Patent ID: 7083319

Claim:
A large-volume reactor for treating free-flowing material, comprising a housing surrounding an interior space, said housing including a material feed at one end and a material discharge at the other end, a rotor shaft arranged in the interior space for rotation about its axis so as to convey the material in a direction from the material feed to the material discharge, a partition wall mounted in the interior space so as to define two process spaces which are separated from one another, the partition wall including a build-up system having a build-up system passage which leads from an inlet opening which opens out into a first process space, to an outlet opening which opens out into a second process space, and comprising an active conveyor for conveying the material through the build-up system passage and with the build-up system passage being configured to pass the material from the first process space into the second process space while substantially preventing gas from entering into the passage and passing through the passage and thus between the first and second process spaces.