FABRIC FILTER AND METHOD FOR CLEANING A FABRIC FILTER
The fabric filter includes a first chamber with an inlet, a second chamber with an outlet, filter bags housed in the first chamber and having mouths that open in the second chamber and defining at least a bag nest, manifolds with nozzles facing the mouths and housed in the second chamber, a flow direction along which during operation a dirty gas to be treated in the fabric filter enters the bags nest. Angles between the manifolds and the flow gas direction are bigger than 45 degree.
1 . A fabric filter comprising
a first chamber with an inlet,
a second chamber with an outlet,
filter bags housed in the first chamber and having mouths that open in the second chamber, the filter bags defining at least a bag nest,
manifolds with nozzles facing the mouths, the manifolds being housed in the second chamber,
a flow direction along which during operation a dirty gas to be treated in the fabric filter enters the bags nest,
wherein
angles between the manifolds and the flow gas direction are bigger than 45 degree.
2 . The fabric filter of claim 1 , wherein the manifolds extend substantially perpendicular to the flow direction.
3 . The fabric filter of claim 1 , wherein the filter bags are aligned in a matrix configuration.
4 . The fabric filter of claim 1 , wherein
the manifolds are connected to a pressure tank,
at least a valve is connected to each manifold to regulate the flow through that manifold,
a control unit is provided to selectively control the valves.
5 . The fabric filter of claim 1 , wherein the flow direction is defined by the first chamber configuration.
6 . The fabric filter of claim 5 , wherein the flow direction is further defined by the inlet and/or inlet position.
7 . The fabric filter of claim 1 , wherein the flow direction is a direction perpendicular to the inlet and/or parallel to walls of the first chamber.
8 . A method for cleaning a fabric filter comprising simultaneously injecting gas into filter bags aligned over an axis defining angles bigger than 45 degree with respect to a flow direction of a dirty gas, the flow direction being a direction along which during operation the dirty gas to be treated in the fabric filter enters a bag nest of the fabric filter.
9 . The method of claim 8 , wherein the filter bags are aligned over an axis substantially perpendicular to the flow direction.
10 . The method of claim 8 , wherein the fabric filter is a fabric filter according to claim 1 .