PROCESS FOR TREATING AN AQUEOUS MEDIUM CONTAINING PHOSPHATE SALT AND ORGANIC COMPOUNDS

摘要

THE INVENTION RELATES TO A PROCESS FOR PREPARING NITRIC ACID BY TREATING AN AQUEOUS MEDIUM CONTAINING ORGANIC COMPOUNDS AND PHOSPHATE, SAID PROCESS COMPRISING: FEEDING THE AQUEOUS MEDIUM TO A NITRIC ACID SYNTHESIS ZONE; FORMING NITRIC ACID BY CONTACTING THE AQUEOUS MEDIUM WITH A GASEOUS MEDIUM IN SAID NITRIC ACID SYNTHESIS ZONE, SAID GASEOUS MEDIUM CONTAINING NO2; DISCHARGING AN OFF-GAS FROM SAID NITRIC ACID SYNTHESIS ZONE; WHEREIN THE TOTAL ORGANIC CARBON CONCENTRATION IN THE AQUEOUS MEDIUM ENTERING THE NITRIC ACID SYNTHESIS ZONE IS LESS THAN 0.03 WT. %.