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Process Flow Diagram of MEG

Categories Agent Technology and Plants
Payment Terms: L/C, T/T
Delivery Time: 4-12 months
Brand Name: Sanli Fengxiang
Place of Origin: CHINA
Price: 2-10 million
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Process Flow Diagram of MEG

Process Flow Diagram of MEG

Agent Technology and Plants

Technology Introduction:

There are two main routes for Ethylene Glycol (Monoethyle Glycol/MEG) production: one is the Olefin/EO(Ethylene Oxide) Route starting from either naphtha, ethane or methanol, the licensors include Shell, SD, UCC and etc. And the other is the DMO(dimethyl oxalate) Route newly emerged in China these years, starting from syngas. Depending upon the difference operation pressure, this DMO Route is further divided into Normal Pressure Process and Medium-High Pressure Process.

SL TECH offers the most advanced and the most competitive Medium-High Pressure DMO Process for MEG production. Its production cost is much lower than that of Olefin/EO Process at the current low oil price (i.e., USD 67/ BBT), not to mention the Normal Pressure DMO Route.

Technical Features:

The MEG plant provided by SL TEC has advantages as follows:

1. The pressure of the carbonylation unit is increased to 2.0-3.0MPa, about 5-7 times the conventional process, thereby the diameter of main equipment and pipes are reduced by 2-2.5 times.

2. The carbonylation reactor is changed from tubular type to plate type, whose heat transfer effect is increased by one time, the catalyst loading coefficient increased by over 60%, the STY (Space-to-Time Yield) more than doubled, which allows the large scale of each production line.

3. The catalyst has better selectivity, higher conversion yield and longer service time ( over 2 years)

4. The CAPEX of the carbonylation unit is reduced by 50%, while the investment of the carbonylation unit takes 40% of the total investment.


1. Product Specification

S/NItemQuality Specification
1Visual apprearanceClear and colorless liquid, mechanical impurities free
2MEG, wt%≧99.8
3Color (Pt/Co)
Before heating
After heating with HCl


4Specific gravity @ 20oC, g/cm31.1128-1.1138
5Water, wt%≦0.1
6Boiling Range (at 0oC, 0.10133MPa)


7Acidity as Acetic Acid, wt%≦0.001
8Aldehyde as formaldehyde, wt%≦0.0008
9Iron as Fe2+, ppm wt≦0.07
10Ash, wt%≦0.001
11UV transmission, %


2. Specific Consumption

S/NItemConsumption Rate
1CO, Nm3/ mt of EG780
2H2, Nm3/ mt of EG1580
3O2, Nm3/ mt of EG186
4Methanol, kg/mt of EG20
5Liquid Ammonia, kg/mt of EG2
6Steam, mt/ mt of EG3.6-4.3
7Electricity, KWH/mt of EG240
8Circulating water (delta=10oC), mt/mt of EG380
9Water, mt/mt of EG5
Quality Process Flow Diagram of MEG for sale
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