An optimized wet process for preparing phosphoric acid features that a settling step is additionally used between acidolysis step and liquid-solid seqaration step. The material from acidolysis tank is first settled and most materials extracted from different settled layer come into liquid-solid separation step. Its advantages are low solid content and high quality of the finished phosphoric acid ,high recovery rate of P2O5, and increasing the production power of liquid-solid separator by 20% or more.

Title
Optimized wet process for production of sulphuric acid
Application Number
96117727
Publication Number
1178192
Application Date
September 27, 1996
Publication Date
April 8, 1998
Inventor
Feng Licheng
Zhang Yunxiang
Liang Mingzheng
Agent
lv jianbeng
Assignee
Sichuan Union Univ
IPC
C01B 25/235
C01B 25/22