National Energy put 400,000 tons of ethylene glycol into production, which will co-produce PGA degradable plastics, leading the new trend of coal-to-ethylene glycol

The National Energy Group has pioneered the extension of the domestic coal-to-methanol co-production of ethylene glycol to the degradable plastics industry chain.
The intermediate product of the ethylene glycol project, dimethyl oxalate, is used as the raw material to produce polyglycolic acid degradable plastics
.

At 10:00 on November 21, the 400,000-ton/year ethylene glycol project of National Energy Group Yulin Chemical Co.
, Ltd.
opened up the whole process at one time, and successfully produced qualified ethylene glycol products
.

The project adopts the independent technology of the National Energy Group, and is independently designed and constructed by the National Energy Group, and all equipment has been localized.
Among them, the 100,000-ton/year carbonylation reactor of the core device is the largest ethylene glycol carbonylation reaction in operation in China.
device
.
The project started construction in July 2018, and will be completed and delivered in June 2021.
Nitrous oxide was introduced at 21:43 on November 16, and it took 108 hours to produce qualified ethylene glycol products
.
The smooth commissioning of the project has laid a foundation for the next step of converting to polyglycolic acid degradable plastics, and has an important demonstration significance and positive impact on promoting the transformation and development of the national coal chemical industry to "high-end, diversified, and low-carbon"
.

Different from the traditional coal-to-ethylene glycol project, National Energy Group Yulin Chemical Co.
, Ltd.
actively explores a new mode of integrated coal-chemical operation, giving full play to the advantages of large-scale investment and intensive layout
.
It is deeply coupled with the 1.
8 million tons/year coal-to-methanol project that has been completed and put into operation and the world's first 50,000-ton/year polyglycolic acid degradable material demonstration project under construction.
Co-production, and recycling the tail gas emitted by the ethylene glycol unit as the raw material of the coal-to-methanol project, realizing the clean utilization of coal recycling, and significantly improving the economic benefits and environmental protection effects
.

Compared with a coal-to-ethylene glycol plant of the same scale, the investment cost is reduced by about 30%, and the complete product cost is reduced by about 20%
.
At the same time, in order to further extend the industrial chain and improve the value chain, the company relies on dimethyl oxalate, an intermediate product of the ethylene glycol project, as a raw material to produce polyglycolic acid degradable plastics.
Coal consumption can be reduced by about 50%, carbon dioxide emissions can be reduced by about 65%, and industrial added value can be increased by 2 to 3 times
.