Ammonium Sulphate Plants
Highlights
Crystallization of ammonium sulphate in modern DTB (Draft Tube Baffle) crystallisers under strictly controlled conditions to produce large crystals with a close Crystal Size Distribution.
Feedstocks
- Waste liquors, such as those from the acrylonitrile, caprolactam and methyl methacrylate production industries
- A combination of the above waste liquors
- Directly from liquid ammonia and sulphuric acid
Process Characteristics
- Large crystals with a narrow size spectrum are produced
- Fines destruction in external heat exchanger
- Minimal attrition of crystals in the circulation system
- Selective crystal removal via salt leg
- Fluid bed drier / cooler for exact moisture level in product
- Product size range ensured by double screen sieving machine
Plant Characteristics
- Line capacities : up to 300 MTPD
- Multiple lines for large capacities and flexibility
- Evaporation : multiple effect or vapour recompression with multi-stage fans
- Special feeder system ensures constant feed rate to centrifuge

Centrifuge

Vibrating Fluid Bed Drier