Dust filter apparatus
AssigneeCoal Industry (Patents) Limited
InventorGranville C. James
Life of this patent
Estimating the term…
Abstract
Dust filter equipment includes a fibrous mat filter (37) having a low fibre density and a low loft so that when water is fed onto the filter it saturates the filter throughout its thickness and flows freely down the filter to form an effectively continuous body of water having a thickness virtually equal to the thickness of the mat filter.
Claims16
Dust filter apparatus comprising a hollow chamber, the chamber defining a gaseous flow duct having an inlet and outlet, a filter unit including a fibrous mat filter means arranged across the duct, and nozzle means in the duct for spraying liquid into the inlet of the gaseous flow duct on an upstream side of the mat filter means, fibers of the mat filter means being nondensely packed, the mat filter means having a low fibre density such that the mat filter tends not to retain the liquid by capillary action and permits flow of liquid throughout a thickness of the filter means in the directions parallel to, and transverse to, the direction of gaseous flow and having a low thickness such that the liquid from the nozzle means saturates the whole of the mat filter means, the arrangement being such that, in use, an effectively continuous body of flowing liquid is formed across the gaseous flow passage, the body of flowing liquid having a thickness virtually equal to the thickness of the mat filter means.
Dust filter apparatus comprising a hollow chamber defining a gaseous flow duct having an inlet and outlet, a filter unit including a fibrous mat filter means arranged across the duct, and nozzle means in the duct for spraying liquid into the inlet of the gaseous flow duct on an upstream side of the mat filter means, the mat filter means having a low fibre density such that the mat filter means tends not to retain the liquid by capillary action and permits flow of liquid throughout a thickness of the filter in the directions parallel to, and transverse to, the direction of gaseous flow and having a thickness such that the liquid from the nozzle means saturates the whole of the mat filter means, the arrangement being such that, in use, an effectively continuous body of flowing liquid is formed across the gaseous flow passage, the body of flowing liquid having a thickness virtually equal to the thickness of the mat filter means, fan means for inducing the gaseous flow through the filter unit, and a sealed settling tank provided below the filter unit.
Dust filter apparatus comprising a hollow chamber defining a gaseous flow duct having an inlet and outlet, a filter unit including a fibrous mat filter means arranged across the duct, and nozzle means in the duct for spraying liquid into the inlet of the gaseous flow duct on an upstream side of the mat filter means, the mat filter means having a fibre density such that the mat filter means tends not to retain the liquid by capillary action and permits flow of liquid throughout a thickness of the filter in the directions parallel to, and transverse to, the direction of gaseous flow and having a thickness such that the liquid from the nozzle means saturates the whole of the mat filter means, the arrangement being such that, in use, an effectively continuous body of flowing liquid is formed across the gaseous flow passage, the body of flowing liquid having a thickness virtually equal to the thickness of the mat filter means, fan means for inducing flow through the filter unit, a sealed settling tank provided below the filter unit, and means for maintaining the level of liquid in the settling tank to a preselected level.
Dust filter apparatus comprising a hollow chamber defining a gaseous flow duct having an inlet and outlet, a filter unit including a fibrous mat filter means arranged across the duct, and nozzle means in the duct for spraying liquid into the inlet of the gaseous flow duct on an upstream side of the mat filter means, the mat filter means having a fiber density such that the mat filter means tends not to retain the liquid by capillary action and permits flow of liquid throughout a thickness of the filter in the directions parallel to, and transverse to, the direction of gaseous flow and having a thickness such that the liquid from the nozzle means saturates the whole of the mat filter means, the arrangement being such that, in use, an effectively continuous body of flowing liquid is formed across the gaseous flow passage, the body of flowing liquid having a thickness virtually equal to the thickness of the mat filter means, and means on the downstream side of the mat filter for removing liquid from the filtered air flow.
Dependencies are inferred from the claim text.