Plasma exhaust purification
AssigneeBrüCkner Maschinenbau GmbH & Co. KG
InventorsJosef EISCH, Nicole AMBROSIUS-VOSS, Rainer SCHWUCHOW, Stefan SEIBEL
Life of this patent
Estimating the term…
Abstract
The invention relates to an improved method and to an improved device for degassing polymer melts and for neutralizing the thus produced pollutants, characterised by the following characteristics: said pollutants are guided to a plasma source after removal from the degassing area and prior to adding to a filter step or a separator, said plasma source being built and/or formed such that in said plasma source, the pollutants are transformed, entirely or partially, in a plasma aggregate state.
Claims27
Method for degassing polymer melts and for neutralising the pollutants formed thereby, comprising the following method steps:
- a low pressure or vacuum is generated by means of a vacuum system,
- the low pressure or vacuum is fed to a degassing zone in which the polymer melt is situated,
- the pollutants in the form of waste gases or waste gases and liquid and/or solid components removed or withdrawn from the degassing zone by the vacuum system are separated in a downstream filtering stage and/or a separator,
- wherein the following further steps:
- after being removed from the degassing zone and before being fed to a filter stage or a separator, the pollutants are fed to a plasma source which is so constructed and/or designed that the pollutants are converted wholly or in part into a plasma state of aggregation in the plasma source.
Device for degassing polymer melts and for neutralising the waste gases formed thereby, having the following features:
- a vacuum system is provided, via which a low pressure or a vacuum can be generated,
- a line and/or pipe system is provided, via which the low pressure and/or vacuum can be fed to a degassing zone for degassing a polymer melt situated in the degassing zone,
- at least one filter and/or separator stage is provided, via which the pollutants which can be removed or withdrawn by means of the vacuum system from the degassing zone in the form of waste gases or gaseous and/or liquid and/or solid components can be discharged;
- wherein the following further features:
- downstream of the degassing zone there is arranged at least one plasma source in which the pollutants which can be removed from the degassing zone can be converted into a plasma state of aggregation.
Device according to claim, 12, wherein a starter device is connected upstream of a respective plasma source.
Dependencies are inferred from the claim text.