CN101648131A - Preparation method of high effective retention and filtration agent cationic guar gum - Google Patents
Preparation method of high effective retention and filtration agent cationic guar gum Download PDFInfo
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- CN101648131A CN101648131A CN200910034599A CN200910034599A CN101648131A CN 101648131 A CN101648131 A CN 101648131A CN 200910034599 A CN200910034599 A CN 200910034599A CN 200910034599 A CN200910034599 A CN 200910034599A CN 101648131 A CN101648131 A CN 101648131A
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Abstract
The invention relates to a preparation method of a high effective retention and filtration agent cationic guar gum, belongs to the technical field of analytical biotechnology. The method comprises thefollowing steps: taking guar gum to perform alkalinizing, etherifying, cooling and neutralizing, crushing and drying, grinding and sieving and packaging, and finally obtaining the high effective retention and filtration agent cationic guar gum. The invention adopts low temperature alkalization so as to increase the viscosity of the cationic guar gum product, the reaction condition of etherification is mild; the product has high cationic substituted ratio, can interact well with negative fibre and filler particles so as to increase the retention and filtration effect of fibre and filler and reach good retention and filtration effect by using a little product, and is a high effective retention and filtration agent.
Description
Technical field
The present invention relates to a kind of preparation method of high effective retention and filtration agent cationic guar gum, belong to the analysis biological technical field.
Background technology
Guar gum is from the extensive a kind of high purifying natural polysaccharide that extracts in a kind of legume-cluster bean in Indian-Pakistani subcontinent of planting.Guar gum is a kind of nonionic polysaccharide with regard to molecular structure, and it is a molecular backbone with poly-mannose, connects with β (1-4) glycosidic bond between the D-mannopyranose unit.The D-galactopyranose then is connected on the poly-mannose backbone with α (1-6) key.Mannose is 2: 1 with the ratio of galactose units in the guar gum, is promptly connecting a galactose branches every a mannose unit, and structural formula is as follows.
Relative molecular mass 2.0 * 10
5～3.0 * 10
5
Report in the document that the molecular weight of guar gum is about 220000.The maximum characteristics of guar gum molecule also are that great advantage is closely similar with cellulosic structure, and this similitude makes it have very strong compatibility to fiber.Do not have non-polar group on the guar gum straight chain, most of primary hydroxyl and secondary hydroxyl all are in the outside, and the galactolipin side chain does not cover active alcoholic extract hydroxyl group, thereby guar gum has maximum hydrogen bond bonded area, when combining with cellulose, the hydrogen bond of formation is short in conjunction with distance, and adhesion is big.
The former powder of guar gum dissolves in the aqueous solution slowly, and defectives such as water insoluble matter content height limit its application to a great extent, can carry out chemical modification to the former powder of guar gum and enlarge its range of application.Carry out that at guar gum a lot of pertinent literature reports is arranged aspect cation-modified, but its substitution value is low, use amount is big, the unconspicuous drawbacks limit of retention and drainage effect its application widely.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, adopt semidry process, a kind of preparation method of high effective retention and filtration agent cationic guar gum is provided, on the strand of guar gum, introduce cation group, thereby obtain certain electropositive, improve retention, help filter and strengthen effect thereby it can be interacted with electronegative fiber, filler grain.
Technical scheme of the present invention: a kind of preparation method of high effective retention and filtration agent cationic guar gum, implementing key of the present invention is: the former powder of guar gum passes through alkalization, etherificate, cooling, neutralization, grinding, drying, pulverizes, sieves, and packing promptly gets high effective retention and filtration agent cationic guar gum.
1, the alkalization of the former powder of guar gum: the present invention adopts the low-temperature alkaline metallization processes, and the consumption of base catalyst is the 0.5%-4.0% of the former grain weight amount of guar gum, and alkalization temperature is 20-50 ℃, and the time is 10-100min, the OH in the reaction system
-Make the hydroxyl of guar gum be transformed into negative oxygen ion, strengthened the nucleophilie nucleus ability of guar gum hydroxyl greatly, thereby improved the substitution value of product significantly.And the decomposition reaction of low temperature alkalization can effectively reduction guar gum, the viscosity of raising cation guar gum product.
