KR100280122B1 - Filter press and its dehydration method - Google Patents
Filter press and its dehydration method Download PDFInfo
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- KR100280122B1 KR100280122B1 KR1019980046475A KR19980046475A KR100280122B1 KR 100280122 B1 KR100280122 B1 KR 100280122B1 KR 1019980046475 A KR1019980046475 A KR 1019980046475A KR 19980046475 A KR19980046475 A KR 19980046475A KR 100280122 B1 KR100280122 B1 KR 100280122B1
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- filter
- cake
- pressurized fluid
- slurry
- filter cloth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
- B01D25/284—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by gases or by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Filtration Of Liquid (AREA)
Abstract
본 발명은, 여과틀과, 케이크를 압착하기 위한 압착식여과판과, 상기 여과틀과 상기 압착식여과판 사이에 개재되며 케이크를 수용하는 여과포와, 상기 여과포사이에 슬러리를 공급하는 슬러리공급펌프를 갖는 필터프레스에 관한 것으로서, 상기 압착식여과판내에 공급되어 상기 여과포내의 케이크를 가압할 압착유체를 가열하는 가열수단과; 상기 가열된 압착유체를 상기 압착식여과판내에 공급하는 유체공급펌프를 포함하는 것을 특징으로 한다. 이에 의하여, 압착유체를 통해 여과포내의 케이크를 2차 가압여과함과 동시에 열전달에 의해 케이크내의 수분을 증발시켜 케이크의 함수율을 저하시킬 수 있다.The present invention has a filter frame, a crimping filter plate for compressing a cake, a filter cloth interposed between the filter frame and the crimping filter plate to accommodate a cake, and a slurry supply pump for supplying a slurry between the filter fabrics. A filter press, comprising: heating means for heating a pressurized fluid which is supplied into the press-type filtration plate to pressurize a cake in the filter cloth; And a fluid supply pump for supplying the heated compressed fluid into the compressed filter plate. As a result, the cake in the filter cloth is subjected to secondary pressure filtration through the pressurized fluid, and at the same time, the moisture in the cake can be evaporated by heat transfer to lower the water content of the cake.
Description
본 발명은, 필터프레스와 그 탈수방법에 관한 것으로서, 보다 상세하게는, 압착유체를 통해 여과포내의 케이크를 2차 가압여과함과 동시에 열전달에 의해 슬러리내의 수분을 증발시켜 케이크의 함수율을 저하시킬 수 있도록 한 필터프레스와 그 탈수방법에 관한 것이다.The present invention relates to a filter press and a dehydration method thereof, and more particularly, to secondary pressure filtration of a cake in a filter cloth through a pressurized fluid, and at the same time to evaporate the water in the slurry by heat transfer to reduce the water content of the cake. The filter press and the dewatering method thereof.
일반적으로 필터프레스는 여과하고자 하는 슬러리원액을 슬러리공급펌프에 의해 여과판 내에 압입함에 따라 여과판 내에 설치되어 있는 여과포를 통해 슬러리원액을 가압여과하거나, 별도의 압착식여과판을 마련하여 압착식여과판에 압착유체를 주입시켜 케이크를 2차 가압여과함에 따라 공급된 슬러리원액을 여과액과 케이크로 분리하는 장치이다.In general, the filter press is pressurized by filtering the slurry stock solution through the filter cloth installed in the filter plate by injecting the slurry stock solution to be filtered into the filter plate by the slurry supply pump, or by providing a separate compression filter plate to the pressure fluid to the compression filter plate It is an apparatus for separating the supplied slurry stock solution into the filtrate and the cake by the secondary pressure filtration of the cake.
도 4는 종래의 필터프레스를 개략적으로 도시한 설비도이다. 이 도면에 도시된 바와 같이, 종래의 필터프레스는 슬러리원액을 공급하는 슬러리공급부(101)와, 공급된 슬러리원액을 여과하는 여과부(103)와, 여과부(103)에 압착유체를 공급하는 압착유체공급부(105)와, 여과부(103)에 압축공기를 공급하는 압축공기공급부(107)를 가진다.Figure 4 is a schematic diagram showing a conventional filter press. As shown in this figure, the conventional filter press is a slurry supply unit 101 for supplying a slurry stock solution, a filtration unit 103 for filtering the supplied slurry stock solution, and a pressurized fluid to supply the filtration unit 103 It has a compressed fluid supply part 105 and the compressed air supply part 107 which supplies compressed air to the filtration part 103. As shown in FIG.
