Hazardous or toxic waste destruction or containment – Containment – Solidification – vitrification – or cementation
Patent
1995-06-14
1996-10-29
Neuder, William P.
Hazardous or toxic waste destruction or containment
Containment
Solidification, vitrification, or cementation
405128, 75670, C22B 4300
Patent
active
055691544
ABSTRACT:
A method for the removal of mercury from soil, wherein the soil has been contaminated with mercury. The method comprises the following steps. Soil is added to one end of an internally fired hollow screw desorber under a vacuum in the range of from about 15 inches of mercury to about 30 inches of mercury. The soil is moved from the one end of the internally fired hollow screw desorber to another end of the desorber and the temperature of the soil is increased in the desorber as it moves from the one end of the desorber to the other end, wherein the temperature of the soil is increased from a temperature in the range of from about ambient to about 150.degree. F. to a temperature in the range of from about 800.degree. F, to about 1500.degree. F. A mercury vapor is produced in the internally fired hollow screw desorber. The soil is removed from the other end of the desorber while the mercury vapor is removed from the internally fired hollow screw desorber. Mercury is then recovered from the mercury vapor.
REFERENCES:
patent: 5209604 (1993-05-01), Chou
patent: 5300137 (1994-04-01), Weyand et al.
Kessler Richard M.
Neuder William P.
LandOfFree
Method and apparatus for removing mercury from mercury-contamina does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for removing mercury from mercury-contamina, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for removing mercury from mercury-contamina will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1782062