WG Chem
Chemical
- Mar 13, 2017
- 6
Dear colleagues,
Short and straight to the point question: in your expertize or knowledge, what are the best consolidated industrial processes to oxidize Ferrous Chloride in HCl solution to Ferric Chloride at an average productivity range of 500-1000 kg/h?
Long version: I'll have a chemical process that will use about 20 tons/day of Ferric Chloride 36-40% solution (Fe3+) as oxidant. This process generates a huge amount of Ferrous Chloride (Fe2+) wastewater whose initial treatment proposal is a simple precipitation with lime, coagulation/flocculation, filtering and drying of sludge and evaporation of clarified liquid. This is a not very cheap process due to high amount of ferrous sludge generation, but is economically acceptable due to high aggregated value of product itself, simplicity to assemble and put in operation in a short project schedule and necessity to reduce strategical dependency of external destination of wastes.
Short term concern adressed, but still is a huge waste of money in the long run, so i'm researching for alternatives to re-oxidize some of the Ferrous Chloride back to Ferric Chloride. The wastewater stream has very low amount of organics (COD of less than 20.000 ppm, and the oxidation reaction of the product is fast and selective enough to work with recycled Ferric Chloride with impurities from the most commom recovery routes that i researched. The problem is that the technical literature is vast on this subject and i would like to focus the energy researching and testing with the already known and consolidated routes.
Thank you all in advance
Best Regards
Short and straight to the point question: in your expertize or knowledge, what are the best consolidated industrial processes to oxidize Ferrous Chloride in HCl solution to Ferric Chloride at an average productivity range of 500-1000 kg/h?
Long version: I'll have a chemical process that will use about 20 tons/day of Ferric Chloride 36-40% solution (Fe3+) as oxidant. This process generates a huge amount of Ferrous Chloride (Fe2+) wastewater whose initial treatment proposal is a simple precipitation with lime, coagulation/flocculation, filtering and drying of sludge and evaporation of clarified liquid. This is a not very cheap process due to high amount of ferrous sludge generation, but is economically acceptable due to high aggregated value of product itself, simplicity to assemble and put in operation in a short project schedule and necessity to reduce strategical dependency of external destination of wastes.
Short term concern adressed, but still is a huge waste of money in the long run, so i'm researching for alternatives to re-oxidize some of the Ferrous Chloride back to Ferric Chloride. The wastewater stream has very low amount of organics (COD of less than 20.000 ppm, and the oxidation reaction of the product is fast and selective enough to work with recycled Ferric Chloride with impurities from the most commom recovery routes that i researched. The problem is that the technical literature is vast on this subject and i would like to focus the energy researching and testing with the already known and consolidated routes.
Thank you all in advance
Best Regards