CN103949100B - Be separated ceramic filter devices and the technique of magnesium hydroxide solution - Google Patents
Be separated ceramic filter devices and the technique of magnesium hydroxide solution Download PDFInfo
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- CN103949100B CN103949100B CN201410097742.0A CN201410097742A CN103949100B CN 103949100 B CN103949100 B CN 103949100B CN 201410097742 A CN201410097742 A CN 201410097742A CN 103949100 B CN103949100 B CN 103949100B
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Abstract
The present invention relates to a kind of ceramic filter devices and the technique that are separated magnesium hydroxide solution.Ceramic filter devices mainly comprises: inlet water tank, ceramic filter, cleaning water tank, sour case, dense water tank, intake pump, flushing water pump and valve.Filtration time is 20 ~ 40min, and cleaning comprises air water backwash and pickling.Ceramic filter is by housing, gripper shoe, and sealing ring, ceramic membrane or ceramic element form.The seawater containing certain magnesium ion concentration, bittern, saturated brine is adopted to be raw material, magnesium hydrate precipitate is formed after adding sodium hydroxide solution or ammoniacal liquor, adopt ceramic filter separation and recovery magnesium hydroxide to purify waste water simultaneously, efficiency is high, equipment easy cleaning, aquifer yield large, can select the pore size filter of filter element according to grain diameter size.And this filter can be adopted to wash magnesium hydroxide solution, to ensure magnesium hydroxide products quality.The present invention adopts magnesium hydroxide in ceramic filter fractionate aqueous solutions, not only can effectively ensure to produce water water quality, and recyclable magnesium hydroxide products.
Description
Technical field
The present invention relates to a kind of ceramic filter devices and the technique that are separated magnesium hydroxide solution.To containing granule magnesium hydroxide solution, adopt ceramic filter devices to carry out continous-stable Separation of Solid and Liquid, ensure the water quality of solution after filtering, reclaim magnesium hydroxide.
Background technology
Adopt seawater, bittern to extract magnesium hydroxide, can high-purity be obtained, ultra-fine and nano-sized magnesium hydroxide product, but in separation process, usually can little because of magnesium hydroxide particle, light specific gravity, viscosity are high, be colloidal solution, solution concentration is low, is difficult to be separated.
The domestic and international patent about magnesium hydroxide preparation is a lot of at present, as the manufacture of: the preparation of CN 02133360.2 nanometer magnesium hydoxide as smoke-inhibiting fire retardant and new surface treatment, CN96109067.7 magnesium hydroxide and application, CN90102696.4 finely powdery magnesium hydroxide and preparation method thereof and CN 1130682.3 homogeneous fluid process of preparing nanometer magnesium hydroxide, a CN01141787.0 preparation process of magnesium hydroxide fire-retarding nanomaterial etc. patent, although process is different, substantially all adopts vacuum filtration, the mode of centrifugal filtration or press filtration filters.Not only low, the intermittently operated of efficiency, and be difficult to realize large-scale production.Current employing ceramic filter solves the separation of magnesium hydroxide simultaneously and washing problem has no report.
Summary of the invention
The object of this invention is to provide a kind of ceramic filter devices and the technique that are separated magnesium hydroxide solution, the defect of prior art can be overcome.For halogen old after seawater, bittern, salt manufacturing, when adopting various method to synthesize magnesium hydroxide, adopt ceramic filter to be separated, wash magnesium hydroxide, after not only making filtration, solution can continue to utilize, and device separates efficiency is high, easy cleaning, flux are large, the pore size filter of filter element can be selected, to ensure magnesium hydroxide products quality according to grain diameter size.The present invention adopts magnesium hydroxide in ceramic filter fractionate aqueous solutions, not only can effectively ensure to produce water water quality, and recyclable magnesium hydroxide products.
A kind of ceramic filter devices being separated magnesium hydroxide solution provided by the invention mainly comprises: inlet water tank, intake pump, ceramic filter, flushing water pump, cleaning water tank, pickling water tank, dense water tank and valve; Valve comprises product water valve, return valve, dense water valve, Valve for washing, backwash valve, drain valve, dope recovery valve, cleaning drain valve, cleaning water valve, pickling valve, intake valve and drain valve.
