CN101775161A - Process for producing modified starch by using microwave far infrared method - Google Patents
Process for producing modified starch by using microwave far infrared method Download PDFInfo
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- CN101775161A CN101775161A CN200910058109A CN200910058109A CN101775161A CN 101775161 A CN101775161 A CN 101775161A CN 200910058109 A CN200910058109 A CN 200910058109A CN 200910058109 A CN200910058109 A CN 200910058109A CN 101775161 A CN101775161 A CN 101775161A
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- far infrared
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Abstract
The invention discloses a process for producing modified starch by using a microwave far infrared method, comprising the following steps of: uniformly mixing starch with an oxidant, an acid/base catalyst, an etherifying agent and a esterifying agent, placing the mixture into microwave far infrared integration equipment for heating reaction, carrying out neutralization reaction and physical synergism, and finally sieving, weighting and packing. The invention has the advantages of high heating reaction speed, thorough reaction, good film-forming property, high bonding, enhancing and retaining ratio, low cost, wide application range, low energy consumption, no pollution to environment and scale production. The modified starch produced by the invention can be widely used as a binder, an intensifier, a stabilizer, a densifier and the like to be used in the industries of paper making, spinning, food, medical treatment, plastic, well drilling, building materials, daily chemicals and the like.
Description
Technical field
The present invention relates to a kind of production technique of modified starch, more particularly is to utilize microwave far infrared method to produce the technology of modified starch.
Background technology
Modified starch is the ative starch that extracts from grain, potato class, as W-Gum, tapioca (flour), yam starch, sweet potato starch etc. as base-material, prescription adds chemical adjuvant by a certain percentage, under specific humidity, temperature, time, carry out chemical reaction, its use properties is changed, be transformed into the product of various different purposes and specification.Modified starch is widely used in industries such as papermaking, weaving, food, medicine, plastics, drilling well, building materials, daily use chemicals as binding agent, toughener, stablizer, viscosifying agent, slurry and auxiliary agent.It is as being widely used in the functional starting material of all trades and professions, for reducing production costs, improve the quality of products and class, development product innovation playing crucial effect.The modified starch production technique has wet method, solvent method, dry method and semidrying, and is current, is based on wet process technique in China.Its advantage is a fully mixing of chemical reagent and starch, constant product quality, and production control is easy.But it also has obvious defects, and promptly the yield of product is low, and the water of productive use amount is big, and sewage is difficult, and energy consumption is big, changes the low thereby cost height of auxiliary material transformation efficiency.The technology of existing domestic use heat-conducting oil pipes heating and hot blast heating dry production modified starch has then overcome the part shortcoming of wet process technique, but because type of heating remains convection current and the conduction heating mode is main, thermo-efficiency is still not high, the inequality of being heated of ative starch and chemical reagent in addition, cause reacting harmonious poor, quality product is difficult to obtain assurance.So still there is high flow rate in the heating process of present domestic employing, the problem of low output.At present, the domestic microwave production modified starch that utilizes only rests on testing laboratory, the production of inreal formation large-scale industrial.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of technology of producing modified starch with microwave far infrared method is provided, it is with low cost, stability and high efficiency.
Purpose of the present invention is achieved through the following technical solutions:
A kind of technology of producing modified starch with microwave far infrared method, it comprises the following steps:
1), mixes
At first ative starch is sent in the mixing tank, start agitator and will be diluted to a certain amount of oxygenant, acid/alkaline catalysts, etherifying agent, esterifying agent etc. and spray into and mix 10～15min with starch in the mixing tank, then material is sent in the high-speed mixer material thorough mixing is even;
2), reacting by heating
Well-mixed material is sent in the feeding mouth of microwave far infrared integrated equipment, regulated bed thickness 3～6cm, 50～150 ℃ of temperature of reaction, reaction times 10～30min, determine that by outside measurement method indexs such as the moisture content of product and viscosity reach the specified requirement value;
3), neutralization reaction
When the starchy material of reacting by heating is delivered to the temperature for the treatment of starch in the composite machine of cooling in batches and dropped to 40 ℃, spray into neutralization reagent, the pH value that makes starch system is to 7.01.0;
4), physics synergy
The modified starch product of cooling having been finished neutralization reaction in the composite machine adds a certain amount of powder characteristic improving agent, and thorough mixing 10～20min again satisfies the various special service requirements of user to modified starch to improve the various application performances of product, to reach;
5), screening, weighing, packing
Through the above-mentioned product that mixes, by the vibratory screening apparatus of aperture 0.15mm, screening back weighing and bagging promptly obtains product of the present invention.
