foerfarande och anordning foer sparning av energi vid tillverkning av asfalt

摘要

PCT No. PCT/NO83/00026 Sec. 371 Date Mar. 5, 1984 Sec. 102(e) Date Mar. 5, 1984 PCT Filed Jul. 4, 1983 PCT Pub. No. WO84/00377 PCT Pub. Date Feb. 2, 1984.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.