Process and apparatus for the absorption of explosive gases in a mass transfer column
AssigneeBayer Aktiengesellschaft
InventorsGotz-Gerald Borger, Uwe Listner, Gunther Luttgens
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Abstract
The separation process and apparatus is based on conducting the explosive gas or vapour through a mass transfer column which is charged with an absorbent and filled with an electrically conductive packing. The packing (2) of the mass transfer column (1) must be earthed and have such a dense lattice spacing that no electric charge sufficient for ignition can accumulate at any point in the packing. Under these conditions, a non-conductive electrostatically chargeable liquid may be used as absorption liquid.
Claims7
A process for the absorption of explosive gases or vapours which are passed through a mass transfer column charged with an absorbent and filled with an electrically conductive packing, wherein
- a) the packing of the mass transfer column is earthed,
- b) the absorbent used is a nonconductive, electrostatically chargeable liquid and
- c) the packing has such a dense lattice structure that no electric charge sufficient for igniting a mixture of Ex-Class IIC gases can accumulate at any point in the packing.
A column for the absorption of explosive gases or vapours wherein the column contains a regularly arranged electrically conductive packing, the lattice distance of the packing is less than 25 mm so that no electric charge sufficient for igniting a mixture of Ex-Class IIc gases can accumulate at any point in the packing, the electrically conductive packing is earthed, pipes extending to the upper end of the packing or into the packing are provided at the upper end of the column for providing and supplying an absorbent nonconductive and electrically chargeable liquid, and a siphon gas supply pipe also filled with a packing is connected to the lower end of the column. s
Dependencies are inferred from the claim text.