Process for preparing stress-resistance seaweed fertilizer

A technology of seaweed fertilizer and seaweed, which is applied in the direction of organic fertilizers, etc., can solve the problems of packaging and transportation restrictions, increased transportation production costs, etc., and achieve the effect of increasing output ratio, increasing output, and increasing output

Inactive Publication Date: 2005-01-26
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the use of fresh seaweed as a raw material is limited by the production season, and the location of the manufacturer (the production site must be near the sea, otherwise the cost of transportation and production will increase, and it is impossible to form large-scale production), the product is liquid, There are certain restrictions on packaging and transportation

Method used

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  • Process for preparing stress-resistance seaweed fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 100 kg of dried artificially cultured kelp, rinse with water to remove impurities and foreign matter. Cut the dried kelp into small pieces of 2-3CM with a shredder, add 900 kg of fresh water, and adjust the pH to 8.5-9.0 with NaOH. After stirring and soaking for 24 hours, use a vacuum concentration evaporator to concentrate, and constantly check the specific gravity with a hydrometer. When the specific gravity is 1.2-1.3, the concentrated liquid enters the centrifuge directly from the discharge port of the evaporator, because at this time, high-temperature salt has been continuously precipitated. After the centrifuge removes the high-temperature salt, the centrifuged mother liquor is cooled, and dry solids are continuously precipitated. Collect the dry solids and reserve the extracted mother liquor for later use.

[0031] 10 kg of chopped fresh seaweed is added with 4 kg of ethanol solution with a weight concentration of 95%, stirred and crushed by a crusher.

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Embodiment 2

[0035] Take 80 kg of dried kelp and 20 kg of naturally growing green algae (ulva or enteromorpha), and directly remove impurities and foreign substances. Use a shredder to cut the dried kelp into small pieces of 2-3 cm. The green algae need not be cut into pieces to keep the whole tree. Add 750 kg of fresh water to the chopped dried kelp, add NaOH to adjust the pH ≈ 8.5-9.0, add green algae and 150 kg of fresh water after 12 hours, and adjust the pH to the original level. After stirring continuously for 12 hours, it was concentrated using a vacuum concentration evaporator. When the specific gravity of the solution is concentrated to 1.2-1.3, the concentrated solution is directly pumped into the centrifuge from the discharge port of the evaporator, because high-temperature salt has been slowly precipitated at this time. Use a centrifuge to remove hot salt. The centrifuged mother liquor is cooled, and dry solids are continuously precipitated in the cooled mother liquor. Colle...

Embodiment 3

[0039] Take 100 kg of naturally growing green algae, rinse with water to remove impurities and foreign matter, add 1000 kg of fresh water, and adjust the pH to 8.8 with NaOH. After stirring and soaking for 10 hours, use a vacuum concentration evaporator to concentrate, and constantly check the specific gravity with a hydrometer. When the specific gravity is 1.25, the concentrated liquid enters the centrifuge directly from the discharge port of the evaporator, because at this time, high-temperature salt has been continuously precipitated. After the centrifuge removes the high-temperature salt, the centrifuged mother liquor is cooled, and dry solids are continuously precipitated. Collect the dry solids and reserve the extracted mother liquor for later use.

[0040] 10 kg of chopped fresh seaweed is added with 5 kg of ethanol solution with a weight concentration of 95%, stirred and crushed by a crusher.

[0041] After 18 hours of constant stirring, centrifuge. Centrifuge the m...

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Abstract

The invention discloses a process for preparing stress-resistance seaweed fertilizer comprising the steps of, (1) airing seaweed, removing impurity substance, (2) charging fresh water, (3) agitating and steeping, decompression concentration, separating high temperature salt by centrifugal separation, (4) disintegrating concentration liquid with dried solid evolution, (5) charging 95% of ethanol into fresh seaweed, (6) squashing the algae, agitating, centrifuging and storing the liquid, (7) removing salt from the solution through compression, (8) cooling down, charging saturated diamino ammonium chromic thiocyanate solution, (9) collecting deposition, (10) mixing the compression liquid, dried solid substance and precipitate homogeneously, (11) spray drying.

Description

technical field [0001] The invention relates to seaweed chemistry, in particular to a preparation method of stress-resistant seaweed fertilizer. Background technique [0002] my country is a large agricultural country, and the use of chemical fertilizers ranks first in the world. The use of a large amount of chemical fertilizers has caused the deterioration of soil compaction (especially in the Hexi Corridor of my country) and the reduction of crop quality. In addition, my country is relatively short of water resources, and 380 million mu of farmland is dry and semi-arid. The common chemical fertilizers currently used in my country and the general liquid fertilizers abroad are not very specific to the above-mentioned agricultural characteristics of our country. Stress-resistant seaweed fertilizer is to use my country's existing rich seaweed resources to develop a kind of fertilizer that can increase crop yields, reduce soil compaction, and improve fertilizer production acco...

Claims

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Application Information

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IPC IPC(8): C05F11/00
Inventor 韩丽君范晓房国明袁毅娄清香牛荣丽李宪璀
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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