Filter system employing microwave regeneration

A filtration system operable at elevated temperatures and regenerateable employing microwave energy comprising

• a plurality of chambers,
• each chamber including a filter therein and having a plurality of walls defining a passageway into and out of said chamber for a fluid medium,
• a microwave-permeable window defined in one wall of each of said chambers, said window being impermeable to the flow of said fluid medium therethrough,
• a source of microwave energy,
• means directing microwave energy from said source thereof through said window of each of said chambers and into said chamber for a selected period of time and substantially simultaneously closing off any fluid flow through said chamber during said selected period of time, whereby material captured on a filter within said chamber is converted to a gaseous state.