Mobile starch and dry-process preparation method thereof

A fluidity and starch technology, applied in the field of dry preparation of fluid starch, can solve problems such as affecting the coating effect and activation index, achieve excellent angle of repose and activation index, promote esterification and cross-linking reactions, and improve the reaction The effect of efficiency

Active Publication Date: 2012-10-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main principle of preparing fluid starch by this method is to physically coat the starch granules, such as uneven mixing will affect the coating effect and physical and chemical indicators such as activation index.

Method used

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  • Mobile starch and dry-process preparation method thereof
  • Mobile starch and dry-process preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) In terms of parts by mass, 100 parts of ordinary cornstarch were heated and dried in a dry process reactor. The heating temperature was programmed from room temperature to 100°C, and the programmed temperature rise rate was 5°C per minute. The moisture content was controlled at 3%, cooled to room temperature; the dry reactor is a pressure-resistant stainless steel reactor with a jacket, which is heated by steam and cooled by tap water.

[0030] (2) Spray 1 mass part of sodium sulfate solution with a mass percentage concentration of 20% into the above starch, mix well, then spray 3 mass parts of a sodium hydroxide solution with a mass percentage concentration of 3%, mix well, and Stir at a speed of 180 rpm for 30 minutes, and heat up to 80°C to heat and dry the starch, control its moisture content to 5%, and then cool to room temperature;

[0031] (3) Spray 1 mass part of octenyl succinic anhydride into the starch in the dry process reactor, and stir and mix evenly a...

Embodiment 2

[0045] (1) In terms of parts by mass, 100 parts of tapioca starch were heated and dried in a dry reactor, the heating temperature was programmed from room temperature to 100°C, and the programmed temperature increase rate was 10°C per minute. Control its moisture content to 5%, and cool to room temperature; the dry reactor is a pressure-resistant stainless steel reactor with a jacket, which is heated by steam and cooled by tap water.

[0046] (2) Spray 3 parts by mass of sodium sulfate solution with a mass percentage concentration of 20% into the above starch, mix evenly, then spray 6 parts by mass of sodium hydroxide solution with a mass percentage concentration of 4%, mix well, and Stir at a speed of 180 rpm for 50 minutes, and heat up to 80°C to heat and dry the starch, control its moisture content to 8%, and then cool to room temperature;

[0047] (3) Spray 2 parts by mass of octenyl succinic anhydride into the starch in the dry process reactor, and stir and mix evenly at ...

Embodiment 3

[0051] (1) In terms of parts by mass, 100 parts of potato starch were heated and dried in a dry process reactor, the heating temperature was programmed from room temperature to 100 °C, and the programmed temperature increase rate was 8 °C per minute, and the moisture content was controlled at 10 °C. %, cooled to room temperature; the dry reactor is a jacketed pressure-resistant stainless steel reactor, which is heated by steam and cooled by tap water.

[0052] (2) Spray 5 parts by mass of sodium sulfate solution with a mass percentage concentration of 25% into the above starch, mix well, and then spray 10 parts by mass of sodium carbonate solution with a mass percentage concentration of 2% at 150 rpm Stir and mix for 60 minutes, and heat up to 80°C to dry the starch, control its moisture content to 15%, and then cool to room temperature.

[0053] (3) Spray 5 parts by mass of dodecenyl succinic anhydride into the starch in the dry process reactor, stir and mix evenly at 150 rpm...

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Abstract

The invention discloses mobile starch and a dry-process preparation method thereof. The method comprises the following steps of: heating and drying the starch in a dry-process reactor, and cooling to room temperature; uniformly mixing the dried starch with the salt and alkali solution in the dry-process reactor respectively, heating and drying the starch, and cooling to room temperature; spraying alkenyl succinic anhydride into the dry-process reactor; closing the reactor; keeping stirring to react for 1-4 hours at 30-50 DEG C, and then continuing reacting for 30-100 minutes at 80-120 DEG C; spraying a hydrochloric acid solution into a reaction tank so that the starch is acid; adjusting and controlling the moisture content of the starch; spraying a high-valence ion salt solution to react, and heating to continue the reaction; and finally grinding and sieving to obtain the high-performance mobile starch. The obtained product has low production cost and good hydrophobicity and mobility, and is widely applied to the fields of chemicals for daily use, printing, oil exploitation, agriculture and the like.

Description

technical field [0001] The invention belongs to the field of starch modification and its deep processing, in particular to a dry preparation method of fluid starch. Background technique [0002] Starch is a natural renewable resource with the characteristics of biodegradability, no environmental pollution, and low price. Natural starch and its modified products are widely used in food, chemical, pharmaceutical and other fields. Starch granules contain a large number of hydroxyl groups, which are highly hydrophilic and poor in fluidity. Introducing hydrophobic groups into starch molecules and shielding hydrophilic hydroxyl groups in an appropriate way can significantly improve the fluidity of starch, and the products are widely used in papermaking, food, printing, cosmetics, oil exploration and other fields. [0003] At present, the preparation technology of fluid starch mostly adopts wet process, which is to disperse starch in water to form starch emulsion system, and carry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/04C08B30/06C08J3/24
Inventor 黄强扶雄罗发兴何小维
Owner SOUTH CHINA UNIV OF TECH
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