METHODS FOR EXTRACTING LPG FROM REFORMING ZONE PRODUCT Russian patent published in 2023 - IPC C10G61/06 C10G31/06 C07C7/11 C07C7/04 

FIELD: hydrocarbon reforming.

SUBSTANCE: invention is related to a process for recovering C₃/C₄ hydrocarbons from a reforming stream (28). The method includes: separation in the first separation zone (14) of the product (28) of the reforming zone containing H₂, C₄^- hydrocarbons and C₅⁺ hydrocarbons, including aromatic compounds, with formation of a dry gas-phase stream (34) containing C₆^- hydrocarbons and H₂ and liquid phase hydrocarbon stream (36) containing C₅⁺ including aromatic compounds; separating in the second separation zone (16) of the dry gas phase stream (34) with formation of the first H₂ rich stream (74) and a gas stream (76) that contains H₂ and C₄^- hydrocarbons; cooling of the gas stream (76) to a temperature of 15.6 to 71.1°C (60 to 160°F) to form a cooled gas stream (84); cooling liquid-phase hydrocarbon stream (36) to a temperature of 15.6 to 71.1°C (60 to 160°F) to form a cooled liquid phase hydrocarbon stream (88); and absorbing C₃/C₄ hydrocarbons from the cooled gas stream (84) by the cooled liquid phase hydrocarbon stream (88) in the absorption zone (18) to form a fuel gas stream (94) and a C₃/C₄ rich liquid phase hydrocarbon stream (92).

EFFECT: use of the present invention provides devices and methods for reforming hydrocarbons with improved recovery of products from the products of the reforming reactor.

10 cl, 2 dwg