Process for decontaminating suspensions containing silt, polluta

Details Process for decontaminating suspensions containing silt, polluta Process for decontaminating suspensions containing silt, polluta

1998-02-19

2000-05-09

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75742, 210774, C22B 4300

Patent

active

060598557

ABSTRACT:
In a process for decontaminating suspensions containing silt, pollutants and water, particularly mercury and hydrocarbon pollutants, the suspensions are heated under pressure to boiling temperature, then passed through a throttling device wherein the pressure is reduced so that, by flashing, a three-phase mixture comprising steam, residual water and solids is formed which mixture is then superheated in a pipe reactor whereby the pollutants are enriched in the steam phase, the solids are then separated out of the mixture and the steam phase is condensed for collection of the pollutants with the condensate.

REFERENCES:
patent: 5300137 (1994-04-01), Weyand et al.
patent: 5569154 (1996-10-01), Navetta et al.

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