Patent ID: 7473403

Claim:
A device for treatment of a gas flow, comprising at least one body ( 3 ), having a substantially cylindrical shape, said body ( 3 ) having at least one first opening ( 4 ) for entrance of an incoming gas flow to said body ( 3 ) and at least one second opening ( 5 ) for the exit of an outgoing gas flow from said body ( 3 ), said body ( 3 ) comprising a distribution section ( 26 , 26 ') and a gas flow passage section ( 27 , 27 '), and wherein said gas flow passage section ( 27 , 27 ') is provided with a plurality of inlet gas flow passages ( 11 a ) and outlet gas flow passages ( 11 b ), said inlet and outlet gas flow passages ( 11 a , 11 b ) extending substantially parallel to one another so as to permit heat exchange between the gas flows in adjacent passages and to cause a conversion in the composition of the gas, said body ( 3 ) further comprising a reversing zone ( 13 ) in fluid communication with said inlet and outlet gas flow passages ( 11 a , 11 b ) such that the main direction of the gas flow in the inlet gas flow passages ( 11 a) is essentially the opposite of the main direction of the gas flow in the outlet gas flow passages ( 11 b ), the distribution section ( 26 , 26 ') is in communication with the first opening ( 4 ) to lead the ingoing gas flow into the inlet gas flow passages ( 11 a ) and with the second opening ( 5 , 5 ') to lead the outgoing gas flow out from the outlet gas flow passages ( 11 b ), and the distribution section ( 26 , 26 ') comprises one set of channels ( 30 , 40 ) which are open to the inlet gas flow passages ( 11 a ) and another set of channels ( 32 , 41 ) that are open to the outlet gas flow passages ( 11 b ), wherein the distribution section ( 26 , 26 ') comprises an internal cavity ( 20 ) that extends in the longitudinal direction of the body ( 3 ), said internal cavity ( 20 ) is in communication with the first opening ( 4 ) and, along said longitudinal direction, with the set of channels ( 30 , 40 ) which are open to the inlet gas flow passages ( 11 a ), to lead the ingoing gas flow into the inlet gas flow passages ( 11 a ); the distribution section ( 26 ) comprises a wall structure forming: at least one first channel ( 29 ) to which the incoming gas flow is fed; and a plurality of second channels ( 30 ) that extend from said first channel ( 29 ) and which second channels ( 30 ) are open to the gas flow passages ( 11 a , 11 b ) that are intended for an incoming gas flow; and said internal cavity ( 20 ) is closed at an end ( 23 ) opposite to said first opening ( 4 ).