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removal of P4, PH3 and H2S from Yellow Phosphoric Tail Gas by a Catalytic Oxidation Process

Engineering Sciences 2004年第4期 20-27页

作者： Hans-Jrg Bart D-67653 Kaiserslautern Germany lehrstuhl für thermische verfahrenstechnik University Kaiserslautern

Yellow phosphorus tail gas is a resource used to produce bulk chemicals, such as formates, oxalates, and methanol after its pretreatment and purification. In this study, catalytic oxidation of phosphorus and hydrogen sulfide in yellow phosphorus tail gas was investigated on an ordinary activated carbon (OAC) and a home made catalyst KU2. The adsorption characteristics of phosphorus and hydrogen sulfide on the catalysts were studied in a fixed-bed system at different temperatures between 20℃ and 140℃ at atmospheric pressure. Both KU2 and OAC are proved to be effective catalysts in the catalytic oxidation process (COP) for H 2S and PH 3 removal. Purification efficiency increased with the increase of temperature and oxygen concentration in yellow phosphorus tail gases. Under optimized operation conditions, the product gases with a content of hydrogen sulfiderusre obtained by using the COP process. Deactivated catalysts could be restored to the original activated state, even after several regenerations. A mathematical model was developed to simulate the experimental results and the mass transport coefficient from the experiment was evaluated. Good agreement between the experimental breakthrough curves and the model predictions was observed.

关键词： H2S P4 PH3 catalytic oxidation fixed bed adsorber activated charcoal

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NUMErICAL SIMULATION Of THE EffECT Of MALDISTrIBUTION IN A fIXED BED ADSOrBEr

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Chinese Journal of Chemical Engineering 1997年第4期5卷 22-33页

作者：宁平谷俊杰 Hans-Jrg Bart Department of Chemical Engineering Kunming University of Science and Technology lehrstuhl fur thermische verfahrenstechnik Universitat Kaiserslautern

The paper deals with the modeling of the effect of maldistribution in pollutant abatementtrichloroethylene（TCE）concerning low concentration(10-5-10-8kg·m-3)adsorption in an *** a concentration range is rather typical in many an environmental *** andbreakthrough curves for TCE adsorption are obtained both for a commercial activated carbonSorbonorit 4 and a laboratory adsorber of dB/dP=*** two-dimensional nonequilibrium isothermalmodels are developed to describe the mass transfer in the fixed bed taking into account the effect *** is found the simulation results with maldistribution are in very good agreementwith the experimental *** concentration TCE adsorption in a fixed bed of activated carbonis found to be strongly influenced by *** non-uniform distributions of concentrationand loading of the pollutant in the adsorber are predicted by the *** and its ef-fect on the initial breakthrough of TCE in

关键词： adsorption models fixed bed adsorber maldistribution trichloroethylene.

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