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...

AI Technical Summary

Problems solved by technology

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 element is lacking, it will also affect the absorption of other nutrient elements, resulting in low yield of Radix Paeoniae Rubra and leaves. Withering, falling off, less flowering, few results, underdeveloped roots, slow growth and other problems; for this reason, some researchers have studied the special fertilizer for red peony root, such as "A Kind of Red Peony Chinese Herbal Nutritional Fertilizer" with the patent number 201010156942.0. A kind of raw material is potassium dihydrogen phosphate, potassium sulfate, insecticide, phenolic resin, livestock and poultry manure, pumpkin powder, bitter gourd powder, pine needle powder and other Chinese herbal medicine plant powder and straw powder, which are made into lumps through fermentation. Nutritional fertilizer, it can be seen that the preparation of special fertilizer for red peony root is relatively rare in the prior art, and some technical solutions are all formed by using traditional chemical fertilizers or farmyard manure, and according to the absorption of nitrogen, phosphorus and potassium fertilizers by crops From the perspective of the situation, the absorption rate of nitrogen fertilizer by crops is 20-46%, phosphorus fertilizer is 10-25%, and potassium fertilizer is about 46-60%. This will cause a large amount of nitrogen, phosphorus and potassium fertilizers to remain in the soil, causing soil pollution. Therefore, Therefore, it is necessary to improve this defect for the cultivation of Radix Paeoniae Rubra, so that when the special fertilizer for Radix Paeoniae Rubra can meet the fertilizer requirements of Radix Paeoniae Rubra, reduce the nitrogen, phosphorus and potassium elements remaining in the soil, and improve the utilization rate of the compound fertilizer for Radix Paeoniae Rubra

[0003] At the same time, in the preparation process of ammonium phosphate products, one of wet-process phosphoric acid and hot-process phosphoric acid is usually used to prepare ammonium phosphate products. This process will affect the purity of ammonium phosphate products, making ammonium phosphate The purity of the product is low. Therefore, it is necessary to design an additional purification process for ammonium phosphate to purify the ammonium phosphate product, thereby increasing the preparation cost of the ammonium phosphate product. Therefore, some people react by using phosphoric acid and urea at a temperature lower than 80 degrees Celsius. To produce an intermediate such as urea phosphate, and then use the intermediate as a raw material to react with ammonia gas to produce ammonium phosphate products. This process requires cooling and cyclic crystallization of ammonium phosphate products, but often requires deep crystallization of ammonium phosphate products. Only in this way can a large amount of nitrogen and phosphorus nutrients in the waste liquid be discharged into the environment, thereby avoiding the waste of resources and reducing the production cost of ammonium phosphate products. However, due to the deep crystallization process, other products will also be crystallized out. , thereby affecting the purity of the ammonium phosphate product

Images