Described an acidic catalyst is one or more mixtures in nitric acid, sulfuric acid, oxalic acid, hydrochloric acid, phosphoric acid, the oxalic acid;
Described basic catalyst is one or more mixtures in potassium hydroxide, sodium hydroxide, calcium hydroxide, yellow soda ash, (partially) water glass;
Described etherifying agent is one or more mixtures in chloroethyl diethyl ammonium, 3-chloro-2 hydroxypropyl-trimethyl ammonium chlorides, 2,3 epoxypropyl trimethylammonium chloride ammoniums, Monochloro Acetic Acid sodium, the quaternary ammonium epoxide;
Described esterifying agent is one or more mixtures in SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate dibasic, acetic anhydride, tripoly phosphate sodium STPP, the vinyl acetate between to for plastic;
Described oxygenant is one or more mixtures in benzoyl peroxide, sodium peroxide, hydrogen peroxide, Potassium Persulphate, potassium permanganate, the ammonium persulphate;
Described neutralization reagent is one or more mixtures in potassium hydroxide, sodium hydroxide, calcium hydroxide, yellow soda ash, water glass, Starso, sodium metaaluminate, triethanol ammonium, nitric acid, sulfuric acid, oxalic acid, hydrochloric acid, phosphoric acid, the oxalic acid;
Described powder characteristic improving agent is one or more mixtures in yellow prussiate of potash, sodium silicoaluminate, tricalcium phosphate, silicon-dioxide, Microcrystalline Cellulose, oxalic acid, the urea.
The present invention compared with prior art has following advantage:
1, the normal hot blast heating of using is compared with the heat-conducting oil pipes heating means in the present invention and the dry production modified starch technology, because of the type of transmission that heats changes, change radiation into by conduction and transmission of heat by convection and give birth to heat, so thermo-efficiency height of this technology, heat temperature raising speed is fast, change auxilliary reagent transformation efficiency height, production efficiency also improves greatly; Compare with high-efficiency turbulent flow formula vacuum dry process reaction device technology, the invention belongs to continuously-running duty, simple in equipment, reduced investment, the production efficiency height, simple to operate, quality product is controlled easily;
2, the present invention adopts to mix, depolymerization, etherificate, oxidizing reaction, neutralization reaction, physics synergy, the technological process that serializations such as the packing of sieving are produced has further reduced modified starch products production cost, has promoted product specification, enlarged the use range of product, had tangible economic and social benefit at aspects such as improving water resource environment, cut down the consumption of energy and preserve the ecological environment;
3, microwave far infrared integrated equipment of the present invention is the patent that the present patent application people has applied for, application number is: 200820065181.6, name is called " modified starch reacting by heating device ", the ultimate principle of its device is to utilize microwave to the continuous change frequency of aqueous starch polar molecule with per second tens00000000 times, the production HF oscillation causes the relative movement between the molecule, and produce similar friction, collision, squeezing action, the place maximum system energy is increased and be rapidly heated, utilize the strong radiation function of far infrared electromagnetic simultaneously, to the further insulating synergistic in whole microwave cavity space, make the whole process can be efficiently, finish the sex change of starch fast under the condition smoothly, changed the normal mode that traditional modified starch production only singly relies on transmission of heat by convection, effectively improved the thermo-efficiency of reaction, make and originally want several hrs, even tens hours reaction process shortens to 10～30min and can finish;
4, the product produced of the present invention has good film-forming property, bonding, enhancing, retention height, low, the good combination property of price, can large-scale production, thus improve the competitive capacity of product widely.
Embodiment
Below by several more detailed specific embodiments, the technical scheme and the technology of invention are done one and proved absolutely, but not as to the present invention's restriction, in these embodiments, except as otherwise noted, umber and per-cent are all to come commodity starch.
Embodiment 1:
Ative starch is added in the mixing tank for 1000 parts, start agitator motor, spray adds 25 parts of 10% dilute hydrochloric acid and 20 parts of 40% hydrogen peroxide, normal temperature condition stirs 10～15min down, behind the high-speed mixer thorough mixing, send into the feeding mouth place of microwave far infrared integrated equipment then, the adjusting bed thickness is 3-6cm, open microwave far infrared integrated equipment, regulate 50～150 ℃ of material temperature, keep 10～30min, after indexs such as detection moisture content and viscosity reach prescribed value, again this material is put into the composite machine of cooling when treating that temperature drops to below 40 ℃, spray into and add 1 part of Microcrystalline Cellulose again after 10% potassium hydroxide solution 20 parts (including 5 parts of methyl alcohol) mixes, thorough mixing 10～20min obtains the product that the present invention produces after the packing of sieving.
