Production method for preparing ammonium phosphate byproduct used as special fertilizer for red peonies

Abstract

The invention relates to the technical field of chemical engineering, particularly to a production method for preparing an ammonium phosphate byproduct used as a special fertilizer for red peonies. Nutritional need conditions of the red peonies during growth are analyzed, defects in a preparation technology for ammonium phosphate products are combined to be analyzed and comprehended, and a preparation technology for a special combined compound fertilizer for the red peonies is combined with the preparation technology for the ammonium phosphate products, so that the two technologies are mutually complemented, the waste liquid discharge quantity in the preparation technology for the ammonium phosphate products is reduced, the defect of the lower ammonium phosphate product impurity caused by deep crystallization is overcome, and the quality of the ammonium phosphate products is improved; nutrient elements in waste liquids are adjusted and matched, so that the prepared special compound fertilizer for the red peonies can satisfy nutritional needs of the red peonies, the growing speed of the red peonies is increased, the yield and the quality of the red peonies are improved, the soil hardening rate is decreased, the land utilization rate is increased, and the method has the significant environmental protection value and the significant economic benefit.

Description

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a production method for preparing ammonium phosphate by-product red peony special fertilizer. Background technique

[0002] Radix Paeoniae Rubra, also known as Muchishao, Chishaoyao, Red Chishao, Cao Chishao, is a plant of Ranunculaceae, a perennial herb, which has the effects of clearing heat and cooling blood, dissipating blood stasis and relieving pain. When people cultivate Radix Paeoniae Rubra, they usually use compound fertilizer and urea as the main fertilizers, and the effect is better; but the nutrients in the fertilizers are difficult to meet the needs of Radix Paeoniae Rubra, and because most growers are concerned about the growth law of Radix Paeoniae Rubra and the There is little understanding of nutritional requirements, and the fertilizers applied lack certain nutrients. According to the theory of short boards of wooden barrels, when a certain nutrient el...

Examples

Embodiment 1

[0043] A production method for preparing ammonium phosphate by-product Radix Paeoniae Rubra, which uses phosphoric acid and urea to mix at a molar ratio of 1.5:1, and stirs and reacts for 1 hour at a temperature of 90°C to obtain an intermediate slurry; Ammonia gas was passed into the medium, and the reaction temperature was controlled at 60°C. After stirring for 20 minutes, the pH value of the end point was controlled to be 9.8 to obtain ammonium phosphate slurry; then the ammonium phosphate slurry was placed in a circulating cooling crystallizer for circulating cooling crystallization treatment , and the nitrogen and phosphorus elements in the solution are detected, analyzed and adjusted so that the molar ratio of the nitrogen and phosphorus elements in the solution is 1.1:1.1, stop crystallization and filter, the filter cake is an ammonium phosphate product, and potassium components are added to the filtrate and medium and trace element compounds, and adjust the molar ratio ...

Embodiment 2

[0051] A production method for preparing ammonium phosphate by-product Radix Paeoniae Rubra special fertilizer, using phosphoric acid and urea to mix according to the molar ratio of 1.8:1, stirring and reacting at a temperature of 110°C for 2.5 hours to obtain an intermediate slurry; Ammonia gas is introduced into the slurry, and the reaction temperature is controlled at 90°C. After stirring for 30 minutes, the pH value at the end point is controlled to be 11.4 to obtain ammonium phosphate slurry; then the ammonium phosphate slurry is placed in a circulating cooling crystallizer for circulating cooling crystallization treatment, and detect, analyze and adjust the nitrogen and phosphorus elements in the solution so that the molar ratio of the nitrogen and phosphorus elements in the solution is 1.1:1.7, then stop the crystallization and filter the treatment, the filter cake is an ammonium phosphate product, and add potassium to the filtrate Components and trace element compounds,...

