CN104945523A - Environment-friendly cation starch flocculant and preparing method thereof - Google Patents
Environment-friendly cation starch flocculant and preparing method thereof Download PDFInfo
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- CN104945523A CN104945523A CN201510396253.XA CN201510396253A CN104945523A CN 104945523 A CN104945523 A CN 104945523A CN 201510396253 A CN201510396253 A CN 201510396253A CN 104945523 A CN104945523 A CN 104945523A
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Abstract
The invention discloses an environment-friendly cation starch flocculant and a preparing method thereof. The environment-friendly cation starch flocculant is prepared from waxy maize starch. The degree of substitution (DS) of the obtained cation starch flocculant is larger than or equal to 0.45. The cation starch flocculant has the advantages that gelatinization can be achieved easily in cold water, transparency and stability are realized, dispersibility is water is high, and positive charge performance is extremely high. The cation starch flocculant has a good flocculation effect for various anion impurities in sewage. The sources of raw materials of the environment-friendly cation starch flocculant are wide, the cost of raw materials is low, the product can be biodegraded completely so that a virtuous cycle can be realized, and the cation starch flocculant can be applied and promoted as a new generation of environment-friendly flocculant.
Description
Technical field
The present invention relates to use macromolecular compound, making the method field of the harmless or harm reduction of the chemical substance that is harmful to by producing chemical transformation, being specifically related to a kind of environment-friendly type cationic flocculant and preparation method thereof.
Technical background
Along with the fast development of industry, the generation of various trade effluent is increasing, and in water, suspended substance major part is anion.Flocculation agent is widely used in sewage purification, in recent years, polymeric flocculant output increases fast, in existing market, more than 85% is synthetic polymeric flocculant, mainly various cationic polyacrylamide in practical application, but owing to there is biological degradation difficulty, residual monomer acrylamide is poisonous, the foreign material of flocculation have secondary pollution to be difficult to the shortcomings such as process.Along with country improves constantly water resources and environmental requirement, based on the developing direction of natural type polymeric flocculant, just particularly noticeable.
Summary of the invention
The object of the invention is to solve the biological degradation existed in current polymeric flocculant foreign material that are difficult, flocculation have secondary pollution and be difficult to the shortcomings such as process, there is provided a kind of raw material sources extensive, cheap, its product can by complete biodegradable, form eucyclic environment-friendly type cationic starch flocculant, this flocculation agent substitution value DS >=0.45, have the easy gelatinization of cold water, transparent and stable and in water good dispersity, there is the advantages such as extremely strong positive charge performance.
Another object of the present invention is the preparation method providing above-mentioned environment-friendly type cationic starch flocculant.
Above-mentioned purpose of the present invention is achieved by the following technical programs:
A kind of preparation method of environment-friendly type cationic starch flocculant comprises the steps:
(1) waxy corn starch is put in mixing tank, in whipping process, add ethanolic soln, after stirring 20 ~ 60min, add sodium hydroxide powder, 2 are added after stirring 20 ~ 60min, 3-epoxypropyltrimethylchloride chloride, stirs 20 ~ 60min, by the sealing of above mixture, place stand-by;
(2) put in retort by step (1) gained mixture and react, temperature of reaction is 50 ~ 80 DEG C, and the reaction times is 60 ~ 180min; Cooling after completion of the reaction, fragmentation, obtain environment-friendly type cationic starch flocculant;
Wherein, in step (1), the concentration of described ethanolic soln is 30 ~ 60%, and add-on is 8 ~ 20wt% of waxy corn starch; The add-on of described sodium hydroxide powder is 1 ~ 3wt% of waxy corn starch; The add-on of described 2,3-epoxypropyltrimethylchloride chlorides is 30 ~ 55wt% of waxy corn starch; The temperature of described placement is under 30 ~ 50 DEG C of environment, and storage period is 12 ~ 48h.
Environment-friendly type cationic starch flocculant substitution value DS >=0.45 that the preparation method of above-mentioned environment-friendly type cationic starch flocculant obtains, have the easy gelatinization of cold water, transparent and stable and in water good dispersity, there is the advantages such as extremely strong positive charge performance.
