Method and apparatus for preparation of alkylene carbonate using polyamine-heterogeneous catalyst
AssigneeKorea Institute of Science and Technology
InventorsIn Wook NAH, Jae Ik KIM, Soon Jong KWAK, In Hwan OH
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Abstract
Disclosed are a method and an apparatus for preparing an alkylene carbonate using a polyamine-based heterogeneous catalyst. The rapid increase in reactor temperature and the risk of explosion due to heat of reaction may be prevented by recycling the produced alkylene carbonate to the reactor. Accordingly, it is possible to obtain the alkylene carbonate stably and continuously with high yield while maintaining reaction temperature and pressure constant.
Claims12
A method for preparing an alkylene carbonate, comprising a step of reacting an alkylene oxide in liquid state and carbon dioxide in gas state in a catalytic reactor with a polyamine-based catalyst in solid state via upward flow.
An apparatus for preparing an alkylene carbonate, comprising:
- a reactor filled with a polyamine-based heterogeneous catalyst;
- a pump which supplies an alkylene oxide and carbon dioxide as raw materials to the reactor;
- a storage tank wherein an alkylene carbonate produced in the reactor is stored;
- and
- a pump which recycles at least a part of the produced alkylene carbonate to the reactor.
Dependencies are inferred from the claim text.