Method for the removal and condensation of vapors

摘要

A method for removal and condensation of vapors from within an enclosed space is disclosed. An enclosed space containing hydrocarbonaceous material is surrounded by an insulative permeable layer having a lowering temperature gradient between the inner surface and the outer surfaces. The insulative layer may also be covered by an impermeable layer. Heating the material in the enclosed space causes the formation of vapors at a positive pressure within the enclosed space. Vapors pass through the inner surface of the insulative permeable layer and contact the permeable materials and are condensed by the lowering temperature within the insulative layer. The condensate liquid passes downwardly through the insulative layer and is then collected. The positive pressure within the heated enclosed space and the condensation and lowering of pressure and temperature within the insulative layer serves to draw additional vapors from within the enclosed space into the insulative layer which facilitates condensation and subsequent collection.

主权项

1. A method for removal and condensation of vapors from within an enclosed space comprising:
heating a hydrocarbonaceous material within an enclosed space to form vapors extracted therefrom, said enclosed space being surrounded by an insulative permeable layer having a temperature gradient therein, wherein an inner layer surface defining said enclosed space is at a first higher temperature and has a decreasingly lower temperature across a width of said insulative layer to an outer surface thereof, wherein said vapors are at said first higher temperature and are also at a first positive pressure within the enclosed space, and wherein the hydrocarbonaceous material is at least one of biomass, sewage and waste sludge; passing said vapors through the inner surface of said insulative layer where such vapors contact matter forming said insulative layer and pass outwardly toward the outer surface of said insulative layer where contact of the vapors with the matter and the decreasing temperature of the gradient across said insulative layer causes the vapors to condense with a resultant lessening of pressure within the insulative layer thereby causing additional vapors to be drawn from the enclosed space into said insulative layer for condensation and wherein said condensate liquid passes downwardly through the matter of the insulative layer for collection.