Described base catalyst is selected from NaOH or potassium hydroxide.Be mixed with solution during use, mass concentration is 10%-60%.
2, the etherification reaction of guar gum: under the effect of auxiliary agent, add cationic etherifying agent in the guar gum of above-mentioned alkalization, the consumption of cationic etherifying agent is the 10%-60% of guar gum weight, and the etherification reaction time is 1-5h, and reaction temperature is 60-90 ℃.By the effect of auxiliary agent, can effectively improve the efficient of etherification reaction, improve itself and electronegative fiber, filler grain interacts, thereby improve retention aid and filtering aid and strengthen effect.
Described cationic etherifying agent is selected from 2,3-epoxypropyl trimethylammonium chloride ammonium, 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride, diallyldimethylammonium chloride or 3-chloro-2-hydroxypropyl dodecyl dimethyl ammonium chloride.
Described auxiliary agent is selected from sodium chloride or potassium chloride.The use amount of auxiliary agent is the 0.5%-10% of the former grain weight amount of guar gum.
3, cooling, neutralization: the cooling of the product after etherificate back is neutralized with acid.
Described acid is selected from watery hydrochloric acid or acetic acid, and its mass concentration is 10%-50%.
4, grinding, drying: step (3) gained material enters pneumatic drier through the product after grinding, dry 2-10min under 105-130 ℃ of condition, and dried siccative moisture content is at 8%-12%.
5, pulverize, sieve, pack: the present invention adopts pulverizer to beat powder, fineness reached more than 100 orders after material behind the process drying was beaten powder through pulverizer, sieve by vibratory sieve, the powder that vibratory sieve comes out in time carries out in batches, divides grade packaged, promptly gets high effective retention and filtration agent cationic guar gum.
Beneficial effect of the present invention: compared with the prior art the present invention has the following advantages: the viscosity that adopts low temperature alkalization raising cation guar gum product, the etherification reaction mild condition, product cation substitution value height, improve retention, help filter and strengthen effect thereby can interact with electronegative fiber, filler grain preferably, using less amount just can reach good retention and drainage effect, is a kind of retention and drainage aid agent efficiently.
Description of drawings
The technological process of production schematic diagram of Fig. 1 high effective retention and filtration agent cationic guar gum.
The specific embodiment
Embodiment 1:
The preparation method of high effective retention and filtration agent cationic guar gum of the present invention adopts following processing step:
Add the potassium hydroxide of 0.5Kg in the former powder of the guar gum of 100Kg, be mixed with solution during use, mass concentration is 10%-60%.30min alkalizes under 20 ℃ of conditions, the cationic etherifying agent 3-chloro-2-hydroxypropyl dodecyl dimethyl ammonium chloride that adds 10Kg again, be warming up to 60 ℃, under the effect of 0.5Kg auxiliary agent potassium chloride, react 1h, reaction finishes the back cooling, with mass concentration is that 10% watery hydrochloric acid neutralizes, thick product after the neutralization enters pneumatic drier, dry 5min under 105 ℃ of conditions, dried siccative moisture content is 10%, fineness reached 100 orders after intermediate products behind the process drying were beaten powder through pulverizer, sieved by vibratory sieve, obtained retention and filtration agent cationic guar gum efficiently.
Embodiment 2:
The preparation method of high effective retention and filtration agent cationic guar gum of the present invention adopts following processing step:
Add the NaOH of 1Kg in the former powder of the guar gum of 100Kg, be mixed with solution during use, mass concentration is 10%-60%.10min alkalizes under 30 ℃ of conditions, the cationic etherifying agent 2 that adds 20Kg again, 3-epoxypropyl trimethylammonium chloride ammonium, be warming up to 65 ℃, under the effect of 4Kg auxiliary agent sodium chloride, react 1.5h, reaction finishes the back cooling, with mass concentration is that 50% acetic acid neutralizes, thick product after the neutralization enters pneumatic drier, dry 2min under 130 ℃ of conditions, dried siccative moisture content are 8%, and fineness reached 100 orders after the intermediate products behind the process drying were beaten powder through pulverizer, sieve by vibratory sieve, obtain retention and filtration agent cationic guar gum efficiently.
