Patent ID: 8187559

Claim:
Plate ( 10 , 10 a , 10 b ) intended to be integrated in a stack of plates in a heat exchanger system, said plate delimiting on one of its two faces a fluid circulation zone ( 20 ) which is at least partially coated with a catalyst ( 18 a , 18 b ) allowing a catalytic chemical reaction within this zone, said fluid circulation zone ( 20 ) comprising a network of channels ( 30 ), characterised in that said network of channels ( 30 ) comprises a plurality of basic channels ( 38 ) distributed in rows ( 40 ), each row comprising a plurality of side walls ( 42 ) arranged opposite one another and spaced apart from one another in a first direction ( 44 ), so that any two directly consecutive side walls delimit one of the basic channels ( 38 ) of said row, said rows ( 40 ) of basic channels ( 38 ) being arranged opposite one another and spaced apart from one another in a second direction ( 46 ) which is perpendicular to the first ( 44 ), and characterised in that, in said fluid circulation zone ( 20 ), only the basic channels ( 38 ) are at least partially coated with said catalyst ( 18 a , 18 b ), said fluid circulation zone ( 20 ) also comprises a fluid inlet ( 24 ) and a fluid outlet ( 36 ), a main fluid distributor ( 26 ) opening into said inlet and a main fluid collector ( 34 ) opening into said outlet, and additionally comprises a plurality of secondary fluid distributors ( 28 ), each opening into said main fluid distributor ( 26 ) and located between two directly consecutive rows ( 40 ) of basic channels, and also a plurality of secondary fluid collectors ( 32 ), each opening into said main fluid collector ( 34 ) and also located between two directly consecutive rows ( 40 ) of basic channels; and between two directly consecutive rows ( 40 ) of basic channels, the secondary fluid distributor ( 28 ) intended to supply fluid to the basic channels ( 38 ) of one of the two rows, and the secondary fluid collector ( 32 ) intended to collect the fluid escaping from the basic channels ( 38 ) of the other of the two rows ( 40 ), are separated by a wall element ( 50 ) which is inclined in said first and second directions ( 44 , 46 ).