Purpose of the development: The methods of increasing the efficiency of the extraction and enrichment of a mixture of neon and helium through the introduction of membrane systems in existing cryogenic processes and the development of technological solutions seizures neon helium concentrate on a limited presence of cryogenic maintenance.

Recommended application field: Refrigerated, vacuum and compressor equipment, air conditioning systems, cryogenic equipment.

Advantages over analogues: There are no analogues in Ukraine.

The development stage readiness: Introduced in production

Description of the development:
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Significant differences in the coefficients of permeability of the productive and impurity components of the mixture and the requirement to ensure a high degree of extraction have necessitated the development of a universal calculation method, which provides a high degree of confidence in the modes with significant stakes selection permeate (a production) flow. The coefficients of permeability of pure Ne, He, Kr, and Xe were determined on the test bench manometric method for membranes of polysulfone. To establish and validate computational algorithms operating enrichment plants regimes studies have been performed on a mixture of neon helium-simulators mixtures, the component structure of which corresponds to that at the outlet of separation unit ASU. It was determined that a single membrane module during operation on the existing pressure differential reduces the concentration of impurity nitrogen to about 50% 20..22% at a degree of extraction of helium-neon mixture of C = 0.9. It determined that the permeate recirculation flow legkopronitsaemyh increases the content of components in high-pressure stream which in turn allows for the concentration of impurity nitrogen (N2) = 12% vol. Inclusion membrane module for pre-separation of helium-neon mixture before cryogenic adsorber reduces the concentration of neon in a stream with stripping about 20% to about 5%, thus allowing to increase the time of protective action. Technological schemes enable two-stage membrane systems in the installation liquefying natural gas of low productivity, it is shown that in case the initial concentration of helium in the natural gas (Not)> 0.3 vol% helium is possible to obtain a concentrate (He)> 90% by volume, with overall recovery rate C = 0.9. Industrial prototype of the membrane plant for the enrichment of neon-helium mixture was a two-year trial at the metallurgical plant.

corresponds technical description
Guarantees stable results getting

Possibility of transfer abroad:
Combinated reduction to industrial level
Realization of finished commodity

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua