CN102091453A - Plate-and-frame filter press used in citric acid production process and solid-liquid separating method thereof - Google Patents
Plate-and-frame filter press used in citric acid production process and solid-liquid separating method thereof Download PDFInfo
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- CN102091453A CN102091453A CN2010106117966A CN201010611796A CN102091453A CN 102091453 A CN102091453 A CN 102091453A CN 2010106117966 A CN2010106117966 A CN 2010106117966A CN 201010611796 A CN201010611796 A CN 201010611796A CN 102091453 A CN102091453 A CN 102091453A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention belongs to the technical field of solid-liquid separation, and in particular relates to a plate-and-frame filter press used in a citric acid production process and a solid-liquid separating method thereof in industries, such as food, chemical and the like. The technical scheme of the invention is as follows: the plate-and-frame filter press used in the citric acid production process comprises a movable end, a fixed end, a feeding pipe and a valve positioned on the feeding pipe, wherein the feeding pipe comprises a feeding pipe I and a feeding pipe II, the feeding pipe I is connected with the movable end, and the feeding pipe II is connected with the fixed end. The plate-and-frame filter press provided by the invention is used under the same pressure condition, the filtering time, the washing time and the squeezing time are shortened remarkably, and the use efficiency of the filter press is improved; a filter cake is washed with water more completely, and the recycling rate of a feed solution is high; the water content of the filter cake is low and uniform, and the subsequent comprehensive utilization energy consumption is low; the energy-saving effect is good; the process is simplified, and is easy to be operated; and the invention can be widely applied to the field of solid-liquid separation of other related industries.
Description
Technical field
The invention belongs to the solid-liquid separation technique field, relate in particular to the plate and frame filter press that is used for the Citric Acid Production process and the solid-liquid separating method thereof of industries such as can being widely used in food, chemical industry.
Background technology
In industries such as food, chemical industry, traditional solid-liquid separation method is to use plate and frame filter press, stiff end one endfeed, wash water from filter, the shortcoming that the method exists is: material is skewness between filter plate, and feed time is longer, and the squeezing time is longer, and through after the long period press filtration, the filter cake moulding is hard, greatly reduces the service efficiency of filter press, has improved production cost indirectly; Back 2/3rds filter cakes of terminal even whole the filter of charging can not be by abundant wash water, causes that filter cake moisture content is higher, fluctuation is bigger, and follow-up integrated treatment energy consumption is higher; The feed liquid remaining quantity is higher and inhomogeneous in the filter cake, has reduced the feed liquid rate of recovery, thereby has reduced the material yield.At the problem of above existence, equipment and the process of being badly in need of a kind of reasonable optimizing of searching are improved.
Summary of the invention
The objective of the invention is to, overcome the deficiencies in the prior art, a kind of plate and frame filter press and solid-liquid separating method that is used for the Citric Acid Production process is provided, it adopts the solid-liquid separating method of two endfeeds, press filtration, wash water.The stiff end of sheet frame filter is connected to charging aperture, and movable end is connected to the continuous charging aperture that is flexible coupling, and the middle filter plate place of filter utilizes blind plate or utilizes channel-less filter cloth to cut off, and material can be from the two ends throat-fed and the wash water of filter.The utilization rate of filter press is improved, can realize the filter cake between whole all filter plates of filter is carried out wash water, improve the feed liquid rate of recovery and reduce filter cake moisture content.
For solving the problems of the technologies described above, technical scheme of the present invention is: the plate and frame filter press that is used for the Citric Acid Production process, comprise movable end, stiff end, feed pipe and be positioned at valve on the feed pipe, described feed pipe comprises feed pipe I and feed pipe II, feed pipe I is connected with movable end, and feed pipe II is connected with stiff end.
Be fixedly connected with blind plate between middle part two filter plates of plate and frame filter press of the present invention.Blind plate is separated into two independent sectors to filter press, and blind plate can be with filter plate and filter frame motion, and blind plate is fixedlyed connected with filter plate.
The plate and frame filter press solid-liquid separating method that is used for the Citric Acid Production process, material enters simultaneously from feed pipe I and feed pipe II and carries out Separation of Solid and Liquid in the plate and frame filter press, after press filtration is finished, filter cake is washed and reclaims feed liquid from feed pipe I and feed pipe II water flowing.Press filtration after the charging simultaneously of the two ends of plate and frame filter press, under same pressure condition, filtration, wash water, squeezing time obviously shorten, and the filter press service efficiency improves.
The plate and frame filter press solid-liquid separating method that is used for the Citric Acid Production process, material enter from feed pipe I or feed pipe II and carry out Separation of Solid and Liquid in the plate and frame filter press, after press filtration is finished, filter cake are washed and reclaims feed liquid from feed pipe I or feed pipe II water flowing.Owing to be positioned at the blind plate in the middle of the plate and frame filter press, make press filtration be separated into two parts, can use simultaneously, also can only use an end wherein separately, also can be used alternatingly two ends, this end press filtration, the other end cleans filter cake, begins to clean filter cake after this end press filtration is finished, and the other end begins press filtration again, so just can realize continuously uninterrupted press filtration, when having improved the press filtration quality, also improve the operating efficiency of filter press.
The invention has the beneficial effects as follows: the plate and frame filter press that is used for the Citric Acid Production process, comprise movable end, stiff end, feed pipe and be positioned at valve on the feed pipe, described feed pipe comprises feed pipe I and feed pipe II, feed pipe I is connected with movable end, feed pipe II is connected with stiff end, and the middle part of plate and frame filter press is equipped with blind plate.Plate and frame filter press of the present invention is under same pressure condition, and filtration, wash water, squeezing time obviously shorten, and the filter press service efficiency improves; The filter cake wash water is more abundant, feed liquid rate of recovery height; Filter cake moisture content is low and even, and follow-up comprehensive utilization energy consumption is low; Good energy-conserving effect; Flow process is succinct, easy operating; The Separation of Solid and Liquid field that can be widely used in other relevant industries.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Among the figure: 1-feed pipe I, 2-valve, 3-movable end, 4-filter plate, 5-blind plate, 6-stiff end, 7-feed pipe II.
Executing mode in conjunction with Figure of description with concrete pass is described in further detail the present invention.
The specific embodiment
According to shown in Figure 1, the plate and frame filter press that is used for the Citric Acid Production process, comprise movable end 3, stiff end 6, feed pipe and be positioned at valve 2 on the feed pipe, described feed pipe comprises feed pipe I1 and feed pipe II7, feed pipe I1 is connected with movable end 3, feed pipe II6 is connected with stiff end 6, is fixedly connected with blind plate 5 between middle part two filter plates 4 of plate and frame filter press.By controlled valve 2 control material from feed pipe I1, feed pipe II7 simultaneously (or not simultaneously) enter the sheet frame filter and carry out Separation of Solid and Liquid, after reaching the press filtration requirement, from feed pipe I1, feed pipe II7 (or not simultaneously) water inlet simultaneously filter cake is washed and reclaims feed liquid again.
Application in citric acid fermentation mash Separation of Solid and Liquid
The filter filter cloth is completed, compress filter plate, valve 2 on feed pipe I1 and the feed pipe II7 is opened 1/3 aperture respectively prepare charging, utilize pump simultaneously from plate and frame filter press feed pipe I1 the karusen that stops the fermentation heat sterilization, feed pipe II7 enters off-the-shelf plate and frame filter press, feed pressure is controlled at 0.45MPa and carries out Separation of Solid and Liquid, treat again valve 2 all to be opened after feed liquid is full of whole platen frame, continue charging after 3 hours charging finish, stop feed pump, switch high-temperature-hot-water by feed pipe I1, feed pipe II7 enters plate and frame filter press filter cake is carried out wash water recovery dilture acid, wash water switched with the pressure-air 10min that blows in 15 minutes again, the dismounting filter plate.
The effect contrast in the karusen press filtration of two endfeed filters and common filter:
| Feeding manner | Feed pressure MPa | Feed time h | Wash water pressure MPa | Wash water time min | Blow gas pressure MPa | Gassing time min | Acid sludge moisture % | The residual sour % of acid sludge | The wash water situation |
| The present invention | 0.45 | 3 | 0.50 | 15 | 0.30 | 10 | 50-60 | 0.5-0.8 | Every page of filter plate all can be by wash water |
| Common filter press press filtration method | 0.50 | 4 | 0.50 | 15 | 0.30 | 10 | 60-65 | 1.2-1.5 | The filter end accounts for the filter plate of |
Application in citric acid acidolysis solid and liquid is separated
The filter filter cloth is completed, compress filter plate, valve 2 on feed pipe I1 and the feed pipe II7 is opened 1/3 aperture respectively and is prepared charging, acid hydrolysis solution after acid taken out utilizes pump simultaneously from plate and frame filter press feed pipe I1, feed pipe II7 enters off-the-shelf plate and frame filter press, feed pressure is controlled at 0.45MPa and carries out Separation of Solid and Liquid, treat again valve 2 all to be opened after feed liquid is full of whole platen frame, continue charging after 6 hours charging finish, stop feed pump, switch high-temperature-hot-water by feed pipe I1, feed pipe II7 enters plate and frame filter press filter cake is carried out wash water recovery dilture acid, wash water switched with the pressure-air 10min that blows in 15 minutes again, the dismounting filter plate.
