A kind of semi-opening double-core casing for reaction spraying in granulation of compound fertilizer by acid method

Abstract

The invention relates to an ammonia-acid method compound fertilizer granulation reaction material-spraying semi-perforated double-core casing pipe. The ammonia-acid method compound fertilizer granulation reaction material-spraying semi-perforated double-core casing pipe comprises a flat-cylindrical reactor shell (11), a sulfuric acid pipe (6), an ammonia pipe (7) and a baffle arranged on the ammonia pipe (7), wherein the sulfuric acid pipe (6) and the ammonia pipe (7) are arranged in parallel inside a reactor; the flat-cylindrical reactor shell (11) is perforated; sulfuric acid and ammonia are input into the reactor via the sulfuric acid pipe (6) and the ammonia pipe (7) respectively for mixing and then uniformly sprayed out from holes formed in the flat-cylindrical reactor shell (11). Compared with the prior art, the ammonia-acid method compound fertilizer granulation reaction material-spraying semi-perforated double-core casing pipe can fully mix and react the sulfuric acid and the liquid ammonia, effectively reduce reaction intensity of the sulfuric acid and the liquid ammonia and greatly reduce workshop environment pollution, influence on worker health, waste in raw materials and the like that are led by dispersion of ammonia gas; a long perforated pipe design ensures uniform spraying of reaction products and facilitates material granulation to ensure product quality of compound fertilizers; meanwhile, the reactor can adapt to width change of flow. Therefore, the ammonia-acid method compound fertilizer granulation reaction material-spraying semi-perforated double-core casing pipe has a good application prospect.

Description

technical field [0001] The invention relates to equipment for compound fertilizer granulation, in particular to a semi-open hole double-core casing used for reaction spraying in compound fertilizer granulation by the amino acid method. Background technique [0002] The production process of compound fertilizer by amino acid method is the mainstream production process widely used by compound fertilizer manufacturers. The process is to send the metered nitrogen fertilizer, phosphate fertilizer, potash fertilizer and binder to the drum granulator for mixing and granulation. At the same time, sulfuric acid and liquid ammonia are added during the granulation process. The heat of reaction keeps the material at a certain temperature and humidity, which facilitates the granulation of the material. The production process of amino acid compound fertilizer has the advantages of high production capacity, low energy consumption, and low operating cost. Sulfuric acid and liquid ammonia ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is exactly to overcome the defective that above-mentioned prior art exists and provide a kind of can make sulfuric acid and ammonia fully react, spray evenly on the powdery material, solve the problem of ammonia dispersion, and improve the efficiency of granulation, Semi-open hole double-core sleeve used for reactive spraying in the granulation of compound fertilizers by the amino acid method to ensure the quality of compound fertilizer products

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