cycle t tn Helical gear units Type H and H f B2-SV-12B Bevel-helical gear boxes B2

Flender/Flender Gear Units/Bevel-helical gear boxes B2

lit into the following substeps - Manufacture and characterisation of sulphur-impregnated activated charcoals, varying the starting activated charcoals and the sulphur concentrations, - Construction of trial apparatuses and investigation of the kinetics and reaction mechanism of mercury deposition, - Investigations into the influence of gas impurities on mercury deposition, - Field trials with specific industrial exhaust gas flows . 3. Results The investigations of mercury deposition from gases using sulphur-impregnated activated charcoal allow the following assessment to be made Varying different trial and adsorbent parameters (Table achieves an improvement in the separation capacity, the service life and the loading Parameter Particle size reduction from 5 mm to 2 mm Impregnation with KI Temperature increase 1OoC Flow speed reduced from 0 5 / to 0 1 / Increase in water content from 3 to 3% by volume Temperature increase > 1OoC and gas contents S0, HCI, 0 Changes in separation capacity Increase in separation capacity Increase in separation capacity Increase In separation capacity Decrease in separation capacity Increase in separation capacity Decrease in separation capacity to constant level Increase in separation capacity Table 1: influence of important trial parameters on the separation capacity Furthermore, the nature and temperature of impregnation, the quantity of sulphur applied, and theactivation oftheactivated charcoa1,areall parameterswhich influencethe separation capa- city In this context, an activated charcoal with moderate activity (D4/ and sulphur content of approx 1% displays good separation capacity, while an activated charcoal with high degree of activation (A3/ and sulphur content of approx 3% displaysa very good sepa- ration capacity, which yields very Ion service lives The method of impregnation by sublima- tion, according to the BWV process, szows the highest activity for mercury separ