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Production process for producing chitin and efficiently removing pigments

A production process and technology for chitin, which is applied in the field of production technology for producing chitin with high efficiency for depigmentation, can solve the problems of prolonging the production cycle of chitin and slow depigmentation, so as to shorten the decolorization time, reduce the production cycle and improve the production efficiency. Effect

Inactive Publication Date: 2020-09-04
QUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing chitin production process, the oxidative decolorization is usually carried out at room temperature, resulting in a slower depigmentation speed and more time for depigmentation, which greatly prolongs the production cycle of chitin

Method used

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  • Production process for producing chitin and efficiently removing pigments

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A kind of production technology of producing chitin efficient depigmentation, described production technology comprises the steps:

[0025] (1) Cleaning, prepare an appropriate amount of shrimp shells or crab shells, soak the shrimp shells or crab shells in clean water, and then use a brush to scrub. After scrubbing, pour off the water and repeat the above steps.

[0026] (2) Pickling and softening. The shrimp shells or crab shells treated in step (1) are soaked in dilute hydrochloric acid according to a certain ratio, and soaked for a certain period of time until no bubbles are generated.

[0027] (3) Alkaline washing and neutralization, putting the shrimp shells or crab shells treated in step (2) into a pot, and putting an appropriate amount of sodium hydroxide solution into the pot, and then boiling.

[0028] (4) Oxidative decolorization, transfer the processed shrimp shells or crab shells in step (3) to the bucket, then put water and potassium permanganate decoloriz...

Embodiment 2

[0041] A kind of production technology of producing chitin efficient depigmentation, described production technology comprises the steps:

[0042] (1) Cleaning, prepare an appropriate amount of shrimp shells or crab shells, soak the shrimp shells or crab shells in clean water, and then use a brush to scrub. After scrubbing, pour off the water and repeat the above steps.

[0043] (2) Pickling and softening. The shrimp shells or crab shells treated in step (1) are soaked in dilute hydrochloric acid according to a certain ratio, and soaked for a certain period of time until no bubbles are generated.

[0044] (3) Alkaline washing and neutralization, putting the shrimp shells or crab shells treated in step (2) into a pot, and putting an appropriate amount of sodium hydroxide solution into the pot, and then boiling.

[0045] (4) Oxidative decolorization, transfer the processed shrimp shells or crab shells in step (3) to the bucket, then put water and potassium permanganate decoloriz...

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Abstract

The invention discloses a production process for producing chitin and efficiently removing pigments. The production process comprises the following steps: cleaning, preparing a proper amount of shrimpshells or crab shells, soaking the shrimp shells or crab shells in clear water, brushing with a brush, pouring out water after brushing, and repeating the above steps; pickling and softening: soakingthe treated shrimp shells or crab shells in diluted hydrochloric acid according to a certain proportion for a period of time until no bubbles are generated; alkali washing and neutralizing: putting the treated shrimp shells or crab shells into a pot, putting a sodium hydroxide solution with a proper concentration into the pot, and then boiling; the production process has the beneficial effects that when the raw materials are subjected to oxidative decoloration, the raw materials and reagents are heated, so that the effect of shortening the decoloration time can be achieved, the production period of chitin is shortened, and the production efficiency of chitin is improved.

Description

technical field [0001] The invention relates to the technical field of chitin production technology, in particular to a high-efficiency depigmentation production technology for chitin production. Background technique [0002] Chitin (C8H13O5N)n, also known as chitin or chitin, was discovered by French scholar Braqueno in 1811 and extracted from crustacean shells by Ogier in 1823. Chitin is light beige to white, soluble in concentrated hydrochloric acid , phosphoric acid, sulfuric acid or acetic acid, insoluble in alkali and other organic solvents, and insoluble in water, chitosan, a deacetylated derivative of chitin, is insoluble in water, but soluble in some dilute acids. [0003] In the existing chitin production process, the oxidative decolorization is usually carried out at room temperature, resulting in a slower depigmentation speed and more time for depigmentation, which greatly prolongs the production cycle of chitin . Contents of the invention [0004] The object...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/08
CPCC08B37/0003C08B37/003
Inventor 李炜祺徐军飞周寅何继中邓冲曹从文
Owner QUZHOU UNIV
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