Process and apparatus for cleaning exhaust fumes

Claim 1

An apparatus for cleaning exhaust fumes from a combustion device which comprises a first conduit means defining a first flow path communicating with the combustion device to receive exhaust fumes outflowing therefrom; a second conduit means defining a second flow path communicating with said combustion device to deliver an intake gas flow thereto; a filter disposed for movement relative to said first and second conduit means and positioned to intercept said first and second flow paths, the area of the filter intercepted by said first flow path being operable to clean exhaust fumes flowing in a given direction through the filter and trap solid particle components thereof; the area of the filter intercepted by said second flow path being cleaned by the intake gas flowing in the opposite direction through the filter and removing trapped solid particles therefrom; such removed particles being carried by the intake gas into the combustion device; means for cyclically moving said filter to successively present for interception with said second flow path for cleaning those areas of the filter previously intercepted by said first flow path and to sucessively present cleaned filter areas for interception with said first flow path said filter being in the form of an endless belt ; and rotatable means supporting said belt and moving same through said first and second flow paths.

Claim 2

An apparatus for cleaning exhaust fumes from a combustion device which comprises a first conduit means defining a first flow path communicating with the combustion device to receive exhaust fumes outflowing therefrom; a second conduit means defining a second flow path communicating with said combustion device to deliver an intake gas flow thereto; a filter disposed for movement relative to said first and second conduit means and positioned to intercept said first and second flow paths, the area of the filter intercepted by said first flow path being operable to clean exhaust fumes flowing in a given direction through the filter and trap solid particle components thereof; the area of the filter intercepted by said second flow path being cleaned by the intake gas flowing in the opposite direction through the filter and removing trapped solid particles therefrom; such removed particles being carried by the intake gas into the combustion device; means for cyclically moving said filter to successively present for interception with said second flow path for cleaning those areas of the filter previously intercepted by said first flow path and to sucessively present cleaned filter areas for interception with said first flow path said filter being in the form of an endless belt ; and rotatable means supporting said belt and moving same through said first and second flow paths.

Claim 3

An apparatus for cleaning exhaust fumes from a combustion device which comprises a first conduit means defining a first flow path communIcating with the combustion device to receive exhaust fumes outflowing therefrom; a second conduit means defining a second flow path communicating with said combustion device to deliver an intake gas flow thereto; a filter disposed for movement relative to said first and second conduit means and positioned to intercept said first and second flow paths, the area of the filter intercepted by said first flow path being operable to clean exhaust fumes flowing in a given direction through the filter and trap solid particle components thereof; the area of the filter intercepted by said second flow path being cleaned by the intake gas flowing in the opposite direction through the filter and removing trapped solid particles therefrom, such removed particles being carried by the intake gas into the combustion device; means for cyclically moving said filter to successively present for interception with said second flow path for cleaning those areas of the filter previously intercepted by said first flow path and to successively present cleaned filter areas for interception with said first flow path, said filter being porous and the porosity size of the filter media decreasing in the exhaust fumes flow direction.

Claim 4

An apparatus for cleaning exhaust fumes from a combustion device which comprises a first conduit means defining a first flow path communIcating with the combustion device to receive exhaust fumes outflowing therefrom; a second conduit means defining a second flow path communicating with said combustion device to deliver an intake gas flow thereto; a filter disposed for movement relative to said first and second conduit means and positioned to intercept said first and second flow paths, the area of the filter intercepted by said first flow path being operable to clean exhaust fumes flowing in a given direction through the filter and trap solid particle components thereof; the area of the filter intercepted by said second flow path being cleaned by the intake gas flowing in the opposite direction through the filter and removing trapped solid particles therefrom, such removed particles being carried by the intake gas into the combustion device; means for cyclically moving said filter to successively present for interception with said second flow path for cleaning those areas of the filter previously intercepted by said first flow path and to successively present cleaned filter areas for interception with said first flow path, said filter being porous and the porosity size of the filter media decreasing in the exhaust fumes flow direction.