PHOSPHORIC ACID / P2O5 FILTRATION SYSTEMS

PROCESS INFORMATION
Filter can be used in dry process (electric furnace) described below; the phosphate rock is sintered or nodulized to facilitate escape of phosphorus vapours in the furnace and to prevent the blowing over of dust. Aftr sintering, the material is sized and the fines retuned to the sintering machine. Coke and sand are added and the materials charged to the electric furnace. The temperature of the furnace is approximatively 2400ºF.

The gas containing P and CO are withdrawn with a fan. In some plants, air is admitted here and P is burned directly to P205 with large wastage of CO. In the two step method gases are cooled and the condensed P is collected under water and transported in tank cars to consumption centers where it is burned. This method permits to use CO as fuel.

REACTION: 4P + 50² - 2P²0⁵
P205 + 3H₂0 - 2H3P04

PROBLEMS TO SOLVE
Air Pollution

DESIGN SOLUTION
Type F(2) TGW15 SS316 low carbon structure and glass fibre.
Check for chloride or fluoride attack - if so use deionezed water for process or PVC structure; also other fibre material may be used.




Other Applications
ASPHALT CHLORINE PRODUCTION - WET CHLORINE CHLORINE PRODUCTION / DRY CHLORINE CHLORINE PRODUCTION / HYDROGEN STREAM CHLORINE PRODUCTION / NaOH STREAM COMPRESSED GAS / AIR DETERGENT SULPHONATION / AFTER THE SULPHONATION REACTOR DETERGENT SULPHONATION / BEFORE THE SULPHONATION REACTOR DETERGENT SULPHONATION / HOW ‘STAR’ CANDLES EFFICIENTLY HANDLED HIGH MIST LOADS, SAVING ENERGY AND COST HYDROCHLORIC ACID NITRIC ACID / INLET AIR AND NH3 FILTERS,NITRIC ACID / INLET AIR AND NH3 FILTERS NITRIC ACID / PLATINUM CATALYST OR PALLADIUM DUST RECOVERY NITROGEN FERTILISERS / AMMONIUM NITRATE – NEUTRALISER & EVAPORATOR NITROGEN FERTILISERS / AMMONIUM NITRATE – PRILLING TOWER NITROGEN FERTILISERS / AMMONIUM NITRATE PRILLING TOWER – SELECTIVE FILTRATION OF ONLY MOST HEAVILY CONTAMINATED AIR NITROGEN FERTILISERS / UREA – PRILLING TOWER NITROGEN FERTILISERS / UREA –EVAPORATOR NITROGEN FERTILISERS / UREA PRILLING TOWER DEMISTERS & COALESCERS FOR LOW PRESSURE LOSS FILTRATION AND CONCURRENT NH3 ABSORBTION. NON-FERROUS METALS PRODUCTION - Process Tanks OIL REFINING - FCC Fractionator and Pipestill PHOSPHATE FERTILISER PRODUCTION - P2O5 Separation from Phosphate Slurry PHOSPHATE FERTILISER PRODUCTION - Reactor Tanks PHOSPHORIC ACID / WAGON LOADING - FUGITIVE EMISSIONS CONTROL PVC / VINYL COATING - Direct heated oven / Indirect heated oven +lacquer / chlorinated additives PVC / VINYL COATING - Indirect heated oven and no lacquer or chlorinated additives SO3 / OLEUM TANK VENTS SULPHURIC ACID / ACID CONCENTRATOR SULPHURIC ACID / ACID DISTRIBUTION SULPHURIC ACID / CROSS FLOW STRIPPER SULPHURIC ACID / DRYING TOWER SULPHURIC ACID / FINAL ABSORBTION TOWER IN SPENT ACID PLANTS SULPHURIC ACID / FINAL ABSORBTION TOWER OR SINGLE ABSORBTION TOWER SULPHURIC ACID / HEAT RECOVERY DESIGN PLANT INTERMEDIATE ABSORBTION TOWER SULPHURIC ACID / INTERMEDIATE ABSORBTION TOWER SULPHURIC ACID / Mercury Removal Tower SULPHURIC ACID / OLEUM UPSTREAM OF INTERMEDIATE ABSORBTION TOWER OR FINAL ABSORBTION TOWER OR SINGLE ABSORBTION TOWER SULPHURIC ACID PLANT SO2 TAIL GAS / NH3 / SO2 TAIL GAS SCRUBBING TOWER