Methods of removing gaseous elementary mercury from gases in...

Details Methods of removing gaseous elementary mercury from gases in... Methods of removing gaseous elementary mercury from gases in...

B - Operations, Transporting

01

D

23/356.5

B01D 53/64 (2006.01) B01D 53/78 (2006.01)

Patent

CA 2247997

In a first method, in which wash acid is sprayed, as in the prior art, into the top (2') of a washing tower (2) through a system of nozzles (10), the invention calls for wash acid also to be sprayed at a pressure of 1 to 5 bar into the gas line (1) feeding into the washing tower (2), the pressure at the top (2') of the washing tower (2) being kept at 0.01 to 0.5 bar. In a second method, the invention calls for the wash acid to be introduced into the washing tower (2) over at least one plate and for wash acid also to be sprayed at a pressure of 1 to 5 bar into the gas line (1) feeding into the washing tower (2).

Dans le premier procédé, selon lequel l'acide de lavage est introduit de manière connue en soi dans la tête (2') de la tour de lavage (2) par l'intermédiaire d'un système d'ajutages (10), il est prévu d'injecter également de l'acide de lavage à une pression comprise entre 1 et 5 bar dans la conduite de gaz brut (1) reliée à la tour de lavage (2). Une pression de l'ordre de 0,01 à 0,5 bar est ajustée dans la tête (2') de la tour de lavage (2). Dans le second procédé, il est prévu d'introduire de l'acide de lavage (2') dans la tour de lavage (2) par l'intermédiaire d'au moins un fond et d'injecter également de l'acide de lavage à une pression comprise entre 1 et 5 bar dans la conduite de gaz brut (1) qui est reliée à la tour de lavage (2).

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