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Spherical urea-aldehyde condensate fertilizers

A technology of condensate and urea-formaldehyde, which is applied in the direction of fertilizer mixture, urea compound fertilizer, solid/semi-solid fertilizer, etc., can solve the problems of increasing production cost, complexity, and materials that cannot be used as fertilizers

Pending Publication Date: 2021-04-16
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these processes are complex and most of the material coming out of the reaction vessel cannot be used as fertilizer and needs to be reintroduced into the production process
These processes add additional complexity, may only produce products at low yields that do not require reintroduction, and increase production costs

Method used

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  • Spherical urea-aldehyde condensate fertilizers
  • Spherical urea-aldehyde condensate fertilizers
  • Spherical urea-aldehyde condensate fertilizers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The method for making spherical urea-formaldehyde condensate fertilizer

[0085] The granulation of methylene urea-isobutylene diurea (MU-IBDU) fertilizer is done by pelletizing the wet MU-IBDU mixture or extruding the mixture first and then pelletizing or pelletizing the wet MU-IBDU mixture Achieved.

[0086] Spheronizer - Briefly, granulation of MU-IBDU powder was carried out in a disc spheronizer (Multi Bowl Spheronizer, 250 mm, manufactured by Caleva). Wet the dry MU-IBDU powder with 20% to 25% water and add to the pelletizer. The spheroidizer was operated at an air pressure of 0.5 bar and a speed of 2500 rpm for 3 minutes to 10 minutes using a cross grid plate with a 3 mm pattern to obtain the desired granules. The MU-IBDU particles were allowed to aggregate and form spherical particles. Without being bound by theory, it is believed that the continuous collision of the wet material with the walls and friction plates of the spheroidizer in the presence of air flo...

Embodiment 2

[0105] Example 2 (Prophetic Example)

[0106] sample analysis

[0107] The properties of the fertilizers disclosed herein can be tested. The crush strength of some samples can be measured using a crush strength analyzer to determine the strength of a fertilizer.

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Abstract

Fertilizers that contain urea-aldehyde condensates. The fertilizer can be spherical and can be formed using a granulation and / or spheronization technique and optionally can be an extruded fertilizer that is spheronized.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 701987, filed July 23, 2018, the entire contents of which are incorporated herein by reference in their entirety. [0003] Background of the invention [0004] A.Technical field [0005] The present invention generally relates to fertilizers comprising urea-formaldehyde condensates. The fertilizer can be spherical and can be formed using granulation (eg, pan granulation and / or drum granulation) or spheronization techniques, and the spheroidized fertilizer can optionally be extruded. [0006] B. Related technical description [0007] To increase crop yields and meet the growing demands of an increasing population, more fertilizers are used in agriculture. Use fertilizers that contain nitrogen to support healthy plant growth and photosynthesis. Urea (CH 4 N 2 O) is a nitrogen-containing compound and is widely used as a nitrog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05C9/02
CPCC05C9/02C05G5/12C05G3/30
Inventor 拉贾马莱斯沃拉玛·科里佩利萨蒂什·布尔拉拉达·阿查纳特沙米克·古普塔
Owner SABIC GLOBAL TECH BV
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