초록 ▼

The present invention involves a porous rigid filter including a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulates fro

The present invention involves a porous rigid filter including a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulates from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulates. The present filter has the advantage of requiring fewer filter elements due to the high surface area-to-volume ratio provided by the filter, requires a reduced pressure vessel size, and exhibits enhanced mechanical design properties, improved cleaning properties, configuration options, modularity and ease of fabrication.

대표청구항 ▼

[ What is claimed is:] [1.] A multi-walled rigid porous ceramic filter device having a gas inlet end and a gas outlet end, suitable for use for particulate filtration, said device comprising:an inner filtration element having an inner porous ceramic tubular wall and an outer porous ceramic tubular w

[ What is claimed is:] [1.] A multi-walled rigid porous ceramic filter device having a gas inlet end and a gas outlet end, suitable for use for particulate filtration, said device comprising:an inner filtration element having an inner porous ceramic tubular wall and an outer porous ceramic tubular wall spaced apart from said inner wall, wherein said space defined between said inner and outer walls is an internal flow passage having a closed end at the gas outlet end of said device;an outer filtration element having an inner porous ceramic tubular wall and an outer porous ceramic tubular wall spaced apart from said inner wall of said outer filtration element, wherein said space defined between said inner and outer walls of said outer filtration element is an internal flow passage having a closed end at the gas outlet end of said device, said outer filtration element concentrically surrounding said inner filtration element;an external flow passage defined by a space between said outer wall of said inner filtration element and said inner wall of said outer filtration element, said external flow passage having a closed end at the gas inlet end of said device; andmeans for generating desired pressure differentials between said internal and said external flow passages, wherein during filtration the pressure differential is sufficient to cause a gas to flow from said internal flow passage to said external flow passage to filter any particulate matter from the gas by passage through said porous ceramic tubular walls, and during regeneration the pressure differential is sufficient to cause a purge gas substantially free of particulate matter to flow from said external flow passage to said internal flow passage to evacuate any filtered particulate matter from said device.