Závody - obecná chemie

1500 MTD FLUIDIZED BED TYPE PROCESS UREA GRANULATION PLANT. IN THIS PROCESS CONCENTRATED UREA SOLUTION INJECTED WITH FORMALDEHYDE IS USED AS FEED STOCK. THE ALDEHYDE ACTING AS A PROCESS AID AND ANTI CAKING AGENT.THE PRODUCT (i.e. UREA GRANULES) WILL HAVE TOTAL NITROGENEOUS COMPOSITION OF 46 WT % MIN. FREE AMMONIA - MAX 50 ppm, IRON - MAX 1.0 ppm, FORMALDEHYDE - MAX 0.55 WT %, BIURET - MAX 1.0 WT% MOISTURE - 0.3 WT %, UREA SIZE (2 - 4 mm) - MIN 92 WT %, pH AT 10% SOLUTION 8 - 10. THE PLANT WAS COMMISSIONED IN JULY 2001 AND WAS SHUT DOWN IN FEBRUARY 2002 - USED FOR LESS THAN A YEAR. HAS BEEN MAINTAINED SINCE SHUT DOWN AND IS IN EXCELLENT CONDITION. CONTROL SYSTEM DCS