Embodiment 2:
Ative starch is added in the mixing tank for 1000 parts, start agitator motor, spray adds 18 parts of 15% dilute hydrochloric acid, 10 parts of 12% ammonium persulphates, normal temperature condition stirs down 10～15min, and subsequent handling is identical with embodiment 1, sprays into to add 0.8 part of silicon-dioxide again after 10% sodium hydroxide solution 25 parts (containing 5 parts of methyl alcohol) mixes again, thorough mixing 10～20min obtains the product that the present invention produces after the packing of sieving.
Embodiment 3:
Ative starch is added in the mixing tank for 1000 parts, start and stir, spray adds 15 parts of 20% dilute sulphuric acids then, 10 parts of 10% hydrogen peroxide, stirring at normal temperature 10～15min, subsequent handling is identical with embodiment 1, spray into 15 parts of 25% sodium silicate solutions again, add 0.8 part of silicon-dioxide after mixing again, thorough mixing 10～20min obtains the product that the present invention produces after the packing of sieving.
The resulting modified starch of above embodiment is mainly used in the interpolation of Thistle board, and it is as shown in the table for its salient features (product standard of using with domestic certain well-known Thistle board manufacturing enterprise is example)
Form 1:
The result shows: the salient features of Thistle board starch of the present invention meets or exceeds Thistle board and uses enterprise's specified standards and performance requriements, and through producer's result of use ideal.With regard to the Thistle board of the present invention's production is starch specialized, belong to domestic initiation, requirement and performance and actual needs according to product, can easily adjust the proportioning of material, change the working parameter and the processing parameter of microwave far infrared integrated equipment, the Thistle board of preparing excellent performance simply is starch specialized.
Embodiment 4:
Ative starch is added in the mixing tank for 1000 parts, start the powder potassium hydroxide that agitator motor adds 1%-2%, 50% 3-chloro-2 hydroxypropyl-trimethyl ammonium chlorides, normal temperature condition stirs 10～15min down, subsequent handling is identical with embodiment 1, spray into 2 parts of the hydrochloric acid diluting solns of 0.8%-1.25% amount again, thorough mixing 10～20min obtains the product that the present invention produces after the packing of sieving.
Embodiment 5:
Ative starch is added in the mixing tank for 1000 parts, the composite catalyst that the water glass of startup agitator motor adding 1%-4% or yellow soda ash, sodium metaaluminate are formed, 2 of 69% content of 3%-20% consumption, 3 epoxypropyl trimethylammonium chloride ammonium solutions, stirring at normal temperature 10～15min, subsequent handling is identical with embodiment 1, sprays into 15 parts of the hydrochloric acid diluting solns of 0.8%-1.2% amount again, thorough mixing 10～20min obtains the product that the present invention produces after the packing of sieving.
The resulting modified starch of above embodiment is mainly used in the slurry of paper industry and adds, and it is as shown in the table for its salient features (product standard of using with domestic certain well-known paper enterprise is example)
Form 2:
The result shows: cationic starch of the present invention is through producer's result of use ideal.Indexs such as the enhancing of paper, filler retention, surface property reach requirement fully, with regard to the present invention's cationic starch, belong to domestic initiation, requirement and performance and actual needs according to product, can easily adjust the proportioning of material, change the working parameter and the processing parameter of microwave far infrared integrated equipment, prepare tertiary amine, the quaternary ammonium cation starch of excellent performance simply.
Embodiment 6:
Ative starch is added in the mixing tank for 1000 parts, start agitator motor, the sulfuric acid stirring at normal temperature 10～15min that adds 0.1%-0.5%, subsequent handling is identical with embodiment 1, spray into 15 parts of the potassium hydroxide diluting solns of 0.1%-0.5% amount again, thorough mixing 10～20min obtains the product that the present invention produces after the packing of sieving.
