Method for separating aromatic compounds using simulated moving bed operation
AssigneeSamsung Total Petrochemicals Co., Ltd.
InventorsJin-Suk Lee, Nam-Cheol Shin
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Abstract
Disclosed is a method for separating aromatic compounds using a simulated moving bed (SMB) operation, characterized by injecting each raw material having a different composition into each different part of an adsorption chamber so as to improve the recovery rate. More specifically, the present invention provides a method for separating aromatic compounds for improving p-xylene separation in a p-xylene separation process, by injecting a high p-xylene mixture from selective toluene disproportionation process (STDP) and low p-xylene mixture from other processes (for example, processes of reformer, isomerization reactor and transalkylation of aromatics having 9 carbon atoms) into each different part of an adsorption chamber.
Claims4
A method for separating aromatic compounds using a simulated moving bed (SMB) operation, which comprises SULFORANE process that is a benzene/toluene fractionation and a non-aromatic compound removing process;
- selective toluene disproportionation process;
- transalkylation process;
- xylene isomerization process;
- and p-xylene separation process, characterized by separately injecting a high p-xylene mixture from the selective toluene disproportionation process and a low p-xylene mixture from other processes into each different part of an adsorption chamber in the p-xylene separation process.
Dependencies are inferred from the claim text.