Improved method of fresh kelp high-efficiency pretreatment and algin extraction processes for chemical engineering

An extraction process and a technology for alginate, applied in the field of alginate extraction process improvement, can solve the problems of difficulty in complete digestion, shorten the production time of alginate, kelp cell wall swelling and damage, etc., so as to reduce input cost, save input, and save time. Effect

Active Publication Date: 2010-12-08
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

During the digestion process, the digestion time is 3-4 hours, and most of the time is used to expand and destroy the cell wall of the kelp, which takes a long time and the degree of digestion is difficult to complet

Method used

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  • Improved method of fresh kelp high-efficiency pretreatment and algin extraction processes for chemical engineering
  • Improved method of fresh kelp high-efficiency pretreatment and algin extraction processes for chemical engineering
  • Improved method of fresh kelp high-efficiency pretreatment and algin extraction processes for chemical engineering

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Example Embodiment

[0026] Examples:

[0027] Choose about 3.5 tons of fresh kelp in the maturity period in July, cut it into 10-20cm kelp pieces through a vegetable cutting device, dissolve 25kg of calcium chloride in 0.7 tons of water, make up fixed liquid 1, and fix it according to the ratio of kelp pieces Liquid 1 is put into a large-scale tissue crushing equipment at a feed ratio of 5 to 1, and the tissue is crushed. After the kelp pieces are crushed into a slurry, they are sent to the pressing equipment for slag-liquid separation, and the kelp slag is about 1.4 tons after being crushed. Kelp tissue liquid 1 is about 2.7 tons, supplemented with 0.2 tons of water, 25kg calcium chloride is added, and fixed liquid 2 is prepared. After mixing with the primary pressed kelp residue, it is subjected to secondary pressing and separation to obtain 0.7 tons of kelp tissue fluid. 2 About 3.4 tons, of which 2.7 tons are used to extract iodine and mannitol, and 0.7 tons of kelp tissue fluid 2 is reserved.

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Abstract

The invention relates to an improved method of fresh kelp high-efficiency pretreatment and algin extraction processes for chemical engineering, which comprises the following steps of: cutting a fresh kelp into pieces, preparing a stationary liquid, carrying out fresh kelp tissue crushing and graded compression and separation, integrating fixation and digestion links, extracting algin, and comparing each item of data of the algin contemporaneously produced by the kelp. The high-efficiency pretreatment is carried out on the kelp as a raw material by adopting the method, so that the soaking link of the kelp as the raw material can be omitted, water resources are saved, the integration of the fixation and digestion links can be realized when in subsequent production, meanwhile, the fixation and digestion time is greatly shortened, and both the viscosity and the yield of a finally obtained algin product are not influenced. As an improved raw material pretreatment and production method, the invention can be popularized and applied in algin production, effectively improves the production efficiency, reduces the equipment input expenses and brings economic benefit.

Description

Technical field: [0001] The invention belongs to the chemical production technology of brown algae, and relates to a method for high-efficiency pretreatment of fresh kelp and improvement of alginate extraction process. Background technique: [0002] Alginate is a water-soluble high-viscosity colloid extracted from brown algae such as kelp by adding alkali. Including water-soluble ammonium, sodium, and potassium salts of alginic acid, and water-insoluble alginic acid and its metal salts with more than two valences such as calcium and iron. Generally, alginate mainly refers to sodium alginate. The raw materials for the production of alginate mainly include large brown algae such as giant algae, Ascophyllum nodosum, and kelp. In my country, kelp is mainly used as raw material to extract alginate, and its output is about 30,000 tons, most of which are used as printing paste and printing and dyeing auxiliaries in the textile industry. [0003] In my country, most algin manufact...

Claims

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Application Information

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IPC IPC(8): C08B37/04
Inventor 冷凯良苗钧魁李新宁卞永平许洋孙伟红邢丽红翟毓秀尚德荣王联珠李兆新谭志军
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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