| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas-liquid contact device for a wet type post-processing device for use in absorbing and removing specified gas component contained in exhaust gas from an engine through gas-liquid contact system having an effective structure and mechanism for performing uniform liquid distribution.SOLUTION: A gas-liquid contact device 1 of an engine wet type post-processing device 100 is installed at an exhaust pipe EX of an engine E. A gas introduction part 13 is installed above a porous body 2 provided with many gas-liquid contact passages 22. NOx absorbed gas is injected into each of the corresponding porous body 2 through several injection holes 32 of a liquid injector 3. Liquid droplets L adhered to the porous body 2 flow down on the gas-liquid contact passages 22 corresponding to each of the regions and spread to the adjoining passage wall via through-holes 24 passing through the passage wall. Both exhaust gas and NOx absorbing liquid are efficiently contacted to each other by a distributing mechanism for distributing liquid to the entire porous body 2 to improve NOx absorbing performance. |