The effect contrast in the acid hydrolysis solution press filtration of two endfeed filters and common filter:
| Feeding manner | Feed pressure MPa | Feed time h | Wash water pressure MPa | Wash water time min | Blow gas pressure MPa | Gassing time min | Filter cake moisture % | The residual sour % of filter cake | The wash water situation |
| The present invention | 0.45 | 6 | 0.50 | 15 | 0.30 | 10 | 40-50 | 3-4 | Every page of filter plate all can be by wash water |
| Common filter press press filtration method | 0.50 | 7 | 0.50 | 15 | 0.30 | 10 | 50-60 | 5-6 | The filter end accounts for the filter plate of |
Application in citric acid/salt mother liquor Separation of Solid and Liquid
The filter filter cloth is completed, compress filter plate, valve 2 on feed pipe I1 and the feed pipe II7 is opened 1/3 aperture respectively and is prepared charging, utilize pump simultaneously from plate and frame filter press feed pipe I1 in the citric acid/salt mother liquor after handling, feed pipe II7 enters off-the-shelf plate and frame filter press, feed pressure is controlled at 0.45MPa and carries out Separation of Solid and Liquid, treat again valve 2 all to be opened after feed liquid is full of whole platen frame, continue charging after 5 hours charging finish, stop feed pump, switch high-temperature-hot-water by feed pipe I1, feed pipe II7 enters plate and frame filter press filter cake is carried out wash water recovery dilture acid/salt, wash water switched with the pressure-air 10min that blows in 15 minutes again, the dismounting filter plate.
The effect contrast in citric acid/salt mother liquor press filtration of two endfeed filters and common filter:
| Feeding manner | Feed pressure MPa | Feed time h | Wash water pressure MPa | Wash water time min | Blow gas pressure MPa | Gassing time min | Filter cake moisture % | The residual acid of filter cake/salt % | The wash water situation |
| The present invention | 0.45 | 5 | 0.55 | 15 | 0.30 | 10 | 40-45 | 1-2 | Every page of filter plate all can be by wash water |
| Common filter press press filtration method | 0.50 | 6 | 0.55 | 15 | 0.30 | 10 | 45-55 | 3-4 | The filter end accounts for the filter plate of |
It is application in the liquefier sugar slag press filtration of raw material that the present invention also can be used for the corn
The filter filter cloth is completed, compress filter plate, valve 2 on feed pipe I1 and the feed pipe II7 is opened 1/3 aperture respectively prepare charging, the corn liquefaction liquid pump that liquefaction is qualified is to plate and frame filter press, liquefier is respectively from the feed pipe I1 of filter, feed pipe II7 enters filter, feed pressure is 0.45MPa, treat again valve 2 all to be opened after feed liquid is full of whole platen frame, continue charging 3 hours, stop feed pump, high-temperature-hot-water is passed through feed pipe I1, feed pipe II7 enters plate and frame filter press filter cake is carried out wash water recovery residual sugar, heat hydraulic pressure 0.55MPa, every leaf filter plate all have hot water to flow out wash water 10 minutes, air blowing 10min prepares the dismounting filter plate.
The effect contrast in the liquefier press filtration of two endfeed filters and common filter:
| Feeding manner | Feed pressure MPa | Feed time h | Wash water pressure MPa | Wash water time min | Blow gas pressure MPa | Gassing time min | The sugar pulp water divides % | Sugar slag starch % | The wash water situation |
| The present invention | 0.45 | 3 | 0.55 | 10 | 0.30 | 10 | 40-45 | 27-30 | Every page of filter plate all can be by wash water |
| Common filter press press filtration method | 0.50 | 4 | 0.55 | 10 | 0.30 | 10 | 45-50 | 32-38 | The filter end accounts for the filter plate of |
Claims (4)
1. the plate and frame filter press that is used for the Citric Acid Production process, comprise movable end, stiff end, feed pipe and be positioned at valve on the feed pipe, it is characterized in that: described feed pipe comprises feed pipe I and feed pipe II, and feed pipe I is connected with movable end, and feed pipe II is connected with stiff end.
