KR101573428B1 - Apparatus for recovering volatile organic compounds of fluidized-bed dryer - Google Patents

Apparatus for recovering volatile organic compounds of fluidized-bed dryer Download PDF

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KR101573428B1
KR101573428B1 KR1020120048225A KR20120048225A KR101573428B1 KR 101573428 B1 KR101573428 B1 KR 101573428B1 KR 1020120048225 A KR1020120048225 A KR 1020120048225A KR 20120048225 A KR20120048225 A KR 20120048225A KR 101573428 B1 KR101573428 B1 KR 101573428B1
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exhaust gas
condensing unit
volatile organic
unit
bed coating
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KR20130124808A (en
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안교성
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주식회사 영일이엔에프
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed

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Abstract

본 발명은 적은 시설비와 유지비용으로 휘발성유기화합물의 회수효율을 증대시킬 수 있도록 배기가스의 대기방출에 따른 미미한 환경오염의 개연성까지 제거될 수 있도록 하기 위한 유동층코팅건조기의 휘발성유기화합물 회수장치에 관한 것이다.
본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치는, 유동층코팅건조기의 배기구를 통해 배출되는 배기가스 중에 함유된 휘발성유기화합물을 회수하는 유동층코팅건조기의 휘발성유기화합물 회수장치에 있어서, 상기 유동층코팅건조기의 배기구에 연결되고 상기 배기구를 통해 강제유입되는 배기가스를 1차 응축시켜 응축폐수를 배출시키는 제 1 응축유닛과, 상기 제 1 응축유닛에 연결되는 응축폐수저장탱크와, 상기 제 1 응축유닛에 연결되고 상기 제 1 응축유닛에 의해 1차 응축된 배기가스를 2차 응축시켜 상기 휘발성유기화합물을 배출시키는 제 2 응축유닛과, 상기 제 2 응축유닛에 연결되는 휘발성유기화합물저장탱크와, 상기 제 2 응축유닛에 연결되고 상기 제 2 응축유닛을 관류한 배기가스를 가열하여 상기 유동층코팅건조기로 순환제공하는 배기가스가열유닛을 포함하는 것을 특징으로 한다.The present invention relates to a device for collecting volatile organic compounds in a fluidized bed coating dryer for eliminating the possibility of environmental pollution due to atmospheric release of exhaust gas so as to increase the recovery efficiency of volatile organic compounds at a low facility cost and maintenance cost will be.
The apparatus for recovering volatile organic compounds in a fluidized bed coating drier according to the present invention is a device for recovering volatile organic compounds contained in exhaust gas discharged through an exhaust port of a fluidized bed coating dryer, A first condensing unit connected to an exhaust port of the dryer and configured to primarily condense exhaust gas forced through the exhaust port to discharge condensed wastewater; a condensing wastewater storage tank connected to the first condensing unit; A second condensing unit connected to the second condensing unit to condense the exhaust gas primarily condensed by the first condensing unit to discharge the volatile organic compound; a volatile organic compound storage tank connected to the second condensing unit; The exhaust gas that is connected to the second condensing unit and passed through the second condensing unit is heated to the fluidized bed coating dryer It characterized in that an exhaust gas heating unit to provide ring.

Figure R1020120048225
Figure R1020120048225

Description

유동층코팅건조기의 휘발성유기화합물 회수장치{APPARATUS FOR RECOVERING VOLATILE ORGANIC COMPOUNDS OF FLUIDIZED-BED DRYER}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for recovering volatile organic compounds (VOCs)

본 발명은 유동층코팅건조기의 배기가스 중에 함유된 휘발성유기화합물을 회수하는 유동층코팅건조기의 휘발성유기화합물 회수장치에 관한 것으로, 더욱 상세하게는 유동층코팅건조기의 배기가스를 순차적으로 응축시켜 응축폐수와 휘발성유기화합물을 분리 회수함으로써 적은 시설비와 유지비용으로 휘발성유기화합물의 회수효율을 증대시킬 수 있을 뿐만 아니라 휘발성유기화합물이 회수된 배기가스를 대기중으로 방출시키지 않고 가열 후 유동층코팅건조기 내로 다시 제공함으로써 휘발성유기화합물이 회수된 배기가스의 대기방출에 따른 미미한 환경오염의 개연성까지 제거될 수 있도록 한 유동층코팅건조기의 휘발성유기화합물 회수장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volatile organic compound recovery apparatus for a volatile organic compound recovery apparatus for recovering volatile organic compounds contained in an exhaust gas of a fluidized bed coating drier, It is possible to increase the recovery efficiency of the volatile organic compounds with a small facility cost and maintenance cost by separating and recovering the organic compound, and also the volatile organic compound is returned to the fluidized bed coating dryer after heating without releasing the recovered exhaust gas to the atmosphere, The present invention relates to a volatile organic compound recovery apparatus for a fluidized bed coating drier capable of removing even the possibility of environmental pollution due to atmospheric release of recovered exhaust gas.

일반적으로 유동층건조기는 그 상부에 예를 들어 곡물, 비료, 의약품 등과 같은 입상의 건조대상물이 투입되어 놓여진 다공판의 하부에서 열풍을 상부방향으로 분사하여 입상의 건조대상물을 마치 유체처럼 유동시키면서 건조하는 장치를 말하는 것으로, 이 때 유동층건조기 내에는 입상의 건조대상물과 열풍의 혼합상태가 마치 액체가 비등하고 있는 것처럼 활발히 움직이지만 입상의 건조대상물이 열풍에 동반되어 비산되지는 않는 유동층이 형성된다.Generally, in a fluidized bed dryer, hot air is blown upward from a lower part of a perforated plate in which granular objects such as grain, fertilizer, medicines and the like are put on the upper part of the perforated plate to dry the granular object like a fluid In this case, in the fluidized bed dryer, a mixed state of the granular object to be dried and the hot air actively acts as though the liquid is boiling, but a fluidized bed is formed in which the granular object to be dried is not scattered by hot air.

최근에는 열풍의 제공과 함께 예를 들어 유기용매로서 휘발성유기화합물(PCE; Tetrachloroethylene Ether 등)을 포함하는 코팅액을 동시에 분사하는 유동층코팅건조기도 많이 개발되고 있는데, 도 1에는 유동층코팅건조기의 개략구조도가 도시된다.Recently, a fluidized bed coating dryer for simultaneously spraying a coating liquid containing volatile organic compounds (PCE; Tetrachlorethylene Ether, etc.) as an organic solvent together with provision of hot air has been developed. FIG. 1 shows a schematic structure of a fluidized bed coating dryer Respectively.

