Straw powder-based anti-blocking agent of compound fertilizer

An anti-caking agent and compound fertilizer technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of inert substances that are difficult to decompose naturally, low utilization efficiency, and easy to accumulate soil, and achieve biodegradability and environmental friendliness Good environmental friendliness, good loose effect

Inactive Publication Date: 2011-05-11
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is low in cost, but has the following disadvantages: (1) large amount of dust and harsh operating environment; (2) poor anti-caking effect; (3) inert substances are difficult to decompose naturally, and are easy to accumulate in the Soil, strongly affects the soil ecological environment
Compared with dusting powder, the coating treatment is more uniform, and the effect of anti-caking of chemical fertilizers is better, especially at higher humidity, it can still maintain a certain anti-caking effect, but there are also the following shortcomings: (1) When the ambient temperature is low, the anti-caking effect is good, but when the temperature is high, the effect is not good; (2) The use of a large amount of alkane oil that is difficult to decompose naturally not only affects the water solubility of chemical fertilizers, but also pollutes the soil after repeated use (3) The cost of artificially synthesized reagent raw materials with a large proportion is relatively high, and it is easy to bring in toxic substances to pollute the soil and crops
Various types of crop straws are abundant in my country, but most of them are directly returned to the field, or used as industrial raw materials such as fuel, papermaking, feed, etc., and the utilization efficiency is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, get raw material by following mass parts ratio:

[0035] Straw powder 85;

[0036] Stearic acid 2.8;

[0037] Stearylamine 0.7;

[0038] Diethanolamine 0.3;

[0039] Solid paraffin 3;

[0040] Recovery of Lard 8.2.

[0041] Put all the raw materials into a reaction stirred tank with a temperature of 90°C, stir evenly, react for 30 minutes, and cool to room temperature to obtain the finished anti-caking agent. The high-concentration compound fertilizer (nitrogen, phosphorus, potassium effective nutrient content ≥ 45%) added with 10 kg / ton of this anti-caking agent has the following moisture-proof and anti-caking properties: when it is stored at room temperature at 25°C for 30 days The moisture absorption rate is 23.7% lower than that without addition; the caking rate is 4.8% under the condition of airtight storage at room temperature at 35°C for 60 days, which is 83.7% lower than that without addition.

Embodiment 2

[0042] Embodiment 2, get raw material by following mass parts proportioning:

[0043] Straw powder 95;

[0044] Stearic acid 0.5;

[0045] Stearylamine 0.1;

[0046] Triethanolamine 0.1;

[0047] White oil 0.5;

[0048] Recovery of peanut oil 3.8.

[0049] Put all the raw materials into a reaction stirred tank with a temperature of 70°C, stir evenly, react for 20 minutes, and cool to room temperature to obtain the finished anti-caking agent. Add the high-nitrogen compound fertilizer (nitrogen: potassium=32:8) of 15 kilograms / every ton of this anti-caking agent, have following moisture-proof, anti-caking performance: under the situation that 25 ℃ of room temperature are opened and stored for 30 days, moisture absorption rate is lower than not Added is 17.7% lower; in the case of airtight storage at room temperature at 35°C for 60 days, the caking rate is 4.1% lower than that without adding 81.1%.

Embodiment 3

[0050] Embodiment 3, get raw material by following mass parts proportioning:

[0051] Straw powder 75;

[0052] Stearic acid 5;

[0053] Stearylamine 1;

[0054] Diethanolamine 0.5;

[0055] Solid paraffin 5;

[0056] Recovery lard 13.5.

[0057]Put all the raw materials into a reaction stirred tank with a temperature of 110°C, stir evenly, react for 10 minutes, and cool to room temperature to obtain the finished anti-caking agent. Add the high-nitrogen compound fertilizer (nitrogen: phosphorus: potassium=26: 12: 10) of 6 kilograms / every ton of this anti-caking agent, have following moisture-proof, anti-caking performance: under the situation of 30 days of open storage at 25 ℃ of room temperature, The moisture absorption rate is 20.4% lower than that without addition; in the case of airtight storage at room temperature at 35°C for 60 days, the caking rate is 3.7% lower than that without addition and 79.3%.

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PUM

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Abstract

The invention provides a straw powder-based anti-blocking agent of a compound fertilizer, which is prepared by mixing the following raw materials in parts by weight: 7.5-9 parts of straw powder, 0.5-5 parts of stearic acid, 0.1-1 part of stearin, 0.1-0.5 part of hydramine, 0.5-5 parts of white oil or paraffin wax and 2-15 parts of natural oil, the six components are uniformly stirred at 60-120 DEG C and then cooled to the room temperature after reaction for 5-60 minutes so that the finished-product anti-blocking agent is obtained. The main component of the straw powder-based anti-blocking agent is straw which belongs to natural biological raw material so that the straw powder-based anti-blocking agent has biodegradability and favorable environment friendliness and can be repeatedly used for a long term without resulting in adverse influences on soil, crops and farm environments. The straw powder-based anti-blocking agent has the advantages of high-efficiency and full utilization of straw resources, environmental protection, convenience for processing and high cost performance without using engine oil.

Description

【Technical field】 [0001] The invention relates to an anti-caking agent for compound fertilizer, in particular to an anti-caking agent for straw powder-based compound fertilizer. 【Background technique】 [0002] With the development of agriculture, single-nutrient fertilizers can no longer meet the market demand, and high-efficiency, multi-element and multi-variety special fertilizers, especially high-quality compound fertilizers, are becoming more and more popular. [0003] Agglomeration is a common phenomenon in the process of fertilizer production, transportation and storage, which has been plagued by the rapid development of the fertilizer industry. Caking also brings a lot of trouble to the storage, transportation and use of compound fertilizers, and seriously affects fertilizer efficiency. Correctly solving the caking problem is one of the effective ways to improve the quality and cost performance of chemical fertilizer products. Prior art shows (see Chinese patent for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 刘心中陈荣国
Owner FUJIAN UNIV OF TECH
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