Porous Sparger

The porous sparger of sintered glass, ceramics or metal, has been used primarily on a laboratory scale in

Connection for stirrer motor

Socket for stirrer motor connection

Socket for stirrer motor connection

Sparger Bubble Size

Headplate O-ring

Driven magnet Driving magnet

Stirrer shaft

Stationary parts Rotating parts

Magnets

Headplate/ vessel bottom

Fig. 7.16. Diagram of magnetically coupled top stirrer assembly (Applikon Dependable Instruments, Schiedam, Netherlands).

Headplate O-ring

Driven magnet Driving magnet

Stirrer shaft

Bearing housing body

Spacing washer (5) -

Outside washer

Inner spacer

Retaining nut (6) Bottom end cap (j)' Agitator shaft (ยง)-

Impeller (9

Stationary parts Rotating parts

Magnets

Headplate/ vessel bottom

Fig. 7.16. Diagram of magnetically coupled top stirrer assembly (Applikon Dependable Instruments, Schiedam, Netherlands).

Air outlet -

Seal

/(R) Ball bearing 15) Grubscrew

Air inlet through nipple

Parts Porous Sparger

rj) Ball bearing (3) Spacing washer Seal

Air inlet through nipple rj) Ball bearing (3) Spacing washer Seal

-Air passage

9) Impeller

Fig. 7.17. Diagram of bearing housing with combined agitator-sparger (Inceltech L.H. Reading, England).

non-agitated vessels. The bubble size produced from such spargers is always 10 to 100 times larger than the pore size of the aerator block (Finn, 1954). The throughput of air is low because of the pressure drop across the sparger and there is also the problem of the fine holes becoming blocked by growth of the microbial culture.

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Responses

  • mathilda
    What is porous sparger and example of it?
    6 years ago

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