H2-KH-23-A flender motor Helical gear unit H2

Flender/Flender Gear Units/Helical gear unit H2

ardly degradable substances can be realised due to the unusually hi capacity of the high-performance combined fluidised bed reactor on reasonable industriayscale. 1 Duration: 0.0 8 - 3 1 8 0VQ3 Sub'ect: Exhaust air purification by mercury deposition on sulphr-impregnated activated charcoal, reaction mechanism/kinetics/pilot trials Research centre: Bergbau-Forschung GmbH Franz-Fischer-Strasse 6,4 Essen Government sponsorship: DM 6,1 0 Sponsorship ratio: 6 / 1. Purpose of the project , Mercury or mercury-contaminated raw materials are used in numerous industrial processes and, in many cases,find their way into the exhaust air The mercuryemissions originate prima- rily from the following sources - Combustion of fossil fuels and refuse incineration - Alkali chloride electrolysis - Battery and catalyst factories - Pesticide manufacture and use In principle, impregnated activated charcoal with inner surfaces coated with 1 to 2% by weight sulphur is suitable forthe removal of mercury The diffused mercuryvapour in the pore system of the activated charcoal robably reacts with the finely dispersed sulphur on the inner surface of the activated charcoarto form mercury sulphide The aim of the project is to gain more in-depth knowledge concerning the mechanism and kinetics of this reaction by means of model investigations of mercury chemisorption on SUI- phur-impregnated activated charcoal The question is to be examined whether correlation exists between thequantitiesofsul hurdepositedin thevariousporeradiusrangesoftheacti- vated charcoal and the quantity orchemisorbed mercury Because other gas impurities are contained in specific exhaust gases in addition to mercury, the interactions of these com- pounds with the activated charcoal carrier and the deposited sulphur must be investigated Field trials with specific industrial exhaust gases serve to check the results achieved in the model trials 2. Working steps Implementation of the project is sp