NITRIC ACID / PLATINUM CATALYST OR PALLADIUM DUST RECOVERY
NH3 is oxidised with air on catalyst to form NO at high temperature (700 – 1000 °C ), in a quick exothermic reaction. After cooling, NO is oxidised by excess air to give NO2. This oxidation continues into the...
learn more »
NITROGEN FERTILISERS / AMMONIUM NITRATE – GRANULATOR DRYER
Ammonium Nitrate (NH4NO3) is granulated then dried as a final process stage.
The drying process emits both Ammonium Nitrate dust and Ammonia at appx. 50 °C :
Typical Inlet dust load: 15,000 to 20,000 mg/Nm3 Ammonium Nitrate prills
Typical Inlet...
learn more »
NITROGEN FERTILISERS / UREA GRANULATOR SCRUBBER
Urea solution is granulated then dried as a final process stage. There are various process providers, such as Toyo and Uhde, some of which involve fluidised bed technology.
The process emits both Urea dust and Ammonia:
Typical Inlet Urea dust load...
learn more »
PHOSPHATE FERTILIZER PRODUCTION – PHOSPHORIC ACID / FUME SCRUBBERS
Depending on the process technology and the source of the emission, the nature of the emissions (content quantity and type of contaminant) determines the best design of scrubber in each case. HF, H2FiS6 (FSA), P2O5 and NH3 are the...
learn more »
PHOSPHORIC ACID / SCRUBBER EXIT DROPLET SEPARATORS
Most Air Scrubbers treating gas emissions to atmosphere in Phosphoric Fertiliser plants (MAP, DAP, NPK etc) have a Chevron Vane type or a mesh type droplet separator on the exit to catch liquid droplets.
These Chevron Vanes and mesh pads can block, and need replacing from...
learn more »
PHOSPHORIC ACID / WAGON LOADING – FUGITIVE EMISSIONS CONTROL
Product Loading Stations transfer Phosphorous to (railway) wagons, and this generates both P4 dust and P2O5 vapours, which escape into the atmosphere.
Phosphorous and Phosphoric Acid particles come from the air around the product transportation & loading operation...
learn more »
PHOSPHATE FERTILISER PRODUCTION – Reactor Tanks
Phosphate rock is processed in reactor tanks for flotation.
Other process reactions are also done in tanks with the aid of agitating equipment.
PROBLEMS TO SOLVE
Improving the efficiency of the reaction / mixing / dispersal / sedimentation by optimising the agitator...
learn more »
PHOSPHATE FERTILISER PRODUCTION – P2O5 Separation from Phosphate Slurry
Phosphoric Acid is extracted from Phosphate slurry by wash watering it on a rotating table vacuum filter, where the P2O5 content is drawn off by vacuum through the meshes on the table, and through drainage pipes underneath. The residual...
learn more »
PHOSPHATE FERTILISER INDUSTRY
Begg Cousland Envirotec have a close collaboration with Lebracs Rubber in the Phosphate Fertiliser sector, where the service conditions are stringent with elevated temperature of up to 110 ºC, high pressure and Vacuum service. You can source these materials though us also.
Lebracs Rubber has a range...
learn more »
Chlorine Production – Wet Chlorine
Electrolysis of brines with chlorine production at the anode and hydrogen together with sodium or potassium hydroxide at the cathode.
Types of cells:
Diaphragm membrane
Mercury
Diaphragm Cell
The diaphragm cells contain a porous asbestos diaphragm to separate the anode from the...
learn more »