Haldor Topsoe A/s

Haldor Topse A/s

Topsoe A/s

Peter Bo Olsen

Niklas Bengt Jakobsson

Per Aggerholm Sørensen

Janus Emil Münster-Swendsen

Anders Theilgaard Madsen

A method for cleaning an off-gas from viscose production, essentially containing HS and CS, comprises passing the gas through a catalytic reactor containing a direct oxidation type catalyst, such as VOon silica, to convert HS in the gas to elemental sulfur, SOor mixtures thereof, either via the oxygen present in the gas or via oxygen added to the gas stream. Elemental sulfur and SOare removed from the effluent gas from the catalytic reactor, and the unconverted CSis recycled to the viscose production process.

Method for cleaning viscose production off-gases and catalysts for use in the method

The present application relates to a process for treating the off gas from a carbon black process, said process comprising the steps of: providing an off gas from a carbon black process, reacting said off gas in a first reaction step forming water and S, and condensing the S at a temperature Tcon where S is in a liquid phase and the water is in gas form thereby achieving a gaseous stream comprising water and a liquid stream comprising S, and wherein the first reaction step is carried out over a monolith catalyst.

Process for treating the off gas from a carbon black plant to recover sulphur

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Hørsholm, Denmark

Peter Bo Olsen