슬러리공급부(101)는 슬러리저장부(109)와, 슬러리공급펌프(111)를 가지며, 필터프레스의 여과공정에 따라 개폐 가능한 슬러리공급밸브(115)가 슬러리공급펌프(111)와 여과부(103) 사이를 연결하는 슬러리공급관(113)에 설치되어 있다.The slurry supply unit 101 includes a slurry storage unit 109 and a slurry supply pump 111, and a slurry supply valve 115 that can be opened and closed according to the filtration process of the filter press is provided with a slurry supply pump 111 and a filtration unit 103. ) Is installed in the slurry supply pipe 113 to connect between.
여과부(103)는 도시하지 않은 다수의 여과틀과, 여과틀 사이에 개재된 압착식여과판을 가지며, 여과틀과 압착식여과판 사이에는 도시하지 않은 한 쌍의 여과포가 개재되어 있다.The filtration unit 103 has a plurality of filter frames (not shown) and a compression filter plate interposed between the filter frames, and a pair of filter cloths (not shown) are interposed between the filter frame and the compression filter plate.
여과부(103)의 압착식여과판에 압착유체를 공급하는 압착유체공급부(105)는 압착유체저장부(143)와, 압착유체를 여과부(103)내에 설치된 각각의 압착식여과판에 공급하는 압착유체공급펌프(145)를 가지며, 여과부(103)와 압착유체공급펌프(145)를 연결하는 압착유체공급관(147)에는 개폐 가능한 압착유체공급밸브(149)가 설치되어 있다. 여과부(103)와 압착유체저장부(143) 사이에는 압착식여과판(119)에 공급된 압착유체가 복귀될 수 있도록 압착유체복귀관(159)이 설치되어 있으며, 압착유체복귀관(159)에는 개폐 가능한 압착유체복귀밸브(161)가 설치되어 있다.The pressurized fluid supply part 105 for supplying the pressurized fluid to the pressurized filtration plate of the filter part 103 has a pressurized fluid storage part 143 and a pressurized fluid for supplying the pressurized fluid to each pressurized filter plate installed in the filter part 103. The pressurized fluid supply pipe 147 having a fluid supply pump 145 and connecting the filtration unit 103 and the pressurized fluid supply pump 145 is provided with a pressurized fluid supply valve 149 that can be opened and closed. A pressurized fluid return pipe 159 is installed between the filtration part 103 and the pressurized fluid storage part 143 so that the pressurized fluid supplied to the pressurized filtration plate 119 is returned, and the pressurized fluid return pipe 159 is provided. The pressurized fluid return valve 161, which can be opened and closed, is provided.
또한, 여과부(103)내에서 여과되면서 추출되는 여과액을 수용하기 위해서 여과부(103)와 여과액저장부(129) 사이에는 여과액유동관(131)이 연결되어 있으며, 여과액유동관(131)에는 개폐 가능한 여과액유동밸브(133)가 설치되어 있다. 여과부(103)에서 여과되어 여과액과 분리된 케이크를 케이크저장부(125)에 이송하기 위해서 여과부(103)의 하부에는 케이크이송장치(127)가 설치되어 있다.In addition, the filtrate flow tube 131 is connected between the filtrate 103 and the filtrate storage unit 129 to accommodate the filtrate extracted while being filtered in the filtrate 103, the filtrate flow tube 131 ) Is provided with a filtrate flow valve 133 that can be opened and closed. In order to transfer the cake separated from the filtrate by the filtration unit 103 to the cake storage unit 125, a cake transfer device 127 is provided below the filtration unit 103.
압축공기공급부(107)는 압축기(135)와, 압축기(135)로부터 발생된 압축공기를 저장하는 압축공기저장부(137)를 가지며, 압축공기저장부(137)와 여과부(105)사이에는 압축공기공급관(139)이 설치되어 있다. 또한, 압축공기공급관(139)에는 개폐 가능한 압축공기공급밸브(141)가 설치되어 있다.The compressed air supply unit 107 has a compressor 135, and a compressed air storage unit 137 for storing the compressed air generated from the compressor 135, between the compressed air storage unit 137 and the filtration unit 105 The compressed air supply pipe 139 is installed. In addition, the compressed air supply pipe 139 is provided with a compressed air supply valve 141 that can be opened and closed.
