CN1219440A - Belt filter - Google Patents

Belt filter Download PDF

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Publication number
CN1219440A
CN1219440A CN98123621A CN98123621A CN1219440A CN 1219440 A CN1219440 A CN 1219440A CN 98123621 A CN98123621 A CN 98123621A CN 98123621 A CN98123621 A CN 98123621A CN 1219440 A CN1219440 A CN 1219440A
Authority
CN
China
Prior art keywords
gypsum
belt filter
baffle plate
filter
belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN98123621A
Other languages
Chinese (zh)
Other versions
CN1073872C (en
Inventor
北村治男
越智英次
筱田岳男
冲野进
日野正夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Power Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of CN1219440A publication Critical patent/CN1219440A/en
Application granted granted Critical
Publication of CN1073872C publication Critical patent/CN1073872C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • 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
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Treating Waste Gases (AREA)
  • Treatment Of Sludge (AREA)

Abstract

In a belt filter which sucks gypsum slurry from an exhaust gas desulfurizer and dehydrates it, the lower ends of which extend to the upper layer of a gypsum cake, are provided in the lengthwise direction of the belt filter to disturb a particulate layer formed on the surface of the gypsum cake.

Description

The belt filter
The present invention relates to be used on flue gas desulphurization unit belt filter to the gypsum slurry dewatering.
Because based on the consideration of aspect costs such as equipment, operation, maintenance, dewatering, the gypsum material paste dehydrating device that uses on flue gas desulphurization unit has changed the basket vacuum suction dehydration-type that adopts the belt filter into from centrifugal separating type.
Yet, as shown in Figure 2, the particle dust that constitutes by the impurity such as for example unburned carbon, calcirm-fluoride, silica, aluminium hydroxide and iron hydroxide that are included in the slip, on dewatered cake 201, form thickness about one and arrived several millimeters stratum granulosum 202, therefore damage the permeability in the vacuum suction process, thereby reduced dewatering.
The present invention finishes under the above-mentioned situation of consideration, even its objective is that providing a kind of is forming the belt filter that still can keep dewatering under the stratum granulosum situation on the gypsum filter cake.
In order to reach above-mentioned target, according to the present invention, a kind of belt filter is provided, this belt filter comprises that one is used for sucking the gypsum slip and with the vacuum dewatering plant of its dehydration from flue gas desulphurization unit, and the baffle plate on one group of length direction that is arranged on the belt filter, the upper strata of gypsum filter cake is stretched in its lower end, is used for disturbing forming stratum granulosum on said gypsum filter cake.
In a preferred embodiment, can provide a rinse water supply device, be used for providing hot water, steam or both to provide to gypsum slip or gypsum filter cake.
Preferably, said baffle plate can be selected a kind of making from rubber, plastics, bamboo, wood and metal.
Preferably, said baffle plate can have rectangular shape, and can be preferably suspended from the bracing or strutting arrangement of crossing over belt filter width.
Preferably, said belt filter can be equipped a rinse water supply device and is used for providing rinse water on said gypsum filter cake.
Preferably, said rinse water can have the temperature identical or higher with the gypsum slip.More preferably, said rinse water can have the temperature higher 10 ℃ than gypsum slip.
Said baffle plate can be arranged to movable.In this case, preferably make said baffle plate have the function of detection dehydration location to change its position automatically by the used thickness sensor.
Therefore, according to the present invention, even be appreciated that can provide a kind of is forming the belt filter that still can keep dewatering under the stratum granulosum situation on the gypsum filter cake.
In addition, in the embodiment of a use baffle plate, the water that said baffle plate intercepting is floated in the position that stratum granulosum has formed, and disturb said stratum granulosum simultaneously, thereby can take water away by vacsorb, therefore can prevent that water is discharged on the filter cake surface.
In addition, because be provided with a lot of baffle plates, its interference effect is bigger, so even the change of properties of gypsum slip and formed the change in location of stratum granulosum, the sure interference stratum granulosum of certain in the said baffle plate, thus can guarantee dewatering.
Fig. 1 is a sectional view of describing an embodiment of belt filter of the present invention;
Fig. 2 is the sectional view that is described in the stratum granulosum that forms on the gypsum filter cake;
Fig. 3 is the stereogram that is used to describe belt filter cross section structure of the present invention.
Following reference is shown in an embodiment of accompanying drawing and describes belt filter of the present invention.
As shown in Figure 1, the belt filter of this embodiment has an initial vacuum casing 4 and the final vacuum casing 5 as the vacuum dewatering plant component parts, and gypsum slip 2 offers said belt filter from feed head 3.At vacuum chamber 4 and 5 upper surfaces, be provided with 6 circulations of a Rubber Conveyor Belt Scrap and be in contact with it.This Rubber Conveyor Belt Scrap 6 has supported a circulation belt filter (filter cloth) strainer 7.As Fig. 3, on said Rubber Conveyor Belt Scrap 6 surfaces, meet at right angles and be provided with groove 21, and the through hole 22 that penetrates Rubber Conveyor Belt Scrap 6 is arranged on the said groove 21 with the direction of motion, vacuum chamber 4 and 5 carries out vacuum filtration by said through hole 22.Said belt filter strainer 7 has gas permeability, and has the proper intensity that is used to carry gypsum slip 2 and gypsum filter cake 8 in addition.
And, for this embodiment provides rinse water supply device 9.This device is used for washing off the salt such as the chlorion of the high concentration that is included in gypsum slip 2, so that obtain the gypsum of high-quality (high-purity).