Embodiment 7:
Ative starch is added in the mixing tank for 1000 parts, start the SODIUM PHOSPHATE, MONOBASIC of agitator motor adding 3%-8% or the urea of tri-polyphosphate and 2%-5% and form compound interpolation auxiliary agent, stirring at normal temperature 10～15min, through air-flow predrying, make moisture reach 5%-10% after, send into microwave far infrared integrated equipment, subsequent handling is identical with embodiment 1, sprays into the aqueous solution of 10 deals again, with equilibrium water content to prescribed value, through thorough mixing 10～20min, after the packing of sieving, obtain the product that the present invention produces
Embodiment 8:
Ative starch is added in the mixing tank for 1000 parts, start agitator motor and add 3-5% powdered sodium hydroxide and the ethanolic soln that sprays into 20% content of 2% consumption, stirring at normal temperature 10～15min, the powdery sodium chloroacetate that adds 5%-8% again, stir 20-30min, subsequent handling is identical with embodiment 1, sprays into the oxalic acid of 0.5%-1.3% again, thorough mixing 10～20min obtains the product that the present invention produces after the packing of sieving.
The resulting modified starch of above embodiment is mainly used in the warp sizing of textile industry, and it is as shown in the table for its salient features (product standard with domestic certain well-known spinning sizing agent manufacturing enterprise is an example)
Form 3:
The result shows: several modified starches of the present invention are through check, each characteristic index, the check data that the slurries size film property about different denaturation starch of performance and Southern Yangtze University slurry inspection center is studied is identical substantially, and after using, the part sizing producer starching of Sichuan Province and Chongqing City thinks that all product is satisfactory for result, each performance and weaving efficiency reach requirement fully, with regard to modified starch is used in the weaving of the present invention's production, belong to domestic initiation, requirement and performance and actual needs according to product, can easily adjust the proportioning of material, change the working parameter and the processing parameter of microwave far infrared integrated equipment, prepare the sizing modified starch of excellent performance simply.
Claims (8)
1. a technology of producing modified starch with microwave far infrared method is characterized in that: comprise the following steps:
1), mixes
At first ative starch is sent in the mixing tank, start agitator and will be diluted to a certain amount of oxygenant, acid/alkaline catalysts, etherifying agent, esterifying agent etc. and spray into and mix 10～15min with starch in the mixing tank, then material is sent in the high-speed mixer material thorough mixing is even;
2), reacting by heating
Well-mixed material is sent in the feeding mouth of microwave far infrared integrated equipment, regulated bed thickness 3～6cm, 50～150 ℃ of temperature of reaction, reaction times 10～30min;
3), neutralization reaction
When the starchy material of reacting by heating is delivered to the temperature for the treatment of starch in the composite machine of cooling in batches and dropped to 40 ℃, spray into neutralization reagent, make pH value to 7.0 ± 1.0 of starch system;
4), physics synergy
The modified starch product of having finished neutralization reaction in the composite machine of cooling is added a certain amount of powder characteristic improving agent, thorough mixing 10～20min again;
5), screening, weighing, packing
Through the above-mentioned product that mixes, by the vibratory screening apparatus of aperture 0.15mm, packing promptly obtains the product that the present invention produces after the screening weighing.
2. technology of producing modified starch with microwave far infrared method according to claim 1, it is characterized in that: an acidic catalyst is one or more mixtures in nitric acid, sulfuric acid, oxalic acid, hydrochloric acid, phosphoric acid, the oxalic acid.
3. technology of producing modified starch with microwave far infrared method according to claim 1, it is characterized in that: described basic catalyst is one or more mixtures in potassium hydroxide, sodium hydroxide, calcium hydroxide, yellow soda ash, (partially) water glass.
4. technology of producing modified starch with microwave far infrared method according to claim 1, it is characterized in that: described etherifying agent is one or more mixtures in chloroethyl diethyl ammonium, 3-chloro-2 hydroxypropyl-trimethyl ammonium chlorides, 2,3 epoxypropyl trimethylammonium chloride ammoniums, Monochloro Acetic Acid sodium, the quaternary ammonium epoxide.
5. technology of producing modified starch with microwave far infrared method according to claim 1, it is characterized in that: described esterifying agent is one or more mixtures in SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate dibasic, acetic anhydride, tripoly phosphate sodium STPP, the vinyl acetate between to for plastic.
6. technology of producing modified starch with microwave far infrared method according to claim 1, it is characterized in that: described oxygenant is one or more mixtures in benzoyl peroxide, sodium peroxide, hydrogen peroxide, Potassium Persulphate, potassium permanganate, the ammonium persulphate.