Compared with prior art, the present invention has following beneficial effect:
(1) environment-friendly type cationic starch flocculant substitution value DS >=0.45 of the present invention, have the easy gelatinization of cold water, transparent and stable and in water good dispersity, there is the advantages such as extremely strong positive charge performance;
(2) in environment-friendly type cationic starch flocculant preparation process of the present invention, adopt solid 2,3-epoxypropyltrimethylchloride chloride is as cationic etherifying agent, be more suitable for dry state reaction, make environment-friendly type cationic starch flocculant not need to carry out baking step, save Production Time, save production cost;
(3) raw materials used wide material sources in environment-friendly type cationic starch flocculant preparation process of the present invention, cheap, and its product by complete biodegradable, can be formed benign cycle, can be used as environmental protection flocculant of new generation and apply.
Embodiment
Below in conjunction with embodiment, the present invention is further elaborated.But embodiment does not limit in any form the present invention.
Embodiment 1
Getting waxy corn starch 100kg adds in mixing tank, configures the ethanolic soln of 50% concentration, gets 10kg and sprays in starch, stir after 30 minutes, add 2kg powdered sodium hydroxide, stir 20 minutes, add 45kg solid powder/particle quaternary ammonium cation etherifying agent (2,3-epoxypropyltrimethylchloride chloride, EPTAC, be called for short ETA), continue stirring 30 minutes, work in-process are put into the packing bag of good airproof performance, tie packaging sack, prevent air from contacting, be placed in temperature at the environment of 30 DEG C, place 24 hours.Slowly dropped in retort by the work in-process placed above, temperature of reaction 75 DEG C, keep dehumidifier state, react 90 minutes, cooling, fragmentation, obtain finished product by the packaging bags of good airproof performance.
Embodiment 2
Getting waxy corn starch 100kg adds in mixing tank, configures the ethanolic soln of 40% concentration, gets 12kg and sprays in starch, stir after 20 minutes, add 3kg powdered sodium hydroxide, stir 30 minutes, add 40kg solid powder/particle quaternary ammonium cation etherifying agent (2,3-epoxypropyltrimethylchloride chloride, EPTAC, be called for short ETA), continue stirring 60 minutes, work in-process are put into the packing bag of good airproof performance, tie packaging sack, prevent air from contacting, be placed in temperature at the environment of 35 DEG C, place 24 hours.Slowly dropped in retort by the work in-process placed above, temperature of reaction 80 DEG C, keep dehumidifier state, react 120 minutes, cooling, fragmentation, obtain finished product by the packaging bags of good airproof performance.
Embodiment 3
Getting waxy corn starch 100kg adds in mixing tank, configures the ethanolic soln of 30% concentration, gets 20kg and sprays in starch, stir after 30 minutes, add 1kg powdered sodium hydroxide, stir 20 minutes, add 55kg solid powder/particle quaternary ammonium cation etherifying agent (2,3-epoxypropyltrimethylchloride chloride, EPTAC, be called for short ETA), continue stirring 30 minutes, work in-process are put into the packing bag of good airproof performance, tie packaging sack, prevent air from contacting, be placed in temperature at the environment of 30 DEG C, place 24 hours.Slowly dropped in retort by the work in-process placed above, temperature of reaction 75 DEG C, keep dehumidifier state, react 90 minutes, cooling, fragmentation, obtain finished product by the packaging bags of good airproof performance.
Embodiment 4
Getting waxy corn starch 100kg adds in mixing tank, configures the ethanolic soln of 60% concentration, gets 8kg and sprays in starch, stir after 30 minutes, add 3kg powdered sodium hydroxide, stir 20 minutes, add 30kg solid powder/particle quaternary ammonium cation etherifying agent (2,3-epoxypropyltrimethylchloride chloride, EPTAC, be called for short ETA), continue stirring 30 minutes, work in-process are put into the packing bag of good airproof performance, tie packaging sack, prevent air from contacting, be placed in temperature at the environment of 30 DEG C, place 24 hours.Slowly dropped in retort by the work in-process placed above, temperature of reaction 75 DEG C, keep dehumidifier state, react 90 minutes, cooling, fragmentation, obtain finished product by the packaging bags of good airproof performance.
Experimental example 1
Use the water of more than 10 DEG C, the flocculation agent of embodiment 1 and 2 gained is stirred 1h according to the concentration of 1wt% flocculation agent can be made to be uniformly dispersed.
Traditional cationic polyacrylamide then needs to soak more than 24h according to the concentration of 1wt% and just dispersibles evenly.
