Production process and production device of urea formaldehyde slow-release synergistic fertilizer

A urea-formaldehyde slow-release and production process technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve problems such as large unit usage, low fertilizer nitrogen content, and unsatisfactory fertilization, and achieve low production costs, high particle strength, The effect of low moisture in the product

Inactive Publication Date: 2014-10-22
云中英
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural organic fertilizers, such as sewage slurry, animal waste fertilizer, manure, etc., can basically meet the above requiremen

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

[0022] A kind of production technology of urea-formaldehyde slow-release synergistic fertilizer, comprises the following steps:

[0023] (1) Preparation of urea-formaldehyde solution: After adding 10Kg of water into the urea-formaldehyde reaction tank, heat it to a temperature of 90°C, then send the urea to the silo by the urea elevator, measure and add 15Kg of formaldehyde to the urea-formaldehyde reaction tank at the same time through the belt scale The reaction is carried out inside, the reaction temperature is kept at 90°C, and the weight ratio of formaldehyde to urea is 3:5 to generate a urea-formaldehyde solution;

[0024] (2) Granulation: The urea-formaldehyde solution obtained in step (1) is transported to the buffer tank by the urea-formaldehyde pump, and then sent to the granulator after metering, and is mixed with the materials transported from the compound fertilizer batching device including urea and phosphoric acid. Ammonium, potassium chloride, fillers, etc., th...

Embodiment 2

[0027] A kind of equipment for the production process of urea-formaldehyde slow-release synergistic fertilizer in Example 1, comprising a urea-formaldehyde reaction tank, the urea-formaldehyde reaction tank is connected to the formaldehyde storage tank through a formaldehyde pump, and the urea-formaldehyde reaction tank is also connected to the urea silo The urea silo is provided with a bucket elevator, and the urea-formaldehyde reaction tank is connected with a buffer tank through a urea-formaldehyde pump, and the buffer tank is connected with a granulator, a dryer, a cooling machine, a screening machine, Coating machine and packaging machine, a urea-formaldehyde pump is also connected between the buffer tank and the granulator, and the urea-formaldehyde reaction tank is also connected with the granulator, and the formaldehyde pump and the urea-formaldehyde pump are both An electromagnetic flowmeter is provided, and a urea-formaldehyde nozzle is arranged in the granulator.

...

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 production process and a production device of a urea formaldehyde slow-release synergistic fertilizer. The process includes urea formaldehyde solution preparation, granulation, post-processing and other steps. The device includes a urea formaldehyde reaction tank; the urea formaldehyde reaction tank is connected with a buffer tank through a urea formaldehyde pump, and the buffer tank is successively connected with a granulator, a dryer, a cooler, a screening machine, a coating machine and a packaging machine. The production process and the production device have the advantages that the process material is high in ball forming rate, and the liquid phase is less, so that the drying load is relieved, the productivity is improved, and energy consumption is reduced; and the urea formaldehyde slow-release synergistic fertilizer obtained through the process can meet nutrient demands of crops at different growth periods with one time fertilization, has quick-acting, intermediate-acting and long-acting nitrogen nutrients, can achieve the purpose of sustained or controlled release, is complete in nutrients, high in fertilizer efficiency, obvious in yield increasing effect and stable and lasting in fertilizer efficiency, has a soil improving effect, and also has the advantages of low water content, high particle strength, green environmental protection, and no residue.

Description

technical field [0001] The invention relates to a fertilizer production process, in particular to a production process and production equipment of a urea-formaldehyde slow-release synergistic fertilizer, belonging to the field of fertilizer production processes. Background technique [0002] Over the past 50 to 60 years, fertilizer researchers have worked hard to develop a family of fertilizers that slowly release the nitrogen they contain as the crop grows. At the same time, when a large amount of nitrogen fertilizer is used, it can avoid the loss of crop seedlings and nitrogen nutrients, and can fertilize safely, efficiently, scientifically and rationally. Natural organic fertilizers, such as sewage slurry, animal waste fertilizer, manure, etc., can basically meet the above requirements, but the nitrogen content in this fertilizer is low, and the unit usage is correspondingly large, so fertilization is not ideal. In addition, other solid nitrogen fertilizers include urea-...

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): C05G3/08C05G3/90
Inventor 云中英王恒涛范秀凯王言亮刘启前时钰淇
Owner 云中英
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