초록 ▼

Filtration system configurations particularly useful for cleaning high temperature raw gas containing fine particulates such as that discharged from coal gasification and fluidized bed combustion processes. Thin filter elements, having elongated clean channels on one side of a gas permeable ceramic

Filtration system configurations particularly useful for cleaning high temperature raw gas containing fine particulates such as that discharged from coal gasification and fluidized bed combustion processes. Thin filter elements, having elongated clean channels on one side of a gas permeable ceramic membrane and shorter dirty channels on the other side, extend radially outward from a central duct. Raw gas flows about and through the filter elements, and clean gas which permeates the membrane enters the duct. The elements are cleaned by a back pulse of clean air, spitting the particulates to the bottom of the containing vessel and through an outlet. A high density filter packing within a containing pressure vessel is achieved by nesting a plurality of the duct and filter element modules, or through other orientations and filter element configurations.

대표청구항 ▼

Apparatus for filtering particulates from a mixture of particulates in a high temperature gas, comprising: a vessel having an internal volume; a duct fixed to and disposed within said vessel, said duct having interior space; a plurality of filter elements affixed to and extending outwardly from said

Apparatus for filtering particulates from a mixture of particulates in a high temperature gas, comprising: a vessel having an internal volume; a duct fixed to and disposed within said vessel, said duct having interior space; a plurality of filter elements affixed to and extending outwardly from said duct, said elements having inlet channels in fluid communication with said vessel internal volume and outlet channels in fluid communications with said duct interior space, said inlet and outlet channels being separated by a ceramic membrane permeable to said high temperature gas and impermeable to said particulates; means for conducting said mixture to said vessel internal volume; means for conducting said high temperature gas out of said duct to a point external to said vessel; and means for conducting said particulates removed from said high temperature gas from said vessel.