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Glass-lining technology

ConductiGlass®

The mixing of non conductive products in a reactor may lead to the development of electrostatic charges in the heart of the reaction medium. In a glass-lined reactor, electrical insulating properties of the lining prohibit these charges to flow to the ground and enhance their accumulation to very high voltages that become dangerous for the glass-lining. This major problem which was one of the last remaining in glass-lining technology is solved from now on by the use of a new kind of glass-lining called ConductiGlass®.

The principle of the ConductiGlass® solution consists in increasing the conductivity of the glass-lining to a value high enough to allow the discharge to the ground the electrostatic charges created, prohibiting then their accumulation at the glass surface up to dangerous voltages.

This is achieved by adding a small quantity of very thin Platinum fibres, homogeneously dispersed in the whole thickness of the glass-lining, which remains made of DD 3009 standard glass. These fibres are not joined, but the glass thicknesses which are in between them are extremely small and can be compared to a network of micro-condensers discharging in line to let the electrostatic charges flow gently to the ground without any damage for the glass-lining.

Download ConductiGlass® brochure

ConductiGlass® system is produced under license of N.G.K. INSULATORS Ltd.,
the world famous ceramist group which has developed and patented it.

The first ConductiGlass® equipment have been installed in 1998, and more than 100 reactors
are working actually, replacing vessels previously damaged by electrostatic discharges,
in activities as different as production of medicines, pesticides, resins, electronic components,
using solvents like toluene, chloroform, ether, n-heptane, benzene, …

ConductiGlass®

• easy to implement on any kind of glass-lined equipment

• continuous intrinsic property of the whole thickness of the glass-lining during all the life-time of the equipment

• dielectric controls and EmailTest monitoring remain possible

• efficient : many references

grounding with
a Tantulum plug is
not efficient

Note that grounding through a Tantalum plug does not solve
the problem.
As the medium is non conductive, the "lightning conductor" effect of any electrode is only efficient
a couple of centimetres around it.