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Preparation method for slow-release fertilizer with polyphenol biomass as carrier

A slow-release fertilizer and biomass technology, which is applied to fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of low fertilizer utilization rate and waste of polyphenol biomass, and achieve the effects of low cost, low price and simple preparation process.

Active Publication Date: 2013-11-20
FUJIAN SHENGHUA AGRI SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low fertilizer utilization rate and serious waste of polyphenolic biomass in the prior art, the present invention provides a method for preparing slow-release fertilizer using polyphenolic biomass as a carrier. The raw materials of this method are easy to obtain, low in cost, and fully utilized The waste from agricultural and forestry planting is eliminated, and the production process is simple, economical and environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 100 kilograms of camellia oleifera husks crushed to more than 20 mesh, add 200 kilograms of formaldehyde solution with a mass concentration of 5%, adjust the pH of the solution to 3.5 with hydrochloric acid, and raise the temperature to 105°C for 60 minutes; stop heating and add 30 Kg of urea, 18 kg of calcium dihydrogen phosphate, 25 kg of potassium sulfate, stir evenly; add 15 kg of toluene diisocyanate, continue to stir for 45 minutes, pulverize the product to more than 50 mesh, and obtain the required slow-release fertilizer.

Embodiment 2

[0020] Weigh 100 kilograms of casuarina bark crushed to more than 20 mesh, add 200 kilograms of formaldehyde solution with a mass concentration of 5%, adjust the pH of the solution to 5 with hydrochloric acid, raise the temperature to 100°C and react for 90 minutes; stop heating and add 30 kilograms of urea, 18 kilograms of calcium dihydrogen phosphate, 25 kilograms of potassium sulfate, stir evenly; add 15 kilograms of toluene diisocyanate, continue stirring for 35 minutes, pulverize the product to more than 50 mesh, and obtain the required slow-release fertilizer.

Embodiment 3

[0022] Weigh 60 kilograms of black wattle bark and 40 kilograms of bayberry bark crushed to more than 20 meshes, add 200 kilograms of formaldehyde solution with a mass concentration of 3.5%, adjust the pH of the solution to 3 with hydrochloric acid, and increase the temperature to 80°C for 80 minutes ; Stop heating, add 30 kilograms of urea, 18 kilograms of calcium dihydrogen phosphate, 25 kilograms of potassium sulfate, and stir evenly; add 15 kilograms of hexamethylene diisocyanate, continue to stir for 45 minutes, crush the product to more than 50 mesh, and get the result The required slow-release fertilizer.

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PUM

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Abstract

The invention relates to a preparation method for a slow-release fertilizer with polyphenol biomass as a carrier, which is characterized by comprising the following steps of (1) smashing 100 weight parts of the polyphenol biomass to more than 20 meshes, adding the polyphenol biomass into 160-200 weight parts of formalin solution, adjusting a potential of hydrogen (pH) value of the solution to 3 to 5, and heating to 80 DEG C to 110 DEG C to react for 45-90 minutes; (2) adding 20-40 weight parts of urea, 15-10 weight parts of a phosphatic fertilizer and 25-30 weight parts of a potash fertilizer; (3) adding 10-30 weight parts of isocyanate, stirring for 30-60 minutes and evenly stirring, smashing products into more than 50 meshes and obtaining the required slow-release fertilizer. The preparation method has the advantages of (1) utilizing waste polyphenol biomass as a raw material, and being wide in source and low in cost; (2) being simple in preparation process and low in cost; and (3) utilizing waste to prepare the slow-release fertilizer, changing waste into value things, achieving full utilization of polyphenol biomass resources and reducing environmental pollution.

Description

Technical field [0001] The invention belongs to the technical field of slow-release fertilizer preparation, and particularly relates to a preparation method of a slow-release fertilizer using polyphenol biomass as a carrier. Background technique [0002] In the traditional fertilization method, the utilization rate of nitrogen fertilizer is only over 30%, the other third cause water pollution, and one third cause air pollution. In recent years, as the country attaches great importance to the environment, resources and ecology, the development of new energy-saving and emission-reducing fertilizers, improve fertilizer utilization, reduce environmental pollution caused by fertilization, reduce fertilization labor intensity, save fertilization costs, and increase farmers’ income has caused widespread The attention of science and technology workers. [0003] Polyphenolic biomass, such as casuarina bark, camellia husk, black wattle bark, bayberry bark, etc., comes from a wide range of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 卢玉栋吴宗华游瑞云卢书熔戴妙霞柯金炼
Owner FUJIAN SHENGHUA AGRI SCI & TECH DEV