Sulfur-based ammoniated compound fertilizer production technology
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Potassium chloride and sulfuric acid are added to the reaction tank to heat and react under certain conditions to produce potassium hydrogen sulfate. The escaped hydrogen chloride gas is absorbed by water to produce hydrochloric acid (30%). Potassium hydrogen sulfate and dilute sulfuric acid are produced After mixing, a mixed acid is formed. The mixed acid and liquid ammonia are reacted in a tube reactor in proportion to obtain a slurry containing potassium sulfate, ammonium sulfate, and potassium dihydrogen sulfate. The resulting slurry is sprayed directly to the drum Pellet machine or spray granulation dryer produces potassium sulfate compound fertilizer containing N-P2O5-K2O.
1. The compound fertilizer produced by this process eliminates ammonia pre-neutralization and phosphoric acid concentration, and directly combines the low-temperature conversion of potassium chloride with phosphoric acid production. It has simple operation, low energy consumption, high automation, and adjustable product nitrogen. Features.
2. The existing small-scale ammonium phosphate plant and compound fertilizer plant are expanded, and only the potassium chloride conversion process and hydrogen chloride absorption process can be added to the original pellet process production line.
3, the product does not contain harmful chlorine, uniform particle size, whitening color, and the product is not suitable for counterfeiting.
