Patents by Inventor Martin R. Zweifel

Martin R. Zweifel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5086715
    Abstract: The flue gases formed in the combustion chamber of the incinerator furnace, after they have reached a temperature of about 450.degree. C., are brought to a temperature of 200.degree.-250.degree. C. by shock-type cooling. Before this shock-cooling (quenching), heat recovery from the flue gases is carried out in a high-temperature stage from 1000.degree.-1200.degree. C. to about 450.degree. C. and, after the shock-cooling, in a low-temperature stage from 200.degree.-250.degree. C. to about 150.degree. C. As a result, a de novo synthesis is avoided in which dioxins and furans are formed from the components of the flue gases and the fly ash.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: February 11, 1992
    Assignee: W&E Umwelttechnik AG
    Inventors: Markus E. Burgin, Martin R. Zweifel
  • Patent number: 5003893
    Abstract: In a method and a plant for the combustion of special waste, a combustion chamber is connected downstream of a tubular revolving furnace which receives waste to be burnt. A part of the special refuse, particularly gaseous and liquid refuse is introduced into the combustion chamber and is burnt therein by a burner. A revolving tube of the revolving furnace opens into a lower conically downwardly tapering area of the combustion chamber which is constructed as an upright tube. The flue gases produced in the tubular revolving furnace flow from the bottom of the top of the combustion chamber together with the flue gases produced in the combustion chamber. Secondary air is also introduced into the combustion chamber so that there is ensured an extremely good, complete burning up of the waste to the end of the combustion chamber. Due to the fact that part of the special waste is burnt-out in the combustion chamber, the dimensions of the tubular revolving furnace can be reduced.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: April 2, 1991
    Inventor: Martin R. Zweifel