Water gas shift reactor and heat exchanger

F - Mech Eng,Light,Heat,Weapons – 28 – F

Patent

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Details

F28F 1/10 (2006.01) B01J 8/02 (2006.01) B01J 19/24 (2006.01) C01B 3/16 (2006.01) F28D 15/00 (2006.01) F28D 21/00 (2006.01) F28F 7/00 (2006.01) H01M 8/06 (2006.01)

Patent

CA 2337201

A water gas shift reactor (10) in which the shift reactor is maintained at near constant temperatures and/or is continuously humidified in manners that attain low exit temperatures at elevated humidity in order to achieve minimum carbon monoxide concentration in the exit gas through exit tube (60). Heat exchanger (10) comprises a housing (12) with a chamber (14). The chamber (14) holds upper and lower circular tubes (16) and (18), each with passages (20) and (22) respectively. The tubes (16) and (18) are connected by vertical tubes (24) and passages (20) and (22) are connected with vertical passage (26). Side arm tube (36) with passage (38) permits water vapor within passage (30) and (34) while pump (40) facilitates circulation.

L'invention concerne un convertisseur à vapeur d'eau, qui est maintenu à des températures pratiquement constantes et/ou est humidifié en permanence de façon à atteindre des températures de sortie basses à une humidité relative élevée. Ces conditions permettent d'obtenir des concentrations d'oxyde de carbone minimales dans le gaz de sortie. A cet effet, le convertisseur peut fonctionner soit en isothermie avec une pression de vapeur d'eau constante, soit dans une certaine plage de régulation des températures et des pressions de vapeur d'eau. Plusieurs configurations de matériel sont décrites, ainsi qu'un procédé général permettant de minimiser la quantité d'oxyde de carbone contenue dans le gaz produit. Ce convertisseur peut être associé aux ensembles chaudière sous-oxydée (UOB?TM¿), reformeur à oxydation partielle, convertisseur et pile à combustible.

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