GeneralDesign of Fermenter

• Definition

• Types of Fermenter

• Typical fermenter

• Parts of fermenter

Type of Fermenter

• The Waldhof-type-fermenter

• The tower fermenter

• Cylindro-conical vessels

• Air lift fermenter

• The cyclone column

Typical fermenter

Dimension Ratio

H/D 1.0

P/D 0.34

Z/D 0.8 to 1.0

Y/D 1.0 to 1.2

B/D 0.08 to 0.1

Parts of fermenter

Stirrer Assembly

Impeller

Baffles

Sparger

Sample point

Valve

Stirrer assembly

Packed-Gland seal

Simple bush

Mechanical Seal

Magnetic drives

Type of impeller

Disc turbine

Vaned disc

Open turbine

Marine propeller

Sparger

Porous sparger

Orifice sparger

Nozzel sparger

Combined sparger agitator

Design for sampling port

Sampling System

Types of valve

• Gate valve• Globe valve• Piston valve• Needle valve• Ball Valve• Butterfly valve• Pinch valve• Diaphragm valve