Process and system for producing ethers

By using a side flow circulation device in the ether production system, the side flow is condensed and supplied to the second etherification reactor system, the problems of catalyst material deactivation and frequent replacement are solved, and more efficient ether production is achieved, reducing costs and reducing the risk of system downtime.

CN119731145APending Publication Date: 2025-03-28NESTE OYJ
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Patent Information

Application Number
CN202380059236.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-08-26
Filing Date
2023-08-07
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the prior art, the catalyst material used to produce tertiary alkyl ethers is gradually deactivated and needs frequent replacement, resulting in increased material and labor costs, and may lead to system downtime and affect production efficiency.

Method used

The side flow circulation device is used to condense the side flow in the distillation column system and then supply it to the second etherification reactor system to form a cycle process, thereby reducing the ether concentration in the input feed of the etherification reactor system and extending the service life of the catalyst.

Benefits of technology

With the side flow circulation device, more ether can be produced using the same amount of catalyst material, or the same amount of ether can be produced using a smaller amount of catalyst material, thereby reducing material and labor costs and reducing the possibility of system downtime.

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Abstract

A system for producing ethers includes a processing system (101) that receives alcohol and olefin feedstocks and includes a first etherification reactor system (102) that produces a first reaction effluent (103). The system includes a distillation column system (100) that receives a mixture (105) containing a first reaction effluent to produce an ether. The system includes a side stream outlet (107) that extracts a side stream (108) from the distillation column system, and a second etherification reactor system (110) that receives the side stream and produces a second reaction effluent (111). The second reaction effluent is mixed with the first reaction effluent, and the mixture (105) is supplied to a distillation column system. This side stream enables the production of a given amount of ethers with less amounts of catalyst material.
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