Recovery of salt wastes in the production of propylene oxide
In the production of propylene oxide as much as 40 t dilute calcium chloride solution forms per ton of product in the step of saponification of propylene chlorhydrine with milk of lime. To create a zero-waste technology for production of propylene oxide, there is practical interest in saponification of propylene chlorhydrine with electrolysis brines with recovery of the resultant solution of sodium chloride after purification to remove organic impurities. The possibility of using an electrochemical method to purify wastewater from production of propylene oxide in using the purified solution as starting material for production of electrolysis brines was investigated. Experimental testing of processes of purification and recovery of wastewaters in a regime of industrial electrolysis confirmed the possibility of using purified wastewater from production of propylene oxide as brine for electrolysis. Incorporation of the developed method into industry will permit zero-waste production of propylene oxide with a closed salt cycle. The cost of purification of 1 m/sup 3/ wastewater is 1-1.5 rubles.
- OSTI ID:
- 5274761
- Journal Information:
- Sov. Chem. Ind. (Engl. Transl.); (United States), Vol. 15:2; Other Information: Translated from Khim. Prom.; No. 2, 82-83(Feb 1983)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SODIUM CHLORIDES
ELECTROCHEMISTRY
WASTE WATER
PURIFICATION
ALCOHOLS
BRINES
CALCIUM CHLORIDES
COST
EPOXIDES
ORGANIC CHLORINE COMPOUNDS
PROPYLENE
SAPONIFICATION
WASTE PRODUCT UTILIZATION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKENES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
DECOMPOSITION
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROLYSIS
HYDROXY COMPOUNDS
LIQUID WASTES
LYSIS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
SODIUM COMPOUNDS
SOLVOLYSIS
WASTES
WATER
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management