2. the plate and frame filter press that is used for the Citric Acid Production process according to claim 1 is characterized in that: be fixedly connected with blind plate between middle part two filter plates of described plate and frame filter press.
3. the plate and frame filter press solid-liquid separating method that is used for the Citric Acid Production process according to claim 1, it is characterized in that: material enters simultaneously from feed pipe I and feed pipe II and carries out Separation of Solid and Liquid in the plate and frame filter press, after press filtration is finished, filter cake is washed and reclaims feed liquid from feed pipe I and feed pipe II water flowing.
4. the plate and frame filter press solid-liquid separating method that is used for the Citric Acid Production process according to claim 2, it is characterized in that: material enters from feed pipe I or feed pipe II and carries out Separation of Solid and Liquid in the plate and frame filter press, after press filtration is finished, filter cake is washed and reclaims feed liquid from feed pipe I or feed pipe II water flowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106117966A CN102091453A (en) | 2010-12-29 | 2010-12-29 | Plate-and-frame filter press used in citric acid production process and solid-liquid separating method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106117966A CN102091453A (en) | 2010-12-29 | 2010-12-29 | Plate-and-frame filter press used in citric acid production process and solid-liquid separating method thereof |
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| CN102091453A true CN102091453A (en) | 2011-06-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833580A (en) * | 2016-04-27 | 2016-08-10 | 杭州兴源环保设备有限公司 | Box type filter press filtering process of sodium sulfate |
| CN107982969A (en) * | 2017-12-27 | 2018-05-04 | 广西金邦泰科技有限公司 | A kind of filter press plate for filter press |
| CN113813660A (en) * | 2021-09-30 | 2021-12-21 | 天津渤化永利化工股份有限公司 | System and method for comprehensively treating ammonia II mud of combined alkali production device |
| CN114307389A (en) * | 2021-12-16 | 2022-04-12 | 潍坊英轩实业有限公司 | Filtering method for improving citric acid extraction yield and feed liquid quality |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200998617Y (en) * | 2007-01-09 | 2008-01-02 | 广州普得环保设备有限公司 | Balance pressure feeder unit of the mud press-filtering plate and frame |
| CN101810957A (en) * | 2010-02-01 | 2010-08-25 | 景津压滤机集团有限公司 | Rapid feeding device of pressure filter |
| CN201586416U (en) * | 2009-12-02 | 2010-09-22 | 河北宏亚胶管压滤机有限公司 | Automatic program controlled double-feeding and multi-dragging filter press |
| CN201643825U (en) * | 2010-01-19 | 2010-11-24 | 太极集团重庆涪陵制药厂有限公司 | Diaphragm plate filter press with adjustable processing capacity |
| CN201988244U (en) * | 2010-12-29 | 2011-09-28 | 日照金禾博源生化有限公司 | Plate-and-frame filter press |
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2010
- 2010-12-29 CN CN2010106117966A patent/CN102091453A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200998617Y (en) * | 2007-01-09 | 2008-01-02 | 广州普得环保设备有限公司 | Balance pressure feeder unit of the mud press-filtering plate and frame |
| CN201586416U (en) * | 2009-12-02 | 2010-09-22 | 河北宏亚胶管压滤机有限公司 | Automatic program controlled double-feeding and multi-dragging filter press |
| CN201643825U (en) * | 2010-01-19 | 2010-11-24 | 太极集团重庆涪陵制药厂有限公司 | Diaphragm plate filter press with adjustable processing capacity |
| CN101810957A (en) * | 2010-02-01 | 2010-08-25 | 景津压滤机集团有限公司 | Rapid feeding device of pressure filter |
| CN201988244U (en) * | 2010-12-29 | 2011-09-28 | 日照金禾博源生化有限公司 | Plate-and-frame filter press |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833580A (en) * | 2016-04-27 | 2016-08-10 | 杭州兴源环保设备有限公司 | Box type filter press filtering process of sodium sulfate |
| CN107982969A (en) * | 2017-12-27 | 2018-05-04 | 广西金邦泰科技有限公司 | A kind of filter press plate for filter press |
| CN113813660A (en) * | 2021-09-30 | 2021-12-21 | 天津渤化永利化工股份有限公司 | System and method for comprehensively treating ammonia II mud of combined alkali production device |
| CN114307389A (en) * | 2021-12-16 | 2022-04-12 | 潍坊英轩实业有限公司 | Filtering method for improving citric acid extraction yield and feed liquid quality |
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Application publication date: 20110615 |