containing the mineral oil supplied from the preheating mixing tank 1 is stirred in the evaporation dryer 6 and evaporated by steam so that the condensate is separated from the oil in the oil / water separator 7 so that the oil is supplied to the oil supply tank 5. Reduced to water and discharged to the treatment plant; 상기 증발 건조기(6)에서 건조된 슬러지는 배출구(6b)로 배출되어 쿠션탱크(8)를 거쳐 원심 분리기(9)에서 슬러지에 함유된 기름을 분리시켜 오일 공급탱크(5)로 환수되고, 오일 리시버탱크(12)에는 유수 분리기(7)와 원심 분리기(9)에서 분리된 오일이 모아지도록 된 구성을 특징으로 하는 슬러지 건조 연료화 처리 시스템.The sludge dried in the evaporation dryer (6) is discharged to the discharge port (6b), the oil contained in the sludge in the centrifugal separator (9) through the cushion tank (8) is returned to the oil supply tank (5), oil The sludge dry fueling treatment system, characterized in that the receiver tank (12) is configured to collect oil separated from the oil / water separator (7) and the centrifugal separator (9).
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KR100908409B1 (en) * 2009-02-27 2009-07-20 (주)랜드브릿지 Equipment for manufacturing carbides using sludge
WO2010098590A2 (en) * 2009-02-27 2010-09-02 (주)랜드브릿지 Equipment for producing carbides using sludge
WO2010098590A3 (en) * 2009-02-27 2010-11-25 (주)랜드브릿지 Equipment for producing carbides using sludge
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WO2017126783A1 (en) * 2016-01-19 2017-07-27 주식회사 건민이앤씨 Method for treating sludge

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