Embodiment 3

[0059] A production method for preparing ammonium phosphate by-product red peony root special fertilizer, using phosphoric acid and urea to mix according to the molar ratio of 1.65:1, stirring and reacting for 2 hours at a temperature of 100°C to obtain an intermediate slurry; Ammonia gas was passed into the medium, and the reaction temperature was controlled at 75°C. After stirring for 25 minutes, the pH value of the end point was controlled to be 10.3 to obtain ammonium phosphate slurry; then the ammonium phosphate slurry was placed in a circulating cooling crystallizer for circulating cooling crystallization treatment , and detect, analyze and adjust the nitrogen and phosphorus elements in the solution, so that the molar ratio of the nitrogen and phosphorus elements in the solution is 1.1:1.4, stop the crystallization and filter, the filter cake is ammonium phosphate product, and add potassium to the filtrate and medium and trace element compounds, and adjust the molar ratio...

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a production method for preparing ammonium phosphate by-product red peony special fertilizer. Background technique

[0002] Radix Paeoniae Rubra, also known as Muchishao, Chishaoyao, Red Chishao, Cao Chishao, is a plant of Ranunculaceae, a perennial herb, which has the effects of clearing heat and cooling blood, dissipating blood stasis and relieving pain. When people cultivate Radix Paeoniae Rubra, they usually use compound fertilizer and urea as the main fertilizers, and the effect is better; but the nutrients in the fertilizers are difficult to meet the needs of Radix Paeoniae Rubra, and because most growers are concerned about the growth law of Radix Paeoniae Rubra and the There is little understanding of nutritional requirements, and the fertilizers applied lack certain nutrients. According to the theory of short boards of wooden barrels, when a certain nutrient el...

Examples

Embodiment 1

[0043] A production method for preparing ammonium phosphate by-product Radix Paeoniae Rubra, which uses phosphoric acid and urea to mix at a molar ratio of 1.5:1, and stirs and reacts for 1 hour at a temperature of 90°C to obtain an intermediate slurry; Ammonia gas was passed into the medium, and the reaction temperature was controlled at 60°C. After stirring for 20 minutes, the pH value of the end point was controlled to be 9.8 to obtain ammonium phosphate slurry; then the ammonium phosphate slurry was placed in a circulating cooling crystallizer for circulating cooling crystallization treatment , and the nitrogen and phosphorus elements in the solution are detected, analyzed and adjusted so that the molar ratio of the nitrogen and phosphorus elements in the solution is 1.1:1.1, stop crystallization and filter, the filter cake is an ammonium phosphate product, and potassium components are added to the filtrate and medium and trace element compounds, and adjust the molar ratio ...

Embodiment 2

[0051] A production method for preparing ammonium phosphate by-product Radix Paeoniae Rubra special fertilizer, using phosphoric acid and urea to mix according to the molar ratio of 1.8:1, stirring and reacting at a temperature of 110°C for 2.5 hours to obtain an intermediate slurry; Ammonia gas is introduced into the slurry, and the reaction temperature is controlled at 90°C. After stirring for 30 minutes, the pH value at the end point is controlled to be 11.4 to obtain ammonium phosphate slurry; then the ammonium phosphate slurry is placed in a circulating cooling crystallizer for circulating cooling crystallization treatment, and detect, analyze and adjust the nitrogen and phosphorus elements in the solution so that the molar ratio of the nitrogen and phosphorus elements in the solution is 1.1:1.7, then stop the crystallization and filter the treatment, the filter cake is an ammonium phosphate product, and add potassium to the filtrate Components and trace element compounds,...

Embodiment 3

[0059] A production method for preparing ammonium phosphate by-product red peony root special fertilizer, using phosphoric acid and urea to mix according to the molar ratio of 1.65:1, stirring and reacting for 2 hours at a temperature of 100°C to obtain an intermediate slurry; Ammonia gas was passed into the medium, and the reaction temperature was controlled at 75°C. After stirring for 25 minutes, the pH value of the end point was controlled to be 10.3 to obtain ammonium phosphate slurry; then the ammonium phosphate slurry was placed in a circulating cooling crystallizer for circulating cooling crystallization treatment , and detect, analyze and adjust the nitrogen and phosphorus elements in the solution, so that the molar ratio of the nitrogen and phosphorus elements in the solution is 1.1:1.4, stop the crystallization and filter, the filter cake is ammonium phosphate product, and add potassium to the filtrate and medium and trace element compounds, and adjust the molar ratio...

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