METHOD FOR PURIFYING A FEEDSTOCK RESULTING FROM A METHOD FOR DEPOLYMERISING STYRENE COMPOUNDS

• Main Authors: KIENER, Pierre, SÉRÉ-PEYRIGAIN, Pierre, PACHECO, Nuno
• Format: Patent
• Language: English; French; German
• Published: 24.07.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; CRACKING HYDROCARBON OILS; FUELS; GENERAL PROCESSES OF COMPOUNDING; LUBRICANTS; METALLURGY; MINERAL WAXES; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; SEPARATION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

The invention relates to a method for purifying a feedstock resulting from a method for depolymerising styrene compounds, referred to as purification method feedstock, comprising at least one step of separation which produces an extract rich in light compounds, a raffinate rich in heavy compounds, and a styrene-rich stream, and a step of separation of the styrene-rich stream into at least a stream predominantly comprising ethylbenzene, a stream predominantly comprising styrene and a stream of heavy compounds.