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 th

Method used

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  • Process for preparing stress-resistance seaweed fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] Take 100 kilograms of air-dried artificially cultivated kelp and rinse with water to remove impurities and foreign objects. Use a chopper to cut the dried kelp into 2-3cm pieces, add 900 kg of fresh water, and adjust the pH to 8.5-9.0 with NaOH. After continuously stirring and soaking for 24 hours, use a reduced-pressure concentration evaporator to concentrate, and continuously 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 high-temperature salt has been continuously precipitated at this time. After the centrifuge removes the high-temperature salt, the mother liquor of the centrifuge is cooled, and dry solids are continuously precipitated. Collect the dry solids and reserve the extraction mother liquor for later use.

[0031] 10 kg of chopped fresh seaweed is added with 4 kg of ethanol solution with a weight concen...

Example Embodiment

[0034] Example 2

[0035] Take 80 kilograms of dried kelp and 20 kilograms of naturally-growing green algae (Ulva or Enteromorpha) to directly remove impurities and foreign objects. Use a chopper to cut the dried kelp into small pieces of 2-3cm. The green algae do not need to be cut to keep the whole plant. Add 750 kilograms of fresh water to the chopped dried kelp, add NaOH to adjust the pH ≈ 8.5-9.0, 12 hours later, add green algae and 150 kilograms of fresh water to adjust the pH to the original level. After stirring continuously for 12 hours, it was concentrated with a reduced-pressure concentration evaporator. When the specific gravity of the concentrated solution is 1.2-1.3, the concentrated liquid is directly pumped into the centrifuge from the discharge port of the evaporator, because the high temperature salt is slowly precipitated at this time. Use a centrifuge to remove the high temperature salt. The centrifugal mother liquor is cooled, and as the cooling mother liquor ...

Example Embodiment

[0038] Example 3

[0039] Take 100 kg of naturally grown green algae, rinse with water to remove impurities and foreign substances, add 1000 kg of fresh water, and adjust the pH to 8.8 with NaOH. After continuously stirring and soaking for 10 hours, use a reduced-pressure concentration evaporator to concentrate, and continuously 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 mother liquor of the centrifuge is cooled, and dry solids are continuously precipitated. Collect the dry solids and reserve the extraction 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 then broken into a crusher.

[0041] After stirring...

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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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