SELECTIVE METHYLATION TO PARA XYLENE USING FUEL SYNGAS

• Main Author: JOHN OU
• Format: Patent
• Language: English; Spanish
• Published: 02.09.2002
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

It has been discovered that para xylene (PX) can be synthetized with improved selectivity by reacting an aromatic compound such as toluene and or benzene with a reactant(s) from fuel syngas such as a combination of hydrogen and carbon monoxide and or carbon dioxide and or methanol or methylating agents produced therefrom. The combination of the selective methylation technology and a source of fuel syngas creates several advantages including simplification of the selective methylation process and utilization of low cost feeds. The fuel syngas is used on a once through basis. Se ha descubierto que puede sintetizarse para-xileno (PX) con mejorada selectividad haciendo reaccionar un compuesto aromatico, tal como tolueno y/o benceno, con reactivo (s) a partir de gas de sintesis combustible, tal como una combinacion de hidrogeno y monoxido de carbono y/o bioxido de carbono y /o metanol o agentes de metilacion producidos a partir de aquel. La combinacion de la tecnologia de metilacion selectiva y una fuente de gas de sintesis combustible aporta diversas ventajas, incluyendo la simplificacion del proceso de metilacion selectiva y la utilizacion de alimentaciones de bajo costo. El gas de sintesis combustible es usado en una base de paso a, su traves una vez.