Apparatus for the production of ammonium sulphate

Claim 1

APPARATUS FOR RECOVING AMMONIUM SULPHATE FROM FLUE GAS WASHING LIQUOR, COMPRISING A PRE-HEATER, MEANS FOR ADDING A QUANTITY OF ACID TO SAID WASHING LIQUOR, MEANS FOR PASSING SAID WASHING LIQUOR THROUGH SAID PREHEATER AFTER ACIDIFICATION THEREOF, A REACTION VESSEL HAVING A REACTION ZONE, MEANS FOR APPLYING HEAT TO SAID REACTION VESSEL, MEANS FOR SUPPLYING SAID ACIDIFIED WASHING LIQUOR FROM SAID PRE-HEATER TO SAID REACTION ZONE IN SAID REACTION VESSEL TO CONVERT SAID LIQUOR INTO AMMONIUM SULPHATE AND SULPHUR, AND MEANS FOR RECIRCULATING A PORTION OF SAID CONVERTED LIQUOR BACK THROUGH SAID REACTION ZONE WHEREBY TO INCREASE THE ACIDITY OF THE LIQUOR UNDERGOING CONVERSION THEREIN, SAID REACTION VESSEL COMPRISING A REACTION TUBE HAVING A VENTURI AT THE INLET END THEREOF SAID MEANS FOR SUPPLYING ACIDIFIED WASHING LIQUOR DELIVERING DIRECTLY TO SAID VENTURI, AND A PLURALITY OF RETURN TUBES DISPOSED IN EQUISPACED RELATION AROUND SAID REACTION TUBE, A BAFFLE PLATE DISPOSED ADJACENT THAT END OF SAID REACTION TUBE REMOTE FROM THE VENTURI THEREIN AND AN OUTLET ADJACENT THE SIDE OF THE BAFFLE PLATE REMOTE FROM THE REACTION TUBE AND BELOW SAID BAFFLE PLATE, LIQUID BETWEEN SAID BAFFLE PLATE AND THE ADJACENT END OF THE REACTION TUBE BEING DRAWN THROUGH SAID RETURN TUBES BACK TO THE VENTURI END OF THE REACTION TUBE UNDER THE INFLUENCE OF THE PRESSURE DROP IN SAID VENTURI CAUSED BY THE PASSAGE OF SAID ACIDIFIED WASHING LIQUOR THERETHROUGH.