이상과 같은 구성에 의하여, 슬러리공급밸브(115)가 개방되어 슬러리저장부(109)로부터 슬러리공급펌프(111)를 통해 여과부(103) 내부에 슬러리를 가압공급하면, 여과포 사이에 공급된 슬러리는 슬러리공급펌프(111)의 펌핑압력에 의해 가압되어 1차 가압여과되며, 1차 가압여과에 의해 슬러리와 분리된 여과액은 여과액유동관(131)을 따라 유동하여 여과액유동관(131)에 설치된 여과액유동밸브(133)를 지나 여과액저장부(129)에 수용된다.By the above configuration, when the slurry supply valve 115 is opened to pressurize and supply the slurry from the slurry storage part 109 to the filter part 103 through the slurry supply pump 111, the slurry supplied between the filter cloths is supplied. Is pressurized by the pumping pressure of the slurry supply pump 111 and the primary pressure filtration, and the filtrate separated from the slurry by the primary pressure filtration flows along the filtrate flow pipe 131 to the filtrate flow pipe 131 Passed through the installed filtrate flow valve 133 is accommodated in the filtrate storage unit (129).
1차 가압여과가 완료되면, 슬러리공급밸브(115)는 폐쇄되며, 압축공기공급밸브(141)가 개방되어 압축공기저장부(137)로부터 압축공기가 압축공기공급관(139)을 통해 여과부(103)에 공급된다. 공급된 압축공기는 여과포 내에 수용되어 있는 1차 가압여과된 케이크를 통과하면서 케이크주위의 수분을 강제 토출시킨다.When the primary pressure filtration is completed, the slurry supply valve 115 is closed, and the compressed air supply valve 141 is opened so that compressed air from the compressed air storage unit 137 is filtered through the compressed air supply pipe 139. 103). The compressed air supplied is forced to discharge moisture around the cake while passing through the first pressurized cake contained in the filter cloth.
압축공기에 의해 1차 가압여과된 케이크주위의 수분이 강제 토출되면, 압축공기공급밸브(141)가 폐쇄되며, 압착유체공급밸브(149)가 개방되어 압착유체저장부(143)에 수용되어 있는 압착유체가 압착유체공급펌프(145)에 의해 여과부(103)의 압착식여과판에 공급된다. 압착식여과판에 압착유체가 공급되면, 압착유체의 압력에 의해 압착식여과판이 소정 팽창하여 여과포에 수용된 1차 가압여과된 케이크를 2차 가압시킨다.When moisture around the cake that is primarily pressurized by compressed air is forcibly discharged, the compressed air supply valve 141 is closed, and the compressed fluid supply valve 149 is opened to accommodate the compressed fluid storage unit 143. The pressurized fluid is supplied to the press-type filtration plate of the filtration unit 103 by the pressurized fluid supply pump 145. When the pressurized fluid is supplied to the pressurized filtration plate, the pressurized filtration plate is expanded by the pressure of the pressurized fluid to pressurize the secondary pressurized cake contained in the filter cloth.
2차 가압이 완료되고 난 후, 압착식여과판내에 공급된 압착유체의 배출이 완료되면, 여과포 내에 형성된 케이크는 여과포로부터 이탈되어 여과부(103)의 하부에 위치한 케이크이송장치(127)에 의해 케이크저장부(125)에 저장된다.After the completion of the secondary pressurization, when the discharge of the pressurized fluid supplied in the compression type filtration plate is completed, the cake formed in the filter cloth is separated from the filter cloth and the cake by the cake transfer device 127 located under the filter unit 103 It is stored in the storage unit 125.
그런데, 이러한 종래의 필터프레스와 그 탈수방법에 있어서는, 슬러리공급펌프의 가압에 의한 1차 가압여과공정과, 압착유체에 의한 2차 가압여과공정을 거치면서도 케이크 내에 포함되어 있는 한계함수율 이하로 함수율을 저하시킬 수 없을 뿐만 아니라 염료산업과 같이 추출된 케이크를 재활용하는 분야에서는 케이크를 재활용하기 위해서 케이크의 함수율을 낮추는 별도의 건조공정을 거쳐야 하기 때문에 별도의 건조설비를 마련하여야 하는 문제점이 있다.However, in such a conventional filter press and its dewatering method, the water content is less than the limit moisture content contained in the cake through the first pressure filtration step by the pressurization of the slurry supply pump and the second pressure filtration step by the pressurized fluid. In addition, the field of recycling the extracted cake, such as the dye industry, can not be lowered, and there is a problem that a separate drying facility must be provided because a separate drying process for lowering the moisture content of the cake is required to recycle the cake.
