Patents Assigned to Pedro B. de Macedo
  • Method for vitrifying ash
    Patent number: 5430236
    Abstract: By changing the additives to an off-gas system in an incinerator bag house, by replacing part of a normally added calcium compound with a sodium compound, one can reduce the amount of sodium compound needed for a combined off-gas from incineration and glass melting system, reduce the amount of glass produced for a given amount of waste to be incinerated, and thereby reduce the cost of installing a glass melter and the cost of energy (electricity) needed to produce glass.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: July 4, 1995
    Assignees: Pedro B. de Macedo, Theodore A. Litovitz
    Inventors: Pedro B. de Macedo, Hamid Hojaji, Isabelle S. Muller