CN1108149A - Method for preparing filter aid composition - Google Patents
Method for preparing filter aid composition Download PDFInfo
- Publication number
- CN1108149A CN1108149A CN 94102261 CN94102261A CN1108149A CN 1108149 A CN1108149 A CN 1108149A CN 94102261 CN94102261 CN 94102261 CN 94102261 A CN94102261 A CN 94102261A CN 1108149 A CN1108149 A CN 1108149A
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- China
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- filter aid
- bentonite
- diatomite
- silica
- filter
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- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The infusorial earth, bentonite and solution of sodium silicate are mixed together, then the acificiation treatment using sulfuric acid or hydrochloric acid is conducted, finally the processes of water soaking, rinsing, drying again and packing. Said method features simple, scientific and easy spreading. The new filter aid produced by said method possesses of both filter aid function and adsorption clarifying function, it is capable of lowering down the productive cost and raising the filtering quality.
Description
The present invention relates to industrial filtering technique, particularly about a kind of manufacture method of new type filter aid.
Before the present invention, at food, chemical industry, industries such as medicine, be used for the liquid removal of impurities, remove the filter plant of colloid and worry bacterium, mostly be the plate and frame type filter-press of all size model, need adopt diatomite to make filter aid simultaneously, super-cell rises and stops and wash a layer filtration, has played and has helped the filter effect preferably, but adopt super-cell that weak point is easily arranged, the one, the adsorption capacity of diatomite own is poor, and some tiny diatomite particles, the influence that is stressed, easily penetrate the cardboard or the filter cloth that support usefulness again, all cause the reduction of filtering accuracy, the 2nd,, large usage quantity, general liquid per ton needs 0.7-1.2kg diatomite, makes to filter the cost height.
Purpose of the present invention, provide a kind of manufacture method of filter aid, the filter aid that adopts this method to produce, not only have and stop and wash a layer filtering function, and has a stronger adsorption function, reduce than super-cell use amount, filter cost and reduce, main is to have improved filtering accuracy greatly.
Content of the present invention is, a kind of manufacture method of filter aid is to be that the sodium solution of the silicic acid of 20-50% mixes with diatomite, bentonite and concentration, is the sulfuric acid of 20-40% or hcl acidifying processing 2-3 minute with concentration, with clear water flushing or soaked 1-2 hour, dry again or dry afterwards.The weight ratio of its diatomite, bentonite and sodium silicate solution is: diatomite is the 19-60% of gross weight, and bentonite is the 1-10% of gross weight, and sodium silicate solution is the 20-80% of gross weight.
Bentonite (bentonite) is a natural aluminium silicate, mainly by montmorillenite (AI
2O
34SIO
2NH
2O) form, its characteristic is fixing by water, volumetric expansion, and specific area increases, and has very strong adsorption function, and protein in can adsorptive liquid and microorganism etc. are used for the clarification of liquid more.And diatomite has adsorption function hardly, mainly be to stop and wash a layer filtering function, only as filter aid usefulness, the present invention allows diatomite and bentonite organically become one, make it to possess diatomite and bentonite obstruction, wash that layer filters and absorption, clarification dual-use function.
After diatomite, bentonite and sodium silicate solution mixed by a certain percentage, add concentration 20-40% sulfuric acid or hydrochloric acid solution, will mainly produce following chemical reaction:
Be sodium metasilicate and acid reaction, generate the band crystallization water and electrostatic charge active silica particulate, they will combine with diatomite and bentonite particulate by chemical bond and electrostatic adsorption, just pass through the effect of active silica hydrate, diatomite and bentonite particulate are combined as a whole, thereby make existing filter aid diatomite possess the adsorption function of bentonite, become a kind of novel " diatom-silica-bentonite " filter aid.In said process, also will generate a spot of " diatomite-silica " particulate, " bentonite-silica " particulate and " silica hyrate " particulate simultaneously, these particulates not only do not influence filter quality, and help the filtration and the clarification of liquid.The salt that generates in the chemical reaction can remove by washing, promptly with clear water flushing or soaked 1-2 hour, guarantees that soluble solid is few as far as possible in the new type filter aid, does not influence filtered liquid.With the filter aid that washed, dry again or dry and to pack.For making new type filter aid be suitable for different filtering objects and filter quality requirement, concentration that can be by the diatomaceous granular size of high speed and content, bentonite content and sodium silicate solution and how much realizing is produced a series of filter aid products.Big for concentration, require not too high liquid than thickness, filtering accuracy, can select the big and input amount of particle diameter to account for the diatomite of total amount larger proportion, and the bentonite and the sodium silicate solution of less input amount; And for protein content height, content of microorganisms height, require filter back clarity higher by the filtrate body, select generally that particle diameter is less, input amount accounts for the less diatomite of total amount for use, and drop into the bentonite and the sodium silicate solution of more content.
