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A method for producing macroelement water-soluble fertilizer at low cost

A large amount of elements, low-cost technology, applied in the direction of inorganic fertilizers, ammonium salt fertilizers, nitrate fertilizers, etc., can solve the problems of less soluble phosphate production processes, high manufacturing costs, and low investment, and achieve reasonable graded use and transportation The effect of convenience and low production cost

Inactive Publication Date: 2017-09-29
郑秀兴 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for producing soluble phosphate with less production process, short process, less investment and low energy consumption in order to solve the outstanding problems of high manufacturing cost of large-scale water-soluble fertilizers that are ubiquitous at present.

Method used

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  • A method for producing macroelement water-soluble fertilizer at low cost

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] "17-18-17" macroelement water-soluble fertilizer (medium element type), supporting 15-23-10 (its formula is: N=10.61%, P 2 o 5 = 46.55% of monoammonium phosphate 165.37kg / t, insufficient P 2 o 5 Provided by the ammonium phosphate in the mixed slurry of the ammonium phosphate slurry II of the first settling tank and the co-dissolving slurry II of the second settling tank during the preparation of the 17-18-17 water-soluble fertilizer; N=32.00%, P 2 o 5 = 4.00% ammonium nitrate 219.68kg / t; K 2 O=50% potassium sulfate 199.65kg / t; N=81.94% synthetic ammonia 38.38kg / t; H 2 SO 4 =98% sulfuric acid 70.38kg / t) preparation of compound fertilizer.

[0035] raw material:

[0036] Monoammonium phosphate: N=10.61%, P 2 o 5 =46.55%, water-soluble matter=81.00%, water-insoluble matter=17.00%, water=2.00%;

[0037] Phosphorous ammonium nitrate: N=32.00%, P 2 o 5 = 4.00%, water-insoluble matter ≤ 0.01%, water = 1.00%;

[0038] Calcium nitrate: N=13%, soluble (calcium+magnes...

Embodiment 2

[0055] "17-17-17" macroelement water-soluble fertilizer (trace element type), supporting 20-18-12 (its formula is: N=10.39%, P 2 o 5 = 48.00% monoammonium phosphate 165.83kg / t, insufficient P 2 o 5 Provided by the ammonium phosphate in the mixed slurry of the ammonium phosphate slurry II of the first settling tank and the co-dissolving slurry II of the second settling tank during the preparation of 17-17-17 water-soluble fertilizer; N=46.00% urea 266.67 kg / t; K 2 O=60% potassium chloride 200.21kg / t; N=81.94% synthetic ammonia 46.33kg / t; H 2 SO 4 =98% sulfuric acid 105.11kg / t) preparation of compound fertilizer.

[0056] raw material:

[0057] Monoammonium phosphate: N=10.39%, P 2 o 5 =48.00%, water-soluble matter=78.79%, water-insoluble matter=19.21%, water=2.00%;

[0058] Urea: N=46.00%, water insoluble ≤0.01%, water=1.00%;

[0059] Zinc sulfate: Zn=35%, water insoluble ≤0.01%, water=1.00%;

[0060] Potassium chloride: K 2 O=60.00%, water insoluble ≤0.01%, water=1...

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Abstract

The invention relates to a low-cost manufacturing method for a water-soluble fertilizer containing macroelements. The method comprises the following steps: (1) adding ammonium phosphate into a dissolving tank so as to form ammonium phosphate slurry I and ammonium phosphate slurry II; (2) feeding the ammonium phosphate slurry I into a mixer so as to form co-dissolved slurry I and co-dissolved slurry II; (3) feeding a bed charge into a pelletizer; (4) delivering the co-dissolved slurry I into a tubular reactor so as to form a semi-finished product III; (5) subjecting the semi-finished product III to drying, screening and cooling so as to obtain the water-soluble fertilizer containing macroelements; (6) delivering the ammonium phosphate slurry II and the co-dissolved slurry II into a slurry preparing tank so as to prepare co-dissolved slurry IV; (7) feeding a bed charge into the pelletizer; (8) delivering the co-dissolved slurry IV into the tubular reactor so as to form a semi-finished product VI; and (9) subjecting the semi-finished product VI to drying, screening and cooling so as to obtain a conventional composite fertilizer. According to the method provided by the invention, production procedures are reduced and process flow is shortened; and the method has the significant advantages of little investment and low energy consumption.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a method for producing water-soluble fertilizers with a large amount of elements at low cost. Background technique [0002] Water-soluble fertilizer is a multi-component compound fertilizer that can be completely dissolved in water, including water-soluble fertilizers with large amounts of elements (also divided into types with medium elements and trace elements), water-soluble fertilizers with trace elements, water-soluble fertilizers containing amino acids, water-soluble fertilizers containing humic acids, etc. . The common feature of water-soluble fertilizers is that they can be quickly dissolved in water and are more easily absorbed by crops. Their absorption and utilization rate is relatively high, and there are few insoluble or insoluble residues. They can be applied to agricultural facilities such as flushing and drip irrigation to realize the integration of water and fertilizer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00
CPCC05B7/00C05B17/00C05C3/00C05C5/02C05C5/04C05G5/12C05D1/02
Inventor 郑秀兴吴舒梁红江贲艳英
Owner 郑秀兴
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