따라서, 본 발명의 목적은, 압착유체를 통해 여과포내의 케이크를 2차 가압여과함과 동시에 열전달에 의해 케이크내의 수분을 증발시켜 케이크의 함수율을 저하시킬 수 있는 필터프레스와 그 탈수방법을 제공하는 것이다.Accordingly, it is an object of the present invention to provide a filter press and a method for dehydrating the cake in the filter cloth through the pressurized fluid which can reduce the moisture content of the cake by evaporating the moisture in the cake by heat transfer. .
도 1은 일반적인 필터프레스의 공정을 개략적으로 도시한 공정도,1 is a process diagram schematically showing a process of a general filter press,
도 2는 본 발명에 따른 필터프레스의 설비도,2 is a facility diagram of the filter press according to the present invention,
도 3은 본 발명에 따른 필터프레스의 개략적인 구성도,3 is a schematic configuration diagram of a filter press according to the present invention;
도 4는 종래의 필터프레스를 개략적으로 도시한 설비도이다.Figure 4 is a schematic diagram showing a conventional filter press.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
1 : 슬러리공급부 3 : 여과부1 slurry supply part 3 filter part
5 : 압착유체공급부 7 : 압축공기공급부5: pressurized fluid supply part 7: compressed air supply part
9 : 슬러리저장부 11 : 슬러리공급펌프9: slurry storage unit 11: slurry supply pump
15 : 슬러리공급밸브 17 : 여과틀15: slurry supply valve 17: filter frame
19 : 압착식여과판 21 : 여과포19: compression filter 21: filter cloth
23 : 케이크 25 : 케이크저장부23: cake 25: cake storage
27 : 케이크이송장치 29 : 여과액저장부27: cake transfer device 29: filtrate storage unit
33 : 여과액유동밸브 35 : 압축기33: filtrate flow valve 35: compressor
37 : 압축공기저장부 41 : 압축공기공급밸브37: compressed air storage unit 41: compressed air supply valve
43 : 압착유체저장부 45 : 압착유체공급펌프43: pressurized fluid storage 45: pressurized fluid supply pump
49 : 압착유체공급밸브 51 : 온도조절부49: pressurized fluid supply valve 51: temperature control unit
53 : 부압장치 57 : 부압관용밸브53: negative pressure device 57: negative pressure valve
59 : 압착유체복귀관 61 : 압착유체복귀밸브59: pressurized fluid return pipe 61: pressurized fluid return valve
상기 목적은, 본 발명에 따라, 여과틀과, 케이크를 압착하기 위한 압착식여과판과, 상기 여과틀과 상기 압착식여과판 사이에 개재되며 케이크를 수용하는 여과포와, 상기 여과포사이에 슬러리를 공급하는 슬러리공급펌프를 갖는 필터프레스에 있어서, 상기 압착식여과판내에 공급되어 상기 여과포내의 케이크를 가압할 압착유체를 가열하는 가열수단과; 상기 가열된 압착유체를 상기 압착식여과판내에 공급하는 유체공급펌프를 포함하는 것을 특징으로 하는 필터프레스에 의해 달성된다.The object of the present invention is to supply a slurry between the filter frame, the compression filter plate for compressing the cake, the filter cloth interposed between the filter frame and the compression filter plate to accommodate the cake, and the filter cloth. A filter press having a slurry supply pump, comprising: heating means for heating a pressurized fluid which is supplied into the pressurized filtration plate to pressurize a cake in the filter cloth; And a fluid supply pump for supplying the heated compressed fluid into the compressed filter plate.
여기서, 상기 여과포내 케이크의 수분증발을 원활하게 할 수 있도록 상기 여과틀의 내부를 부압시키는 부압장치와, 상기 여과포내에 압축공기를 공급하는 압축공기공급부를 더 포함하는 것이 보다 효과적일 수 있다.Here, it may be more effective to further include a negative pressure device to pressurize the inside of the filter frame to facilitate the water vaporization of the cake in the filter cloth, and a compressed air supply unit for supplying compressed air into the filter cloth.
또한, 상기 압착유체는 온수인 것이 바람직하다.In addition, the pressurized fluid is preferably hot water.
한편, 본 발명의 다른 분야에 따르면, 여과틀과, 케이크를 압착하기 위한 압착식여과판과, 상기 여과틀과 상기 압착식여과판 사이에 개재되며 케이크를 수용하는 여과포와, 상기 여과포사이에 슬러리를 공급하는 슬러리공급펌프를 갖는 필터프레스의 탈수방법에 있어서, 압착유체를 가열하는 단계와; 상기 압착식여과판내에 상기 가열된 압착유체를 공급하는 단계를 포함하는 것을 특징으로 하는 필터프레스의 탈수방법에 의해 달성된다.On the other hand, according to another field of the present invention, the filter frame, the compression filter plate for compressing the cake, the filter cloth interposed between the filter frame and the compression filter plate to accommodate the cake, and supplies the slurry between the filter cloth A dewatering method of a filter press having a slurry supply pump, the method comprising: heating a pressurized fluid; It is achieved by a dewatering method of the filter press comprising the step of supplying the heated pressurized fluid into the compression filtration plate.
여기서, 상기 압착유체에 의해 상기 여과포내 케이크의 수분증발을 원활하게 할 수 있도록 상기 여과포내부를 부압시키는 단계와, 상기 압착유체에 의해 상기 여과포내 케이크에서 증발된 수분을 토출할 수 있도록 상기 여과포내에 상기 압축공기를 공급하는 단계를 더 포함하는 것이 효과적일 수 있다.Here, the step of negative pressure inside the filter cloth to facilitate the water evaporation of the cake in the filter cloth by the compression fluid, and in the filter cloth to discharge the water evaporated from the cake in the filter cloth by the compression fluid It may be effective to further comprise the step of supplying the compressed air.
이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1은 일반적인 필터프레스의 공정을 개략적으로 도시한 공정도이며, 도 2는 본 발명에 따른 필터프레스를 개략적으로 도시한 설비도이고, 도 3은 본 발명에 따른 필터프레스의 개략적인 구성도이다. 이들 도면에 도시된 바와 같이, 본 발명에 따른 필터프레스는 전술한 종래의 필터프레스와 마찬가지로, 슬러리원액을 공급하는 슬러리공급부(1)와, 공급된 슬러리원액을 여과하는 여과부(3)와, 여과부(3)에 압착유체를 공급하는 압착유체공급부(5)와, 여과부(3)에 압축공기를 공급하는 압축공기공급부(7)를 가진다.1 is a process diagram schematically showing a process of a general filter press, Figure 2 is a schematic diagram showing a filter press according to the present invention, Figure 3 is a schematic configuration diagram of a filter press according to the present invention. As shown in these figures, the filter press according to the present invention, like the conventional filter press described above, the slurry supply unit 1 for supplying the slurry stock solution, the filtration unit 3 for filtering the supplied slurry stock solution, It has a pressurized fluid supply part 5 which supplies a pressurized fluid to the filtration part 3, and the compressed air supply part 7 which supplies compressed air to the filtration part 3. As shown in FIG.
슬러리공급부(1)는 슬러리원액을 저장하는 슬러리저장부(9)와, 슬러리저장부(9)로부터 슬러리원액을 여과부(3)에 가압공급하는 슬러리공급펌프(11)를 가진다. 슬러리공급펌프(11)와 여과부(3)사이에 설치된 슬러리공급관(13)에는 개폐 가능한 슬러리공급밸브(15)가 설치되어 있다.The slurry supply section 1 has a slurry storage section 9 for storing the slurry stock solution and a slurry supply pump 11 for pressurizing and supplying the slurry stock solution to the filtration section 3 from the slurry storage section 9. In the slurry supply pipe 13 provided between the slurry supply pump 11 and the filtration unit 3, a slurry supply valve 15 that can be opened and closed is provided.
여과부(3)는 다수의 여과틀(17)과, 여과틀(17) 사이에 개재된 압착식여과판(19)을 가지며, 여과틀(17)과 압착식여과판(19) 사이에는 한 쌍의 여과포(21)가 개재되어 있다. 또한, 여과부(3)에서 여과되어 여과액과 분리된 케이크(23)를 케이크저장부(25)에 이송하기 위해서 여과부(3)의 하부에는 케이크이송장치(27)가 설치되어 있다.The filtration unit 3 has a plurality of filter frames 17 and a compression filter plate 19 interposed between the filter frames 17, and a pair of filters between the filter frame 17 and the compression filter plate 19. The filter cloth 21 is interposed. In addition, a cake conveying device 27 is provided in the lower part of the filtration unit 3 in order to transfer the cake 23 filtered by the filtration unit 3 and separated from the filtrate to the cake storage unit 25.
