cdb
Chemical
- Mar 7, 2002
- 2
All,
In the process, H2SO4 is used as a reactant and formation of the final product produces large quantities of ammonium bisulfate (NH4HS04). A "waste" stream comprised of NH4SO4 + organics + (excess)H2SO4 is sent to a kettle where live steam is sparged into the mixture to boil off any trapped product and organics. Tars are formed readily in the vessel and are an extensive cost($$ and enviromentally) when shutdown and cleaning are required. A spare vessel is always on standby.
I would value information in the any of the following areas:
1. Chemical solutions which hinder the formation of such tars??? And are heavy enough to partition with the heavies in the vessel
2. Adequate filter materials for continuous filtering(i.e. polypropylene, polyethylene)??
3. Separation techniques other than the kettle approach?
Thanks for the consideration.
In the process, H2SO4 is used as a reactant and formation of the final product produces large quantities of ammonium bisulfate (NH4HS04). A "waste" stream comprised of NH4SO4 + organics + (excess)H2SO4 is sent to a kettle where live steam is sparged into the mixture to boil off any trapped product and organics. Tars are formed readily in the vessel and are an extensive cost($$ and enviromentally) when shutdown and cleaning are required. A spare vessel is always on standby.
I would value information in the any of the following areas:
1. Chemical solutions which hinder the formation of such tars??? And are heavy enough to partition with the heavies in the vessel
2. Adequate filter materials for continuous filtering(i.e. polypropylene, polyethylene)??
3. Separation techniques other than the kettle approach?
Thanks for the consideration.
