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Improved method of traditional sodium alginate production process

A technology of sodium alginate and production process, applied in the field of seaweed chemical industry, can solve problems such as more consumption, and achieve the effects of reducing sewage charges, reducing COD emissions, and reducing direct production costs

Active Publication Date: 2015-03-25
SHANDONG JIEJING GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the original sieve and silk filtration process uses a large amount of water for dilution, so the concentration of sodium alginate in the solution is only about 1.2%. Subsequent production requires more energy and chemical reagents for concentration and chemical conversion.

Method used

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  • Improved method of traditional sodium alginate production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 1000 kg of brown algae such as light dry kelp, Ascophyllum nodosum, blackened Leisong algae or bark algae as raw materials, and add 10000m 3 Soak in tap water for 1-2 hours. Use the pump (or use the kelp pump commonly used in the actual work of those skilled in the art) to pump the soaked raw materials to the twisted cage to filter out the water and chop them, then enter the press mill (sea sodium / HZM-100L) and adjust the grinding disc The gap is 0.5-2.0mm, and the screw speed of the press mill is adjusted at 2000rpm for 2min. The crushed seaweed is sent to the crusher (HC1600-90-300KW) for crushing for 10 minutes, then transferred to the buffer tank (ZS1-200) for 1.5 hours, and then transferred to the digestion tank to add Na with a concentration of 2.% (W / V) 2 CO 3 , 1000L and heated to 75°C for 6 hours. Transfer to a refining tank (gap ≥ 1mm) and grind for 2 minutes (kelp does not need to be refined, other macroalgae grind for 1-3 times), and finally transfe...

Embodiment 2

[0019] Weigh 1000 kg of brown algae such as light dry kelp, Ascophyllum nodosum, blackened Leisong algae or bark algae as raw materials, and add 10000m 3 Soak in tap water for 1-2 hours. Pump the soaked raw materials to the twisted cage to filter out the water through the giant algae pump, then chop them, and then enter the press mill (sea sodium / HZM-100L) and adjust the gap between the mill discs to 0.5-2.0mm, and adjust the screw speed of the press mill at 2000rpm. 2min. The crushed seaweed is sent to the crusher (HC1600-90-300KW) for crushing for 10 minutes, then transferred to the buffer tank (ZS1-200) for 1.5 hours, and then transferred to the digestion tank to add Na with a concentration of 2.% (W / V) 2 CO 3 , 1000L and heated to 75°C for 6 hours. Transfer to a refining tank (gap ≥ 1mm) for grinding for 2 minutes, and finally transfer to a stainless steel pot with a stirring and discharge port, add 130T tap water at room temperature and continue stirring until uniform....

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Abstract

The invention relates to the field of algae chemical engineering, in particular to a three-stage separation technology for improvement on the traditional production process of sodium alginate. The method is as below: adding 170-190 tons of tap water in per ton of algae digestive juice for dilution; conducting slag and liquid separation on the diluted digestive juice by a three-stage separation technology; dissolving gas in the digestive juice subjected to three-stage separation; conducting foaming separation on the glue solution subjected to gas dissolution, calcifying under the condition of pH value being 6-9, decalcifying, dehydrating and drying to obtain the sodium alginate. The invention adopts a three-stage separation technology including rotary separation, filtration and spiral sedimentation to separate the fluid suspension after digestion by algae. Solid effect increases from 15% to 58%, the diameter of separation particles increases from no less than 1 mm in bolting-silk filter to no more than 0.05 mm, water consumption is saved by 300 ton for per ton of sodium alginate, the concentration of sodium alginate after dilution increases from 1.2% to 1.75%, the production cost for per ton of products reduces by 650 yuan, and COD emission is reduced to 154 ton.

Description

technical field [0001] The invention relates to the field of seaweed chemical industry, in particular to a method for improving the traditional sodium alginate production process by three-stage separation technology. Background technique [0002] my country's seaweed chemical industry started in the late 1960s. After decades of development, my country's current annual output of sodium alginate has reached more than 30,000 tons, becoming the world's largest producer of seaweed chemical products, of which more than 80% of the production is concentrated in Shandong Province, seaweed chemical industry has digested more than 70% of the seaweed production in Shandong Province, and its development is related to the sustainable development of the entire seaweed industry in Shandong Province. [0003] However, in recent years, due to the continuous decline in the quality and output of kelp products, the price of kelp has continued to rise. At the same time, the traditional production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04
Inventor 林成彬滕怀华王斌商金艳
Owner SHANDONG JIEJING GROUP CORP
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