유동층코팅건조기(100)는 도 1에 도시되는 바와 같이 일측에 건조대상물이 투입되는 투입구(111)가 형성되고 타측에 건조된 건조대상물이 배출되는 배출구(113)가 형성되며 하단에 건조대상물을 건조하기 위한 열풍이 공급되는 열풍유입구(115)가 형성되고 상단에 배기구(117)가 형성되는 유동층코팅건조기본체(110)와, 유동층코팅건조기본체(110) 내에 설치되어 투입구(111)를 통해 투입된 건조대상물을 지지함과 동시에 휘발성유기화합물을 포함하는 코팅액이 분사되는 분사노즐(121)이 구비되며 분사노즐(121)을 제외한 전면적에 걸쳐 송풍공(도시되지 않음)이 관통형성되는 다공판(120)을 포함하여 이루어진다.As shown in FIG. 1, the fluidized-bed coating and drying apparatus 100 includes a discharge port 111 through which an object to be dried is introduced into one side, an outlet 113 through which the dried object to be dried is discharged, and a drying object A fluidized bed coating dryer main body 110 in which a hot air inlet 115 to which hot air for supplying hot air is formed and an exhaust port 117 is formed at an upper end of the fluidized bed coating dryer main body 110, A perforated plate 120 having an injection nozzle 121 for spraying a coating liquid containing a volatile organic compound while supporting an object and blowing holes (not shown) through the entire surface excluding the injection nozzle 121, .

통상적으로 유동층코팅건조기(100)의 배기구(117)로는 건조대상물의 건조에 사용된 열풍과 함께 코팅액에 함유된 휘발성유기화합물이 열풍에 의해 휘발되어 함께 배출된다.The volatile organic compounds contained in the coating liquid, together with the hot air used for drying the object to be dried, are volatilized by hot air and discharged together with the discharge port 117 of the fluidized bed coating dryer 100.

휘발성유기화합물이 대기중에 그대로 방출될 경우에는 심각한 환경오염이 초래될 뿐만 아니라 휘발성유기화합물에 함유된 발암물질로 인해 건강의 위협을 받을 수 있으므로, 유동층코팅건조기(100)에는 휘발성유기화합물의 방출을 감소하기 위한 설비가 필수적으로 설치되어야 한다.If the volatile organic compounds are released to the atmosphere as they are, the volatile organic compounds may be released to the fluidized bed coating drier 100 because serious environmental pollution is caused, and health cancer may be caused by the carcinogens contained in the volatile organic compounds. The equipment to be reduced must be installed.

휘발성유기화합물의 방출을 감소하기 위한 설비로는 활성탄과 같은 흡착제를 통해 휘발성유기화합물을 흡착하는 흡착식 설비와 촉매를 이용하여 낮은 온도에서 휘발성유기화합물을 산화시켜 제거하는 촉매식 설비를 들 수 있는데, 전자의 경우에는 시설비가 매우 비싸고 넓은 설치공간이 필요하여 실외에만 설치가능할 뿐만 아니라 사용하면 할수록 흡착효율이 떨어지고 흡착제의 정기적 교체로 인한 유지비용이 많이 들며 폐흡착제로 인해 2차적인 환경오염이 발생되는 문제점이 있고, 후자의 경우에는 전체적인 시설비가 비싸고 넓은 설치공간이 필요하여 실외에만 설치가능할 뿐만 아니라 고가의 촉매사용으로 인해 유지비용이 많이 드는 문제점이 있다.Examples of facilities for reducing the emission of volatile organic compounds include adsorptive equipment for adsorbing volatile organic compounds through an adsorbent such as activated carbon and catalytic equipment for removing volatile organic compounds at low temperatures by using a catalyst. In the case of the former, the facility cost is very expensive and a wide installation space is required, so that not only can it be installed outdoors, but also the adsorption efficiency becomes lower as the use thereof becomes more, and the maintenance cost due to regular replacement of the adsorbent is increased. Secondary environmental pollution occurs due to the waste adsorbent And in the latter case, the overall facility cost is high and a large installation space is required, so that it can be installed only outdoors, and the maintenance cost is increased due to the use of expensive catalyst.

또한 유동층코팅건조기(100)의 배기구(117)로 배출되는 열풍에 함유된 휘발성유기화합물을 최대한 흡착한다 하더라도 휘발성유기화합물을 100% 제거하여 순수 공기만 외부로 대기방출할 수는 없으므로, 휘발성유기화합물의 방출을 감소하기 위한 종래의 설비의 경우에는 휘발성유기화합물이 회수된 배기가스가 최종적으로는 대기중으로 방출됨에 따라 미미한 대기오염이 발생될 수 밖에 없는 문제점이 있었다. 이러한 문제점은 본 출원인이 출원하여 등록받은 바 있는 한국특허등록 제10-1106531호에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치에서도 마찬가지로 발생된다.Further, even if the volatile organic compounds contained in the hot air discharged to the exhaust port 117 of the fluidized bed coating dryer 100 are adsorbed to the maximum, 100% of the volatile organic compounds can be removed and only pure air can not be released to the outside. In the case of the conventional equipment for reducing the emission of the volatile organic compounds, there is a problem that the exhaust gas from which the volatile organic compounds have been recovered is eventually discharged into the atmosphere, resulting in minimal air pollution. This problem also occurs in a volatile organic compound recovery apparatus of a fluidized bed coating dryer according to Korean Patent Registration No. 10-1106531, which is filed and registered by the present applicant.

따라서 본 발명의 목적은, 유동층코팅건조기의 배기가스를 순차적으로 응축시켜 응축폐수와 휘발성유기화합물을 별도 회수함으로써 적은 시설비와 유지비용으로 휘발성유기화합물의 회수효율을 증대시킬 수 있도록 한 유동층코팅건조기의 휘발성유기화합물 회수장치를 제공하는 것이다.It is therefore an object of the present invention to provide a fluidized bed coating dryer capable of increasing the recovery efficiency of volatile organic compounds with a small facility cost and a maintenance cost by separately collecting condensed wastewater and volatile organic compounds by sequentially condensing the exhaust gas of a fluid bed coating dryer And to provide a volatile organic compound recovery apparatus.

본 발명의 다른 목적은, 휘발성유기화합물이 회수된 배기가스를 대기중으로 방출시키지 않고 가열 후 유동층코팅건조기 내로 다시 제공함으로써 휘발성유기화합물이 회수된 배기가스의 대기방출에 따른 미미한 환경오염의 개연성까지 제거될 수 있도록 한 유동층코팅건조기의 휘발성유기화합물 회수장치를 제공하는 것이다.It is another object of the present invention to provide a method for removing volatile organic compounds from exhaust gas by recovering volatile organic compounds from exhaust gas discharged from a volatile organic compound And a volatile organic compound recovery device of a fluidized bed coating dryer.

