GAS LIFT APPARATUS Russian patent published in 1997 - IPC

FIELD: treatment of three-phase "liquid-gas-solids" systems during processing of precipitated biogenic wastes. SUBSTANCE: proposed apparatus comprises vertical cylindrical shell having lid and bottom with conically shaped lower portion. Apparatus further comprises at least one flow circulation circuit, and inlet and outlet branch pipes for supply of feed mass and for withdrawal of liquid and solid products, as well as for admission of oxygen-containing gas and for ejection of off-gases. Flow circulation circuit is made in form of air lift pipe 9 arranged outside of shell. Lower end of pipe 9 is connected with upper portion of bottom 3, while its upper end is tangentially received into upper portion of cylindrical shell. Branch pipe 10 for supply of oxygen-containing gas communicated with lower portion of air lift pipe 9. It is advisable that branch pipe 4 for supply of feed mass be arranged in top portion of cylindrical shell 1 above entrance point of air lift pipe 9, while it is preferable that liquid product discharge pipe be disposed in lower portion of cylindrical shell. To facilitate discharge of solid product, plurality of water supply pipes 14 can be arranged in conical portion 7 of bottom 3. EFFECT: apparatus can be effectively used for processing wastes and sewage, thereby providing effective environmental control. 2 cl, 2 dwg