Patent ID: 6622780
Filing Date: 2003-09-23
Classification: F23G

Abstract:
A method for thermally regenerating a heat exchanger material of a regenerative post-combustion device, which in a housing comprises from top to bottom:a) a combustion chamber; b) a section, which is divided into several segments filled with heat exchanger material; c) a rotary distributor having a direction of rotation, which according to its rotary position produces: ca) a connection between an inlet for a waste gas to be purified and at least one corresponding first segment of the heat exchanger material; cb) a connection between at least one corresponding second segment of the heat exchanger material and an outlet for the purified gas; cc) a connection between at least one corresponding third segment of the heat exchanger material, which segment is ahead of the corresponding second segment in the direction of rotation of the rotary distributor, and one of an inlet and an outlet for flushing gas, the method comprising the steps of heating air in the combustion chamber, removing the heated air from the combustion chamber, adjusting the removed air to a desired regeneration air temperature using fresh air, conducting the temperature-adjusted removed air successively through all segments of the heat exchanger material, bringing the heat exchanger material to a temperature at which contaminants adsorbed by the heat exchanger material are released, removing the air used for thermal regeneration from the combustion chamber, returning the air to the inlet for the waste gas to be purified, while the outlet for purified gas is closed, and circulating the air with the rotary distributor rotating until all the heat exchanger material has been sufficiently heated and all contaminants have been released from the heat exchanger material.