Inlet water tank connects ceramic filter through intake pump, dense water tank connects the bottom of ceramic filter through dope recovery valve, flushing water pump is had between the bottom of ceramic filter and cleaning water tank, cleaning water valve is had between flushing water pump and cleaning water tank, pickling water tank is connected between flushing water pump and cleaning water valve through pickling valve, Valve for washing and backwash valve are installed between flushing water pump and the bottom of ceramic filter, there is cleaning drain valve between the bottom of ceramic filter and product water valve, between dope recovery valve and the bottom of ceramic filter, drain valve is installed; Inlet water tank is communicated with dense water valve through return valve, is connected the top of ceramic filter between return valve with dense water valve by pipeline, and this pipeline is installed into air valve, and drain valve is installed on the top of ceramic filter.
Ceramic filter comprises housing housing, upper cover, low head, ceramic membrane or ceramic element, fixing card, sealing ring, water inlet, the product mouth of a river, refluxing opening, the backwash mouth of a river, Pressure gauge, air inlet and exhaust outlet.
Upper cover and low head are arranged on housing via sealing ring and fixing card respectively, setting pressure table and the backwash mouth of a river on upper cover, and there is refluxing opening at the mouth of a river in backwash, low head is installed into the mouth of a river and air inlet; Housing upper has exhaust outlet, the You Chan mouth of a river, bottom.
Ceramic filter also comprises sealing ring, and ceramic filter is intake by bottom, and tip portion refluxes, and the dense water of part is collected, and for further washing, produces water by filter housings bottom; This ceramic filter housing is made up of engineering plastics (as macromolecular materials such as polyethylene, polypropylene, fiberglass) or carbon steel liner engineering plastics.
Described ceramic membrane or the arrangement of ceramic element are triangle, rhombus or other arrangement, and marshalling is even; Described ceramic membrane or ceramic element are cross-flow filtration, and membrane component adopts cushion rubber to seal; Filter for installation case top establishes air bleeding valve, is convenient to air water and cleans exhaust.
The size of described ceramic filter designs according to aquifer yield, and the quantity of built-in film can be single film
216 films.
Described ceramic membrane operating pressure is 0.1 ~ 0.5MPa, crossflow velocity 0.4 ~ 4m/s, and filtration time 20 ~ 40min cleans and is made up of pickling and washing.
Ceramic filter devices provided by the invention comprises the steps: for separating of the technique of magnesium hydroxide solution
1) filter: adopt the solution containing magnesium hydroxide to be raw material, open and produce water valve, return valve, dense water valve, start intake pump and material liquid is squeezed into ceramic filter, after ceramic filter, permeate is for utilizing for further, concentrate is partly refluxed to inlet water tank, and part, for containing high concentration of hydrogen magnesium oxide solution, can adopt the further washing concentrating of ceramic filter.
2) washing of filter: when 30 ~ 40min is carried out in filtration, stops and cleans.Open dope recovery valve, filter middle and high concentration magnesium hydroxide solution is put to dense water tank, close dope recovery valve; Open cleaning water valve, backwash valve, drain valve, start flushing water pump, there are flowing out to drain valve, stop flushing water pump, close drain valve, open intake valve, drain valve, pass into compressed air and carry out air water scouring to filter, 5 ~ 10s closes intake valve, opens drain valve, water in filter is put only, close cleaning water valve; Open pickling valve, startup flushing water pump, have acid outflow, stop flushing water pump, close drain valve to drain valve, pass into compressed air and carry out gas acid scouring to filter, 5 ~ 10s closes intake valve, opens drain valve, acid in filter is put clean closedown pickling valve; Open cleaning water valve, start flushing water pump, there are flowing out to drain valve, stop flushing water pump, open intake valve, pass into compressed air and air water scouring is carried out to filter, 5 ~ 10s closes intake valve, opening drain valve puts only by water in filter, closes drain valve, cleaning water valve, intake valve, drain valve, enters filtration condition.