Claims (2)
1. a preparation method for environment-friendly type cationic starch flocculant, is characterized in that comprising the steps:
(1) waxy corn starch is put in mixing tank, in whipping process, add ethanolic soln, after stirring 20 ~ 60min, add sodium hydroxide powder, 2 are added after stirring 20 ~ 60min, 3-epoxypropyltrimethylchloride chloride, stirs 20 ~ 60min, by the sealing of above mixture, place stand-by;
(2) put in retort by step (1) gained mixture and react, temperature of reaction is 50 ~ 80 DEG C, and the reaction times is 60 ~ 180min; Cooling after completion of the reaction, fragmentation, obtain environment-friendly type cationic starch flocculant;
Wherein, in step (1), the concentration of described ethanolic soln is 30 ~ 60%, and add-on is 8 ~ 20wt% of waxy corn starch; The add-on of described sodium hydroxide powder is 1 ~ 3wt% of waxy corn starch; The add-on of described 2,3-epoxypropyltrimethylchloride chlorides is 30 ~ 55wt% of waxy corn starch; The temperature of described placement is under 30 ~ 50 DEG C of environment, and storage period is 12 ~ 48h.
2. the environment-friendly type cationic starch flocculant that obtains of the preparation method of environment-friendly type cationic starch flocculant described in claim 1.
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| CN201510396253.XA CN104945523A (en) | 2015-07-08 | 2015-07-08 | Environment-friendly cation starch flocculant and preparing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474188A (en) * | 2017-08-04 | 2017-12-15 | 河北省科学院能源研究所 | A kind of cationic starch flocculant and preparation method thereof |
| CN108101180A (en) * | 2017-12-29 | 2018-06-01 | 天津德清科技有限公司 | A kind of sewage-treating agent and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06100603A (en) * | 1992-09-21 | 1994-04-12 | Shikishima Boseki Kk | Production of cationic starch |
| CN1352196A (en) * | 2001-11-27 | 2002-06-05 | 岳阳纸业股份有限公司 | Process for preparing quaternary ammonium cation starch by semi-dry method |
| CN102408488A (en) * | 2011-08-31 | 2012-04-11 | 华南理工大学 | Quaternary ammonium type cationic starch gene controlled release vector material and preparation method and application thereof |
| CN103421124A (en) * | 2013-08-30 | 2013-12-04 | 华南理工大学 | High-substitution-degree quaternary ammonium type cationic sticky rice starch and manufacturing method thereof |
| CN104193837A (en) * | 2014-09-05 | 2014-12-10 | 北京联合大学 | Cationic starch flocculating agent and preparation method thereof |
| CN104497153A (en) * | 2014-11-24 | 2015-04-08 | 广东中轻枫泰生化科技有限公司 | Preparation method of low-viscosity quaternary ammonium cationic starch |
-
2015
- 2015-07-08 CN CN201510396253.XA patent/CN104945523A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06100603A (en) * | 1992-09-21 | 1994-04-12 | Shikishima Boseki Kk | Production of cationic starch |
| CN1352196A (en) * | 2001-11-27 | 2002-06-05 | 岳阳纸业股份有限公司 | Process for preparing quaternary ammonium cation starch by semi-dry method |
| CN102408488A (en) * | 2011-08-31 | 2012-04-11 | 华南理工大学 | Quaternary ammonium type cationic starch gene controlled release vector material and preparation method and application thereof |
| CN103421124A (en) * | 2013-08-30 | 2013-12-04 | 华南理工大学 | High-substitution-degree quaternary ammonium type cationic sticky rice starch and manufacturing method thereof |
| CN104193837A (en) * | 2014-09-05 | 2014-12-10 | 北京联合大学 | Cationic starch flocculating agent and preparation method thereof |
| CN104497153A (en) * | 2014-11-24 | 2015-04-08 | 广东中轻枫泰生化科技有限公司 | Preparation method of low-viscosity quaternary ammonium cationic starch |
Non-Patent Citations (1)
| Title |
|---|
| 严瑞瑄: "《水溶性高分子产品手册 第1版》", 31 October 2003, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474188A (en) * | 2017-08-04 | 2017-12-15 | 河北省科学院能源研究所 | A kind of cationic starch flocculant and preparation method thereof |
| CN108101180A (en) * | 2017-12-29 | 2018-06-01 | 天津德清科技有限公司 | A kind of sewage-treating agent and preparation method thereof |
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Application publication date: 20150930 |