A kind of production method for preparing special fertilizer for ammonium phosphate by-product red peony

Abstract

The present invention relates to the field of chemical technology, in particular to a production method for preparing ammonium phosphate by-product Radix Paeoniae Rubra special fertilizer, by analyzing the nutrient requirements in the growth process of Radix Radix Radix Radix Paeoniae Rubra, combined with the shortcomings in the preparation process of ammonium phosphate products for analysis and analysis. It is understood that the combination of the preparation process of the special compound fertilizer for red peony root and the preparation process of ammonium phosphate products makes the two processes complement each other, reduces the waste liquid discharge in the preparation process of ammonium phosphate products, and avoids the deep crystallization. The shortcomings of the low purity of the ammonium phosphate products from the past have improved the quality of the ammonium phosphate products; by adjusting and matching the nutrient elements in the waste liquid, the prepared special compound fertilizer for red peony can meet the nutritional needs of red peony and improve the quality of the ammonium phosphate product. The growth speed of Radix Paeoniae Rubra improves the yield and quality of Radix Paeoniae Rubra, reduces the soil compaction rate, improves the land utilization rate, and has significant environmental protection value and economic benefits.

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