Method for recovery of condensed alcohol ether in epoxypropane wastewater

A technology of propylene oxide and resource utilization, which is applied in chemical instruments and methods, organic chemistry, hydrolysis preparation, etc., can solve the problems of high processing cost and waste of resources, and achieve the effects of clear environment, extended service life and mild reaction conditions
CN110256203AActive Publication Date: 2019-09-20JIANGSU YANGNONG CHEM GROUP +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU YANGNONG CHEM GROUP
Publication Date
2019-09-20

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Abstract

The invention provides a method for resource utilization of condensed alcohol ether in epoxypropane wastewater, which comprises the following steps: treating desalted wastewater generated by an HPPO process through a modified molecular sieve catalyst to hydrolyze the condensed alcohol ether into propylene glycol and methanol so as to recover the propylene glycol and methanol from the wastewater. The method is easy for downstream biochemical treatment and improves the economical efficiency.
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Description

technical field

[0001] The invention belongs to the technical field of petrochemical industry and provides a resource utilization method of condensed alcohol ether in propylene oxide wastewater. Background technique

[0002] Propylene oxide is the second largest category of propylene derivatives next to polypropylene. It is mainly used to produce polyether polyols, and then to produce polyurethanes. It is widely used in chemical industry, light industry, medicine, food and other industries. At present, domestic production methods of propylene oxide include: chlorohydrin method, co-oxidation method, hydrogen peroxide direct oxidation method (HPPO method). The HPPO method uses hydrogen peroxide to catalyze the oxidation of propylene to synthesize propylene oxide under the action of a titanium-silicon molecular sieve catalyst. The HPPO method has a simple process, mild conditions, and a single product, and has the advantage of producing less wastewater than the chlorohydrin me...

Claims

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