Algal polysaccharide modified urea and preparation method thereof

A technology for modifying urea and seaweed polysaccharides, which is applied in fertilizer mixtures, fertilization devices, and applications. It can solve the problems of high-pressure ring equipment and hydrolysis towers, which are easy to corrode, backward in technology, and high in consumption. It can eliminate hardening, improve soil, and prolong absorption. rate effect

Active Publication Date: 2012-11-07
BEIJING LEILI MARINE BIOINDUSTRY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aqueous solution full circulation method is backward in technology and high in consumption. The carbon dioxide stripping method and the ammonia stripping method have certain advantages, but at the same time, there are also defects that the high-pressure ring equipment and the hydrolysis tower are easy to corrode.

Method used

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  • Algal polysaccharide modified urea and preparation method thereof
  • Algal polysaccharide modified urea and preparation method thereof
  • Algal polysaccharide modified urea and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Raw material name Weight percentage (%) Raw material name Weight percentage (%)

[0048] Seaweed Extract 0.5 Guromannan 0.1

[0049] Fucoidan 0.01 Seaweed Active 0.001

[0050] Seaweed Antibiotic 0.001 Urea 99.388

[0051] The raw material seaweed extract obtaining method:

[0052] 1) Crush the seaweed raw material to 1×1cm;

[0053] 2) Add 2 kg of cellulase and 1 kg of pectinase to 997 kg of water;

[0054] 3) Add 1,000 kg of the compound enzyme solution obtained in step 2) to 200 kg of seaweed obtained in step 1) to form a mixture, adjust the pH value to 7.8, and perform enzymolysis at 45°C for 4 hours while stirring;

[0055] 4) Add 2 kg of alkaline protease to 1000 kg of enzymolysis solution obtained in step 3), and perform enzymolysis at 50°C for 3 hours while stirring;

[0056] 5) Cool the mixture obtained in step 4) to room temperature, centrifuge, and save the supernatant for later use.

[0057] Raw seaweed active substance acquisition method:

[0058] 1)...

Embodiment 2

[0071] Raw material name Weight percentage (%) Raw material name Weight percentage (%)

[0072] Seaweed Extract 0.8 Guromannan 0.15

[0073] Fucoidan 0.015 Seaweed Actives 0.0015

[0074] Seaweed Antibiotic 0.0015 Urea 99.032

[0075] The raw material seaweed extract obtaining method:

[0076] 1) Crush the seaweed raw material to 2×2cm;

[0077] 2) Add 1 kg of cellulase and 2 kg of pectinase to 997 kg of water;

[0078] 3) Add 1,000 kg of the compound enzyme solution obtained in step 2) to 200 kg of seaweed obtained in step 1) to form a mixture, adjust the pH value to 7.9, and perform enzymatic hydrolysis at 45°C for 3 hours while stirring;

[0079] 4) Add 3 kg of alkaline protease to 1000 kg of enzymolysis solution obtained in step 3), and perform enzymolysis at 50°C for 3 hours while stirring;

[0080] 5) Cool the mixture obtained in step 4) to room temperature, centrifuge, and save the supernatant for later use.

[0081] Raw seaweed active substance acquisition method...

Embodiment 3

[0095] Raw material name Weight percentage (%) Raw material name Weight percentage (%)

[0096] Seaweed Extract 1.2 Guromannan 0.08

[0097] Fucoidan 0.008 Seaweed Actives 0.0008

[0098] Seaweed Antibiotic 0.0008 Urea 98.71

[0099] The raw material seaweed extract obtaining method:

[0100] 1) Crush the seaweed raw material to 3×3cm;

[0101] 2) Add 2 kg of cellulase and 2 kg of pectinase to 996 kg of water;

[0102] 3) Add 1,000 kg of the compound enzyme solution obtained in step 2) to 200 kg of seaweed obtained in step 1) to form a mixture, adjust the pH value to 8.0, and perform enzymolysis at 45°C for 5 hours while stirring;

[0103] 4) Add 4 kg of alkaline protease to 1000 kg of enzymolysis solution obtained in step 3), and perform enzymolysis at 50°C for 4 hours under stirring;

[0104] 5) Cool the mixture obtained in step 4) to room temperature, centrifuge, and save the supernatant for later use.

[0105] Raw seaweed active substance acquisition method:

[0106...

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Abstract

The invention provides algal polysaccharide modified urea. The algal polysaccharide modified urea comprises the following components in percentage by weight: 0.1 to 1.2 percent of algae extract, 0.015 to 0.18 percent of Gulur manna polysaccharide, 0.002 to 0.017 percent of fucoidin, 0.0001 to 0.0015 percent of algal active matter, 0.0001 to 0.0015 percent of algal antibiont, 98.6 to 99.7 percent of urea, and 46.01 to 46.53 percent of nitrogen. The invention also provides a preparation method for the algal polysaccharide modified urea. The algal polysaccharide modified urea can provide nitrogen required by crops, improve soil, improve the crumb structure of the soil, eliminate hardening, play a certain role in fertilizer conservation and slow release, prolong the fertilizer efficiency of the urea and enhance absorption of the crops so as to improve the yield and the quality of the crops, fruits and vegetables.

Description

technical field [0001] The invention belongs to the technical improvement field of urea production. Specifically, the invention relates to a seaweed polysaccharide modified urea and a preparation method thereof. Background technique [0002] Urea, also known as carbonamide and carbonamide, is an organic compound composed of carbon, nitrogen, oxygen and hydrogen, also known as urea (same as urine). Its chemical formula is CON 2 h 4 ,CO(NH2) 2 or CN 2 h 4 O, the international non-proprietary drug name is Carbamide. Urea is synthesized in the liver of mammals and is a nitrogenous metabolite excreted by mammals. This metabolic process is called the urea cycle. [0003] The appearance of urea is usually white crystal or powder, and it is the first organic compound obtained by artificially synthesizing inorganic substances. Urea is generally used as nitrogen fertilizer for plants. It is the fertilizer with the highest nitrogen content in nitrogen fertilizer and is a neutra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/08C05G3/80C05G3/90
Inventor 汤洁严国富王为璋
Owner BEIJING LEILI MARINE BIOINDUSTRY INC
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