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US 8,940,915 B2Granted
Solvent for recovery of maleic anhydride from a gas stream
AssigneeHuntsman Petrochemical Corporation
InventorsWilliam Alan Smith, Yury Chernyak
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AssigneeHuntsman Petrochemical Corporation
InventorsWilliam Alan Smith, Yury Chernyak
Estimating the term…
A process is described for producing crude maleic anhydride from a reactor effluent stream containing maleic anhydride. The reactor effluent stream is contacted with a solvent having a normal boiling point between about 250° C. and about 350° C., solubility of fumaric acid at least about 0.06 wt % at 60° C., solubility of maleic anhydride at least about 10 wt % at 60° C., solubility in water no higher than about 100 mg/L, density different from the density of water by at least about 0.020 g/mL, and water soluble hydrolysis products with molecular weight no higher than the molecular weight of pentanol. The solvent may be non-cyclic, non-aromatic, linear, and/or branched, and may have the general structure R1COOR2COOR3, wherein R1 and R3 are each linear or branched C3 to C5 groups and R2 is a linear or branched C3 to C8 group.
A process for producing crude maleic anhydride, comprising:
A process for producing crude maleic anhydride, comprising:
A process for producing crude maleic anhydride, comprising:
Dependencies are inferred from the claim text.