In addition, the belt filter 1 of this embodiment has baffle plate 10.This baffle plate 10 is used to disturb the stratum granulosum that forms on gypsum filter cake 8 surfaces.3 positions on the length direction of belt filter 1 are provided with baffle plate 10, and the upper strata of gypsum filter cake 8 is stretched in its lower end." upper strata of gypsum filter cake 8 is stretched in its lower end " one is meant that said baffle plate 10 has sufficient length in vertical direction, takes this to make said lower end can disturb the stratum granulosum of gypsum filter cake 8, thereby guarantees dewatering.
Said baffle plate 10 can be made by materials such as rubber, plastics, bamboo, wood and metals, but preferred rubber or the synthetic rubber of using.Baffle plate 10 with rectangular shape, suspended from the bracing or strutting arrangement of crossing over said belt filter 1 width.
In being shown in the embodiment as above-mentioned structure of Fig. 1, the gypsum slip supplies on the belt filter strainer 7 from feed head 3, and is subjected to the vacsorb filtration of initial vacuum casing 4.Filter the gypsum filter cake 8 on belt filter strainer 7 that obtains by vacsorb, deliver to final vacuum casing 5 by Rubber Conveyor Belt Scrap 6.At this moment, cleaning liquid flows out from rinse water supply device 9 and is provided on the gypsum filter cake 8.After rinse water was filtered out by final vacuum casing 5 vacsorbs, the water in the gypsum filter cake 8 excluded by vacsorb effect at the fixed time.By the motion of Rubber Conveyor Belt Scrap 6, the gypsum filter cake 8 of dehydration is delivered to a recovery conveyer 11, separates from belt filter strainer 7, and reclaims by reclaiming conveyer 11.Belt filter strainer 7 adopts a belt filter cleaning device 12 to clean, and then delivers to the slip drainage area, and wherein gypsum filter cake 8 is separated from said belt filter strainer 7.
Flow out the rinse water that is provided on the gypsum filter cake 8 from rinse water supply device 9 and have the temperature identical or higher, preferably have 10 ℃ of the slurry temperatures of being higher than with the gypsum slip.This is because the temperature of gap water in the gypsum filter cake 8 can take this to improve, and the viscosity and the surface tension of said gap water have all descended, thereby intergranular migration resistance descended, thereby has improved permeability.
Simultaneously, the lower end of baffle plate 10 is extended and is led to the upper strata of gypsum filter cake 8, has disturbed the upper strata of the gypsum filter cake 8 that comprises established stratum granulosum.Therefore, kept the permeability of gypsum filter cake 8, can carry out dehydration effectively thereby make.In addition, baffle plate 10 has the effect that keeps moisture to ooze out, more particularly, in the position that forms stratum granulosum, baffle plate 10 has intercepted the water that is exuded to superficial layer, and has disturbed said stratum granulosum simultaneously, thereby water can siphon away by vacsorb, therefore, avoided in belt filter water outlet one side, on the surface of gypsum filter cake 8, formed water layer.
In the present embodiment, owing to be provided with many baffle plates 10, said interference effect is big, even and the character of gypsum slip 2 changes, and the position (dehydration location) that forms stratum granulosum changes, in the said baffle plate 10 certain necessarily can be disturbed stratum granulosum, thereby can guarantee dewatering.
Clearly, for the those skilled in the art of this area, the present invention can much be out of shape or improve, and do not deviate from the spirit and scope of the present invention.Therefore, above-mentioned embodiment is indicative, and can think that all these distortion and improvement all fall within the scope of the present invention, as defining in being attached to following claim.
Though initial vacuum casing and final vacuum casing are provided in the above-described embodiment, can have saved the initial vacuum casing, and have only natural subsidence to work in this part.
In embodiment as shown in Figure 1,3 baffle plates 10 are provided.Yet,, can a plurality of baffle plates be set in the position that stratum granulosum forms in order to reach purpose of the present invention.In addition, compare, can improve the number of baffle plate with embodiment as shown in Figure 1.And the position that baffle plate is set can change according to the position that stratum granulosum forms.
Say that strictly baffle plate 10 is arranged on the positive anterior locations (just before forming stratum granulosum) of dewatering, and it acts on maximum.Therefore, the baffle system for fixing will be provided with a lot of baffle plates.Shown in the embodiment among Fig. 1, this is because said dehydration location will change along with the composition of gypsum.In addition, baffle plate can be movably, rather than fixedly installing shown in the embodiment among Fig. 1.At this moment, by the used thickness sensor, given the function of baffle plate perception dehydration location, thereby can change its position automatically.
Need not superfluous words, even baffle plate 10 is arranged on after the position that stratum granulosum 202 formed, and also may expect to have said effect, and still, this is necessary to make the material of said baffle plate 10 harder.This may bring some problems, and gypsum can stick on the baffle plate 10, and said baffle plate 10 impacts filter cloth (filter strainer) and it is broken.
Rinse water from rinse water supply device can be substituted by steam.In fact, its purpose only provides higher temperature, so that reduce the viscosity and the surface tension of gap water.Hot water and steam can use.
In the above-described embodiment, the baffle plate of being made by rubber etc. 10 is used to disturb the gypsum slip.Yet in the present invention, the means of the said stratum granulosum of any interference can be used, and for example use metal guide rail (rack).In addition, can use several different methods simultaneously.
Quote in full at proposition on November 4th, 1997 Japanese Patent Application Publication NO.9-301879 at this, comprise its specification, claims, accompanying drawing and summary.