Provided by the invention a kind of be separated magnesium hydroxide solution ceramic filter devices and technique comprise and filtering and cleaning.Filtration time is 20 ~ 40min, and cleaning comprises air water backwash and pickling.The present invention is for separating of recovery magnesium hydroxide and purify waste water, and efficiency is high, equipment easy cleaning, aquifer yield large, can select the pore size filter of filter element according to grain diameter size.And this filter can be adopted to wash magnesium hydroxide solution, to ensure magnesium hydroxide products quality.The present invention adopts magnesium hydroxide in ceramic filter fractionate aqueous solutions, not only can effectively ensure to produce water water quality, and recyclable magnesium hydroxide products.
Accompanying drawing explanation
Fig. 1 ceramic membrane filter magnesium hydroxide process flow diagram.
Fig. 2 ceramic filter structure schematic diagram.
Detailed description of the invention
The present invention is described in detail as follows by reference to the accompanying drawings:
As shown in Figure 1,1-inlet water tank, 2-intake pump, 3-ceramic membrane, 4-flushing water pump, 5-cleans water tank, 6-pickling water tank, the dense water tank of 7-, 8-produces water valve, 9-return valve, the dense water valve of 10-, 11-Valve for washing, 12-backwash valve, 13-drain valve, 14-dope recovery valve, 15-cleans drain valve, and 16-cleans water valve, 17-pickling valve, 18-intake valve, 19-drain valve.
Inlet water tank 1 connects ceramic filter 3 through intake pump 2, dense water tank 7 connects the bottom of ceramic filter 3 through dope recovery valve 14, flushing water pump 4 is had between the bottom of ceramic filter 3 and cleaning water tank 5, have between flushing water pump 4 and cleaning water tank 5 and clean water valve 16, pickling water tank 6 is connected between flushing water pump 4 and cleaning water valve 16 through pickling valve 17, Valve for washing 11 and backwash valve 12 are installed between the bottom of flushing water pump 4 and ceramic filter 3, have between the bottom of ceramic filter 3 and product water valve 8 and clean drain valve 15, drain valve 13 is installed between the bottom of dope recovery valve 14 and ceramic filter 3, inlet water tank 1 is communicated with dense water valve 10 through return valve 9, and be connected the top of ceramic filter 3 between return valve 9 with dense water valve 10 by pipeline, this pipeline is installed into air valve 18, and drain valve 19 is installed on the top of ceramic filter 3.
As shown in Figure 2, ceramic filter comprises 20-housing, 21 upper covers, 22-low head, 23-sealing ring, 24-ceramic membrane or ceramic element, 25-fixes card, 26-water inlet, and 27-produces the mouth of a river, 28-refluxing opening, the 29-backwash mouth of a river, 30-Pressure gauge, 31-air inlet, 32-exhaust outlet.
Upper cover 21 and low head 22 are installed on the housing 20 via sealing ring 23 and fixing card 25 respectively, and on upper cover 21, the backwash mouth of a river 29 there is refluxing opening 28 at setting pressure table 30 and the backwash mouth of a river 29, low head 22 are installed into the mouth of a river 26 and air inlet 31; Exhaust outlet is arranged at housing 20 top, the You Chan mouth of a river, bottom 27.
This ceramic filter housing is made up of engineering plastics (as macromolecular materials such as polyethylene, polypropylene, fiberglass) or carbon steel liner engineering plastics or rubber.Sealing ring 23 and upper and lower fixing card 25 are the critical components being carried out by process water being separated, ceramic element 24 is through fixing card 25, by sealing ring 23 filter core fixed and be sealed on fixing card 25, filter core produces water and is exported by the housing product mouth of a river 27, partial concentration liquid refluxes through refluxing opening 28 and continues to concentrate, and partial concentration liquid drains into subsequent processing through refluxing opening 28 and reclaims magnesium hydroxide.
