| 摘要 |
<p>The prevention of pollution by noxious gases and vapours is effected by condensing the condensable gas, dust, tar, soot and ash in a vertical compartment and collecting them at the base of the structure. The remaining gases if noxious are passed out of the compartment and into an absorption unit and if harmless are vented to the atmosphere. Noxious gases remaining after the absorption unit are passed downstream to a further absorption unit, if harmless are also vented to the atmosphere. Noxious gases and vapours from a factory stack (5) are passed off through a side pipe (7) by means of an ejector (8) into a distributor, which includes plates (11) and then into a number of compartments or chambers (C1, C2, C3, ..., etc.) in cylinder (1) with a set period of distribution to each compartment or chamber. The condensable such as tar, as well as the dust, ash, soot, etc., gravitate to the bottom of each compartment (C1, C2, C3, ...) where they are collected in traps, each trap consisting of a sealed window (4) and drawer (3), which is periodically removed and replaced. Gases such as CO2, SOx and NOx as well as CO if present, are passed out of the chamber via exit (12) by tube or pipe to absorption units downstream as described above. An absorption unit for CO2, SOx, and NOx with a rotary perforated Archimedean screw and recycling arrangements which include a micro filter is also disclosed.</p> |
