CN1406942A

CN1406942A - Phytic acid preparation

Info

Publication number: CN1406942A
Application number: CN 01130963
Authority: CN
Inventors: 朱群乔
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-29
Filing date: 2001-08-29
Publication date: 2003-04-02

Abstract

A process for preparing the phytic acid from rich husks, wheat bran, or corn features that the raw material is immersed in hydrochloric acid. Its advantages are simple process, low cost, and high output and quality.

Description

The manufacture method of phytic acid

Technical field

The present invention is the manufacture method of phytic acid.

Background technology

Phytic acid is a kind of good oxidation inhibitor, no toxic agent.It is widely used for food, detergents and cosmetic, chemical industry, medicine.Field such as oil and light and textile industries.Traditional manufacturing phytic acid method is: use rice bran, wheat bran or corn are made raw material, transfer PR value with sulfuric acid, again through soaking, and manufacturing procedures such as neutralization filtration, separation, displacement, concentration extraction and getting at last.

This traditional manufacture method exists following shortcoming: 1. soak with sulfuric acid, the intensification value is little.Especially at low temperature season, must heat. to keep the acidleach temperature (C, otherwise influence output that is not less than 60.2. sulfuric acid is strong oxidizer.Meet air and carbonic acid gas and can produce violent oxidizing reaction, thereby reduced acid number, influenced output.3. need to use large quantities of lime, cause in the phytic acid ca calcium-magnesium content excessive, thereby influenced the refining workload in later stage, also increased energy-output ratio, increased cost.4. because of the need heating, cause the thick camphor tree acid of a part in heat-processed, to be evaporated, also reduced output.5. some auxiliary material belongs to goods and materials in short supply, the buying difficulty.6. dilute luxuriant and rich with fragrance spit of fland with oxalic acid, its shortcoming increases energy expenditure for needing heating, replaces not thoroughly, and refuse is many, and efficient is low.7. produce filtrate with centrifugal separation, its shortcoming is: because speed is too fast, cause the filtrate muddiness, strengthened the precision work workload in later stage, the waste material that has also influenced quality 8. gained of phytic acid can not fully utilize.

Summary of the invention

The objective of the invention is to overcome above-mentioned tradition, to produce the phytic acid method existing, shortcoming, a kind of new method of producing phytic acid is proposed, concrete technology is as follows:

Rice bran or wheat bran being thrown in people's acidleach cylinder, added quantitative water, add hydrochloric acid again, transfer pH value, is 2, acidleach about 4 hours, the temperature of surveying, decide acidleach water, and normal circumstances should be about 6 ℃ of intensifications.Filter then, in the filtrate input cylinder, add saturated milk of lime again, the accent pH value is 3.5-5, transfer pH value to be with saturated caustic soda soln again?5, treat the Fei Tingdingting post precipitation.Take out clear water with siphonage, change ordinary water washing, when the upper water five colors are tasteless till.When Fei Ting becomes pure white look, add the pure water washed twice again, then dehydration.Drop in the displacement container in luxuriant and rich with fragrance spit of fland after will dewatering again, and adding hydrochloric acid accent pH value is 2 (require quick and precisely, make Fei Ting be the clear water sample), filters then, promptly gets thick phytic acid.

Advantage of the present invention is: 1. change traditional sulfuric acid infusion method into the hydrochloric acid infusion method, can save the operation of heating of low temperature season, thereby save the energy, reduce steam output, increase output.2. this law is diluted luxuriant and rich with fragrance spit of fland with hydrochloric acid, has overcome with oxalic acid to dilute the shortcoming that bring in luxuriant and rich with fragrance spit of fland.3. hydrochloric acid belongs to monoprotic acid, oxygen-free own, and oxidation susceptibility is extremely low, thereby, the acid number height of maintenance, output is also high.4. owing to the acid number height, the molecular structure of raw material will be destroyed, and promote organic acid to ooze out. increased output.5. this law lime consumption is few, and environmental pollution is little, and can reduce the workload of post-production, improves the quality of product.6. this law changes centrifugal separation into and hangs the filter method, has overcome the filtrate muddiness, and later stage precision work workload is big.The shortcoming that quality product is low, and saved the energy.7. the spent caustic water of present method gained can fully utilize.

In a word, the method for producing phytic acid proposed by the invention is compared with traditional method, and it is simple to have technology. and operation is few, and cost is low, and equipment is simple, the output height.Good and the waste material of quality such as can fully utilize at advantage.

Embodiment:

(1) acidleach, neutralization:

Get 100 kilograms in rice bran or wheat bran, put in people's acidleach cylinder. add 500 kilograms in water, transferring pH value with 6 kilograms of hydrochloric acid is 2 (transferring 1-3 minute), and acidleach is filtered about 4 hours then again, and filtrate must reach transparent degree.

With standby in the filtrate cylinder of falling people.Add 400 kilograms in water in filter residue, add 2 kilograms of hydrochloric acid again, transferring pH value is 2, and acidleach refiltered about 4 hours, and filtrate must reach transparent degree.Abandon filter residue (can make feed) then.Again twice filtrate is combined (amounting to about 600 kilograms), transferring pH value with saturated limewater or milk of lime is 3.5, transferring the F11 value with saturated caustic soda soln again is 7.5, the clear liquid on siphon upper strata after 5 hours changes the ordinary water washing, the water on siphon upper strata after 5 hours, change water more once, colourless, tasteless up to supernatant liquid, when transparent till, the luxuriant and rich with fragrance spit of fland of gained is pure white look.Through hanging filter, dehydration can obtain Fei Ting then.

(2) displacement

Add 2 kilograms of hydrochloric acid at Fei Tingnei, transferring pH value is 2. to require quick and precisely, when treating that Fei Ting is the clear water sample, hangs filter, promptly gets thick phytic acid.

(3) decolouring

In thick phytic acid, add gac.Decolour, the weight of gac is 2% of thick phytic acid weight, heats then to 60 ℃, keeps constant temperature 30 minutes.Cooled off again,, promptly obtained the thick phytic acid of water white transparency shape with vacuum decompression method suction filtration.

(4) exchange

The thick phytic acid of decolouring is placed in the exchange column, exchanges, reach outward appearance and get final product for the water white transparency shape with resin.

(5) concentrate

Adopt the way of vacuum decompression to concentrate the phytic acid that exchanged, being concentrated to concentration is that 70Z gets final product, and is the emblem yellow with the outward appearance, and transparent, sediment-free is as the criterion, and this is the phytic acid of producing.

Claims

1, a kind of rice bran of using.Wheat bran or corn are made the method for producing phytic acid of raw material, it is characterized in that raw material salt acid soak.

2, as the said phytic acid manufacture method of claim 1, it is characterized in that diluting luxuriant and rich with fragrance spit of fland with hydrochloric acid.

3,, it is characterized in that hanging luxuriant and rich with fragrance spit of fland of filter and thick phytic acid with hanging the filter method as claim 1 and 2 said phytic acid manufacture method.

4, as the said thick phytic acid of claim 3, it is characterized in that it being decoloured with gac.

5, as the thick phytic acid of the said decolouring of claim 4, it is characterized in that it being exchanged with resin.

6, as the said thick phytic acid of claim 5, it is characterized in that it being concentrated with the vacuum decompression method through exchange.