Improvements in or relating to the Removal or Extraction of Grease or Oleaginous Gum or Resinous and similar Matter, from Textile Fabric, Wool, Sawdust, Wood Shavings and other Substances or Materials

摘要

27,072. Fulton, C. W., and Hardcastle, E. Nov. 28. Cleaning fabrics &c.-Apparatus for extracting grease, oil, resin, &c. from textiles, wood, &c. consists of a kier or cleaning-vessel B, a vaporizer C, a condenser D for the solvent used, and a drier, and if necessary, heater A for air. The material to be treated is placed in the kier, which may take various forms to suit the various materials and may be steam-jacketed. The solvent is introduced into a collecting-tank D' through the funnel D' and is allowed to flow into the kier through the pipes F, F2. When the level of the solvent is above the top of the siphon G', the kier is practically emptied, the liquid flowing to the vaporizer C. In this, a steam coil H causes the solvent to rise as a vapour through the pipes J, K, F1, the valve J1 being closed to the condenser D which consists of watercooled sets of tubes D'. The condensed liquid then again flows through the pipe F into the kier, and the operation is repeated. When the process is finished, the cock f is closed and the valve g1 is opened, thus permitting the last drops of solvent to flow to the vaporizer. When this operation is completed, as ascertained from the test cock g2, the cocks g, g' are closed and the valve N' is opened, dry air from the drier A passing into the kier, and being heated in passing by the steam coil E. The air thus charged with vapour from the liquid still remaining in the material is driven through the pipe F1 into the condenser, thence passing into the atmosphere through the valve D3. At the same time, the heating-coils H in the vaporizer drive the solvent into the condenser, the valve J1 being opened, leaving the oily residue to be drawn off by a cock.