Patents Assigned to Esmil-Envirotech, Ltd.
  • Method for incinerating waste sludges
    Patent number: 4159684
    Abstract: Dewatered sewage sludge (i.e. sewage sludge containing e.g. 75% water when dewatered) is incinerated when mixed with coal fines recovered from a wet benification process for coal, the coal fines being in the form of either coal filter cake or ex-lagoon sludge. If the coal fines are added to the sewage sludge before or during dewatering of the latter by filtration, the coal acts as a filter aid. Autothermic combustion of the mixture can be obtained.
    Type: Grant
    Filed: November 23, 1976
    Date of Patent: July 3, 1979
    Assignee: Esmil-Envirotech, Ltd.
    Inventor: William M. Kirkup