FIELD: agriculture. SUBSTANCE: origin solutions of carbamide and ammonium nitrate after evaporation stage (at increased residual temperature) are fed for mixing. Said carbamide solution comprises 0.2-0.6 mass % of ammonium as impurity, excess of ammonium is to be neutralized during production of fertilizer. Solution of carbamide and/or ammonium nitrate are cooled immediately before mixing, temperature in mixing zone being not more 80-88 C. Cooled solution of ammonium nitrate is acidified by phosphorous and/or nitric acid, its quantity is sufficient for neutralization of excess of free ammonium. Solutions being evaporated are cooled, the process is carried out with the help of heat exchange with boiling mixture of the solutions. EFFECT: improved efficiency of the method. 5 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING LIQUID FERTILIZER AT DECREASED AMMONIUM CONTENT | 1994 |
|
RU2114092C1 |
| METHOD FOR STUDYING COMPOSITION OF NITROGEN-CONTAINING FERTILIZER BASED ON CARBAMIDE AND AMMONIUM NITRATE | 1996 |
|
RU2110058C1 |
| METHOD OF DETERMINATION OF COMPOSITION INDEX OF MIXED CARBAMIDE AND AMMONIUM NITRATE WATER SOLUTION | 1996 |
|
RU2110782C1 |
| METHOD OF PREPARATION OF LIQUID NITROGEN FERTILIZERS | 1994 |
|
RU2090539C1 |
| CONTINUOUS PLANT FOR PRODUCING LIQUID NITROGEN FERTILIZERS | 1994 |
|
RU2088555C1 |
| METHOD OF PREPARING LIQUID NITROGEN FERTILIZERS | 1994 |
|
RU2095335C1 |
| METHOD OF IMPROVING SERVICE PERFORMANCE OF LIQUID UREA AND AMMONIUM NITRATE-BASED FERTILIZER | 1996 |
|
RU2116992C1 |
| METHOD FOR PURIFICATION OF NITROGEN FERTILIZERS IN LIQUID PHASE AGAINST PETROLEUM OILS | 1996 |
|
RU2111936C1 |
| METHOD OF PRODUCING LIQUID NITROGEN-CONTAINING FERTILIZERS | 0 |
|
SU1606503A1 |
| METHOD FOR DETERMINATION OF NITROGEN CONTENT IN LIQUID NITROGEN FERTILIZER BASED ON CARBAMIDE AND AMMONIA SALTPETER | 0 |
|
SU1644026A1 |