Embodiment 3
The preparation method of high effective retention and filtration agent cationic guar gum of the present invention adopts following processing step:
Add the NaOH of 4Kg in the former powder of the guar gum of 100Kg, be mixed with solution during use, mass concentration is 10%-60%.60min alkalizes under 40 ℃ of conditions, the cationic etherifying agent 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride that adds 30Kg again, be warming up to 80 ℃, under the effect of 6Kg auxiliary agent potassium chloride, react 4h, reaction finishes the back cooling, with mass concentration is that 30% acetic acid neutralizes, thick product after the neutralization enters pneumatic drier, dry 10min under 115 ℃ of conditions, dried siccative moisture content is 10%, fineness reached 100 orders after intermediate products behind the process drying were beaten powder through pulverizer, sieved by vibratory sieve, obtained retention and filtration agent cationic guar gum efficiently.
Claims (5)
1, a kind of preparation method of high effective retention and filtration agent cationic guar gum is characterized in that adopting following processing step:
(1), alkalization: the former powder of guar gum alkalizes under the base catalyst effect, and the consumption of base catalyst is the 0.5%-4.0% of the former grain weight amount of guar gum, and alkalization temperature is 20-50 ℃, and alkalization time is 10-100min;
(2), etherificate: under the effect of auxiliary agent, add cationic etherifying agent in the guar gum of alkalization, the consumption of cationic etherifying agent is the 10%-60% of guar gum weight, and the etherification reaction time is 1-5h, and reaction temperature is 60-90 ℃;
(3), cooling, neutralization: the cooling of the product after etherificate back is neutralized with acid;
(4), grinding, drying: step (3) gained material enters pneumatic drier through the product after grinding, dry 2-10min under 105-130 ℃ of condition, dried siccative moisture content is at 8%-12%;
(5), pulverize, sieve, pack: fineness reaches more than 100 orders after beating powder through the material behind the drying through pulverizer, sieve by vibratory sieve, the powder that vibratory sieve comes out in time carries out in batches, divides grade packaged, promptly gets high effective retention and filtration agent cationic guar gum.
2, the preparation method of high effective retention and filtration agent cationic guar gum according to claim 1 is characterized in that described base catalyst is selected from NaOH or potassium hydroxide, is mixed with solution during use, and mass concentration is 10%-60%.
3, the preparation method of high effective retention and filtration agent cationic guar gum according to claim 1 is characterized in that described auxiliary agent is selected from sodium chloride or potassium chloride, and the use amount of auxiliary agent is the 0.5%-10% of the former grain weight amount of guar gum.
4, the preparation method of high effective retention and filtration agent cationic guar gum according to claim 1, it is characterized in that described cationic etherifying agent is selected from 2,3-epoxypropyl trimethylammonium chloride ammonium, 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride, diallyldimethylammonium chloride or 3-chloro-2-hydroxypropyl dodecyl dimethyl ammonium chloride.
