SULPHURIC ACID PLANT SO2 TAIL GAS / NH3 / SO2 TAIL GAS SCRUBBING TOWER

PROCESS INFORMATION
The SO2 conversion rate of single absorbtion plants is lower than double absorbtion, and many single absorbtion plants installed tail gas scrubbers to reduce this SO2 content rather than convert the plant to double absorbtion.After exiting the absorber tower, the gas enters a scrubber tower where ammonia ( NH3 ) is injected and contacts the SO2. Ammonium Sulphite and Bi-sulphite are formed and some of these salts are entrained in the exit air. These salts are soluble, but can be emitted in quite large volumes,e.g. 2,000mg/m3 and are generally < 3 microns in size.

PROBLEMS TO SOLVE
Air pollutionPrevent blockage of fibre bed by salts solidification.Occasional risk of weak acid mist emission

DESIGN SOLUTION

• High Efficiency, Brownian Diffusion ‘Becofil’ Candle Filters, hanging type HT or standing type F, with Glass Fibre elements and Polypropylene or GRP/FRP structure.
  
  +Irrigation spray system to wash fibre when pressure loss increase indicates blockage is happening.
  
  
  
  
  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 / P2O5 FILTRATION SYSTEMS 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