METHOD AND SYSTEM FOR EXPANDING TOBACCO

摘要

Steam or high-temperature gas containing steam is flown through a gas-flow drying pipe. Tobacco is fed from a feed port into the high-temperature gas flowing through the gas-flow drying pipe, and heated and expanded while it is flown together with the gas. Steam or water is injected into the high-temperature gas flow from injection nozzles at the positions downstream from the feed port to change the gas temperature. Thereby, the heat quantity given to the tobacco from the hightemperature gas is controlled to prevent the tobacco quality from degrading.