5, the preparation method of high effective retention and filtration agent cationic guar gum according to claim 1 is characterized in that the acid of described neutralization usefulness is selected from watery hydrochloric acid or acetic acid, and the mass concentration of acid is 10%-50%.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162200A (en) * | 2010-12-29 | 2011-08-24 | 上海东升新材料有限公司 | Retention and drainage aid and preparation method thereof |
| CN102363938A (en) * | 2011-06-30 | 2012-02-29 | 上海东升新材料有限公司 | Surface sizing agent and preparation method thereof |
| CN102720073A (en) * | 2012-07-02 | 2012-10-10 | 无锡金鑫科技有限公司 | Preparation method of high-substituted-ratio carboxyl methyl guar printing gum |
| CN106353273A (en) * | 2016-07-28 | 2017-01-25 | 中国石油大学(华东) | Method for determining content of guar gum or modified derivatives thereof and determining adsorption quantity of guar gum or modified derivatives thereof in stratum |
| CN107488239A (en) * | 2017-08-29 | 2017-12-19 | 山东瑞博斯烟草有限公司 | A kind of water-soluble fluorine synthetic method of cation peach gum and application |
| CN107501427A (en) * | 2017-08-29 | 2017-12-22 | 山东瑞博斯烟草有限公司 | A kind of organic solvent method synthetic method of cation peach gum and application |
| CN109928603A (en) * | 2019-04-23 | 2019-06-25 | 同济大学 | A kind of preparation method and application method of sludge green Assistant |
| CN109942721A (en) * | 2019-03-20 | 2019-06-28 | 淮海工学院 | A kind of methylolurea modified cation polysaccharide |
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2009
- 2009-09-03 CN CN200910034599A patent/CN101648131A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162200A (en) * | 2010-12-29 | 2011-08-24 | 上海东升新材料有限公司 | Retention and drainage aid and preparation method thereof |
| CN102162200B (en) * | 2010-12-29 | 2012-11-07 | 上海东升新材料有限公司 | Retention and drainage aid and preparation method thereof |
| CN102363938A (en) * | 2011-06-30 | 2012-02-29 | 上海东升新材料有限公司 | Surface sizing agent and preparation method thereof |
| CN102363938B (en) * | 2011-06-30 | 2013-06-12 | 上海东升新材料有限公司 | Surface sizing agent and preparation method thereof |
| CN102720073A (en) * | 2012-07-02 | 2012-10-10 | 无锡金鑫科技有限公司 | Preparation method of high-substituted-ratio carboxyl methyl guar printing gum |
| CN102720073B (en) * | 2012-07-02 | 2013-12-11 | 无锡金鑫科技有限公司 | Preparation method of high-substituted-ratio carboxyl methyl guar printing gum |
| CN106353273A (en) * | 2016-07-28 | 2017-01-25 | 中国石油大学(华东) | Method for determining content of guar gum or modified derivatives thereof and determining adsorption quantity of guar gum or modified derivatives thereof in stratum |
| CN106353273B (en) * | 2016-07-28 | 2019-05-21 | 中国石油大学(华东) | The measuring method of guar gum or its modification derivant adsorbance in the measurement of a kind of guar gum or its modification derivant content and stratum |
| CN107501427A (en) * | 2017-08-29 | 2017-12-22 | 山东瑞博斯烟草有限公司 | A kind of organic solvent method synthetic method of cation peach gum and application |
| CN107488239A (en) * | 2017-08-29 | 2017-12-19 | 山东瑞博斯烟草有限公司 | A kind of water-soluble fluorine synthetic method of cation peach gum and application |
| CN107488239B (en) * | 2017-08-29 | 2020-04-03 | 山东瑞博斯烟草有限公司 | Hydrosolvent method synthesis method and application of cationic peach gum |
| CN107501427B (en) * | 2017-08-29 | 2020-04-03 | 山东瑞博斯烟草有限公司 | Organic solvent method synthesis method and application of cationic peach gum |
| CN109942721A (en) * | 2019-03-20 | 2019-06-28 | 淮海工学院 | A kind of methylolurea modified cation polysaccharide |
| CN109942721B (en) * | 2019-03-20 | 2021-04-02 | 淮海工学院 | Aqueous solution of hydroxymethyl urea modified cationic polysaccharide |
| CN109928603A (en) * | 2019-04-23 | 2019-06-25 | 同济大学 | A kind of preparation method and application method of sludge green Assistant |
| CN109928603B (en) * | 2019-04-23 | 2021-06-29 | 同济大学 | Preparation method and use method of green sludge dewatering agent |
| CN111116705A (en) * | 2019-12-24 | 2020-05-08 | 同济大学 | Method for extracting protein from sludge by ozone treatment |
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Application publication date: 20100217 |