Waste gas purification involves reducing hot gases to mixture of hot gases via suction hood, and using heat stream to transfer large amount of energy to heat exchanger tubes through which rape seed oil is passed

摘要

Process for purifying waste gas comprises reducing hot gases (3) to a mixture of hot gases (7) via a suction hood (4); and using the heat stream to transfer a large amount of energy to a heat exchanger tubes (6) through which rape seed oil is passed. Preferred Features: The rape seed oil stream is heated to 300 deg C and the energy removed in an open cycle (18) leading to a heat exchanger sink (16).