여과부(3)내에서 슬러리가 가압여과됨에 따라 추출되는 여과액을 수용하기 위해서 여과부(3)와 여과액저장부(29) 사이에는 여과액유동관(31)이 연결되어 있으며, 여과액유동관(31)에는 개폐 가능한 여과액유동밸브(33)가 설치되어 있다.A filtrate flow tube 31 is connected between the filtrate 3 and the filtrate storage unit 29 to accommodate the filtrate extracted as the slurry is filtered under pressure in the filtrate 3, and the filtrate flow tube 31 is provided with a filtrate flow valve 33 that can be opened and closed.
압축공기공급부(7)는 압축기(35)와, 압축기(35)로부터 발생된 압축공기를 일시 저장하는 압축공기저장부(37)를 가지며, 압축공기저장부(37)와 여과부(3)사이에는 압축공기공급관(39)이 설치되어 있다. 또한, 압축공기공급관(39)에는 개폐 가능한 압축공기공급밸브(41)가 설치되어 있다.The compressed air supply unit 7 has a compressor 35 and a compressed air storage unit 37 for temporarily storing the compressed air generated from the compressor 35 and between the compressed air storage unit 37 and the filtration unit 3. The compressed air supply pipe 39 is installed. In addition, the compressed air supply pipe 39 is provided with a compressed air supply valve 41 that can be opened and closed.
한편, 여과부(3)의 압착식여과판(19)내에 압착유체를 공급하는 압착유체공급부(5)는 압착유체저장부(43)와, 압착유체를 압착식여과판(19)에 공급하는 압착유체공급펌프(45)를 가지며, 압착유체가 유동하는 압착유체공급관(47)에는 개폐 가능한 압착유체공급밸브(49)가 설치되어 있다. 또한, 압착유체저장부(43)의 일측에는 저장된 압착유체를 가열하여 압착유체의 온도를 조절할 수 있도록 온도조절부(51)가 설치되어 있다.On the other hand, the pressurized fluid supply part 5 for supplying the pressurized fluid into the pressurized filtration plate 19 of the filtration part 3 has a pressurized fluid storage part 43 and a pressurized fluid for supplying the pressurized fluid to the pressurized filtration plate 19. A pressurized fluid supply valve 49 having a supply pump 45 and a pressurized fluid flowing therein is opened and closed. In addition, one side of the pressurized fluid storage unit 43 is provided with a temperature control unit 51 to heat the stored pressurized fluid to adjust the temperature of the pressurized fluid.
온도조절부(51)에 의해 가열된 압착유체에 의해 여과포(21)에 수용된 케이크(23)의 수분증발작용이 원활하게 이루어질 수 있도록 여과부(3)내를 부압시키는 부압장치(53)가 설치되어 있으며, 부압장치(53)와 여과부(3) 사이에는 부압관(55)과, 개폐 가능한 부압관용밸브(57)가 설치되어 있다.A negative pressure device 53 is installed to pressurize the inside of the filter part 3 so that the water evaporation action of the cake 23 accommodated in the filter cloth 21 can be smoothly performed by the pressurized fluid heated by the temperature control part 51. A negative pressure tube 55 and a negative pressure valve 57 for opening and closing are provided between the negative pressure device 53 and the filtration part 3.
또한, 여과부(3)와 압착유체저장부(43) 사이에는 압착식여과판(19)에 공급된 압착유체가 복귀될 수 있도록 압착유체복귀관(59)이 설치되어 있으며, 압착유체복귀관(59)에는 개폐 가능한 압착유체복귀밸브(61)가 설치되어 있다.In addition, between the filtration unit 3 and the pressurized fluid storage unit 43, a pressurized fluid return tube 59 is installed so that the pressurized fluid supplied to the press-type filtration plate 19 can be returned. 59 is provided with a pressurized fluid return valve 61 which can be opened and closed.
