3865721

Information

• Patent Grant
• 3865721

• References
• Source

• Patent Number

  3,865,721

• Date Filed

  Not available

• Date Issued

  Tuesday, February 11, 1975
  50 years ago

• CPC

  • C02F3/165 - using vertical aeration channels
  • B01F3/04609 - with tubes surrounding the stirrer
  • B01F3/04773 - the stirrers rotating about a vertical axis
  • B01F7/00733 - Submerged mixers, i.e. with a submerged stirrer and drive unit
  • C02F3/16 - the aerator having a vertical axis
  • C02F3/206 - with helical screw impellers
  • C02F3/207 - with axial thrust propellers
  • B01F2003/04666 - the gas being introduced in a guide tube surrounding at least partially the axis of the stirrer
  • B01F2003/04673 - the gas being introduced under the stirrer
  • B01F2003/04687 - the gas being introduced between the stirrer elements
  • B01F2003/04872 - Normal air
  • B01F2003/04879 - Oxygen
  • Y02W10/15 - Aerobic processes

• US Classifications

  • 210 - Liquid purification or separation
  • 261 - Gas and liquid contact apparatus