전술한 본 발명의 목적들은, 유동층코팅건조기의 배기구를 통해 배출되는 배기가스 중에 함유된 휘발성유기화합물을 회수하는 유동층코팅건조기의 휘발성유기화합물 회수장치에 있어서, 상기 유동층코팅건조기의 배기구에 연결되고 상기 배기구를 통해 강제유입되는 배기가스를 1차 응축시켜 응축폐수를 배출시키는 제 1 응축유닛과, 상기 제 1 응축유닛에 연결되는 응축폐수저장탱크와, 상기 제 1 응축유닛에 연결되고 상기 제 1 응축유닛에 의해 1차 응축된 배기가스를 2차 응축시켜 상기 휘발성유기화합물을 배출시키는 제 2 응축유닛과, 상기 제 2 응축유닛에 연결되는 휘발성유기화합물저장탱크와, 상기 제 2 응축유닛에 연결되고 상기 제 2 응축유닛을 관류한 배기가스를 가열하여 상기 유동층코팅건조기로 순환제공하는 배기가스가열유닛을 포함하는 것을 특징으로 하는 유동층코팅건조기의 휘발성유기화합물 회수장치를 제공함에 의해 달성된다.The above objects of the present invention are achieved by a volatile organic compound recovery apparatus for a volatile organic compound recovery apparatus for recovering volatile organic compounds contained in exhaust gas discharged through an exhaust port of a fluidized bed coating drier, A condensing wastewater storage tank connected to the first condensing unit, and a second condensing unit connected to the first condensing unit and connected to the first condensing unit, wherein the first condensing unit is configured to condense the exhaust gas forced through the exhaust port to discharge condensed wastewater, A volatile organic compound storage tank connected to the second condensing unit, and a second condensing unit connected to the second condensing unit, wherein the volatile organic compound storage tank is connected to the second condensing unit And an exhaust gas heating unit that heats the exhaust gas passed through the second condensing unit and circulates the exhaust gas to the fluidized bed coating dryer Is achieved by providing that the volatile organic compound recovering apparatus of the fluid bed coating dryer according to claim.

본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치는, 상기 제 2 응축유닛과 상기 배기가스가열유닛 사이에 연결되고 상기 제 2 응축유닛을 거친 저온의 배기가스를 예열하는 배기가스예열유닛을 더 포함한다.The apparatus for recovering volatile organic compounds in a fluidized bed coating dryer according to the present invention further includes an exhaust gas preheating unit connected between the second condensing unit and the exhaust gas heating unit and preheating the low temperature exhaust gas through the second condensing unit .

본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치는, 상기 배기가스예열유닛와 상기 제 1 응축유닛 사이에 순환연결되는 냉각수순환관로와, 상기 냉각수순환관로 상에 설치되는 냉각수탱크를 더 포함하고, 상기 냉각수순환관로를 관류하는 냉각수는, 상기 배기가스예열유닛을 관류하면서 상기 제 2 응축유닛에 의해 응축된 배기가스를 예열함과 동시에 냉각된 후, 상기 제 1 응축유닛을 관류하면서 상기 제 1 응축유닛 내의 배기가스를 응축시킴과 동시에 가열된 다음, 다시 상기 배기가스예열유닛으로 계속적으로 순환된다.The apparatus for recovering volatile organic compounds in a fluidized bed coating drier according to the present invention further comprises a cooling water circulation conduit circulatingly connected between the exhaust gas preheating unit and the first condensing unit and a cooling water tank provided on the cooling water circulation conduit, The cooling water flowing through the cooling water circulation conduit is cooled by the preheating of the exhaust gas condensed by the second condensing unit while flowing through the exhaust gas preheating unit and the cooling water is circulated through the first condensing unit, The exhaust gas in the unit is condensed and heated, and then is continuously circulated back to the exhaust gas warming unit.

본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치는, 상기 배기가스예열유닛에 연결되고 상기 배기가스예열유닛에 의해 예열된 배기가스를 냉각수와 열교환시켜 냉각시킴과 동시에 압축시키는 수냉식 가스압축기와, 상기 수냉식 가스압축기와 상기 유동층코팅건조기 사이에 설치되고 상기 수냉식 가스압축기에 의해 냉각된 저온의 배기가스를 저장하여 상기 유동층코팅건조기 내의 온도조절 또는 냉각을 위해 제공하는 압축탱크를 더 포함한다.The apparatus for recovering volatile organic compounds in a fluidized bed coating drier according to the present invention comprises a water-cooled gas compressor connected to the exhaust gas preheating unit and performing heat exchange with exhaust gas preheated by the exhaust gas preheating unit, And a compression tank disposed between the water-cooled gas compressor and the fluidized-bed coating drier and storing a low-temperature exhaust gas cooled by the water-cooled gas compressor to provide temperature control or cooling in the fluidized bed coating dryer.

본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치는, 상기 유동층코팅건조기의 배기구와 상기 제 1 응축유닛 사이에 구비되고 상기 배기가스에 함유된 먼지와 이물질을 포집하는 집진기와, 상기 집진기와 상기 제 1 응축유닛 사이에 구비되고 상기 배기가스에 대한 강제이송력을 발생시키는 블로어를 더 포함한다.The apparatus for recovering volatile organic compounds in a fluidized bed coating drier according to the present invention comprises a dust collector disposed between an exhaust port of the fluid bed coating dryer and the first condensing unit for collecting dust and foreign substances contained in the exhaust gas, And a blower provided between the first condensing unit and generating a forced feed force for the exhaust gas.

본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치에 의하면, 유동층코팅건조기의 배기가스가 1차 응축유닛에서 냉각수와의 열교환을 통해 1차 응축되어 응축폐수가 분리된 후 유동층코팅건조기의 배기가스가 2차 응축유닛에서 냉매와의 열교환을 통해 저온으로 2차 응축되어 휘발성유기화합물이 분리 회수됨에 따라, 적은 시설비와 유지비용으로 휘발성유기화합물의 회수효율이 증대될 수 있는 탁월한 효과가 있다.According to the volatile organic compound recovery apparatus of the fluidized bed coating drier according to the present invention, the exhaust gas of the fluidized bed coating drier is firstly condensed through heat exchange with the cooling water in the primary condensation unit, the condensed wastewater is separated, Is secondarily condensed at a low temperature through heat exchange with the refrigerant in the secondary condensing unit and the volatile organic compound is separated and recovered. Thus, there is an excellent effect that the recovery efficiency of the volatile organic compound can be increased with a low facility cost and a maintenance cost.