Claims (11)

1. a belt filter comprises vacuum dewatering plant and a plurality of baffle plate, and said vacuum dewatering plant will be from the gypsum slip suction of flue gas desulphurization unit and with its dehydration; And said baffle plate is arranged on the belt filter length direction, and the upper strata of gypsum filter cake is stretched in its lower end, is used to disturb the stratum granulosum that forms on the gypsum filter cake surface.
2. according to the belt filter of claim 1, wherein, be provided with rinse water supply device and be used for providing hot water, steam or both to have to gypsum slip or gypsum filter cake.
3. according to the belt filter of claim 1, wherein, said baffle plate is selected one by following material and is made: rubber, plastics, bamboo, wood and metal.
4. according to the belt filter of claim 1, wherein, have the said baffle plate of rectangular shape, suspended from the bracing or strutting arrangement of crossing over belt filter width.
5. according to the belt filter of claim 1, wherein, said belt filter has been equipped rinse water supply device and has been used for providing rinse water on said gypsum filter cake.
6. according to the belt filter of claim 5, wherein, said rinse water has the temperature identical with the gypsum slip.
7. according to the belt filter of claim 5, wherein, said rinse water has the temperature higher than gypsum slip.
8. according to the belt filter of claim 5, wherein, said rinse water has the temperature higher 10 ℃ than gypsum slip.
9. according to the belt filter of claim 1, wherein, said baffle plate is movably.
10. according to the belt filter of claim 9, wherein, by the used thickness sensor, given the function of said baffle plate perception dehydration location, thereby can change its position automatically.
11. according to each belt filter of claim 1 to 10, wherein, meeting at right angles with the direction of motion on the conveyer belt surface is provided with groove and is used to transmit the gypsum slip, and the through hole that penetrates said conveyer belt is arranged on this groove.
CN98123621A 1997-11-04 1998-10-29 belt filter Expired - Lifetime CN1073872C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP301879/97 1997-11-04
JP30187997A JP3600417B2 (en) 1997-11-04 1997-11-04 Belt filter
JP301879/1997 1997-11-04

Publications (2)

Publication Number Publication Date
CN1219440A true CN1219440A (en) 1999-06-16
CN1073872C CN1073872C (en) 2001-10-31

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ID=17902250

Family Applications (1)

Application Number Title Priority Date Filing Date
CN98123621A Expired - Lifetime CN1073872C (en) 1997-11-04 1998-10-29 belt filter

