Method to remove organic halogenated molecules from gaseous...

Details Method to remove organic halogenated molecules from gaseous... Method to remove organic halogenated molecules from gaseous...

B - Operations, Transporting

01

D

B01D 53/12 (2006.01) B01D 53/70 (2006.01)

Patent

CA 2173288

Method to remove organic halogenated molecules from gaseous currents arriving as a residue of industrial working processes or not, the gaseous current being delivered into a reactor (16) containing a fluid bed consisting of at least one solid adsorbent element after having undergone at least one filtration followed by a cooling, the gaseous current cooperating with the solid particles with exchange by adsorption between the gaseous current and the solid particles, the reactor (16) achieving a time of contact between the gaseous current and the solid particles at least longer than 3 seconds, the gaseous current which enters the reactor (16) having a temperature lower than 80°C., but advantageously between 30° and 70°C., the cooling of the gaseous current upstream of the reactor (16) being followed by a gas/water or gas/air heat exchanger (13). Plant to carry out the above method, in which the reactor (16) includes a first input zone (17) and a second zone of exchange by adsorption between the gaseous current and a solid support in the form of fluid-bed particles kept in suspension, means (18) to introduce and distribute the gaseous current being included and defining the second zone of the reactor (16), the reactor (16) having dimensions such as to achieve a passage time at least longer than 3 seconds, the concentration of solid support within the reactor (16) being between 0.1 and 0.5 kg per each cubic metre of gaseous substance.

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