| 摘要 |
1,114,440. Treating tobacco. IMPERIAL TOBACCO CO. (OF GREAT BRITAIN AND IRELAND) Ltd. 7 Oct., 1966 [6 Nov., 1965], No. 47136/65. Heading A2C. [Also in Division F4] A method of maintaining a cohesive material in a fluidized state comprises urging gas through the material and simultaneously mechnically agitating the material. The method is particularly applicable to the removal of nicotine from ground tobacco. The tobacco, treated with alkali, is fed to a composite cylinder 10, comprising chambers 11, 12 and 13, through an inlet 16. Overflow passages 17 and 18 ensure distribution of the tobacco to chambers 12 and 13. The treated tobacco emerges through outlet 20. Steam is applied through inlet 14 and emerges, charged with nicotine, through outlet 15. The cylinder 10 is vibrated in a horizontal plane through arms 21, 22, 23 and 24 connected to suitable eccentric drives. |
