Preparation method of high-efficiency agricultural fertilizer

An agricultural and agricultural fertilizer technology, applied in the field of high-efficiency agricultural fertilizer preparation, can solve the problems of difficult to achieve large-scale industrial production, material hardening, material caking, etc., to reduce equipment investment, ensure liquidity, and avoid agglomeration. Effect

Inactive Publication Date: 2019-06-04
陈少武
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current technology is to add a catalyst at the initial stage of the reaction to speed up the polymerization reaction. Since the polymerized amino acid will come out of water during polymerization, plus the water brought in by

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Under normal pressure, add 50.0KgL-polypropylene into the kneader, the speed is 20 rpm, and the temperature is raised during the stirring process. After 10 minutes, the temperature of the material in the cavity reaches 180°C, and the temperature is kept at 180°C for 30 minutes. Part of the water evaporates. Then slowly add phosphoric acid (industrial grade) 0.5Kg in 60 minutes, stop heating after continuing constant temperature for 30 minutes, polymerization finishes. Cool the product, add water and potassium hydroxide for hydrolysis, and obtain a polyacrylamide solution with a solid content of 40%.

[0025] The detected molecular weight of polyacrylamide is 5000. The detection of the molecular weight of the products in the examples is all entrusted to the Energy Institute of the Hebei Academy of Sciences to carry out the detection, the same below.

Embodiment 2

[0027] Under normal pressure, add 50.0KgL-polypropylene into the tray dryer at a speed of 20 rpm. During the stirring process, the temperature rises at the same time. After 10 minutes, the temperature of the material in the cavity reaches 200°C. minute. Add 5Kg of phosphoric acid (industrial grade) at one time, stop heating after continuing to keep constant temperature for 120 minutes, and the polymerization ends. Cool the product, add water and sodium hydroxide for hydrolysis, and obtain a polyacrylamide solution with a solid content of 40%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a high-efficiency agricultural fertilizer, comprising the following steps: placing polypropylene into a polymerization reactor, directly stirring at normal pressure to polymerize polypropylene at the constant temperature of 160-270 DEG C for the holding time of 0.5-5 hours; adding a catalyst phosphoric acid into the material by a one-time addition orslow addition mode, continuously polymerizing in the polymerization reactor at normal pressure at the constant temperature of 160-230 DEG C for the holding time of 0.5-5 hours; and finally carrying out alkaline hydrolysis. The mass ratio of polypropylene to the catalyst phosphoric acid is 100:1-35, and the content of phosphoric acid is 85%. By the method, fluidity of the material can guaranteed,the caking problem of the material is avoided, and large-scale production can be realized. Phosphate ion in the catalyst is a nutrient element essential to growth of crops. There is no need to separate the catalyst, the washing process is saved, the production process is simplified, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to a method for preparing high-efficiency agricultural fertilizer. Background technique [0002] According to years of research by scientific workers, rational and economical fertilization is one of the important measures to increase crop yield and quality, so fertilization is the material basis for high yield and high quality. However, the low utilization rate of fertilizers has been perplexing the majority of agricultural workers. [0003] Polyacrylamide is a kind of amino acid polymer. In addition to the properties of water-soluble polymeric carboxylic acid, it also has the characteristics of easy degradation. type chemicals. Polyacrylamides with different molecular weights can be widely used in water treatment, fertilizer synergists, washing aids, cosmetics, hydrogels and other fields. As a fertilizer synergist, polyacrylamide has gradually been recognized by people for its excellent performance. [0004] The current techn...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08F110/06C08F8/12C05G3/00
Inventor 陈少武
Owner 陈少武
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap