Method for preparing polygonum multiflorum Chinese herbal medicine nutrition fertilizer

A preparation method and technology of Chinese herbal medicine, applied in the directions of fertilization device, fertilizer mixture, application, etc., can solve the problems of the proportion that does not meet the needs of Polygonum multiflorum, the introduction of calcium dihydrogen phosphate products, and the pollution of the environment, etc., and achieve significant economic value, significant Environmental value, the effect of low phosphorus recovery rate

Inactive Publication Date: 2015-04-29
GUIZHOU UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to provide a preparation method of Radix Polygoni Multiflori Chinese herbal medicine nutrient fertilizer, to solve the problem that the matching of nutrient elements in the existing fertilizer does not meet the ratio of Polygonum multiflorum to the requirement of nutrient elements, resulting in the fertilizer applied to Polygonum multiflorum being overwhelmed by Polygonum multiflorum. The absorption rate is low, and some elemental compounds remain in the soil, changing the structure of the soil and polluting the environment
At the same time, it solves the waste of a large amount of calcium dihydrogen phosphate that will be caused by incomplete crystallization of calcium dihydrogen phosphate in the process of preparing calcium dihydrogen phosphate products, and excessive crystallization of calcium dihydrogen phosphate will bring the A large number of impurities, which in turn makes the technical problem of low purity of calcium dihydrogen phosphate products

Method used

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  • Method for preparing polygonum multiflorum Chinese herbal medicine nutrition fertilizer
  • Method for preparing polygonum multiflorum Chinese herbal medicine nutrition fertilizer
  • Method for preparing polygonum multiflorum Chinese herbal medicine nutrition fertilizer

Examples

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Embodiment 1

[0041] A preparation method of Radix Polygoni Multiflori Chinese herbal medicine nutrient fertilizer, adding phosphoric acid and carbonamide to a reaction kettle at a molar ratio of 1.1:1 and mixing them, then raising the temperature of the two mixtures to 150°C at a heating rate of 4°C / min, and stirring React for 160 minutes, cool the temperature to 20°C and then centrifuge to obtain the intermediate; mix the intermediate and calcium hydroxide in a reaction kettle at a molar ratio of 1:0.6, and react at a stirring speed of 200r / min for 60 minutes. And adjust the pH value of the reaction to be 8.5, after the reaction finishes, obtain the slurry containing nitrogen, phosphorus and calcium, place the slurry in a cooling crystallizer for circulation crystallization treatment, and detect and analyze the filtrate simultaneously, when the nitrogen content in the filtrate is 7%, When phosphorus pentoxide content is 10%, stop crystallization and filter, and the filter cake that obtains...

Embodiment 2

[0043] A preparation method of Radix Polygoni Multiflori Chinese herbal medicine nutrient fertilizer, adding phosphoric acid and carbonamide to a reaction kettle at a molar ratio of 1.4:1 and mixing them, then raising the temperature of the two mixtures to 200°C at a heating rate of 4°C / min, and stirring React for 180 minutes, cool the temperature to 40°C and then centrifuge to obtain the intermediate; mix the intermediate and calcium hydroxide in a reaction kettle at a molar ratio of 1:0.8, and react for 40 minutes at a stirring speed of 250r / min. And adjust the pH value of reaction to be 9.5, after the reaction finishes, obtain the slurry containing nitrogen, phosphorus and calcium, place the slurry in a cooling crystallizer for circulation crystallization treatment, detect and analyze the filtrate simultaneously, when the nitrogen content in the filtrate is 9%, When phosphorus pentoxide content is 11%, stop crystallization and filter, and the filter cake that obtains is calc...

Embodiment 3

[0045] A preparation method of Radix Polygoni Multiflori Chinese herbal medicine nutrient fertilizer, adding phosphoric acid and carbonamide to a reaction kettle at a molar ratio of 1.3:1 and mixing them, then raising the temperature of the two mixtures to 180°C at a heating rate of 4°C / min, and stirring React for 170 minutes, cool the temperature to 30°C and then centrifuge to obtain the intermediate; mix the intermediate with calcium hydroxide in a reaction kettle at a molar ratio of 1:0.7, and react at a stirring speed of 220r / min for 50 minutes. And adjust the pH value of the reaction to be 9, after the reaction finishes, obtain the slurry containing nitrogen, phosphorus and calcium, place the slurry in a cooling crystallizer for circulation crystallization treatment, detect and analyze the filtrate simultaneously, when the nitrogen content in the filtrate is 8%, When phosphorus pentoxide content is 10.5%, stop crystallization and filter, and the filter cake that obtains is...

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Abstract

The invention relates to the technical field of chemical industry and discloses a method for preparing a polygonum multiflorum Chinese herbal medicine nutrition fertilizer. The method comprises the following steps: analyzing the ratio of the nutrient elements needed by growth of polygonum multiflorum by detecting the amount of various nutrient elements absorbed from soil in the polygonum multiflorum growth process, thereby obtaining the polygonum multiflorum fertilizer special for polygonum multiflorum. Phosphoric acid and carbamide react to generate an intermediate product, the intermediate product reacts with an alkaline calcium salt, and one part of monocalcium phosphate generated in the reaction is crystallized and separated out through control of the parameters in the reaction, so that the contents of nitrogen and phosphorus in the reaction solution are regulated to prepare the polygonum multiflorum Chinese herbal medicine nutrition fertilizer. According to the production method, the raw materials are fully utilized, and the prepared polygonum multiflorum Chinese herbal medicine nutrition fertilizer has the advantages that the yield and quality of the polygonum multiflorum can be improved, and the purity of the byproduct monocalcium phosphate is high.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of Polygonum multiflorum Chinese herbal medicine nutrient fertilizer. Background technique [0002] Polygonum multiflorum is a perennial twining vine of Polygonaceae. The roots are long and thin, and the end becomes a hypertrophic root tuber, which has the functions of nourishing the liver, kidney, nourishing blood, and expelling wind. Treatment of liver and kidney yin deficiency, premature graying of hair and beard, blood deficiency, dizziness, weakness of the waist and knees, aching muscles and bones, nocturnal emission, metrorrhagia, chronic malaria, chronic dysentery, chronic hepatitis, carbuncle, scrofula, intestinal wind, and hemorrhoids. Radix Polygoni Multiflori nourishes liver and kidney, benefits essence and blood, black beard and hair, strengthens muscles and bones; used for vertigo and tinnitus, premature graying of beard and hair, sore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05B17/00C05D9/00C05D9/02
Inventor 陈肖虎廖吉星曾舒徐圆薛涛项双龙唐晓宁朱飞武黄芳王丽远
Owner GUIZHOU UNIV
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