또한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치에 의하면, 휘발성유기화합물이 회수된 배기가스가 대기중으로 그대로 방출되는 것이 아니라 휘발성유기화합물이 회수된 배기가스가 배기가스가열유닛에 의해 가열된 후 유동층코팅건조기 내로 다시 제공됨으로써 유통층코팅건조를 위한 열풍으로 재순환됨에 따라 배기가스의 대기방출에 따른 미미한 환경오염의 개연성까지 제거될 수 있는 탁월한 효과가 있다.According to the apparatus for recovering volatile organic compounds in a fluidized bed coating dryer according to the present invention, the exhaust gas from which volatile organic compounds have been recovered is not directly discharged into the atmosphere but the exhaust gas from which volatile organic compounds have been recovered is heated by the exhaust gas heating unit It is provided again in the fluidized-bed coating dryer, so that there is an excellent effect that even the possibility of environmental pollution due to the atmospheric release of the exhaust gas can be removed as the circulating layer is recycled as hot air for coating drying.

또한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치에 의하면, 휘발성유기화합물이 회수된 배기가스가 대기중으로 그대로 방출되는 것이 아니라 휘발성유기화합물이 회수된 배기가스의 일부는 수냉식 가스압축기에 의해 냉각된 후 유동층코팅건조기 내의 온도조절 또는 냉각을 위한 용도로 사용될 수 있도록 압축탱크로 저장됨에 따라 배기가스의 대기방출에 따른 미미한 환경오염의 개연성까지 제거될 수 있는 탁월한 효과가 있다.According to the apparatus for recovering volatile organic compounds in the fluidized bed coating drier according to the present invention, the exhaust gas from which the volatile organic compounds are recovered is not directly discharged into the atmosphere, but a part of the exhaust gas from which the volatile organic compounds have been recovered is cooled And is stored in a compressed tank so that it can be used for temperature control or cooling in a fluidized bed coating dryer, there is an excellent effect that even the possibility of environmental pollution due to atmospheric release of exhaust gas can be eliminated.

뿐만 아니라 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치에 의하면, 냉각수가 배기가스예열유닛을 관류하면서 상기 제 2 응축유닛에 의해 응축된 배기가스를 예열함과 동시에 냉각된 후 상기 제 1 응축유닛을 관류하면서 상기 제 1 응축유닛 내의 배기가스를 응축시킴과 동시에 가열된 다음 다시 상기 배기가스예열유닛으로 계속적으로 순환됨에 따라 냉각수의 냉각을 위한 열효율이 대폭 증대될 수 있는 탁월한 효과가 있다.In addition, according to the volatile organic compound recovery apparatus of the fluidized bed coating drier according to the present invention, the cooling water preheats the exhaust gas condensed by the second condensing unit while flowing through the exhaust gas preheating unit, There is an excellent effect that the thermal efficiency for cooling the cooling water can be greatly increased as the exhaust gas in the first condensing unit is condensed while being flowed through the unit and is continuously circulated to the exhaust gas preheating unit after being heated.

도 1은 종래의 유동층코팅건조기의 개략구조도.
도 2는 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치의 블럭구성도.
도 3은 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치의 부분상세구성도.1 is a schematic structural view of a conventional fluidized bed coating dryer;
2 is a block diagram of a volatile organic compound recovery device in a fluidized bed coating dryer according to the present invention.
3 is a partial schematic view of the apparatus for recovering volatile organic compounds in a fluidized bed coating dryer according to the present invention.

이하에는, 본 발명의 바람직한 실시예를 첨부도면을 참조하여 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. , And this does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)는, 도 1에 도시되는 유동층코팅건조기(100)의 배기구(117)를 통해 배출되는 배기가스 중에 함유된 휘발성유기화합물을 회수하기 위한 것으로, 도 2 및 도 3에 도시되는 바와 같이, 유동층코팅건조기(100)의 배기구(117)에 연결되고 배기구(117)를 통해 강제유입되는 배기가스를 응축시켜 응축폐수를 배출시키는 제 1 응축유닛(10)과, 제 1 응축유닛(10)에 연결되는 응축폐수저장탱크(11)와, 제 1 응축유닛(10)에 연결되고 제 1 응축유닛(10)에 의해 1차 응축된 배기가스를 2차 응축시켜 휘발성유기화합물을 배출시키는 제 2 응축유닛(20)과, 제 2 응축유닛(20)에 연결되는 휘발성유기화합물저장탱크(21)와, 제 2 응축유닛(20)에 연결되고 제 2 응축유닛(20)을 관류한 배기가스를 가열하여 유동층코팅건조기(100)로 순환제공하는 배기가스가열유닛(30)을 포함한다.The volatile organic compound recovery apparatus 1 of the fluidized bed coating drier according to the present invention is a device for recovering volatile organic compounds contained in the exhaust gas discharged through the exhaust port 117 of the fluidized bed coating dryer 100 shown in FIG. As shown in FIGS. 2 and 3, the first condensing unit 110 is connected to the exhaust port 117 of the fluid bed coating and drying apparatus 100 and condenses the exhaust gas forced through the exhaust port 117 to discharge the condensed wastewater. (10), a condensed wastewater storage tank (11) connected to the first condensing unit (10), and an exhaust gas pipe connected to the first condensing unit (10) and primarily condensed by the first condensing unit A volatile organic compound storage tank 21 connected to the second condensing unit 20; a second condensing unit 20 connected to the second condensing unit 20 and connected to the second condensing unit 20; 2 condensing unit 20 to the fluidized bed coating dryer 100, And an exhaust gas heating unit 30 that circulates the exhaust gas.

여기서, 제 1 응축유닛(10)은 유동층코팅건조기(100)의 배기구(117)로부터 유입되는 배기가스를 냉각수와의 열교환을 통해 응축시켜 응축폐수를 배출시키는 역할을 하는 것으로, 가스 유로가 형성되는 하우징(10a) 내에 냉각수가 관류하는 열교환기(10b)가 설치되는 통상의 수냉식 열교환장치 형태로 형성된다.The first condensing unit 10 serves to condense the exhaust gas flowing from the exhaust port 117 of the fluid bed coating and drying machine 100 through heat exchange with the cooling water to discharge the condensed wastewater. And is formed in the form of a conventional water-cooled heat exchanger in which a heat exchanger (10b) through which cooling water flows in the housing (10a).

통상 유동층코팅건조기(100)의 배기구(117)로부터 유입되는 배기가스의 온도는 약 70℃ 정도이며, 제 1 응축유닛(10)을 관류한 배기가스는 냉각수와의 열교환을 통해 1차 응축됨에 따라 약 40℃의 온도를 가진다.Usually, the temperature of the exhaust gas flowing from the exhaust port 117 of the fluidized bed coating dryer 100 is about 70 ° C., and the exhaust gas flowing through the first condensing unit 10 is first condensed through heat exchange with the cooling water And has a temperature of about 40 ° C.

