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Method for preparing fertilizer by extracting triacontanol from vegetable pitch

A technology of plant asphalt and triacontanol, applied in organic fertilizers, liquid fertilizers, fertilizer mixtures, etc., can solve the problems of restricting the large-scale production and use of triacontanol, high production costs, etc., and achieve abundant reserves and low equipment requirements , cheap effect

Inactive Publication Date: 2017-12-01
YANTAI GOODLY BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned triacontanol preparation methods all involve technologies such as ultrasound, molecular distillation, microwave, etc., and the production cost is high, which limits the large-scale production and use of triacontanol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Mix 500L of plant asphalt, 50L of sodium alkoxide solution, and 50L of methanol evenly, maintain the reaction temperature at 45-50°C, and stir for 3 hours;

[0028] 2) Step 1) The temperature of the reaction liquid is rapidly cooled to below 5°C, and the cooling time is no more than 2 hours, and the filter cake is obtained by filtering with a diaphragm filter press. The weight loss of the filter cake on drying does not exceed 6%, and the weight of the filter cake is about 158kg;

[0029] 3) The filter cake is dissolved by adding 8 times the volume of n-hexane, and about 1100 L of supernatant liquid is separated in the extraction tank;

[0030] 4) Step 3) add 366L of acetone to the clear liquid, cool down to 5°C gradually, the cooling rate is 10°C / h, stop stirring and maintain the temperature for 10h, and filter to obtain 31kg of crude product crystals;

[0031] 5) Step 4) Dissolve the crystals in hot ethanol, add 62kg of urea and stir until dissolved, gradually cool ...

Embodiment 2

[0035] 1) Mix 2000L of plant asphalt, 200L of sodium alkoxide solution, and 200L of methanol evenly, maintain the reaction temperature at 45-50°C, and stir for 3 hours;

[0036] 2) Step 1) The temperature of the reaction liquid is cooled to below 5°C extremely quickly, and the cooling time is no more than 2 hours, and the filter cake is obtained by filtering with a diaphragm filter press. The weight loss of the filter cake on drying does not exceed 6%, and the weight of the filter cake is about 705kg;

[0037] 3) The filter cake is dissolved by adding 8 times the volume of n-hexane, and about 5600L of the supernatant is separated in the extraction tank;

[0038] 4) In step 3), add 1800L acetone to the clear liquid, cool down to 5°C gradually, and the cooling rate is 10°C / h, stop stirring and maintain the temperature for 10h, and filter to obtain 140kg of crude crystals;

[0039] 5) Step 4) Dissolve the crystals in hot ethanol, add 280kg of urea and stir until dissolved, gradua...

Embodiment 3

[0043] 1) Mix 1000L of plant asphalt, 100L of sodium alkoxide solution, and 100L of methanol evenly, maintain the reaction temperature at 45-50°C, and stir for 3 hours;

[0044] 2) Step 1) The temperature of the reaction liquid is rapidly cooled to below 5°C, and the cooling time is no more than 2 hours, and the filter cake is obtained by filtering with a diaphragm filter press. The weight loss of the filter cake on drying does not exceed 6%, and the weight of the filter cake is about 350kg;

[0045] 3) Add 8 times the volume of n-hexane to the filter cake to dissolve, and separate the supernatant liquid in the extraction tank to about 2800L;

[0046] 4) Step 3) add 930L acetone to the supernatant liquid, cool down to 5°C gradually, the cooling rate is 10°C / h, stop stirring and maintain the temperature for 10h, and filter to obtain 70kg of crude product crystals;

[0047] 5) Step 4) Dissolve the crystals in hot ethanol, add 140kg of urea and stir until dissolved, gradually coo...

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Abstract

The invention relates to a method for preparing a fertilizer by extracting triacontanol from vegetable pitch. The method comprises the following steps: 1) performing ester exchange reaction on the vegetable pitch under a strong base condition; 2) cooling, and filtering with a membrane filter press to obtain filter cakes; 3) adding n-hexane into the filter cakes for dissolving the filter cakes, and obtaining a clear solution through seperation; 4) adding a proper amount of acetone into the clear solution of step 3), performing gradient cooling, and collecting crystal; 5) dissolving the crystal into hot ethanol, adding urea, stirring the solution till the urea is dissolved, cooling and collecting urea crystal; and 6) dissolving the urea crystal into an aqueous solution, compounding other active matters, and filling, thus obtaining a crop nutrient solution. According to the method, the concentrated active ingredient is extracted from the vegetable pitch by two times of crystallization and compounded with other active matters, so that the fertilizer can remarkably promote the growth of crops, improve the stress resistance, and have a great application value.

Description

technical field [0001] The invention relates to a method for preparing crop nutrient solution derived from higher fatty alcohol of plant asphalt, and belongs to the technical field of fertilizer production. Background technique [0002] Vegetable asphalt, also known as black foot, is the leftovers left in the production process of fatty acid, oleic acid or fatty acid methyl ester. Fatty acid methyl esters are currently produced in large quantities in the world as "biodiesel", thus producing a large amount of vegetable pitch. Because vegetable asphalt is obtained through high-temperature distillation process, it has high viscosity, deep color, high ash content, and high flash point. The traditional method of using vegetable asphalt as boiler fuel can easily cause coking of the boiler, reduce the thermal efficiency of the boiler, and seriously reduce the service life of the boiler. . Therefore, it is of great significance to develop new uses of plant asphalt. [0003] Combi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05C9/00C05G5/20C05C11/00C05F11/00
Inventor 常晓菲常大勇高筱莎
Owner YANTAI GOODLY BIOTECH
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