CN101724084A

CN101724084A - Method capable of keeping whiteness of heated oxidized starch

Info

Publication number: CN101724084A
Application number: CN200910231255A
Authority: CN
Inventors: 张雷达
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-18
Filing date: 2009-12-18
Publication date: 2010-06-09

Abstract

The invention relates to a method capable of keeping whiteness of heated oxidized starch, which is characterized by comprising the following steps: 1, adding 1 to 20 parts of starch milk of which the concentration is 35 to 45 percent into a reaction tank, and keeping the temperature between 32 and 36 DEG C; 2, adding 1 to 10 parts of 2 to 4 percent sodium hypochlorite into the reaction tank, meanwhile continuously adding 1 to 10 parts of 2.5 percent sodium hydroxide solution into the reaction tank, and keeping the pH value between 8.8 and 9; 3, after the reaction is finished, adding 1 to 10 parts of sodium thiosulfate into the reaction tank according to the amount of the residual sodium hypochlorite to reduce the sodium hypochlorite which is not reacted; and 4, adding 1 to 10 parts of 5 percent hydrochloric acid into the solution to adjust the pH value to between 6 and 6.5, and meanwhile adding the hydrochloric acid into the solution to adjust the pH value of water for washing a cyclone to be between 6 and 6.5. The method has the advantages that the whiteness of the oxidized starch cannot be affected by the environment, the storage time is prolonged, the storage of the oxidized starch can be increased by modified starch production units according to the market, the continuous drive is kept, the frequency of replacing varieties is reduced, and the cost is greatly saved. In addition, the quantity of wastes can be reduced.

Description

The method that a kind of heated oxidized starch can whiteness keeps

Technical field

The invention discloses the method that a kind of heated oxidized starch in a kind of field of fine chemical can whiteness keeps.

Background technology

Present domestic Sumstar 190 production exists the shelf-time short, and especially summer temperature is when higher, and the Sumstar 190 whiteness drawback rapidly that descends can't increase tank farm stock, has had a strong impact on normal production.

Summary of the invention

The purpose of this invention is to provide the method that a kind of heated oxidized starch can whiteness keeps.Solution of the present invention is to it is characterized in that this method may further comprise the steps: 1, add starch milk 1-20 part in retort, starch concentration is at 35-45%, and temperature remains on 32-36 ℃; 2, in retort, add 2-4% clorox 1-10 part, constantly add 2.5% sodium hydroxide solution 1-10 part simultaneously,, keep pH value at 8.8-9; 3, add Sulfothiorine 1-10 part, the clorox that reduction does not react according to residue clorox amount after question response finishes; 4, add hydrochloric acid 1-10 part of 5% and regulate pH value, add hydrochloric acid simultaneously and regulate swirler bath water pH value to 6-6.5 to 6-6.5.

The invention has the beneficial effects as follows, can be so that the Sumstar 190 whiteness no longer be subjected to the influence of environment, the shelf-time prolongs, make the modified starch production unit can increase the tank farm stock of product according to market, keep continuity to drive, reduce the number of times of changing kind, save cost greatly.Can also reduce quantity scrapped in addition.

Embodiment

Embodiment one, 1, add 10 parts of starch milks in retort, starch concentration is 40%, and temperature remains on 35 ℃; 2, in retort, add 5 parts of 3% clorox, constantly add 5 parts of 2.5% sodium hydroxide solutions simultaneously,, keep pH value 8.8; 3, add 5 parts in Sulfothiorine, the clorox that reduction does not react according to residue clorox amount after question response finishes; 4, add 5% hydrochloric acid and regulate pH value to 6.2 for 5 parts, add hydrochloric acid simultaneously and regulate swirler bath water pH value to 6.2.

Embodiment two, 1, add 15 parts of starch milks in retort, starch concentration is 40%, and temperature remains on 36 ℃; 2, in retort, add 10 parts of 4% clorox, constantly add 10 parts of 2.5% sodium hydroxide solutions simultaneously,, keep pH value 9; 3, add 10 parts in Sulfothiorine, the clorox that reduction does not react according to residue clorox amount after question response finishes; 4, add 5% hydrochloric acid and regulate pH value to 6.5 for 10 parts, add hydrochloric acid simultaneously and regulate swirler bath water pH value to 6.5.

Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design concept of the present invention; the various improvement that those skilled in the art make technical scheme of the present invention; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection all is documented in claims.

Claims

1. the method that can whiteness keeps of a heated oxidized starch, it is characterized in that this method may further comprise the steps: 1, add starch milk 1-20 part in retort, starch concentration is at 35-45%, and temperature remains on 32-36 ℃; 2, in retort, add 2-4% clorox 1-10 part, constantly add 2.5% sodium hydroxide solution 1-10 part simultaneously,, keep pH value at 8.8-9; 3, add Sulfothiorine 1-10 part, the clorox that reduction does not react according to residue clorox amount after question response finishes; 4, add hydrochloric acid 1-10 part of 5% and regulate pH value, add hydrochloric acid simultaneously and regulate swirler bath water pH value to 6-6.5 to 6-6.5.