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Method and device for energy recovery by manufacturing of asphalt in bulk
| Details |
Inventors: Lund, Ivar;
Assignee: Ameco A/S (Hamar, NO)
Primary Examiner: Favors; Edward G.
Assistant Examiner:
Attorney, Agent or Firm: Roberts & Floyd
Method and device for manufacturing of asphalt bulk masses where a substantial part of the heat energy of the furnace gases from the drying and mixing process is transferred to the bulk mass fractions before those are supplied to the drying and mixing process and where the furnace gases by this process at the same time are cleaned for pollutions. Bulk masses are directed downwards between two parallelly arranged inclined planes (1, 5) where the lower inclined plane (1) comprising horizontally arranged downwards directed ribs (2) directing the furnace gases to the lower side of the bulk masses and where the second inclined plane (5) comprising vertically arranged ribs (4) suctioning the cleaned furnace gases up from the bulk masses after a substantial part of the heat energy being transferred to the bulk masses. At the lower and upper ends of the inclined planes accumulations of the bulk masses (7, 11) are maintained for preventing air from the atmosphere to penetrate into the system. The bulk mass fractions thereafter are transferred to the drying and mixing process, thereby having accumulated a substantial amount of heat energy and the bitumen components being transferred with the furnace gases, as well as other pollutions. |
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DETAILED DESCRIPTION What is claimed is: 1.
Method for manufacture of asphalt in bulk comprising: (a) conducting the asphalt in bulk downwardly along an inclined plane, having an upper wall and a lower wall, by means of gravity; (b) vibrating said inclined plane to move said bulk, and; (c) conducting furnace gasses upwardly within said plane through said bulk.
2.
The method of claim 1 including the step of directing the furnace gasses through the lower wall of the inclined plane in a downward direction against the lower surface of the asphalt bulk.
3.
The method of claim 2 including thes tep of directing the furnace gasses through the upper wall of the inclined plane in a vertical direction away from the upper surface of the asphalt block.
4.
Device for the manufacture of asphalt in bulk comprising in combination; (a) an inclined plane, having an upper and lower wall, thourgh which the asphalt bulk passes; (b) said lower wall comprising a series of horizontal, partly overlapping ribs aligned to move, in a downward direction, gasses entering the plane; (c) said upper wall comprising a series of horizontal ribs aligned to direct, in an upward direction, gasses exiting the plane; (d) said upper and lower walls in parallel alignment one to another; and, (e) means to direct furnace gasses onto said lower wall and to remove said gasses from said upper wall; Whereby heat is transferred from said gasses to said bulk and pollutants are transferred from said gasses to said bulk.
5.
The device of claim 4 including means at the top of the inclined plane to accumulate an amount of asphalt bulk entering the plane sufficient to plug the entrance to the inclined plane and prevent the entrance of environmental air.
6.
The device of claim 5 including means at the base of the inclined plane to accumulate an amount of asphalt bulk leaving the inclined plane to plug the exit of the inclined plane to prevent entrance of environmental air.
Description:
The invention is a method and a device for energy recovery during manufacture of asphalt in bulk
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