A residue-reducing and environmentally friendly propylene oxide saponification reaction method
By using inorganic alkali with controlled particle size to carry out saponification reaction with chlorohydrin, the production process of propylene oxide has been optimized, solving the problems of excessive waste and high energy consumption in existing technologies, and realizing efficient and environmentally friendly propylene oxide production.
Patent Information
- Application Number
- CN202510447879.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2045-04-10
AI Technical Summary
Among the existing methods for producing propylene oxide, the chlorohydrin method generates a large amount of waste residue, the ethylbenzene co-oxidation method is energy-intensive and toxic, the isobutane co-oxidation method produces many byproducts, and the direct hydrogen peroxide oxidation method is costly. Existing technologies struggle to find a balance between environmental protection and economic efficiency.
Inorganic bases with an average particle size D≤1000μm, such as Ca(OH)2 or CaO, are used to carry out saponification reactions with chlorohydrins in the presence of alkali. The saponification reaction temperature is controlled at 80-95℃, and waste residue is reduced through concentration and acidification treatment to optimize the propylene oxide production process.
It improves the efficiency of saponification reaction, reduces the amount of calcium hydroxide used and the amount of solid waste produced, and has significant economic and environmental advantages.