Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier
Reexamination Certificate
2000-05-08
2001-11-06
Tran, Hien (Department: 1764)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Waste gas purifier
C422S170000, C422S171000, C423S266000, C423S290000, C423S299000
Reexamination Certificate
active
06312649
ABSTRACT:
FIELD OF INVENTION
This invention relates generally to apparatus for removing odors from gaseous emissions and more particularly to an odor control system for use in the treatment of effluents from composting facilities.
BACKGROUND OF THE INVENTION
Industrial processes such as food processing, chemical production and solid waste composting have long been plagued by the generation of odors and the release of volatile organic compounds (VOC's). While many methods of chemical scrubbing and air treatment exist, few, if any are both effective and affordable.
The present invention is, in part, an integration of technologies housed in a readily available and affordable structure, such for example as a concrete farm silo. The incorporation of multiple odor controlling techniques into a compact cylindrical structure results in an economical and highly efficient odor reducing system which when combined with a unique air venting system results in both dilution and dispersion of offensive and noxious odors.
SUMMARY OF THE INVENTION
The invention in its fully integrated form comprises a concrete silo which in the context of the invention acts as a chimney having a nominal height of 50 to 100 feet. Such a structure acts to dilute and disperse malodorous effluents, a function which has long been understood and which for decades was the sole instrument of pollution remediation used by power plants and other chemical and dust generators. Mounted on top of the silo is a helicopter size fan. The addition of this element effectively adds 400 to 500 feet of height to the stack by producing a vertical wind column extending 20 to 30 fan diameters above the fan blades. Additionally the fan can be designed to produce up to 850,000 cubic feet per minus (cfm) which will volumetrically dilute the effluents with fresh air as much as twenty times.
The silo, to augment its efficiency in the removal of odors, incorporates multi-layered, packed-bed, wet bioscrubbers. The silo is additionally constructed to include an oxidation chamber. It is well understood that the oxidation of organic compounds is effected most rapidly in a well oxygenated liquid medium. The rapid circulation of the liquid over the packed wet bed scrubber, through which a high rate of air is caused to pass will serve to keep the liquid saturated with oxygen. Since the system as described will generate large volumes of bio-mass the silo is constructed with a lower chamber which serves as a sludge settling tank. The excess biomass will gravitate to the bottom of the chamber where it will be concentrated into a sludge. The sludge in turn is siphoned off and treated as a biosolid.
REFERENCES:
patent: 4671807 (1987-06-01), Charlton
patent: 5236677 (1993-08-01), Torres-Cardona et al.
patent: 5660615 (1997-08-01), Neumann et al.
Bedminster AB
Tran Hien
Zeyher Stanley H.
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