Method for purifying ethylene glycol product
A technology for ethylene glycol and products, applied in the field of ethylene glycol product purification
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1~9
[0018] Load 100 grams of 35% Cu+5% Zn / SiO by catalyst weight in a fixed bed reactor 2 The copper-containing solid oxide catalyst is passed into the ethylene glycol product raw material obtained by the hydrogenation of dimethyl oxalate, and the purity is 99.8% (the ultraviolet transmittance of the raw material is as shown in Table 1), at a temperature of 150 ° C, a pressure of 2.0 MPa, airspeed 10 hours -1 , under the condition that the hydrogen / alcohol molar ratio is 5:1, pass through the copper-containing solid oxide catalyst, contact with the catalyst, and obtain the purified ethylene glycol effluent, and the result after rectification is shown in the following table:
[0019] Table 1
[0020]
Embodiment 10~18
[0022] Load 100 grams of 40% Cu+10% Zn / SiO by catalyst weight in a fixed bed reactor 2 The copper-containing solid oxide catalyst is passed through the ethylene glycol product obtained by the hydrogenation of dimethyl oxalate as a raw material, and the purity is 99.8% (the ultraviolet transmittance of the raw material is 6 at 220nm, 91 at 275nm, and 91 at 350nm. 96), the results obtained under different reaction conditions are shown in the table below:
[0023] Table 2
[0024]
Embodiment 19
[0026] Load 100 grams of 20% Cu+5% Ni / SiO by catalyst weight in a fixed bed reactor 2 The copper-containing solid oxide catalyst is passed through the ethylene glycol product obtained by hydrogenation of diethyl oxalate as a raw material, and the purity is 99.9% (the ultraviolet transmittance of the raw material is 3 at 220nm, 92 at 275nm, and 92 at 350nm. is 97), at a temperature of 190°C, a pressure of 2.0MPa, and a space velocity of 5 hours -1 , under the condition that the hydrogen / alcohol molar ratio is 2:1, pass through a copper-containing solid oxide catalyst, contact with the catalyst to obtain purified ethylene glycol effluent, and the result after rectification is: the ultraviolet transmittance is at 220nm 78, 96 at 275nm, and 100 at 350nm.
PUM
Property | Measurement | Unit |
---|---|---|
transmittivity | aaaaa | aaaaa |
transmittivity | aaaaa | aaaaa |
transmittivity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com