Heat-resistant and regeneratable filter body with flow paths and process for producing the filter body

A heat-resistant and regeneratable filter body for retaining particles from a gas flow flowing through the filter body, comprising:

• a first filter device and a second filter device;
• layers of gas-impermeable material forming flow guide surfaces defining mutually separate flow paths through said first filter device and said second filter device, dividing a gas flow into a plurality of mutually separate partial gas flows and guiding said plurality of partial gas flows in a flow direction;
• and
• wherein said first filter device and said second filter device are disposed in succession in the flow direction in each of said mutually separate flow paths such that each of said partial gas flows first passes through said first filter device and then passes through said second filter device,
• wherein said first filter has a larger filter opening than said second filter device, and wherein at least one of said first filter device and said second filter device is formed of alternate layers of filter material and said layers of gas-impermeable material.