| 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 hydrocarbon vapors extracted therefrom, wherein the hydrocarbonaceous material is selected from the group consisting of oil shale, tar sands, coal, bitumen, lignite, peat, and combinations thereof, said enclosed space being surrounded by an insulative permeable layer having a temperature gradient therein, wherein the insulative permeable layer is distinct from the hydrocarbonaceous material in at least one of average particle size and composition, 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; 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. |