The seawater of to be magnesium hydroxide concentration in embodiment 1 inlet water tank 1 be 3800mg/L, ceramic membrane membrane aperture is 0.2mm, crossflow velocity 0.6m/s.
Seawater inlet amount is 3m
3/ h, adopts intake pump 2 that the seawater containing magnesium hydroxide solution is squeezed into ceramic filter 3, after ceramic filter, permeate is purifying sea water, and concentrate is high concentration of hydrogen magnesium oxide solution, partial reflux, part squeezes into dense water tank 7 for continuing process, and after 30min, system enters cleaning state.It is 0.2 ~ 0.5NTU that system produces water turbidity.
Opening dope recovery valve 14 puts to dense water tank by liquid in filter, closes dope recovery valve 14; Open cleaning water valve 16, backwash valve 12, drain valve 13, start flushing water pump 4, there are flowing out to drain valve 13, stop flushing water pump 4, close drain valve 13, open intake valve 18, drain valve 19, pass into compressed air and carry out air water scouring to filter, 5 ~ 10s closes intake valve 18, opens valve 13, water in filter is put only, close cleaning water valve 16; Open pickling valve 17, start scavenging pump 4, have acid to flow out to drain valve 13, stop flushing water pump 4, close drain valve 13, open intake valve 18, pass into compressed air and gas acid scouring is carried out to filter, gas flow 500L/s, pressure 0.6MPa, 5 ~ 10s closes intake valve 18, opens drain valve 13 and puts only by acid in filter, closes pickling valve 17; Open cleaning water valve 16, start flushing water pump 4, there are flowing out to drain valve 13, stop flushing water pump 4, close drain valve 13, open intake valve 18, pass into compressed air and carry out air water scouring to filter, 5 ~ 10s closes intake valve 18, opens drain valve 13 and puts only by water in filter, close intake valve 18, drain valve 19, cleaning water valve 16, drain valve 13, system enters filtration condition.
Be the magnesium hydroxide saturated brine containing 1.5 ‰ mass concentrations in embodiment 2 inlet water tank 1, ceramic membrane membrane aperture is 0.2mm, crossflow velocity 0.2m/s.
Saturated brine inlet amount is 9m
3/ h, adopts intake pump 4 that inlet water tank 1 Raw seawater is squeezed into ceramic filter 3, after ceramic filter, permeate is purification saturated brine, and concentrate is for containing high concentration of hydrogen magnesium oxide solution, partial reflux, part squeezes into dense water tank 7 for continuing process, and after 30min, system enters cleaning state.It is 0.5 ~ 2NTU that system produces water turbidity.
Opening dope recovery valve 14 puts only by liquid in filter, closes dope recovery valve 14; Open cleaning water valve 16, backwash valve 12, drain valve 13, start flushing water pump 4, there are flowing out to drain valve 13, stop flushing water pump 4, close drain valve 13, open intake valve 18, drain valve 19, pass into compressed air and carry out air water scouring to filter, 5 ~ 10s closes intake valve 18, opens drain valve 13, water in filter is put only, close cleaning water valve 16; Open pickling valve 17, start flushing water pump 4, have acid to flow out to drain valve 13, stop flushing water pump 4, close drain valve 13, open intake valve 18, pass into compressed air and gas acid scouring is carried out to filter, gas flow 500L/s, pressure 0.6MPa, 5 ~ 10s closes intake valve 18, opens drain valve 13 and puts only by acid in filter, closes pickling valve 17; Open cleaning water valve 16, start flushing water pump 4, there are flowing out to drain valve 13, stop flushing water pump 4, close drain valve 13, open intake valve 18, pass into compressed air and carry out air water scouring to filter, 5 ~ 10s closes intake valve 18, opens drain valve 13 and puts only by water in filter, close intake valve 18, drain valve 19, cleaning water valve 16, drain valve 13, system enters filtration condition.
