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Urea formaldehyde-ammonium nitrate liquid fertilizer as well as preparation method and application thereof

A technology of liquid fertilizer and urea-formaldehyde, applied in ammonium nitrate fertilizer, application, liquid fertilizer, etc., can solve the problems of high soil requirements and cost, short fertilizer effect, easy crystallization, etc., to extend the fertilizer effect cycle, improve utilization rate, and meet nutritional needs Effect

Inactive Publication Date: 2020-04-03
SHENZHEN BATIAN ECOTYPIC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a kind of urea-formaldehyde-ammonium nitrate liquid fertilizer and preparation method thereof, to solve the deficiencies such as easy crystallization, short fertilizer effect or high soil requirements and cost to solve the existing liquid fertilizer technical problem

Method used

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  • Urea formaldehyde-ammonium nitrate liquid fertilizer as well as preparation method and application thereof
  • Urea formaldehyde-ammonium nitrate liquid fertilizer as well as preparation method and application thereof
  • Urea formaldehyde-ammonium nitrate liquid fertilizer as well as preparation method and application thereof

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preparation example Construction

[0029] On the other hand, on the basis of the urea-formaldehyde-ammonium nitrate liquid fertilizer described above, the embodiment of the present invention also provides a preparation method of the urea-formaldehyde-ammonium nitrate liquid fertilizer. The preparation method technology of described urea-formaldehyde-ammonium nitrate liquid fertilizer is as figure 1 As shown, it includes the following steps:

[0030] S01: After the first mixing treatment of formaldehyde, urea and ammonia, the pH value of the formed mixed solution is adjusted to 7.0-10.5, and then heat treatment is performed to perform urea-formaldehyde reaction treatment to obtain urea-formaldehyde slurry;

[0031] S02: maintaining the temperature of the urea-formaldehyde slurry, and performing a second mixing treatment on the urea-formaldehyde slurry and the preheated ammonium nitrate in proportion to obtain a urea-formaldehyde-ammonium nitrate liquid fertilizer.

[0032] Wherein, the formaldehyde, urea and am...

Embodiment 1

[0054] The embodiment of the present invention provides a urea-formaldehyde-ammonium nitrate liquid fertilizer and a preparation method thereof. Described urea formaldehyde-ammonium nitrate liquid fertilizer comprises water, with described urea formaldehyde-ammonium nitrate liquid fertilizer total mass concentration being 100%, it also comprises the composition of following mass percentage:

[0055]

[0056] The preparation method of described urea formaldehyde-ammonium nitrate liquid fertilizer is as figure 1 with figure 2 As shown, it specifically includes the following steps:

[0057] S11: Add formaldehyde solution, small granule urea, and liquid ammonia to the 1# reactor at a molar ratio of 1:0.5~5:0.1~1, adjust the pH value to 7.0~10.5 with an appropriate amount of NaOH, and adjust the heating and heat preservation device of the reactor Keep the temperature of the 1# reactor at 60-95°C, and continue to react for 60 minutes under the constant stirring of the agitator...

Embodiment 2

[0063] The embodiment of the present invention provides a urea-formaldehyde-ammonium nitrate liquid fertilizer and a preparation method thereof. Described urea-formaldehyde-ammonium nitrate liquid fertilizer comprises water, and with described urea-formaldehyde-ammonium nitrate liquid fertilizer total concentration being 100%, it also comprises the composition of following percentage:

[0064]

[0065] The preparation method of described urea formaldehyde-ammonium nitrate liquid fertilizer is as figure 1 with figure 2 As shown, it specifically includes the following steps:

[0066] S11: Add formaldehyde solution, small granule urea, and liquid ammonia to the 1# reactor at a molar ratio of 1:0.5~5:0.1~1, adjust the pH value to 7.0~10.5 with an appropriate amount of NaOH, and adjust the heating and heat preservation device of the reactor Keep the temperature of the 1# reactor at 60-95°C, and continue to react for 50 minutes under the constant stirring of the agitator;

[...

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Abstract

The invention provides a urea formaldehyde-ammonium nitrate liquid fertilizer as well as a preparation method and application thereof. The urea formaldehyde-ammonium nitrate liquid fertilizer comprises a solvent, and further comprises the following components in percentage by mass based on 100% of the total mass concentration of the urea formaldehyde-ammonium nitrate liquid fertilizer: 1-5% of nitrate nitrogen, 3-6% of ammonium nitrogen, 3-15% of amide nitrogen and 5-20% of urea formaldehyde nitrogen. According to the urea formaldehyde-ammonium nitrate liquid fertilizer, through the synergistic effect of multiple nitrogen nutrient components, the fertilizer efficiency period is effectively prolonged, and the utilization rate of the urea formaldehyde-ammonium nitrate liquid fertilizer is increased. And the urea formaldehyde-ammonium nitrate liquid fertilizer also has the characteristic of low crystallization temperature and is convenient to use. The preparation method of the urea formaldehyde-ammonium nitrate liquid fertilizer has the advantages that the process conditions are easy to control, the conditions are mild, the stable performance of the prepared urea formaldehyde-ammoniumnitrate liquid fertilizer can be effectively ensured, the preparation efficiency is effectively improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a urea-formaldehyde-ammonium nitrate liquid fertilizer and a preparation method and application thereof. Background technique [0002] In recent years, the problem of unreasonable use of chemical fertilizers has become more and more prominent, which has brought adverse effects on the ecological environment. To this end, the Ministry of Agriculture and Rural Affairs organized the implementation of major projects such as soil testing and formula fertilization, zero growth of chemical fertilizers, and water and fertilizer integration to promote scientific fertilization techniques and improve fertilizer utilization rates, and achieved remarkable results. [0003] As a new type of fertilizer, liquid fertilizer has the characteristics of flexible formula, low production cost, no pollution, good water solubility, less impurities, fast fertilizer efficiency, high utilization rate, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G5/20C05C13/00C05G1/00
CPCC05C1/00
Inventor 刘进波张建军刘学文张广杰王维超
Owner SHENZHEN BATIAN ECOTYPIC ENG
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