Production method and device of round granular large-particle ammonium sulfate

The invention relates to a method and a device for producing round large-particle ammonium sulfate. The device comprises an adsorption unit, a crystallization unit and a separation unit, and the crystallization unit comprises a crystallizer, a steam recompression system, a circulating mother liquor heater and an acid-base adjusting unit; the separation unit comprises a thickener and a centrifugal drying part; and an overflow surface at the upper end of the thickener is also connected with a boiling surface of the crystallizer through a pipeline. The invention further provides a method for producing large-particle ammonium sulfate through the device. According to the device and the method disclosed by the invention, the steam consumption is saved, and meanwhile, the proportion of ammonium sulfate particles of which the diameters are greater than or equal to 2.0 mm and the yield of large-particle ammonium sulfate are increased. 本发明涉及一种圆粒状大颗粒硫酸铵的生产方法及装置。所述装置包括吸附单元、结晶单元以及分离单元，其中，所述结晶单元包括结晶器、蒸汽再压缩系统、循环母液加热器以及酸碱调节单