Two-stage granular moving-bed apparatus

A two-stage granular moving-bed apparatus, comprising:

• a filtering part, comprising:
• an annular gas inlet part, having a plurality of first annular frustoconical downwardly orientated louver walls, for an exhaust gas flow to enter the filtering part;
• an annular gas outlet part, disposed within the annular gas inlet part so as to form internal boundary of the moving bed, and having a plurality of second annular frustoconical upwardly orientated louver walls corresponding to the plurality of first annular frustoconical downwardly orientated louver walls respectively, for a clean gas flow to leave the filter;
• a plurality of annular frustoconical flow-corrective elements, disposed between the annular gas inlet part and the annular gas outlet part, and each corresponding to the first annular frustoconical downwardly orientated louver wall and the second annular frustoconical upwardly orientated louver wall;
• a granular material supplying part, disposed above the filtering part, and divided into a first annular accommodation space and a second annular accommodation space by a cylindrical partition board;
• a first granular material, accommodated within the first annular accommodation space, and flowing through an annular channel between the annular frustoconical flow-corrective element and the first annular frustoconical downwardly orientated louver wall in a state of mass flow;
• and
• a second granular material, accommodated within the second annular accommodation space, and flowing through an annular channel between the annular frustoconical flow-corrective element and the second annular frustoconical upwardly orientated louver wall in a state of mass flow;
• wherein, the first granular material and the second granular material remove contaminants in the exhaust gas flow to form the clean gas flow.

A two-stage granular moving-bed apparatus, comprising:

• a filtering part, comprising:
• an annular gas inlet part, having a plurality of first annular frustoconical upwardly orientated louver walls, for an exhaust gas flow to enter the filtering part;
• an annular gas outlet part, forming the outer boundary of annular moving bed, and having a plurality of second annular frustoconical downwardly orientated louver walls corresponding to the plurality of first annular frustoconical upwardly orientated louver walls, for a clean gas flow to leave the filter;
• a plurality of annular frustoconical flow-corrective elements, disposed between the annular gas inlet part and the annular gas outlet part, and each corresponding to the first annular frustoconical upwardly orientated louver wall and the second annular frustoconical downwardly orientated louver wall;
• a granular material supplying part, disposed above the filtering part, and divided into a first annular accommodation space and a second annular accommodation space by a cylindrical partition board;
• a first granular material, accommodated within the first annular accommodation space, and flowing through an annular channel between the annular frustoconical flow-corrective element and the first annular frustoconical upwardly orientated louver wall in a state of mass flow;
• and
• a second granular material, accommodated within the second annular accommodation space, and flowing through an annular channel between the annular frustoconical flow-corrective element and the second annular frustoconical downwardly orientated louver wall in a state of mass flow;
• wherein, the first granular material and the second granular material remove the contaminants in the exhaust gas flow to form the clean gas flow.