Patent ID: 7467585

Claim:
An apparatus for converting feed material by pressurization, the apparatus comprising: a cylindrical compression chamber arranged about an axis, the cylindrical compression chamber being confined on a peripheral side thereof by an annular element having at least one passage opening; and a pressure element rotating in the compression chamber around the axis in a direction of rotation, wherein the feed material is axially fed into the compression chamber and is conveyed radially to the annular element by the pressure element, wherein the pressure element includes at least one pressure arm that extends to and interacts with a ring element, a front face of the pressure element, in a rotational direction of the pressure arm, is curved such that a narrowing compression zone is formed between the pressure arm and the ring element, an end of the front face being formed by a pressure piece, and wherein a segment of the pressure arm, which is located in front of the pressure piece in the direction of rotation, and which forms the compression zone, is at least in part formed by a shape component that is detachably connected to the pressure arm, a spine of the shape component determining a contour of the compression zone.