MEG (mono-ethylene glycol)

There are two main route 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.

Introduction

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-TECH has advantages as follow:

● The pressure if the carbonylation unit is increased to 2.0~3.0 MPa, about 5~7 times of the conventional process, thereby the diameter of core equipment and pipes are reduced by 50%~60%.

● The carbonylation reactor is changed from tubular to a 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.

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

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

MEG specification

S/N	Item	Index
1	Visual appearance	Clear and colorless liquid, without mechanical impurities
2	MEG, wt% ≥	99.8
3	Color（Pt-Co）
	Before heating ≤	5
	After heating with HCl ≤	20
4	Specific gravity@ 20 ℃，g/cm³	1.1128-1.1138
5	Water, wt% ≤	0.1
6	Boiling Range (@ 0℃，0.10133 MPa)
	IBP ≥	196
	FBP ≤	199
7	Acidity as per acetic acid, wt% ≤	0.001
8	Aldehyde as per formaldehyde, wt% ≤	0.0008
9	Iron as per Fe2+, ppm wt ≤	0.07
10	Ash, wt% ≤	0.001
11	UV transmission, %
	220nm ≥	75
	275nm ≥	92
	350nm ≥	99

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Ethylene Industry(C2)

MEG (mono-ethylene glycol)

Introduction

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All Categories

Ethylene Industry(C2)

MEG (mono-ethylene glycol)

Introduction

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