Gas separation: apparatus – Gas and liquid contact apparatus for gas separation... – Gravitational separator for contact liquid
Reexamination Certificate
1997-03-12
2001-07-31
Bushey, C. Scott (Department: 1724)
Gas separation: apparatus
Gas and liquid contact apparatus for gas separation...
Gravitational separator for contact liquid
C096S273000, C096S277000
Reexamination Certificate
active
06267804
ABSTRACT:
TECHNICAL FIELD AND BACKGROUND OF THE INVENTION
This invention relates to a wet gas stripper which utilizes a liquid spray for separating entrained particulate matter, such as traces of acid, methylene chloride, toluene diisocyanate, and other relatively fine powdered substances, from a moving gas stream. The invention is particularly applicable for use in industrial plants which emit hazardous gases.
The presumed operating theory of the invention relates to the generation of negative ions inside a liquid-saturated environment. It is believed that the collision of a liquid, such as water, against a hard surface causes the liquid to lose electrons which then attach to chemical vapors and small particulates, such as smoke, entrained in the moving gas stream to be filtered. This collision creates a turbulent mist which captures and carries the vapors and particulates downwardly to a collection bath. Because the liquid loses electrons, its now positive charge attracts any negatively charged particles to capture the particles. The invention has been tested and proven to effectively remove toxic chemicals, such as methylene chloride, from the moving gas stream, and to further remove odors and particulates such as smoke. The invention further causes oxygenation of liquid as a result of the collision against the hard surface. Once the chemicals are captured in the collection bath, they are oxidized into non-toxic compounds.
SUMMARY OF THE INVENTION
Therefore, it is an object of the invention to provide a wet gas stripper which utilizes a liquid spray for separating entrained particulate matter from a moving gas stream.
It is another object of the invention to provide a wet gas stripper which is capable of oxidizing most hazardous/toxic organics and liquids used in an industrial environment, and converting these organics and liquids into substances that are non-toxic and safe for handling.
It is another object of the invention to provide a wet gas stripper which transforms electrical forces to overcome the high vapor pressures of methylene chloride in order to remove this chemical from the moving gas stream.
It is another object of the invention to provide a wet gas stripper which extracts methylene chloride from within an industrial environment, and converts the methylene chloride into carbon dioxide, water, and benign oxidation products of chlorine.
It is another object of the invention to provide a wet gas stripper which is capable of removing toluene diisocyanate from an industrial environment, and rendering this chemical safe for handling.
It is another object of the invention to provide a wet gas stripper which is capable of removing butylated hydroxy toluene from an industrial environment, and rendering this chemical safe for handling.
It is another object of the invention to provide a wet gas stripper which is capable of removing odors and smoke from an industrial environment.
It is another object of the invention to provide a wet gas stripper which is relatively inexpensive to manufacture and operate.
It is another object of the invention to provide a wet gas stripper which is efficient and relatively easy to maintain.
It is another object of the invention to provide a wet gas stripper which provides a cost effective anti-pollution device that makes significant contribution towards compliance with mandates incorporated in the U.S. Clean Air Act, the U.S. Clean Water Act, the U.S. Resources Conservation & Recovery Act, and the U.S. Occupational & Safety Health Administration.
These and other objects of the present invention are achieved in the preferred embodiments disclosed below by providing a wet gas stripper for separating particulate matter entrained in a moving gas stream. The gas stripper includes a housing having a plurality of walls, and a gas inlet for receiving the moving gas stream into the housing and a gas outlet through which the moving gas stream is exhausted from the housing. A particulate collection area is formed at a base of the housing. A liquid spray element sprays a liquid against at least one of the walls of the housing above the particulate collection area to create a particulate-entraining mist. The mist defines a filtration medium for capturing the particulate matter entrained in the gas stream and carrying the particulate matter to the collection area for removal from the housing.
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Bushey C. Scott
Hopgood, Calimafde Judlowe & Mondolino
TAS Enterprise, LLC.
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