The present invention discloses and the ceramic filter devices being separated magnesium hydroxide solution proposed and technique, can be applicable to other boring Separation of Solid and Liquid similar to magnesium hydroxide solution, those skilled in the art are by using for reference present disclosure, the links such as suitable change process route realize, although method of the present invention is described by preferred embodiment, person skilled obviously can change method as herein described or reconfigure not departing from content of the present invention, spirit and scope, realizes final result.Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the art, they are all deemed to be included in spirit of the present invention, scope and content.
Claims (7)
1. one kind is separated the technique of the ceramic filter devices of magnesium hydroxide solution, this ceramic filter devices mainly comprises: inlet water tank, intake pump, ceramic filter, flushing water pump, cleaning water tank, pickling water tank, dense water tank and valve, and valve comprises product water valve, return valve, dense water valve, Valve for washing, backwash valve, sour drain valve, dope recovery valve, cleaning drain valve, cleaning water valve, pickling valve, the gentle drain valve of intake valve; Inlet water tank connects ceramic filter through intake pump, dense water tank connects the bottom of ceramic filter through dope recovery valve, flushing water pump is had between the bottom of ceramic filter and cleaning water tank, cleaning water valve is had between flushing water pump and cleaning water tank, pickling water tank is connected between flushing water pump and cleaning water valve through pickling valve, Valve for washing and backwash valve are installed between flushing water pump and the bottom of ceramic filter, there is cleaning drain valve between the bottom of ceramic filter and product water valve, between dope recovery valve and the bottom of ceramic filter, sour drain valve is installed; Inlet water tank is communicated with dense water valve through return valve, is connected the top of ceramic filter between return valve with dense water valve by pipeline, and this pipeline is installed into air valve, and gas drain valve is installed on the top of ceramic filter; It is characterized in that comprising the steps: 1) filter: adopt the solution containing magnesium hydroxide to be raw material, open and produce water valve, return valve, dense water valve, start intake pump and material liquid is squeezed into ceramic filter, after ceramic filter, permeate is that purifying sea water is for utilizing further, concentrate high concentration of hydrogen magnesium oxide solution partial reflux, part, to squeezing into dense water tank, adopts the further washing concentrating of ceramic filter; 2) washing of filter: when 30 ~ 40min is carried out in filtration, stops and cleans, open dope recovery valve, put to dense water tank by filter middle and high concentration magnesium hydroxide solution, closes dope recovery valve; Open cleaning water valve, backwash valve, sour drain valve, start flushing water pump, there are flowing out to sour drain valve, stop flushing water pump, close sour drain valve, open intake valve, gas drain valve, pass into compressed air and carry out air water scouring to filter, 5 ~ 10s closes intake valve, opens sour drain valve, water in filter is put only, close cleaning water valve; Open pickling valve, startup flushing water pump, have sour outflow, stop flushing water pump, close sour drain valve to sour drain valve, pass into compressed air and carry out gas acid scouring to filter, 5 ~ 10s closes intake valve, opens sour drain valve, acid in filter is put clean closedown pickling valve; Open cleaning water valve, start flushing water pump, there are flowing out to sour drain valve, stop flushing water pump, open intake valve, pass into compressed air and air water scouring is carried out to filter, 5 ~ 10s closes intake valve, open sour drain valve water in filter is put only, close sour drain valve, cleaning water valve, intake valve, gas drain valve, enter filtration condition.
2., according to technique according to claim 1, it is characterized in that described ceramic filter comprises housing, upper cover, low head, ceramic membrane or ceramic element, fixing card, sealing ring, water inlet, the product mouth of a river, refluxing opening, the backwash mouth of a river, Pressure gauge, air inlet and exhaust outlet; Upper cover and low head are arranged on housing via sealing ring and fixing card respectively, setting pressure table and the backwash mouth of a river on upper cover, and there is refluxing opening at the mouth of a river in backwash, low head is installed into the mouth of a river and air inlet; Housing upper has exhaust outlet, the You Chan mouth of a river, bottom.
3., according to technique according to claim 2, it is characterized in that described housing is made up of polyethylene, polypropylene, fiberglass or carbon steel liner engineering plastics.
