METHODS AND APPARATUS FOR ISOMERISATION OF PARAFFINS Russian patent published in 2016 - IPC C07C7/09 C07C9/16 C07C5/27 C07C5/13 

FIELD: chemistry.

SUBSTANCE: invention relates to versions of a method for isomerisation of paraffins. One of versions includes following steps: dividing waste product of isomerisation into a product stream, which contains branched and straight paraffins, and vapour stabiliser stream, which contains HCl, H₂ and C₆-hydrocarbons; dividing vapour stabiliser stream on vapour of dry gas, containing HCl, H₂ and C₅-hydrocarbons, and fluid stream, which contains C₂- and C₃+ hydrocarbons; dividing vapour of dry gas into a phase enriched with C₅- hydrocarbons, and a stream enriched with HCl and H₂, in a cooling unit; activating isomerisation catalyst using at least part of stream rich in HCl and H₂, to obtain isomerisation catalyst, promoted with chloride, wherein at least part of stream enriched with HCl and H₂, is fed directly for recycling from dividing dry gas vapour for activation of isomerisation catalyst; and bringing into contact stream of paraffin of fed initial stock with catalyst , promoted with chloride in presence of hydrogen for isomerisation of paraffins.

EFFECT: use of present invention enables to reduce consumption of chloride promoter and/or caustic alkali.

19 cl, 1 dwg