이상과 같은 구성에 의하여, 슬러리저장부(9)로부터 슬러리원액을 슬러리공급펌프(11)를 통해 여과부(3)로 가압공급함에 따라 여과포(21)내에 공급된 슬러리원액은 펌핑압력에 의해 여과포(21) 사이에서 가압여과된다. 여과된 여과액은 여과액유동관(31)을 통해 유동하여 여과액유동밸브(33)를 지나 여과액저장부(29)에 수용된다.According to the above configuration, as the slurry stock solution is pressurized and supplied from the slurry storage section 9 to the filtration section 3 through the slurry supply pump 11, the slurry stock solution supplied in the filter cloth 21 is filtered by the pumping pressure. Press-filtered between (21). The filtered filtrate flows through the filtrate flow pipe (31) and is received in the filtrate storage unit (29) through the filtrate flow valve (33).
이렇게, 1차 가압여과가 완료되면 슬러리공급밸브(15)가 폐쇄되며, 압축공기공급밸브(41)가 개방되어 압축기(35)로부터 압축되어 압축공기저장부(37)에 수용되어 있는 압축공기가 여과부(3)에 공급되어 여과포(21)내에 수용되어 있는 1차 가압여과된 케이크(23) 주위의 수분을 강제 토출시킨다.As such, when the primary pressure filtration is completed, the slurry supply valve 15 is closed, and the compressed air supply valve 41 is opened to be compressed from the compressor 35 to be compressed air stored in the compressed air storage 37. The water around the primary pressure filtered cake 23, which is supplied to the filtration part 3 and accommodated in the filter cloth 21, is forcibly discharged.
압축공기에 의해 1차 가압여과된 케이크(23) 주위의 수분토출이 완료되면, 압축공기공급밸브(41)는 폐쇄되며, 압착유체공급밸브(49)가 개방되어 압착식여과판(19)내로 압착유체가 공급된다. 압착식여과판(19)에 공급되는 압착유체는 온도조절부(51)에 의해 70 ~ 80℃로 유지되어 압착식여과판(19)에 공급되며, 공급된 압착유체에 의해 압착식여과판(19)이 팽창하여 여과포(21)내에 수용된 케이크(23)가 2차 가압여과된다. 2차 압축에 의해 추출된 여과액은 여과액유동관(31)을 통해 여과액저장부(29)에 수용되며, 소정 시간이 경과 후 여과액유동관(31)에 설치된 여과액유동밸브(33)는 폐쇄된다.When the water discharge around the primary pressure filtered cake 23 by the compressed air is completed, the compressed air supply valve 41 is closed, and the pressurized fluid supply valve 49 is opened to compress the compressed filter plate 19. Fluid is supplied. The pressurized fluid supplied to the crimping filtration plate 19 is maintained at 70 to 80 ° C. by the temperature control unit 51 and is supplied to the crimping filtration plate 19, and the crimping filtration plate 19 is supplied by the supplied crimping fluid. The cake 23, which is expanded and accommodated in the filter cloth 21, is subjected to secondary pressure filtration. The filtrate extracted by the secondary compression is accommodated in the filtrate storage unit 29 through the filtrate fluid flow pipe 31, and after a predetermined time elapses, the filtrate flow valve 33 installed in the filtrate fluid flow pipe 31 is It is closed.
여과액유동밸브(33)가 폐쇄되면, 부압관용밸브(57)가 개방되며, 부압장치(53)에 의해 여과포(21)내의 압력이 300 ~ 400mmHg로 유지되어 압착유체의 온도에 의해 케이크(23)의 수분증발이 원활하게 된다.When the filtrate flow valve 33 is closed, the negative pressure pipe valve 57 is opened, and the pressure in the filter cloth 21 is maintained at 300 to 400 mmHg by the negative pressure device 53, so that the cake 23 is reduced by the temperature of the pressurized fluid. Evaporation of water becomes smooth.
한편, 2차 가압이 완료되었을 때, 여과액유동밸브(33)를 폐쇄하고, 압축공기공급밸브(41)를 개방하면 압축공기공급부(7)의 압축공기가 여과포(21) 사이를 통과하면서 압착유체에 의해 증발되는 케이크(23)의 수분을 강제 토출시킨다. 이에 따라, 여과포(21)내에 수용된 케이크(23)의 수분함수율을 저하시킬 수 있다.On the other hand, when the secondary pressurization is completed, when the filtrate flow valve 33 is closed and the compressed air supply valve 41 is opened, the compressed air of the compressed air supply part 7 passes through the filter cloth 21 and is compressed. The moisture of the cake 23 vaporized by the fluid is forcibly discharged. Thereby, the water content rate of the cake 23 accommodated in the filter cloth 21 can be reduced.
