Weiyuan Chemical --- tubular reactor

Fertilizer production of high-end energy-saving technologies - acid method without filler granulation technology with the rapid development of new agricultural technologies and farmers fertilization levels and increase the requirements, the current conventional fertilizer contains a filler by the presence of dissolved residues , disintegrating poor solubility product color color significantly affected by the filler, while the fertilizer production process contains a filler by the greater impact of raw materials, we have been unable to meet the increasingly demanding market for product quality and production of technology Claim. Based on this, Xinxiang City Weiyuan Chemical Technology Co., Ltd. based on traditional agglomeration method developed on acid-free filler granulation of new technology, which not only solved the existence of traditional fertilizer product quality defects and production problems, and will upgrade traditional fertilizer production to the composite level, greatly improving the quality and market competitiveness, while raw material costs, coal, electricity consumption decreased, production capacity and economic efficiency improved significantly. First, the main technical features of acid-free filler granulation method of new technology 1, the low price of basic chemical raw materials sulfuric acid, ammonia is introduced into the fertilizer production, fertilizer production will enhance the simple to the composite level, upgrade product quality and equipment features. 2, full use of the chemical reaction heat between the gas feed ammonia and sulfuric acid, MAP and other granulated material temperature elevated to preferred granulation temperature of 75-85 ℃, while the use of ammonia as a gas conditioning agent, the granulated material The pH is controlled between 6.0-6.3, as the ball was significantly improved, and more than 80%. 3, due to take full advantage of the chemical reaction heat temperature increase granulation, granulation material moisture is low ≤2.5%, can achieve some dried product moisture ≤1.5%, greatly easing the caking tendencies. 4, the system returns the screening material to use hot, hot big grain crushing process, make full use of the system heat, increase production capacity and strength of the production unit. 5, using the new self-cleaning screening devices, large grain crusher, anti-clogging large angle belt hoist and other special equipment, to improve the stability of the apparatus for efficient preparation of the entire production system. 6, high-efficiency coolers and water cooling to cool new technology envelope as much as possible to reduce packaging temperature, thermal agglomeration problem solving. 7, the production site and production dust exhaust gas treatment using a cyclone, gravity settling chamber and scrubber water bath and other multi-level process measures to achieve emissions standards and clean and civilized production. 8, ingredients and production processes using DCS distributed control computer, granulated Microcomputer automatic control, stable technology, stable production conditions and product quality. 9, without the use of a solid urea melt unit and two-stage drying process, can produce more than N≥25% of nitrogen products. Second, the acid method without filler main characteristics of a new technology granulation, product color white bright, free from fillers affect the appearance of colors. 2, instant and efficient products are all insoluble residue. 3, the product moisture ≤1.5%, particle strength ≥25N, smooth and rounded particles do not agglomerate. 4, nutrient products are stable, single nutrient error can be controlled below 0.5%. Third, the acid granulation method without filler features a new technology to run the device does not scarring, non-blocking, can achieve long period of continuous and stable operation. 2, equipment selection matching reasonable, large-scale production strength, compared with the same type of host equipment, production capacity increased by more than 25%. 3, the process is simple and convenient maintenance operations and production management, can achieve discharge standards and clean and civilized production. 4. Investment most economical operation, compared with the same type of fixed assets can be reduced by 30%, coal consumption, electricity consumption decreased by more than 25%. Fourth, the utility of the technology has been successfully put into operation in several sets of compound fertilizer plant in the country, and highlights the clear advantage. The technology is applicable to upgrade compound fertilizer, ammonium phosphate and other means of technology, but also for technological innovation for small and medium fertilizer unit.