| 摘要 |
Amongst equipments, machines and devices for air pollution control, SHEGESTER Type 1 & 2 described by this invention is a scrubber/filter in the same equipment, operating in a gaseous / liquid medium, with at least one of its filter fabrics in its best position being initially, partially or totally immersed in the scrubbing liquid. It is designed to remove both gaseous and particulate pollutants from contaminated air simultaneously or singularly. During its operation, it engages amongst others in one equipment, the following physico-chemical processes in combination or in totality :- i. Heat Exchange ii. Vaporisation iii. Attraction iv. Collission v. Attachment vi. Neutralisation vii. Precipitation viii. Flocculation ix. Filteration x. Sedimentation Vaporization is necessary both for pollutant removal and for self cleaning of the filter fabrics. It also recovers the gaseous and particulate pollutant elements as solid chemicals for recycling. SHEGESTER sometimes introduces foreign pollutant element into the purification process, thus increasing the pollutional load before finally removing all the pollutants from the gas stream. SHEGESTER can be containerized with many of its basic units connected in parallel and in different configuration to handle heavily polluted and voluminuous gas streams. One of its major technical features is the creation of an "ENGINE ROOM DETENTION ZONE" within the equipment where the bulk of the purification process takes place. Of the two alternatives, the Type 1 is preferred because it can handle a wide range of polluted gas streams, by the addition of a "Hopper" mechanism to the dry particulate exit area. Its basic operational principle is that the contaminated gas usually hot, goes through a heat exchanger within, releases part of its heat to the surrounding scrubbing liquid, vapourising it as its passes into the "Engine Room Zone" where it is detained. While there, appreciable vapour from the scrubbing liquid, meets the polluted gas in the "Engine Room", and the physico-chemical processes mentioned commences. Vaporisation decreases liquid level exposing the main filter fabric. Pressure differences across the filter fabric force a flow leading to filteration and later sedimentation unto recovery for re-use, recycling or for final sanitary disposal. |
