Method for hazardous waste removal and neutralization

Patent 5022897 Issued on June 11, 1991. Estimated Expiration Date:

November 22, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2838881

3041808

3092478

3245769

3397972

3573940

Electrolytic monocarboxylation of activated olefins
Patent #: 4028201
Issued on: 06/07/1977
Inventor: Tyssee

Method of and apparatus for melting of glass
Patent #: 4029489
Issued on: 06/14/1977
Inventor: Froberg , et al.

Method and apparatus for refining glass in a melting tank
Patent #: 4046546
Issued on: 09/06/1977
Inventor: Hynd

Process and apparatus for treatment of exhaust gases from glass melting furnaces
Patent #: 4208201
Issued on: 06/17/1980
Inventor: Rueck

More ...

Inventors

Assignee

Application

No. 440899 filed on 11/22/1989

US Classes:

95/279, By use of gas55/341.1, MULTIPLE BAG TYPE FILTERS IN CHAMBER95/282, By mechanical manipulation95/285, Coated or chemically treated filter96/373, Solid or vaporized solid241/22Application of solids to material

Examiners

Primary: Nozick, Bernard

Attorney, Agent or Firm

Curtis, Morris & Safford

Foreign Patent References

1501866 GB 02/22/1978

International Class

B01D 046/00

Abstract

A method of coating a filter medium in a flowing gaseous stream, the method comprising: directing a gas stream along a feed path; combining with said gas stream a multiplicity of finished glass dust particles; positioning a fibrous filter medium along said feed path downstream of the point at which the glass dust particles are combined with said stream, the glass dust particles forming a coating on said filter medium to assist in the capture thereon of hazardous waste material in said stream, when said stream contains such material; maintaining the temperature of the gas stream below the softening point of the glass particles; and intermittently removing the particulate coating material and any such hazardous waste material from the filter medium and collecting the same; and a system for accomplishing the same.