申请人:Yara International ASA
公开号:US07837758B2
公开(公告)日:2010-11-23
Method for the production of solid urea ammonium sulphate (UAS) fertilizers from sulphuric acid, ammonia and urea, wherein free ammonia and/or as carbamate to be decomposed from urea production, is reacted with sulphuric acid without substantially decomposing urea in the process stream, where after urea and ammonium sulphate (AS) is mixed and particulated. The point of integration of the ammonium sulphate production in the urea production process is chosen according to the desired product composition. The reaction is carried out in a pipe reactor where the head of the reactor enhanced the chemical reaction between sulphuric acid and ammonia and the urea solution surrounds the ammonium sulphate formation.
从硫酸、氨和尿素生产固体尿素铵硫酸盐(UAS)肥料的方法,其中从尿素生产中分解出的游离氨和/或作为碳酸酯,与硫酸反应而不会在过程流中分解尿素,之后将尿素和硫酸铵(AS)混合并成颗粒。根据所需的产品组成选择铵硫酸生产在尿素生产过程中的集成点。反应在管式反应器中进行,反应器头增强了硫酸和氨之间的化学反应,尿素溶液包围着铵硫酸的形成。