Below in conjunction with embodiment embodiment of the present invention is described:
Embodiment one, adopts this filter aid manufacture method, produces to be fit to the new type filter aid that beer industry is used.Select DA-2-150 type diatomite 150Kg for use, the 8Kg bentonite is made 8% suspension 100Kg earlier, and concentration is 40% sodium silicate solution 800L, the three mixes, and adds the sulfuric acid solution of concentration 25% then, and the limit adds sour limit and stirs, adjust about PH=2, make mixture generation aggregation, acidifying is after 2 hours, reaction product immersed in the clear water to stir soaked 2 hours, drain washed several times with water then, the back oven dry, pulverize, packing, this is novel to help filter to be mainly used in the beer filtration filter aid.
Use common super-cell, before formal the filtration, need 0.5 hour reflux operation, and the employing new type filter aid, owing to can expand rapidly after the suction, and strong adsorptivity is arranged, gravitation is arranged between the particle, be difficult for disperseing separately, only need 1-3 minute reflux operation during filtration, can reach quality requirement,, can make the amount of filling of filter aid only be the 1/3-2/3 of common super-cell because novel filtering agent has filter of helping and adsorption clarification dual-use function, reduced cost, improve filter quality, also do not influenced filter efficiency, be particularly suitable for the high beer of protein content, fruit drink, acidic liquids such as grape wine, can reach the aseptic filtration requirement.
Embodiment two, adopt this filter aid manufacture method, produce the water purification filter aid that the aspect of purifying waste water is used.Select the diatomite 200Kg of DA-1-250 type for use, 8% bentonite suspension 80Kg, the sodium silicate solution 400L of 40% concentration, after the mixing and stirring, the sulfuric acid of adding 40%, the limit edged stirs, and transfers about PH=2, will react condensation product then and soak 2 hours with clear water, drain again, washed several times with water, back oven dry is pulverized, packing.This new type filter aid is mainly used in water purification and filters, because the viscosity of water is low, and clarification better before the filter, can disposablely fill up filter aid, do not need in the filter to add, its flow velocity and filter quality are stable again, and filter back microbiological indicator can satisfy hygienic requirements, and, have more 3-4 doubly with the microorganism in the common super-cell liquid of same amount.
The present invention, method is simple, science, the common super-cell that only helps the filter function is become have absorption, the new type filter aid of clarification function, this method is implemented easily, be easy to promote, the filter aid of producing with this method is used for producing, and can reduce cost, improve filter quality, can produce a series of new type filter aids according to the filtering object needs with this method.
Claims (3)
1, a kind of manufacture method of filter aid is characterized in that, after diatomite, bentonite and sodium silicate solution are mixed, handles 2-3 hour with sulfuric acid or hcl acidifying, afterwards with the clear water flushing or soaked 1-2 hour, dries the back oven dry again, pulverizes.
2, according to the manufacture method of the described filter aid of claim 1, it is characterized in that, the weight ratio of diatomite, bentonite and sodium silicate solution is: diatomite is the 19-60% of gross weight, and bentonite is the 1-10% of gross weight, and concentration is that the silicic acid steel solution of 20-50% is the 20-80% of gross weight.
3, according to the manufacture method of the described filter aid of claim 1, the main composition silicon of its product also can be diatomite-silica; Bentonite-silica; Pottery or glass dust-silica; Silicon dioxide, hydrate or water insoluble and diluted acid do not have the powder-silica of influence again to liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94102261 CN1108149A (en) | 1994-03-08 | 1994-03-08 | Method for preparing filter aid composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94102261 CN1108149A (en) | 1994-03-08 | 1994-03-08 | Method for preparing filter aid composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1108149A true CN1108149A (en) | 1995-09-13 |
Family
ID=5030577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94102261 Pending CN1108149A (en) | 1994-03-08 | 1994-03-08 | Method for preparing filter aid composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108149A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528320B (en) * | 2006-07-14 | 2013-11-20 | 英默里斯筛选矿物公司 | Composition for filtering and removing particles and/or constituents from a fluid |
| EP3532194A4 (en) * | 2016-10-31 | 2020-05-06 | Imerys USA, Inc. | Composite filter aids and methods of using composite filter aids |
| CN111530136A (en) * | 2020-05-11 | 2020-08-14 | 北海艾米碳材料技术研发有限公司 | High-performance activated carbon purification forming filter element |
-
1994
- 1994-03-08 CN CN 94102261 patent/CN1108149A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528320B (en) * | 2006-07-14 | 2013-11-20 | 英默里斯筛选矿物公司 | Composition for filtering and removing particles and/or constituents from a fluid |
| US10066197B2 (en) | 2006-07-14 | 2018-09-04 | Imerys Filtration Minerals, Inc. | Composition for filtering and removing particles and/or constituents from a fluid |
| EP3532194A4 (en) * | 2016-10-31 | 2020-05-06 | Imerys USA, Inc. | Composite filter aids and methods of using composite filter aids |
| CN111530136A (en) * | 2020-05-11 | 2020-08-14 | 北海艾米碳材料技术研发有限公司 | High-performance activated carbon purification forming filter element |
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