METHODS AND DEVICE FOR PROCESSING FLOW OF HYDROCARBON-CONTAINING INITIAL RAW MATERIAL Russian patent published in 2015 - IPC C10G25/03 C10G53/08 C07C7/13 

FIELD: chemistry.

SUBSTANCE: invention relates to method of processing flow of hydrocarbon-containing initial raw material, containing C₄, C₅, C₆ and/or C₇ hydrocarbons, water and pollutants, including oxygenates, sulphur compounds or their combinations. Method includes stages of selective removal of water from hydrocarbon-containing initial raw material by bringing in contact with regenerated Linde molecular sieves of A type and selective absorption of water by regenerated Linde molecular sieves of A type with formation of water-saturated molecular sieves, which in fact do not contain pollutants, and flow of dehydrated initial raw material, containing about 1 ppm (wt) or less water, in which content of pollutants is preserved at the same level as in flow of hydrocarbon-containing initial raw material, separation of water-saturated molecular sieves from flow of dehydrated initial raw material, regeneration of water-saturated molecular sieves under regeneration conditions effective for formation of regenerated Linde molecular sieves of A type; removal of pollutants from flow of dehydrated initial raw material by contact of flow of dehydrated initial raw material with non-regenerated sodium faujasite molecular sieves, characterised by molar ratio silicon dioxide/aluminium oxide in range from 2 to 2.5, to obtain flow of dehydrated initial raw material, depleted of pollutants and waste sodium faujasite molecular sieves; and replacement of waste sodium faujasite molecular sieves with fresh non-regenerated sodium faujasite molecular sieves; in which bringing in contact with regenerated Linde molecular sieves of A type is realised inside drier, which does not contain non-regenerated sodium faujasite molecular sieves. Invention also relates to device.

EFFECT: application of claimed invention makes it possible to obtain pure hydrocarbon product without causing untimely irreversible deactivation of absorbent material.

9 cl, 2 dwg