전술한 제 1 응축유닛(10)에는 응축폐수저장탱크(11)가 별도 연결되는데, 이 응축폐수저장탱크(11)는 제 1 응축유닛(10) 내에서 배기가스가 1차 응축됨에 따라 발생되는 응축폐수를 분리저장하는 탱크이다. 응축폐수저장탱크(11) 내의 응축폐수는 차후에 설명될 압축탱크(80) 내에서 발생되어 또 다른 응축폐수저장탱크(81) 내에 저장되는 응축폐수와 함께 옥외저장조(13)에 저장된 후 최종적으로 폐수위탁처리된다.The condensing wastewater storage tank 11 is separately connected to the first condensing unit 10 and the condensing wastewater storage tank 11 is generated as the exhaust gas is first condensed in the first condensing unit 10 This is a tank for separating and storing the condensed wastewater. The condensed wastewater in the condensed wastewater storage tank 11 is stored in the outdoor storage tank 13 together with the condensed wastewater generated in the compression tank 80 to be described later and stored in another condensed wastewater storage tank 81, It is commissioned.

전술한 제 1 응축유닛(10)에는 제 2 응축유닛(20)이 연결되는데, 이 제 2 응축유닛(20)은 제 1 응축유닛(10)에 의해 1차 응축된 배기가스를 냉매와의 열교환을 통해 2차 응축시켜 휘발성유기화합물을 분리배출시키는 역할을 하는 것으로, 가스 유로가 형성되는 하우징(20a) 내에 냉매가 관류하는 열교환기(20b)가 설치되는 통상의 냉매식 열교환장치 형태로 형성된다. 제 2 응축유닛(20)에는 냉매의 순환을 위한 냉동기(20c)가 별도 부설연결된다.A second condensing unit 20 is connected to the first condensing unit 10 described above and the second condensing unit 20 is configured to heat the first condensed exhaust gas by the first condensing unit 10 to heat exchange with the refrigerant And is formed in the form of a conventional refrigerant type heat exchanger in which a heat exchanger 20b in which a refrigerant flows through a housing 20a in which a gas flow path is formed is provided . A refrigerator 20c for circulating the refrigerant is additionally connected to the second condensing unit 20.

전술한 바와 같이 제 1 응축유닛(10)을 관류한 배기가스의 온도는 약 40℃이고, 제 2 응축유닛(20)을 관류한 배기가스는 냉매와의 열교환을 통해 더욱 냉각되어 2차 응축됨에 따라 약 -22℃ 정도의 온도를 가진다.As described above, the temperature of the exhaust gas flowing through the first condensing unit 10 is about 40 DEG C, and the exhaust gas that has passed through the second condensing unit 20 is further cooled through heat exchange with the refrigerant and is secondarily condensed And thus has a temperature of about -22 ° C.

전술한 제 2 응축유닛(20)에는 휘발성유기화합물저장탱크(21)가 연결되는데, 이 휘발성유기화합물저장탱크(21)는 제 2 응축유닛(20) 내에서 배기가스가 2차 응축됨에 따라 발생되는 휘발성유기화합물을 분리저장하는 탱크이다. 휘발성유기화합물저장탱크(21) 내의 휘발성유기화합물은 옥외저장조(23)에 저장된 후 최종적으로 유동층코팅건조를 위한 코팅액의 유기용매로 재활용된다.The volatile organic compound storage tank 21 is connected to the second condensing unit 20 as described above. The volatile organic compound storage tank 21 is formed in the second condensing unit 20 as the exhaust gas is secondarily condensed Which is a tank for separating and storing volatile organic compounds. The volatile organic compounds in the volatile organic compound storage tank 21 are stored in the outdoor storage tank 23 and finally recycled as the organic solvent of the coating liquid for drying the fluidized bed coating.

전술한 제 2 응축유닛(20)에는 배기가스가열유닛(30)이 연결되는데, 이 연결되고 제 2 응축유닛(20)을 관류한 배기가스를 가열하여 유동층코팅건조기(100)로 순환제공하는 하는 것으로, 내부에 예를 들어 스팀순환식 발열히터가 구비되는 통상의 공기조화기 형태로 형성된다.The exhaust gas heating unit 30 is connected to the second condensing unit 20. The exhaust gas heated and circulated through the second condensing unit 20 is circulated to the fluidized bed coating dryer 100 And is formed in the form of a conventional air conditioner having, for example, a steam circulation type heater.

제 2 응축유닛(20)을 관류한 배기가스의 온도는 약 -22℃ 정도이지만, 배기가스가열유닛(30)을 관류한 배기가스의 온도는 유통층코팅건조에 알맞게 60 내지 90℃인 것이 바람직하다.The temperature of the exhaust gas flowing through the second condensing unit 20 is about -22 ° C, but the temperature of the exhaust gas flowing through the exhaust gas heating unit 30 is preferably 60 to 90 ° C Do.

제 2 응축유닛(20)을 관류한 저온의 배기가스를 배기가스가열유닛(30)로 직접 가열할 수도 있지만, 실시예에 따라서는 예열을 거치는 것이 바람직하다. 이러한 배기가스의 예열을 위하여 전술한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)는, 제 2 응축유닛(20)과 배기가스가열유닛(30) 사이에 연결되는 배기가스예열유닛(40)을 더 포함하는 것이 바람직하다.Although the exhaust gas at low temperature passed through the second condensing unit 20 can be directly heated to the exhaust gas heating unit 30, it is preferable to carry out preheating according to the embodiment. In order to preheat the exhaust gas, the volatile organic compound recovery apparatus 1 of the fluidized bed coating drier according to the present invention includes an exhaust gas preheating unit 30 connected between the second condensing unit 20 and the exhaust gas heating unit 30, (40).

배기가스예열유닛(40)은 제 2 응축유닛(20)을 거친 저온의 배기가스를 배기가스가열유닛(30)에 의한 가열에 앞서 예열하는 역할을 하는 것으로, 가스 유로가 형성되는 하우징(40a) 내에 상기 제 1 응축유닛(10)을 관류하면서 가열된 냉각수가 관류하는 열교환기(40b)가 설치되는 통상의 수가열식 열교환장치 형태로 형성된다.The exhaust gas preheating unit 40 serves to preheat the exhaust gas of low temperature through the second condensing unit 20 prior to the heating by the exhaust gas heating unit 30. The housing 40a, And a heat exchanger (40b) through which the heated cooling water flows while flowing through the first condensing unit (10).

전술한 제 1 응축유닛(10)에 의한 1차 응축과 배기가스예열유닛(40)에 의한 예열이 냉각수 순환에 의해 이루어질 수 있도록, 배기가스예열유닛(40)과 제 1 응축유닛(10) 사이에는 냉각수순환관로(50)가 순환연결됨과 동시에 냉각수순환관로 상에 냉각수 보충을 위한 냉각수탱크(60)가 설치되며, 냉각수탱크(60)는 냉각수의 냉각을 위한 냉동기(61)가 부설되는 것이 바람직하다.The first condensing unit 10 and the exhaust gas preheating unit 40 can be preheated by the cooling water circulation in the exhaust gas warming unit 40 and the first condensing unit 10 A cooling water tank 60 for cooling water replenishment is installed on the cooling water circulation line and a refrigerator 61 for cooling the cooling water is installed on the cooling water tank 60 Do.

따라서 냉각수순환관로(50)를 관류하는 냉각수는, 배기가스예열유닛(40)을 관류하면서 제 2 응축유닛(20)에 의해 응축된 배기가스를 예열함과 동시에 냉각된 후, 제 1 응축유닛(10)을 관류하면서 제 1 응축유닛(10) 내의 배기가스를 응축시킴과 동시에 가열된 다음, 다시 배기가스예열유닛(40)으로 계속적으로 순환된다.Accordingly, the cooling water flowing through the cooling water circulation duct 50 is cooled by the preheating of the exhaust gas condensed by the second condensing unit 20 while flowing through the exhaust gas preheating unit 40, 10, the exhaust gas in the first condensing unit 10 is condensed and heated, and then is continuously circulated to the exhaust gas preheating unit 40.

냉각수는 약 12℃의 온도를 가진 상태로 배기가스예열유닛(40)으로 제공되어 약 -22℃ 정도의 배기가스와 열교환되어 배기가스를 가열함과 동시에 약 7.5℃ 정도의 온도로 냉각되고, 다시 제 1 응축유닛(10)을 관류하면서 약 40℃의 온도의 배기가스와 열교환되어 배기가스를 1차 응축시킴과 동시에 다시 약 12℃의 온도로 가열된 다음 다시 배기가스예열유닛(40)으로 제공된다.The cooling water is supplied to the exhaust gas preheating unit 40 at a temperature of about 12 DEG C, and is heat-exchanged with the exhaust gas of about -22 DEG C to heat the exhaust gas. The cooling water is cooled to about 7.5 DEG C, Exchanges the exhaust gas with the exhaust gas at a temperature of about 40 캜 while flowing through the first condensing unit 10 to condense the exhaust gas first and then again to a temperature of about 12 캜 and then to the exhaust gas preheating unit 40 do.

또한 전술한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)는, 배기가스예열유닛(40)에 연결되는 수냉식 가스압축기(70)와, 이 수냉식 가스압축기(70)와 유동층코팅건조기 사이에 설치되는 압축탱크(80)를 더 포함하는 것이 바람직한데, 수냉식 가스압축기(70)는 배기가스예열유닛(40)에 의해 예열된 배기가스를 냉각수와 열교환시켜 냉각시킴과 동시에 압축시키고, 압축탱크(80)는 수냉식 가스압축기에 의해 냉각압축된 저온의 압축배기가스를 저장하여 다시 유동층코팅건조기(100) 내의 온도조절 또는 냉각을 위해 제공하는 역할을 한다. 아울러 압축탱크(80) 내에서 배기가스의 압축에 따라 발생되는 응축폐수는 응축폐수저장탱크(81) 내에 저장된 후 응축폐수저장탱크(11) 내의 응축폐수와 함께 최종적으로 폐수위탁처리된다.The apparatus 1 for recovering a volatile organic compound in the fluidized bed coating drier according to the present invention includes a water-cooled gas compressor 70 connected to an exhaust gas preheating unit 40, a water-cooled gas compressor 70, The water-cooled gas compressor 70 performs heat exchange between the exhaust gas preheated by the exhaust gas preheating unit 40 and the cooling water, thereby cooling the exhaust gas, compressing the exhaust gas, and compressing the compressed gas. The tank 80 serves to store the low-temperature compressed exhaust gas that has been cooled and compressed by the water-cooled gas compressor, and to provide temperature control or cooling in the fluidized bed coating dryer 100 again. The condensed wastewater generated in accordance with the compression of the exhaust gas in the compression tank (80) is stored in the condensed wastewater storage tank (81) and then finally treated with the wastewater in the condensed wastewater storage tank (11) together with the condensed wastewater.

또한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)는, 유동층코팅건조기(100)의 배기구(117)와 제 1 응축유닛(10) 사이에 구비되는 집진기(90)와, 집진기(90)와 제 1 응축유닛(10) 사이에 구비되고 배기가스에 대한 강제이송력을 발생시키는 블로어(91)를 더 포함하는 것이 바람직하다. The volatile organic compound recovery apparatus 1 of the fluidized bed coating drier according to the present invention includes a dust collector 90 provided between the exhaust port 117 of the fluidized bed coating dryer 100 and the first condensing unit 10, 90) and the first condensing unit (10) and generates a forced feed force for the exhaust gas.

집진기(90)는 유동층코팅건조기(100)의 배기구(117)로부터 배출되는 배기가스의 응축에 앞서 배기가스에 함유된 먼지와 이물질을 포집하는 것으로, 통상의 필터백 집진기로 형성되는 것이 바람직하다.The dust collector 90 collects dust and foreign matter contained in the exhaust gas prior to condensation of the exhaust gas discharged from the exhaust port 117 of the fluid bed coating dryer 100, and is preferably formed by a conventional filter bag dust collector.

이하, 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)의 전체작용을 설명하면 다음과 같다:Hereinafter, the overall operation of the apparatus 1 for recovering a volatile organic compound in a fluidized bed coating dryer according to the present invention will be described.

유동층코팅건조기(100)의 배기구(117)로는 건조대상물의 건조에 사용된 열풍과 함께 코팅액에 함유된 휘발성유기화합물이 열풍에 의해 휘발되어 함께 배출되는데, 이렇게 배출되는 배기가스는 집진기(90)를 거치면서 먼지와 이물질이 제거된 후, 제 1 응축유닛(10)으로 강제이송된다.The hot air used for drying the object to be dried together with the volatile organic compounds contained in the coating liquid is volatilized by the hot air and discharged together with the exhaust port 117 of the fluidized bed coating dryer 100. The exhaust gas thus discharged is discharged through the dust collector 90 After the dust and foreign matter are removed while being passed through, it is forcibly transferred to the first condensing unit 10.

