SELF-ADAPTING METHOD FOR LOW-TEMPERATURE SEPARATION OF A GAS MIXTURE

摘要

The invention relates to methods for the low-temperature separation of gas mixtures. The present method for separating a gas mixture is carried out during the in-line movement of a gas mixture. Components are isolated from a stream of gas mixture by the direct introduction of a low-temperature coolant directly into the stream of gas mixture at each stage. The coolant is a product of the separation of the gas mixture, obtained at each stage of the cooling of the mixture and the isolation of components. Furthermore, a portion of each separation product obtained is after-cooled using external cold and is then returned directly to all of the stages of cooling of the gas mixture and isolation of the gas components. A stream of gas mixture that has passed through all the stages of cooling and isolation of components is after-cooled using external cold and is returned directly to the preceding stages of the cooling of the mixture and isolation of components, thus creating multiple cycles of the movement and cooling of a stream of gas mixture. Using this invention results in a reduction in capital, operational and energy losses while providing a high degree of separation of gas mixtures of any composition.