Production method of special fertilizer for preparing calcium hydrogen phosphate and coproducing pepper

Abstract

The invention relates to the technical field of chemical engineering, particularly a production method of a special fertilizer for preparing calcium hydrogen phosphate and coproducing pepper. The effective absorption amounts of nitrogen, phosphorus and potassium are analyzed according to the fertilizer demanded by the pepper, the contents of the nitrogen, phosphorus and calcium in the production process are regulated and matched, and the potassium component and other minor element compounds are added, so that the prepared combined-state compound fertilizer can maximally satisfy the demands of pepper and can be completely absorbed by the pepper (the absorption rate is up to 96.1%), thereby lowering the overhigh cost due to improper element matching in the compound fertilizer production and further avoiding the environment pollution due to solidification of the compound fertilizer since excessive elements are added into the soil.

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 calcium hydrogen phosphate by-product pepper. Background technique [0002] Pepper, also known as: Meiluzhi, Pilei, Poware, etc., Latin scientific name: Piper nigrum L belongs to the order Piper, Piperaceae, and Piper are woody climbing vines; pepper fruits contain a variety of amide compounds, which can dispel fishy smell and detoxify It is greasy, helps digestion, increases appetite, treats wind and cold, invigorates the spleen and stomach, detoxifies shrimp, and has a wide range of uses. At present, the cultivation technology of pepper is relatively common. The compound fertilizer used in the cultivation process is the traditional compound fertilizer, that is, a variety of chemical fertilizers are used to prepare according to a certain ratio, such as potassium dihydrogen phosphate and ammonium dihydrogen phos...

AI Technical Summary

Problems solved by technology

[0008] However, in the production process of calcium hydrogen phosphate products, the mother liquor containing a large amount of nitrogen and phosphorus raw materials is often discharged into the environment, causing environmental pollution. Although the Environmental Protection Bureau currently controls the discharge of pollution indicators in chemical industry waste liquid, but It is still difficult to avoid the improper treatment of waste liquid in the chemical process and discharge to remove the pollution of the environment. The main reason for this is the insufficient utilization of the waste liquid in the chemical process. The nutritional elements required in the process, the analysis and exploration of the absorption of nitrogen, phosphorus, potassium and other trace and medium elements by pepper, combined with the preparation process of calcium hydrogen phosphate products, in order to reduce waste liquid discharge, or reduce waste liquid The content of nitrogen, phosphorus and calcium elements can increase the output of calcium hydrogen phosphate products, and the technical problem of insufficient purity of calcium hydrogen phosphate products brought about by the deep crystallization treatment of mother liquor, the preparation process of special fertilizer for pepper and calcium hydrogen phosphate The combination of the preparation process of the product provides a new idea for the preparation process of calcium hydrogen phosphate products and the preparation process of special fertilizer for pepper

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