소정의 시간이 경과하여, 2차 가압 및 증발작용에 의해 여과포(21)내에 수용된 케이크(23)의 수분함수율이 저하되면 부압장치(53)와 압착유체공급펌프(45)가 정지하며, 압착식여과판(19)내에 공급된 압착유체의 배출이 완료되면, 여과포(21)로부터 케이크(23)가 이탈되어 여과부(3)의 하부에 위치한 케이크이송장치(27)에 의해 케이크(23)는 케이크저장부(25)로 이송된다.After a predetermined time elapses, when the moisture content of the cake 23 contained in the filter cloth 21 decreases due to the secondary pressurization and evaporation, the negative pressure device 53 and the pressurized fluid supply pump 45 stop, When the discharge of the pressurized fluid supplied into the filter plate 19 is completed, the cake 23 is separated from the filter cloth 21 and the cake 23 is caked by the cake conveying device 27 located at the lower part of the filter part 3. It is transferred to the storage 25.
이와 같이, 슬러리공급펌프(11)에 의해 1차 가압여과되어 여과포(21)내에 수용된 케이크(23)를 압착식여과판(19)내에 공급된 압착유체에 의해 2차 가압함과 동시에 압착유체와의 열전달을 통해 케이크(23)의 수분을 증발시킴에 따라 케이크(23)의 수분함수율을 저하시킬 수 있다.As described above, the cake 23, which is primary pressure filtered by the slurry supply pump 11 and accommodated in the filter cloth 21, is pressurized secondly by the pressurized fluid supplied in the press-type filtration plate 19, and simultaneously with the pressurized fluid. As the moisture of the cake 23 is evaporated through heat transfer, the moisture content of the cake 23 may be lowered.
이상에서 설명한 바와 같이, 본 발명에 따르면, 압착유체를 통해 여과포내의 케이크를 2차 가압여과함과 동시에 열전달에 의해 케이크내의 수분을 증발시켜 케이크의 함수율을 저하시킬 수 있는 필터프레스와 그 탈수방법이 제공된다.As described above, according to the present invention, a filter press and a dewatering method capable of lowering the moisture content of the cake by evaporating the moisture in the cake by heat transfer while simultaneously pressurizing the cake in the filter cloth through the pressurized fluid. Is provided.
Claims (7)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220184534A1 (en) * | 2020-12-16 | 2022-06-16 | Lifeng Li | Pressure filter dewatering system and dewatering method |
| KR20230140281A (en) | 2022-03-29 | 2023-10-06 | (주)지엔테크 | Mobile sludge dewatering process equipment |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030013670A (en) * | 2001-08-08 | 2003-02-15 | 안광수 | filter press and filter press method |
| KR100455057B1 (en) * | 2001-11-15 | 2004-11-15 | 경윤현 | Filter plate and vacuum drying apparatus using the plate |
| KR100483468B1 (en) * | 2002-05-15 | 2005-04-18 | 섬진이에스티 주식회사 | Hot Filter Press System |
| KR100857593B1 (en) * | 2007-06-29 | 2008-09-09 | 나은수 | Filter plate of heating and pressurizing and filter press equipped with the plate |
| KR100950800B1 (en) * | 2007-11-20 | 2010-04-02 | 코리아워터텍 주식회사 | Apparatus for drying sludge and, methods for sludge processing |
| KR101308170B1 (en) * | 2013-07-26 | 2013-09-12 | 한준희 | Filter press with sludge treatment system |
| CN208711143U (en) * | 2017-06-03 | 2019-04-09 | 中国计量大学 | A kind of sewage sludge electromagnetic force filter-press dehydration device |
| KR102517572B1 (en) * | 2020-10-29 | 2023-04-04 | 에스이에스티 주식회사 | Pressure variable type Filterpress Sludge Vacuum Heating Dehydrate Drying System |
-
1998
- 1998-10-30 KR KR1019980046475A patent/KR100280122B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220184534A1 (en) * | 2020-12-16 | 2022-06-16 | Lifeng Li | Pressure filter dewatering system and dewatering method |
| KR20230140281A (en) | 2022-03-29 | 2023-10-06 | (주)지엔테크 | Mobile sludge dewatering process equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000028298A (en) | 2000-05-25 |
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