7. technology of producing modified starch with microwave far infrared method according to claim 1, it is characterized in that: described neutralization reagent is one or more mixtures in potassium hydroxide, sodium hydroxide, calcium hydroxide, yellow soda ash, water glass, Starso, sodium metaaluminate, triethanol ammonium, nitric acid, sulfuric acid, oxalic acid, hydrochloric acid, phosphoric acid, the oxalic acid.
8. technology of producing modified starch with microwave far infrared method according to claim 1, it is characterized in that: described powder characteristic improving agent is one or more mixtures in yellow prussiate of potash, sodium silicoaluminate, tricalcium phosphate, silicon-dioxide, Microcrystalline Cellulose, oxalic acid, the urea.
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| CN200910058109A CN101775161A (en) | 2009-01-12 | 2009-01-12 | Process for producing modified starch by using microwave far infrared method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102134282A (en) * | 2011-01-07 | 2011-07-27 | 华南理工大学 | Composite modified starch of hydroxypropyl and alkenyl succinic acid and preparation method and application thereof |
| CN102587208A (en) * | 2011-12-31 | 2012-07-18 | 杭州纸友科技有限公司 | Method for manufacturing anti-interference recycled paper reinforcing agent |
| CN103012605A (en) * | 2012-12-11 | 2013-04-03 | 广西民族大学 | Method for preparing high-retention environmental-friendly one-step double-modified starch |
| CN103087204A (en) * | 2011-10-28 | 2013-05-08 | 上海同化新材料科技有限公司 | Micro-powder cellulose preparation method |
| CN104262495A (en) * | 2014-08-27 | 2015-01-07 | 殷霞 | Gypsum plaster board modified starch and production method thereof |
| CN106046184A (en) * | 2016-06-25 | 2016-10-26 | 张莘蔓 | Preparation method of environment-friendly potato-containing modified starch |
| CN106149462A (en) * | 2015-04-01 | 2016-11-23 | 上海东升新材料有限公司 | A kind of preparation method being coated with solid starch adhesive and products thereof |
| CN106699910A (en) * | 2016-12-16 | 2017-05-24 | 天峨县全盛蜂业科技有限公司 | Preparation method of corn denatured starch |
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2009
- 2009-01-12 CN CN200910058109A patent/CN101775161A/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134282B (en) * | 2011-01-07 | 2013-03-20 | 华南理工大学 | Composite modified starch of hydroxypropyl and alkenyl succinic acid and preparation method and application thereof |
| CN102134282A (en) * | 2011-01-07 | 2011-07-27 | 华南理工大学 | Composite modified starch of hydroxypropyl and alkenyl succinic acid and preparation method and application thereof |
| CN103087204B (en) * | 2011-10-28 | 2015-07-01 | 上海同化新材料科技有限公司 | Micro-powder cellulose preparation method |
| CN103087204A (en) * | 2011-10-28 | 2013-05-08 | 上海同化新材料科技有限公司 | Micro-powder cellulose preparation method |
| CN102587208A (en) * | 2011-12-31 | 2012-07-18 | 杭州纸友科技有限公司 | Method for manufacturing anti-interference recycled paper reinforcing agent |
| CN102587208B (en) * | 2011-12-31 | 2014-07-09 | 杭州纸友科技有限公司 | Method for manufacturing anti-interference recycled paper reinforcing agent |
| CN103012605A (en) * | 2012-12-11 | 2013-04-03 | 广西民族大学 | Method for preparing high-retention environmental-friendly one-step double-modified starch |
| CN104262495A (en) * | 2014-08-27 | 2015-01-07 | 殷霞 | Gypsum plaster board modified starch and production method thereof |
| CN106149462A (en) * | 2015-04-01 | 2016-11-23 | 上海东升新材料有限公司 | A kind of preparation method being coated with solid starch adhesive and products thereof |
| CN106149462B (en) * | 2015-04-01 | 2018-03-13 | 上海东升新材料有限公司 | It is a kind of to be coated with preparation method of solid starch adhesive and products thereof |
| CN106046184A (en) * | 2016-06-25 | 2016-10-26 | 张莘蔓 | Preparation method of environment-friendly potato-containing modified starch |
| CN106699910A (en) * | 2016-12-16 | 2017-05-24 | 天峨县全盛蜂业科技有限公司 | Preparation method of corn denatured starch |
| CN106699910B (en) * | 2016-12-16 | 2019-10-25 | 安徽金玉米农业科技开发有限公司 | A kind of preparation method of modified corn starch |
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Open date: 20100714 |