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Microbial-friendly biomass fertilizer coating agent and preparation method thereof

A kind of fertilizer coating and friendly technology, which is applied in the direction of organic fertilizers, fertilizer mixtures, layered/coated fertilizers, etc., can solve the problems of insufficient nutrients, high operating costs, and increased operating costs in the later stage, so as to reduce hydrophobicity and biological Toxicity, environmental and microbial friendliness, effect of improving fertilizer use efficiency

Pending Publication Date: 2020-12-08
山佳经典(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) The utilization rate of fertilizer is low, such as nitrogen fertilizer such as urea, its utilization rate is only 30-40%, far below the world average level
[0004] 2) Short fertilizer efficiency, fast loss, and high operating costs; fertilizers are released and transformed quickly after being applied to the field, resulting in excess nutrients in the early stage and insufficient nutrients in the later stages, requiring frequent fertilization, wasting resources and increasing operating costs
[0005] 3) Environmental pollution is serious; frequent excessive fertilization causes a large amount of nutrients to seep into groundwater and enter rivers and lakes, seriously polluting water bodies, resulting in frequent occurrence of red tides
However, most of these methods belong to simple blending, and the prepared compound coated fertilizer has poor structure and unsatisfactory fertilizer effect.
There are also a small number of literature reports that use natural organic materials as raw materials and undergo complex chemical modification to improve the cohesiveness and encapsulation of raw materials to prepare coated fertilizers. However, these methods involve more complicated processes, higher costs, and poor promotion.

Method used

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  • Microbial-friendly biomass fertilizer coating agent and preparation method thereof
  • Microbial-friendly biomass fertilizer coating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A biomass-based fertilizer coating agent is prepared from the following raw materials in parts by weight: lignin 10, tackifier 5, and biomass pyrolysis-modified heavy oil 85.

[0035] Among them, the preparation method of biomass pyrolysis oil is as follows: dry and crush corn stalks to 50 mm, place them in a biomass pyrolysis device, and conduct pyrolysis in the absence of oxygen under the condition of a heating rate of 15 °C / s and a final temperature of 500 °C, and collect Volatile matter, the volatile matter is cooled to room temperature to form bio-oil. Add ethanol with a volume ratio of 100% to the bio-oil, stir and mix thoroughly, put it into a high-temperature, high-pressure reactor, raise the temperature to 110°C, and react for 40min at a stirring intensity of 150r / min. After the esterification reaction, add 150% dichloromethane by volume to the bio-oil cooled to room temperature, stir well and then stand for stratification, remove the polar liquid in the upper ...

Embodiment 2

[0040] A biomass-based fertilizer coating agent is prepared from the following raw materials in parts by weight: lignin 5, tackifier 10, biomass pyrolysis modified heavy oil 85.

[0041] Among them, the preparation method of biomass pyrolysis oil is as follows: dry and crush wheat straw to 50 mm, place it in a biomass pyrolysis device, and carry out pyrolysis in the absence of oxygen under the condition of a heating rate of 20 °C / s and a final temperature of 450 °C, and collect Volatile matter, the volatile matter is cooled to room temperature to form bio-oil. Add ethanol with a volume ratio of 100% to the bio-oil, stir and mix thoroughly, put it into a high-temperature, high-pressure reactor, raise the temperature to 100°C, and react for 60 minutes at a stirring intensity of 150r / min. After the esterification reaction, add 150% dichloromethane by volume to the bio-oil cooled to room temperature, stir well and then stand for stratification, remove the polar liquid in the upper...

Embodiment 3

[0046] A biomass-based fertilizer coating agent is prepared from the following raw materials in parts by weight: lignin 5, tackifier 5, and biomass pyrolysis-modified heavy oil 90.

[0047] Among them, the preparation method of biomass pyrolysis oil is as follows: dry and crush rice stalks to 50 mm, place them in a biomass pyrolysis device, and conduct pyrolysis in the absence of oxygen under the condition of a heating rate of 20 °C / s and a final temperature of 450 °C, and collect Volatile matter, the volatile matter is cooled to room temperature to form bio-oil. Add methanol with a volume ratio of 100% to the bio-oil, stir and mix thoroughly, put it into a high-temperature, high-pressure reactor, raise the temperature to 120°C, and react for 40min at a stirring intensity of 150r / min. After the esterification reaction, add 150% dichloromethane by volume to the bio-oil cooled to room temperature, stir well and then stand for stratification, remove the polar liquid in the upper ...

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Abstract

The invention provides a microbial-friendly biomass fertilizer coating agent and a preparation method thereof, and relates to the field of biomass utilization and fertilizer development. The microbial-friendly biomass fertilizer coating agent is prepared from the following raw materials by weight: 5-10 parts of lignin, 5-10 parts of a tackifier, and 80-95 parts of biomass pyrolysis modified heavyoil. The lignin cellulose, as a raw material, is pyrolyzed to generate bio-oil used as a fertilizer coating agent, and has the advantages of cheap and easily available raw materials, simple and easilyamplified process, easily regulated and controlled product quality, environment-friendly product, easy degradation and the like.

Description

technical field [0001] The invention relates to the fields of biomass utilization and fertilizer development, in particular to a microbial-friendly biomass fertilizer coating agent and a preparation method thereof. Background technique [0002] Modern agricultural production is inseparable from the use of fertilizers. my country is a large agricultural country and the world's largest producer and consumer of chemical fertilizers. However, the following outstanding problems generally exist in the process of fertilizer application in my country: [0003] 1) Fertilizer utilization rate is low, such as nitrogen fertilizer such as urea, its utilization rate is only 30-40%, far below the world average level. [0004] 2) Short fertilizer efficiency, fast loss, and high operating costs; fertilizers are released and transformed quickly after being applied to the field, resulting in excess nutrients in the early stage and insufficient nutrients in the later stages, requiring frequent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G5/30
CPCC05F11/00C05G3/00C05G5/30
Inventor 温博婷安保军崔宗均袁旭峰郭铭男王巍巍
Owner 山佳经典(北京)科技有限公司