Method of producing a mixed liquid fertilizer containing nitrogen and phosphorus

Claim 1

THE METHOD OF PRODUCING A MIXED LIQUID FERTILIZER CONTAINING NITROGEN AND PHOSPHORUS IN A PREDETERMINED RATIO AND IN A CONTINUOUS OPERATION, COMPRISING (A) FEEDING PHOSPHORIC ACID UNDER POSITIVE PRESSURE IN A CONTINUOUS STREAM AT A SUBSTANTIALLY UNIFORM RATE TO A REACTION ZONE, (B) FEEDING WATER IN A CONTINUOUS STREAM AT A CONTROLLABLE RATE AND UNDER POSITIVE PRESSURE TO THE REACTION ZONE FOR ADMIXTURE WITH THE PHOSPHORIC ACID IN A PREDETERMINED RATIO TO PROVIDE FOR A PREDETERMINED CONCENTRATION OF PHOSPHORUS IN SOLUTION IN THE SYSTEM, (C) FEEDING LIQUID AMMONIA IN A CONTINUOUS STREAM AT A RATE CONTROLLED BY THE PH OF THE FINAL PRODUCT BY UNDER POSITIVE PRESSURE TO THE REACTION ZONE FOR REACTION WITH THE DILUTED PHOSPHORIC ACID SOLUTION TO PRODUCE AMMONIUM PHOSPHATE, (C'') EXPANDING THE MIXTURE OF MATERIALS INTO A REACTION VESSEL FOR COMPLETION OF THE REACTION, (C") RECOMPRESSING THE MIXTURE AFTER REACTION HAS BEEN COMPLETED, (D) EXTRACTING HEAT OF REACTION FROM THE REACTION PRODUCT ISSUING FROM THE REACTION VESSEL TO REDUCE THE TEMPERATURE OF THE RACTION PRODUCT TO BELOW THE TEMPERATURE FOR VOLATILIZATION OF ANY OF THE COMPONENTS, AND (E) SEPARATING THE COOLED REACTION PRODUCT INTO A PRODUCT PORTION AND A PORTION WHICH IS RECYCLED THROUGH THE SYSTEM, THE SAID EXTRACTING OF THE HEAT OF REACTION BEING ACCOMPLISHED AT LEAST IN PART BY ADMIXING THE RECYCLED PORTION WITH THE PARTIALLY REACTED MIXTURE ISSUING FROM THE REACTION ZONE AND PRIOR TO EXPANSION INTO THE REACTION VESSEL FOR IMMEDIATE REDUCTION IN TEMPERATURE.

Claim 2

THE METHOD OF PRODUCING A MIXED LIQUID FERTILIZER CONTAINING NITROGEN AND PHOSPHORUS IN A PREDETERMINED RATIO AND IN A CONTINUOUS OPERATION, COMPRISING (A) FEEDING PHOSPHORIC ACID UNDER POSITIVE PRESSURE IN A CONTINUOUS STREAM AT A SUBSTANTIALLY UNIFORM RATE TO A REACTION ZONE, (B) FEEDING WATER IN A CONTINUOUS STREAM AT A CONTROLLABLE RATE AND UNDER POSITIVE PRESSURE TO THE REACTION ZONE FOR ADMIXTURE WITH THE PHOSPHORIC ACID IN A PREDETERMINED RATIO TO PROVIDE FOR A PREDETERMINED CONCENTRATION OF PHOSPHORUS IN SOLUTION IN THE SYSTEM, (C) FEEDING LIQUID AMMONIA IN A CONTINUOUS STREAM AT A RATE CONTROLLED BY THE PH OF THE FINAL PRODUCT BY UNDER POSITIVE PRESSURE TO THE REACTION ZONE FOR REACTION WITH THE DILUTED PHOSPHORIC ACID SOLUTION TO PRODUCE AMMONIUM PHOSPHATE, (C'') EXPANDING THE MIXTURE OF MATERIALS INTO A REACTION VESSEL FOR COMPLETION OF THE REACTION, (C") RECOMPRESSING THE MIXTURE AFTER REACTION HAS BEEN COMPLETED, (D) EXTRACTING HEAT OF REACTION FROM THE REACTION PRODUCT ISSUING FROM THE REACTION VESSEL TO REDUCE THE TEMPERATURE OF THE RACTION PRODUCT TO BELOW THE TEMPERATURE FOR VOLATILIZATION OF ANY OF THE COMPONENTS, AND (E) SEPARATING THE COOLED REACTION PRODUCT INTO A PRODUCT PORTION AND A PORTION WHICH IS RECYCLED THROUGH THE SYSTEM, THE SAID EXTRACTING OF THE HEAT OF REACTION BEING ACCOMPLISHED AT LEAST IN PART BY ADMIXING THE RECYCLED PORTION WITH THE PARTIALLY REACTED MIXTURE ISSUING FROM THE REACTION ZONE AND PRIOR TO EXPANSION INTO THE REACTION VESSEL FOR IMMEDIATE REDUCTION IN TEMPERATURE.