Refuse pyrolysis
AssigneeHolter Gesellschaft fur Patentverwertungsverfahren mbH
InventorsHeinz Holter, Heinz Gresch, Heinrich Igelbuscher
Life of this patent
Estimating the term…
Abstract
Organic refuse is pyrolyzed to form disposable solids and gas. The gas is washed at a temperature well above 100.degree. C. with wash oil, which is recirculated. Spent wash oil is pyrolyzed with contaminants and further organic refuse. The washed gas is filtered through sorption means to remove acid and or other noxious gases therefrom before being cooled well below 100.degree. C. to condense water vapor and other constituents having boiling points within the range of from, e.g., 75.degree. to 150.degree. C. After separating the resulting condensate, thus-purified combustion gas is used, e.g., as a fuel source for the organic-refuse pyrolysis.
Claims29
A two-stage process for purifying noxious-component-containing pyrolysis gas, having a temperature in excess of 600.degree. C., which comprises:
- (a) concurrently washing and substantially cooling the pyrolysis gas with washing oil to separate virtually only liquids having a boiling point in excess of the dew point of water and solids therefrom and b) contacting the washed and cooled pyrolysis gas with dry sorption agent to separate noxious gaseous components therefrom while maintaining the temperature of the pyrolysis gas above the dew point of water.
Dependencies are inferred from the claim text.