| 摘要 |
PCT No. PCT/EP85/00111 Sec. 371 Date Jan. 9, 1986 Sec. 102(e) Date Jan. 9, 1986 PCT Filed Mar. 16, 1985 PCT Pub. No. WO85/04343 PCT Pub. Date Oct. 10, 1985.In the process for reducing the noxious substance contents of flue gas, particularly flue gas desulphuration by dry process, the adsorber (1) and/or the regenerator (2) are built like a shaft. Active coke is introduced in the shaft in plane heaps with free intervals between each other: the coke is transported batchwise from top to bottom and is traversed by the flue gas. The heaps are supported by grates (6) of which the bars may come out at least partially from the grate plane so as to disintegrate the heaps and to bring them to the following stage in the form of a trickling flow, so that a constant thickness with respect to the cross-section is maintained. The infeed and evacuation of the flue gas with shaft-like absorber (1), respectively the gas streams in a shaft-like regenerator (2) are carried out in such a way that at least a preponderant number of heaps is traversed from bottom to top. Optionally it is possible to provide in the adsorber a mixture with NH3 gas in order to denitrify the flue gas. In case of reduced active coke need and reduced abrasion there is obtained a good purification effect. |