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Country Link
JP (1) JP3600417B2 (en)
KR (1) KR100276126B1 (en)
CN (1) CN1073872C (en)
CZ (1) CZ291668B6 (en)
TR (1) TR199802224A3 (en)
TW (1) TW402518B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101954211A (en) * 2010-10-19 2011-01-26 无锡华能表面处理有限公司 Automatic belt filter
CN102240473A (en) * 2010-05-10 2011-11-16 佛山科创玮景环保技术有限公司 Garbage separator
CN102274651A (en) * 2011-08-09 2011-12-14 浙江大学 Crawler-type vacuum filtering device suitable for filtering solid nitro compounds
CN102614700A (en) * 2012-02-28 2012-08-01 黄文龙 Sewage diversion trench suction filter system
CN103920332A (en) * 2013-11-27 2014-07-16 大连隆星新材料有限公司 Wax water automatic separation system
CN105536333A (en) * 2016-01-01 2016-05-04 曲晓东 Filter with circulation filtering layer
CN108358232A (en) * 2017-12-27 2018-08-03 北京清新环境技术股份有限公司 High chlorine desulfurated plaster washing methods
CN109603553A (en) * 2018-12-13 2019-04-12 北京国电龙源环保工程有限公司 A kind of ultra-fine grain removing segmented dehydration separation system
WO2021208394A1 (en) * 2020-04-13 2021-10-21 西安热工研究院有限公司 Slurry purifying and water collecting system and method based on filter cloth dehydrator
CN113561554A (en) * 2020-04-28 2021-10-29 青岛金玖能源科技有限公司 Wet pressing plate host
CN116407893A (en) * 2023-02-10 2023-07-11 江苏绿利新材料科技有限公司 Mortar mixed remainder recycling device and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006110426A (en) * 2004-10-13 2006-04-27 Ishikawajima Harima Heavy Ind Co Ltd Gypsum dewatering apparatus
JP5314620B2 (en) 2010-02-26 2013-10-16 三菱重工業株式会社 Gypsum dewatering equipment for desulfurization equipment
KR101285843B1 (en) * 2011-09-15 2013-07-12 한전산업개발 주식회사 high temperature cleaning apparatus for gypsum

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE402717B (en) * 1976-11-26 1978-07-17 Nordengren Patenter PROCEDURE FOR WASHING OUT FILTER CAKES AND SPREADER NOZZLE FOR PERFORMING THE PROCEDURE

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102240473A (en) * 2010-05-10 2011-11-16 佛山科创玮景环保技术有限公司 Garbage separator
CN101954211A (en) * 2010-10-19 2011-01-26 无锡华能表面处理有限公司 Automatic belt filter
CN102274651A (en) * 2011-08-09 2011-12-14 浙江大学 Crawler-type vacuum filtering device suitable for filtering solid nitro compounds
CN102614700B (en) * 2012-02-28 2015-04-29 黄文龙 Sewage diversion trench suction filter system
CN102614700A (en) * 2012-02-28 2012-08-01 黄文龙 Sewage diversion trench suction filter system
CN103920332B (en) * 2013-11-27 2016-03-30 大连隆星新材料有限公司 Wax water automatic separation system
CN103920332A (en) * 2013-11-27 2014-07-16 大连隆星新材料有限公司 Wax water automatic separation system
CN105536333A (en) * 2016-01-01 2016-05-04 曲晓东 Filter with circulation filtering layer
CN108358232A (en) * 2017-12-27 2018-08-03 北京清新环境技术股份有限公司 High chlorine desulfurated plaster washing methods
CN109603553A (en) * 2018-12-13 2019-04-12 北京国电龙源环保工程有限公司 A kind of ultra-fine grain removing segmented dehydration separation system
WO2021208394A1 (en) * 2020-04-13 2021-10-21 西安热工研究院有限公司 Slurry purifying and water collecting system and method based on filter cloth dehydrator
CN113561554A (en) * 2020-04-28 2021-10-29 青岛金玖能源科技有限公司 Wet pressing plate host
CN116407893A (en) * 2023-02-10 2023-07-11 江苏绿利新材料科技有限公司 Mortar mixed remainder recycling device and method

Also Published As

Publication number Publication date
TW402518B (en) 2000-08-21
CN1073872C (en) 2001-10-31
JP3600417B2 (en) 2004-12-15
JPH11128670A (en) 1999-05-18
CZ291668B6 (en) 2003-04-16
CZ348498A3 (en) 1999-07-14
TR199802224A2 (en) 1999-10-21
KR100276126B1 (en) 2000-12-15
KR19990044832A (en) 1999-06-25
TR199802224A3 (en) 1999-10-21

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Owner name: MITSUBISHI HITACHI POWER SYSTEM LTD.

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Granted publication date: 20011031