4., according to technique according to claim 2, it is characterized in that the arrangement of described ceramic membrane or ceramic element is triangle, rhombus.
5., according to technique according to claim 2, it is characterized in that described ceramic membrane or ceramic element are inner pressed cross-flow filtration; Membrane component is hollow tubular type, adopts sealing ring to be fixed on fixing card by film pipe.
6., according to technique according to claim 2, it is characterized in that the quantity of placing membrane component in described ceramic filter is single film-72 films.
7., according to technique according to claim 2, it is characterized in that described ceramic membrane operating pressure is 0.1 ~ 0.5MPa, crossflow velocity 0.15 ~ 4m/s, filtration time 20 ~ 40min.
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| CN201410097742.0A CN103949100B (en) | 2013-06-21 | 2014-03-18 | Be separated ceramic filter devices and the technique of magnesium hydroxide solution |
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| CN201310248260.6 | 2013-06-21 | ||
| CN201310248260 | 2013-06-21 | ||
| CN201410097742.0A CN103949100B (en) | 2013-06-21 | 2014-03-18 | Be separated ceramic filter devices and the technique of magnesium hydroxide solution |
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| CN103949100B true CN103949100B (en) | 2015-10-07 |
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| CN104324615A (en) * | 2014-11-21 | 2015-02-04 | 成都瑞芬思生物科技有限公司 | Micro-filtration membrane filtering device for bio-pharmaceuticals |
| CN104841195A (en) * | 2015-06-02 | 2015-08-19 | 中国恩菲工程技术有限公司 | Purification and recovery device for chlorosilane waste liquid and purification and recovery method for chlorosilane waste liquid |
| CN107551651A (en) * | 2017-09-22 | 2018-01-09 | 江门市河正环保设备有限公司 | A kind of intelligently filters device |
| CN109775783A (en) * | 2019-03-04 | 2019-05-21 | 马钢(合肥)板材有限责任公司 | A kind of on-line cleaning method of desalination water pre-treatment means |
| CN111229041A (en) * | 2020-03-04 | 2020-06-05 | 国初科技（厦门）有限公司 | Device and method for concentrating inorganic powder slurry of flat ceramic membrane |
| CN113877423B (en) * | 2021-11-10 | 2024-04-02 | 第一环保（深圳）股份有限公司 | Method for treating high-organic waste liquid by high-temperature-resistant ceramic silicon carbide film |
| CN116282409B (en) * | 2022-12-02 | 2023-09-29 | 哈尔滨工业大学 | Magnesium circulation membrane electrolysis/ceramic membrane filtration coupling device and application method thereof |
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| JPH10296060A (en) * | 1997-04-25 | 1998-11-10 | Japan Organo Co Ltd | Prevention method for contamination of separation membrane |
| JP2004130205A (en) * | 2002-10-10 | 2004-04-30 | Fuji Electric Systems Co Ltd | Method and apparatus for backwashing filter membrane with ozone-containing water |
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| CN201186181Y (en) * | 2008-05-06 | 2009-01-28 | 萍乡市西源填料厂 | Ceramic film filter |
| CN103349859A (en) * | 2013-04-22 | 2013-10-16 | 天津滨瀚环保科技发展有限公司 | Ceramic filter apparatus for separating calcium carbonate solution, and process thereof |
| CN203329454U (en) * | 2013-06-21 | 2013-12-11 | 天津滨瀚环保科技发展有限公司 | Ceramic filter device for separating magnesium hydroxide solution |
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Effective date of registration: 20161009 Address after: 300450, Tianjin TEDA Development Zone, No. 19 TEDA Service Outsourcing Industrial Park No. 8, building 2 (Tianjin Binhai Service Outsourcing Industry Co., Ltd. trusteeship No. 2372nd) Patentee after: Tianjin Hui Hui Technology Development Co., Ltd. Address before: 300450, room 318, building 13-B, No. 4668 Xin Bei Lu, Binhai New Area, Tianjin, Tanggu Patentee before: BIN HAN Eco-Technologies Co., Ltd. |