SUCCINIC ANHYDRIDE FROM ETHYLENE OXIDE
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Abstract
Continuous flow systems and methods produce succinic anhydride by a double carbonylation of ethylene oxide with carbon monoxide and at least one catalyst. In some embodiments, the double carbonylation occurs using a single catalyst. In other embodiments, a first catalyst is used to promote the first carbonylation, and a second catalyst different from the first catalyst is used to promote the second carbonylation. The succinic anhydride is isolated from the product stream by crystallization and the catalyst is recycled to the reaction stream.
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Citations
59 Claims
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1-51. -51. (canceled)
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52. A succinic anhydride synthesis system comprising:
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a carbon monoxide source; an ethylene oxide source; a solvent source; a catalyst source; at least one reaction vessel fed with a reaction stream by the carbon monoxide source, the ethylene oxide source, the solvent source, and the catalyst source, the reaction stream comprising carbon monoxide, ethylene oxide, solvent, and catalyst;
wherein the catalyst comprises a transition metal carbonyl compound and a Lewis acidic co-catalyst;a cooling crystallizer fed from the at least one reaction vessel; a rotary drum filter fed by the cooling crystallizer; and a solids dryer fed by the rotary drum filter. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59)
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Specification