제 1 응축유닛(10)으로 유입된 배기가스는 냉각수와의 열교환에 의해 1차 응축되며, 이 때 발생되는 응축폐수는 응축폐수저장탱크(11)에 저장된 후 폐수위탁처리된다.The exhaust gas flowing into the first condensing unit 10 is firstly condensed by heat exchange with the cooling water, and the condensed wastewater generated at this time is stored in the condensed wastewater storage tank 11 and then subjected to waste water treatment.

제 1 응축유닛(10)을 관류한 배기가스는 제 2 응축유닛(20) 내로 유입되어 냉매와의 열교환에 의해 저온으로 2차 냉각되며, 이 때 휘발성유기화합물이 액상으로 응축되고, 이렇게 분리된 휘발성유기화합물은 옥외저장조(23)에 저장된 후 최종적으로 유동층코팅건조를 위한 코팅액의 유기용매로 재활용된다. The exhaust gas flowing through the first condensing unit 10 flows into the second condensing unit 20 and is secondarily cooled at a low temperature by heat exchange with the refrigerant. At this time, the volatile organic compound condenses into a liquid phase, The volatile organic compounds are stored in the outdoor storage tank 23 and finally recycled as the organic solvent of the coating liquid for drying the fluidized bed coating.

제 2 응축유닛(20)을 관류한 저온의 배기가스는 대지중으로 방출되는 것이 아니라 배기가스예열유닛(40)을 관류하면서 냉각수와의 열교환을 통해 예열된 후 배기가스가열유닛(30)을 관류하면서 유통층코팅건조에 알맞게 60 내지 90℃의 온도로 가열된 다음 유동층코팅건조기(100) 내로 다시 제공되어 유동층코팅건조를 위한 열풍으로 활용된다.The low-temperature exhaust gas flowing through the second condensing unit 20 is not discharged into the earth but is preheated through heat exchange with the cooling water while flowing through the exhaust gas preheating unit 40 and then flows through the exhaust gas heating unit 30 The layer is heated to a temperature of 60 to 90 캜 suitable for coating and drying, and then supplied again into the fluidized bed coating dryer 100 to be utilized as a hot air for drying the fluidized bed coating.

따라서 전술한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)의 경우에는, 유동층코팅건조기(100)의 배기가스가 1차 응축유닛(10)에서 냉각수와의 열교환을 통해 1차 응축되어 응축폐수가 분리된 후 유동층코팅건조기(100)의 배기가스가 제 2 응축유닛(20)에서 냉매와의 열교환을 통해 저온으로 2차 응축되어 휘발성유기화합물이 분리 회수됨에 따라, 적은 시설비와 유지비용으로 휘발성유기화합물의 회수효율이 증대될 수 있다.Accordingly, in the case of the apparatus 1 for recovering volatile organic compounds in the fluidized bed coating dryer according to the present invention, the exhaust gas from the fluidized bed coating dryer 100 is subjected to primary condensation through heat exchange with the cooling water in the primary condensing unit 10 After the condensed wastewater is separated, the exhaust gas from the fluidized bed coating drier 100 is secondarily condensed at a low temperature through heat exchange with the refrigerant in the second condensing unit 20, so that the volatile organic compounds are separated and recovered. The recovery efficiency of the volatile organic compound can be increased.

또한 전술한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)의 경우에는, 휘발성유기화합물이 회수된 배기가스가 대기중으로 그대로 방출되는 것이 아니라 휘발성유기화합물이 회수된 배기가스가 배기가스가열유닛(30)에 의해 가열된 후 유동층코팅건조기(100) 내로 다시 제공됨으로써 유통층코팅건조를 위한 열풍으로 재순환됨에 따라 배기가스의 대기방출에 따른 미미한 환경오염의 개연성까지 제거될 수 있다.In the case of the apparatus 1 for recovering volatile organic compounds in the fluidized bed coating drier according to the present invention, the exhaust gas from which the volatile organic compound is recovered is not discharged into the atmosphere as it is, Is heated again by the heating unit 30 and then supplied again into the fluidized bed coating dryer 100 so that the possibility of a slight environmental pollution due to the atmospheric release of the exhaust gas can be removed as the circulating layer coating is recycled as hot air for drying.

또한 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)에 의하면, 휘발성유기화합물이 회수된 배기가스의 일부가 수냉식 가스압축기(70)에 의해 냉각된 후 유동층코팅건조기(100) 내의 온도조절 또는 냉각을 위한 용도로 사용될 수 있도록 압축탱크(80)로 저장됨에 따라 배기가스의 대기방출에 따른 미미한 환경오염의 개연성까지 제거될 수 있다.Further, according to the volatile organic compound recovery apparatus 1 of the fluidized bed coating drier according to the present invention, a part of the exhaust gas from which the volatile organic compound is recovered is cooled by the water-cooled gas compressor 70, The possibility of minimal environmental pollution due to the atmospheric release of the exhaust gas can be removed as it is stored in the compression tank 80 so that it can be used for control or cooling purposes.

뿐만 아니라 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치(1)에 의하면, 냉각수가 배기가스예열유닛(40)을 관류하면서 제 2 응축유닛(20)에 의해 응축된 배기가스를 예열함과 동시에 냉각된 후 제 1 응축유닛(10)을 관류하면서 제 1 응축유닛(10) 내의 배기가스를 응축시킴과 동시에 가열된 다음 다시 배기가스예열유닛(40)으로 계속적으로 순환됨에 따라 냉각수순환관로(50)를 순환하는 동일한 냉각수로 배기가스의 1차 응축과 예열을 실현함으로써 냉각수의 냉각을 위한 열효율이 대폭 증대될 수 있다.In addition, according to the volatile organic compound recovery apparatus 1 of the fluidized bed coating dryer of the present invention, the cooling water preheats the exhaust gas condensed by the second condensing unit 20 while flowing through the exhaust gas preheating unit 40 The exhaust gas in the first condensing unit 10 is condensed while being flowed through the first condensing unit 10 after being cooled simultaneously and then heated and then continuously circulated to the exhaust gas preheating unit 40, 50 to achieve the first condensation and preheating of the exhaust gas, the thermal efficiency for cooling the cooling water can be greatly increased.

