FRIBORATOR C self-priming gassing agitators

Begasungsrührer für Chemiereaktoren des Typs FRIBORATOR 12000 C
Begasungsrührer für Chemiereaktoren des Typs FRIBORATOR 12000 C

Product description

The units for installation in gas/liquid reactors are characterized by their simple design, extreme durability and particularly high local energy dissipation densities. This produces ultra-fine bubble gas/liquid dispersions, which enable a high mass transfer from the gas to the liquid phase.

The units of the FRIBORATOR type are supplied in sizes from 1 kW to 240 kW, although larger systems are also possible if required.

The following features characterize the gasifiers of the FRIBORATOR C series:

  • Self-priming operation without pre-pressure blower
  • High turbine speeds
  • Direct drive of the hydraulic rotor/stator unit
  • Design in standard stainless steels (1.4571 and 1.4404) or in special steels
  • Single- or double-acting mechanical seal
  • Pre-pressure operation in pressure reactors and headspace suction possible
  • Different drive concepts

Drive types

Self-priming gas supply agitators of the FRIBORATOR series C are available for gas volume flows up to 4,000 m³/h and power ratings up to 240 kW. Depending on the size, they operate in speed ranges from 800 – 1500 rpm and can be supplied with different drive types according to requirements and performance class:

  • with standard asynchronous motor
  • with pole-changing (PU) asynchronous motors
  • with frequency controlled motors
  • with pressure-enclosed ATEX motors
  • with water-cooled multi-motor drives

Different design standards of FRINGS gassing agitators:

  • FRIBORATOR P: for sterile processes in biotechnology
  • FRIBORATOR B: for hygienic processes in brewery and beverage environments
  • FRIBORATOR G: with equipment and documentation according to GMP pharmaceutical standard
  • FRIBORATOR C: without sterile or hygienic design according to chemical standard
  • FRIBORATOR TRG: for large reactors (biocommodities, baker’s yeast, …)

What are FRINGS aeration stirrers and how do they work?

FRINGS gassing stirrers and submersible aerators are high-performance systems for the optimum introduction of gases into chemical and bioreactors and other gas/liquid apparatus. In particular, these gassing systems are designed for chemical gas/liquid reactions in the low-viscosity range and for oxygen supply to bacterial and yeast cultures.

The transport of gas into the liquid is often the rate-determining step for mass transfer in gas/liquid reactions. With FRINGS high-performance aerators, it is possible to increase the speed of this mass transfer compared to other aeration systems. In the case of chemical reactions, this means an increase in the reaction rate, and in the case of microbial mass transfer, an increased growth and product formation rate.

Our gassing stirrers and submersible aerators impress with their ability to suck in gas automatically (which means that in many applications a gas compressor/blower can be dispensed with) and enable plant design with minimum installation effort.

In FRINGS gassing systems, the star-shaped rotor located at the bottom of the tank to be gassed draws in liquid axially and accelerates it radially and tangentially at the working surfaces. At the rear of the working surfaces, which are connected to the gas line, a negative pressure area is created during rotation. Due to the pressure difference compared to the gas line, gas flows out into the working area of the rotor and is intensively mixed with the liquid. The liquid/gas mixture is conveyed into the channels of the stator. At the channel outlets, whose length and geometry depend on the diameter of the tank and the rheology of the medium, the mixture flows out turbulently.

CONTACT Biotech-Team


Tel.: +49 (0)22 26 89 29 – 400



Boschstraße 32 53359 Rheinbach
Tel.: +49 (0)22 26 89 29 – 400 Fax: +49 (0)22 26 89 29 – 401