PLANT AND METHOD FOR ISOMERISATION OF HYDROCARBON FLOW Russian patent published in 2014 - IPC C07C5/22 C07C9/12 C07C9/16 B01J38/48 B01J38/04 

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to isomerisation of hydrocarbon flow rich in C4 and/or at least one of C5 and C6. Proposed plant comprises: first and second dehydrator adapted for intake of fluid including at least one reagent. Note here that said first dehydrator can operate in one reagent-fluid drying first mode. Second dehydrator can operate in second mode for recovery with the help of regenerating agent. Reaction zone is communicated with first dehydrator to receive fluid containing at least one reagent and with second dehydrator to receive regenerating agent. Note also that regenerating agent flows through fluid restrictor for adjustment of regenerating fluid flow rate to reaction zone. First pipeline feeds fluid bearing fluid rich on C4 and/or one of C5 and C6 from first dehydrator into reaction zone. Second pipeline communicates second dehydrator with reaction zone. Note here that said fluid restrictor comprises orifice or control valve connected with at least first or second pipeline. Besides, this invention relates to dehydrator recovery.

EFFECT: invention decreases undesirable effect of the gas dehydrator recovery that helps to keep the devices work properly.

6 cl, 3 dwg