Mitsubishi Chemical process flow diagram

The Mitsubishi Gas Chemical Low-Pressure Methanol Synthesis Process. A schematic flow diagram of the process developed by the Mitsubishi Gas Chemical Company [27] is shown in Figure 3.16. This process also uses a copper-based methanol-synthesis catalyst and is operated at temperatures of 200-280°C over a pressure range of 50-150 atm. The temperature in the catalyst bed is kept under control by using a quench-type converter design, as well as by recovering some of the reaction heat in an intermediate stage boiler. The process uses hydrocarbon feedstock. The feed is desulfurized and... 

Figure 3.16 Flow diagram of the Mitsubishi Gas Chemical methanol synthesis process. Source [27].

Figure 10.1 Block flow diagram of Mitsubishi Chemical s 1,4-butanediol manufacturing process.

Production of pure m-xylene is predominantly carried out by a process developed by Mitsubishi Gas Chemical (MGCQ, based on the formation of complexes with HF/BFs.When a Cg-aromatic stream is treated with HF/BF3, two phases form, with m-xylene being selectively concentrated in the HF phase. The efficiency of m-xylene separation is increased by the addition of a diluent, generally a C6-paraffin. Due to the high basicity of m-xylene, its HF/BF3 complex is particularly stable. Pure m-xylene (over 99%) is recovered by thermal decomposition of the complex HF and BF3 are then recirculated. The flow diagram for the MGCC process is shown in Figure 4.23. 

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