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A kind of production method for preparing tricalcium phosphate by-product durian special fertilizer

A technology of tricalcium phosphate and by-product durian, applied in chemical instruments and methods, applications, phosphorus compounds, etc., can solve problems affecting crop growth and quality, waste of nitrogen, phosphorus and potassium elements, environmental pollution, etc., and achieve significant environmental protection. Value and economic benefits, avoiding the discharge of waste liquid, the effect of significant economic benefits

Inactive Publication Date: 2016-03-16
GUIZHOU KAILIN GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And it is reported that the absorption rate of any kind of crops for nitrogen, phosphorus and potassium elements is low, the absorption rate of nitrogen fertilizer will not exceed 25%, the absorption rate of phosphorus fertilizer is about 40%, and the absorption rate of potassium fertilizer is about 60% , so a large amount of nitrogen, phosphorus and potassium elements will remain in the soil and will not be absorbed by crops, resulting in a waste of nitrogen, phosphorus and potassium resources and environmental pollution; , the absorption of other elements by crops will also be affected, thereby affecting the growth and quality of crops
[0005] At the same time, in the preparation process of tricalcium phosphate products, it is usually produced by crystallization and precipitation. This process often requires deep crystallization of tricalcium phosphate, thereby reducing the waste of elemental resources such as nitrogen, phosphorus, and calcium. Increase the output of tricalcium phosphate and reduce production costs; but this deep crystallization will affect the purity of tricalcium phosphate products, and then affect the quality of tricalcium phosphate products; will cause environmental pollution

Method used

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  • A kind of production method for preparing tricalcium phosphate by-product durian special fertilizer
  • A kind of production method for preparing tricalcium phosphate by-product durian special fertilizer
  • A kind of production method for preparing tricalcium phosphate by-product durian special fertilizer

Examples

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Effect test

Embodiment 1

[0047] A production method for preparing tricalcium phosphate by-product durian special fertilizer, using phosphoric acid to react with carbonamide to generate urea phosphate, and adjusting the temperature at 115°C so that the structural formula of urea phosphate is ionized and separated to form dihydrogen phosphate ion and Carboxamide cation, and then use carboxamide cation to approach phosphoric acid to form a structural formula of The intermediate ion body, and then add calcium ions to it, so that the calcium ions react with dihydrogen phosphate to generate tricalcium phosphate product slurry, and carry out cooling crystallization and centrifugal filtration treatment on the tricalcium phosphate product slurry, during the crystallization process , when the content of calcium nitrogen, phosphorus and calcium is detected to be 1.5:0.9:0.4, it is the crystallization end point, and tricalcium phosphate filter cake and filtrate are obtained; the tricalcium phosphate product is pl...

Embodiment 2

[0053] A production method for preparing tricalcium phosphate by-product durian special fertilizer, using phosphoric acid to react with carbonamide to generate urea phosphate, and adjusting the temperature at 100°C to ionize and separate the structural formula of urea phosphate to form dihydrogen phosphate ion and Carboxamide cation, and then use carboxamide cation to approach phosphoric acid to form a structural formula of The intermediate ion body, and then add calcium ions to it, so that the calcium ions react with dihydrogen phosphate to generate tricalcium phosphate product slurry, and carry out cooling crystallization and centrifugal filtration treatment on the tricalcium phosphate product slurry, during the crystallization process , when the nitrogen, phosphorus and calcium content is detected to be 1:1.1:0.3, it is the end point of crystallization, and the tricalcium phosphate filter cake and filtrate are obtained; the tricalcium phosphate product is placed in a drying...

Embodiment 3

[0059] A production method for preparing tricalcium phosphate by-product durian special fertilizer, using phosphoric acid to react with carbonamide to generate urea phosphate, and adjusting the temperature at 125°C so that the structural formula of urea phosphate is ionized and separated to form dihydrogen phosphate ion and Carboxamide cation, and then use carboxamide cation to approach phosphoric acid to form a structural formula of The intermediate ion body, and then add calcium ions to it, so that the calcium ions react with dihydrogen phosphate to generate tricalcium phosphate product slurry, and carry out cooling crystallization and centrifugal filtration treatment on the tricalcium phosphate product slurry, during the crystallization process , when the nitrogen, phosphorus and calcium content is 1.7:1.1:0.5, it is the end point of crystallization, and the tricalcium phosphate filter cake and filtrate are obtained; the tricalcium phosphate product is placed in a drying ov...

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Abstract

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing tricalcium phosphate and a byproduct special fertilizer for durian. The quality of the produced durian compound fertilizer is guaranteed by virtue of molar ratio of raw materials in a production process and accurate analysis and detection of the filtrate in a crystallization step, and a waste liquid in the production process of a chemical engineering product is used as a raw material of the compound fertilizer by way of adjusting the content of filtrate components, so that emission of the waste liquid is avoided and the production cost of the compound fertilizer is lowered. The production method has remarkable environment-friendly value and economic benefit.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a production method for preparing a special fertilizer for tricalcium phosphate by-product durian. Background technique [0002] Durian (scientific name: DuriozibethinusMurr) is a giant tropical evergreen tree with oblong leaves, pointed tops, cymes, light yellow flowers, football-sized fruit, solid peel, dense triangular thorns, and flesh made of arils. Composed of meat buns, the flesh color is light yellow, sticky and juicy. It is a fruit of great economic value. Durian is hot in nature, can promote blood circulation and dissipate cold, relieve dysmenorrhea, and is especially suitable for women who suffer from dysmenorrhea; it can also improve the symptoms of coldness in the abdomen, and can increase body temperature, making it an ideal tonic for people with cold constitutions. The nutritional value of durian is extremely high. Regular consumption can strengthen the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/32C05G1/00
Inventor 廖吉星陈肖虎魏发展高贵龙周勇薛涛蔺忠建
Owner GUIZHOU KAILIN GRP CO LTD
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