Apparatus for removing dust-containing gases during coking operations

In an apparatus for removing hot gases from the vicinity of a coking oven battery comprising a gas-collecting arrangement mounted at the coking oven battery for movement in a path from one coking oven to another;

• means for conducting the hot gases collected in said gas-collecting arrangement to a location remote from the coking oven battery, including an elongated main duct stationarily mounted at the coking oven battery in substantial parallelism with said path and having an elongated opening extending longitudinally of said main duct and communicating with said gas-collecting arrangement at a portion thereof which is in registry with the latter, and a flexible belt covering the elongated opening, and said gas-collecting arrangement including roller means provided on the inside thereof for lifting the flexible belt to provide open communication between the gas-collecting arrangement and the main duct;
• the improvement comprising means for protecting said belt from deleterious influences of the hot gases entering said main duct through said portion of said opening and conducted longitudinally of said main duct toward said remote location, including a shielding device accommodated in said main duct extending across the interior of said main duct at least in a region juxtaposed with said portion of said opening to separate the hot gases in the collecting main from said belt.