1 : 본 발명에 따른 유동층코팅건조기의 휘발성유기화합물 회수장치
10 : 제 1 응축유닛
20 : 제 2 응축유닛
30 : 배기가스가열유닛
40 : 배기가스예열유닛
50 : 냉각수순환관로
60 : 냉각수탱크
70 : 수냉식 가스압축기
80 : 압축탱크
90 : 집진기
100 : 유동층코팅건조기
117 : 배기구1: Volatile organic compound recovery device of a fluidized bed coating dryer according to the present invention
10: first condensing unit
20: the second condensing unit
30: Exhaust gas heating unit
40: Exhaust gas preheating unit
50: Cooling water circulation duct
60: Cooling water tank
70: Water-cooled gas compressor
80: Compression tank
90: Dust collector
100: Fluidized bed coating dryer
117: Exhaust

Claims (5)

유동층코팅건조기의 배기구를 통해 배출되는 배기가스 중에 함유된 휘발성유기화합물을 회수하는 유동층코팅건조기의 휘발성유기화합물 회수장치에 있어서,
상기 유동층코팅건조기의 배기구에 연결되고 상기 배기구를 통해 강제유입되는 배기가스를 1차 응축시켜 응축폐수를 배출시키는 제 1 응축유닛;
상기 제 1 응축유닛에 연결되는 응축폐수저장탱크;
상기 제 1 응축유닛에 연결되고 상기 제 1 응축유닛에 의해 1차 응축된 배기가스를 2차 응축시켜 상기 휘발성유기화합물을 배출시키는 제 2 응축유닛;
상기 제 2 응축유닛에 연결되는 휘발성유기화합물저장탱크;
상기 제 2 응축유닛에 연결되고 상기 제 2 응축유닛을 관류한 배기가스를 가열하여 상기 유동층코팅건조기로 순환제공하는 배기가스가열유닛; 및
상기 제 2 응축유닛과 상기 배기가스가열유닛 사이에 연결되고 상기 제 2 응축유닛을 거친 저온의 배기가스를 예열하는 배기가스예열유닛을 포함하는 것을 특징으로 하는 유동층코팅건조기의 휘발성유기화합물 회수장치.A volatile organic compound recovery apparatus for a fluidized bed coating drier for recovering volatile organic compounds contained in an exhaust gas discharged through an exhaust port of a fluidized bed coating dryer,
A first condensing unit connected to an exhaust port of the fluid bed coating dryer and discharging condensed wastewater by first condensing the exhaust gas forcedly supplied through the exhaust port;
A condensing wastewater storage tank connected to the first condensing unit;
A second condensing unit connected to the first condensing unit and for discharging the volatile organic compound by secondary condensing the exhaust gas which is first condensed by the first condensing unit;
A volatile organic compound storage tank connected to the second condensing unit;
An exhaust gas heating unit connected to the second condensing unit and heating and circulating exhaust gas passed through the second condensing unit to the fluidized bed coating dryer; And
And an exhaust gas preheating unit connected between the second condensing unit and the exhaust gas heating unit and preheating the low temperature exhaust gas through the second condensing unit. 청구항 1에 있어서,
상기 배기가스예열유닛와 상기 제 1 응축유닛 사이에 순환연결되는 냉각수순환관로; 및
상기 냉각수순환관로 상에 설치되는 냉각수탱크;를 더 포함하고,
상기 냉각수순환관로를 관류하는 냉각수는, 상기 배기가스예열유닛을 관류하면서 상기 제 2 응축유닛에 의해 응축된 배기가스를 예열함과 동시에 냉각된 후, 상기 제 1 응축유닛을 관류하면서 상기 제 1 응축유닛 내의 배기가스를 응축시킴과 동시에 가열된 다음, 다시 상기 배기가스예열유닛으로 계속적으로 순환되는 것을 특징으로 하는 유동층코팅건조기의 휘발성유기화합물 회수장치.The method according to claim 1,
A cooling water circulation conduit circulatingly connected between the exhaust gas preheating unit and the first condensing unit; And
And a cooling water tank installed on the cooling water circulation pipe,
The cooling water flowing through the cooling water circulation conduit is cooled by the preheating of the exhaust gas condensed by the second condensing unit while flowing through the exhaust gas preheating unit and the cooling water is circulated through the first condensing unit, Wherein the exhaust gas in the unit is condensed and heated, and then is continuously circulated to the exhaust gas preheating unit. 청구항 1 또는 청구항 2에 있어서,
상기 배기가스예열유닛에 연결되고 상기 배기가스예열유닛에 의해 예열된 배기가스를 냉각수와 열교환시켜 냉각시킴과 동시에 압축시키는 수냉식 가스압축기; 및
상기 수냉식 가스압축기와 상기 유동층코팅건조기 사이에 설치되고 상기 수냉식 가스압축기에 의해 냉각된 저온의 배기가스를 저장하여 상기 유동층코팅건조기 내의 온도조절 또는 냉각을 위해 제공하는 압축탱크를 더 포함하는 것을 특징으로 하는 유동층코팅건조기의 휘발성유기화합물 회수장치.The method according to claim 1 or 2,
A water-cooled gas compressor connected to the exhaust gas preheating unit, for cooling and simultaneously compressing the exhaust gas preheated by the exhaust gas preheating unit by heat exchange with the cooling water; And
And a compression tank installed between the water-cooled gas compressor and the fluidized-bed coating drier and storing a low-temperature exhaust gas cooled by the water-cooled gas compressor to provide temperature control or cooling in the fluidized bed coating dryer. Volatile organic compound recovery device of a fluidized bed coating dryer. 청구항 1 또는 청구항 2에 있어서,
상기 유동층코팅건조기의 배기구와 상기 제 1 응축유닛 사이에 구비되고 상기 배기가스에 함유된 먼지와 이물질을 포집하는 집진기; 및
상기 집진기와 상기 제 1 응축유닛 사이에 구비되고 상기 배기가스에 대한 강제이송력을 발생시키는 블로어를 더 포함하는 것을 특징으로 하는 유동층코팅건조기의 휘발성유기화합물 회수장치.The method according to claim 1 or 2,
A dust collector disposed between the exhaust port of the fluid bed coating dryer and the first condensing unit and collecting dust and foreign matter contained in the exhaust gas; And
Further comprising a blower provided between the dust collector and the first condensing unit to generate a forced feed force for the exhaust gas. 삭제delete
KR1020120048225A 2012-05-07 2012-05-07 Apparatus for recovering volatile organic compounds of fluidized-bed dryer KR101573428B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200421694Y1 (en) * 2006-04-06 2006-07-14 이영종 Water Cooling Collection Apparatus of Organic Compound
KR100827568B1 (en) 2007-07-10 2008-05-07 이진식 Apparatus for recovering volatile organic compounds
KR101106531B1 (en) * 2011-03-11 2012-01-20 주식회사 영일이엔지 Apparatus for recovering volatile organic compounds of fluidized-bed dryer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200421694Y1 (en) * 2006-04-06 2006-07-14 이영종 Water Cooling Collection Apparatus of Organic Compound
KR100827568B1 (en) 2007-07-10 2008-05-07 이진식 Apparatus for recovering volatile organic compounds
KR101106531B1 (en) * 2011-03-11 2012-01-20 주식회사 영일이엔지 Apparatus for recovering volatile organic compounds of fluidized-bed dryer

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