Total investment of 2.5 billion! Satellite chemical 700,000 tons/year ethylene oxide optimization project environmental impact assessment documents accepted

On October 31, the 700,000 tons/year ethylene oxide optimization project of Lianyungang Petrochemical Co.
, Ltd.
, a subsidiary of Satellite Chemical, was accepted
for environmental impact assessment documents.

Basic information of the project

Project Name: Lianyungang Petrochemical Co.
, Ltd.
700,000 tons/year ethylene oxide optimization project;

Project nature: expansion;

Construction: Lianyungang Petrochemical Co.
, Ltd.
;

Construction content: This project will build 1 set of 700,000 tons/year ethylene oxide plant, cryogenic water system, fire water station, steam turbine plant, cabinet room, substation, accident pool, deluge valve room, EO tank farm and related supporting circulating water station and air separation device (including argon system) and other auxiliary facilities
.

Construction location: Lianyungang Petrochemical Industry Base Lianyungang Petrochemical Co.
, Ltd.
, Xuxu New District, Lianyungang City, Jiangsu Province;

Land area: The project does not add new land acquisition, and is constructed in the existing main factory area, covering an area of about 10.
992 hectares;

Total investment: 2500000 yuan, the environmental protection investment of this project is about 250.
5 million yuan, accounting for about 10.
02% of the project construction investment;

Labor quota and work system: the labor quota of this project is 44 people, transferred from the existing project, no new labor quota, four shifts and three operation system, annual working time of 8000 hours (333 days);

Construction period: 26 months
.

Construction scale and product plan

This project constructs a set of ethylene oxide plant and an air separation plant
.
The construction scale of the specific process equipment is shown in the following table
.

The ethylene oxide plant products of this project are mainly ethylene
oxide.
The air separation plant products of this project are mainly liquid argon, liquid oxygen, liquid nitrogen, oxygen and nitrogen
.
The ethylene oxide aqueous solution and ethylene glycol aqueous solution produced by the ethylene oxide plant of this project are fed into the existing 1# and 2# EO/EG plants to produce monoethylene glycol (MEG), diethylene glycol (DEG), triethylene glycol (TEG).

Construction content

The construction content of this project mainly includes main engineering, public and auxiliary engineering, storage and transportation engineering, environmental protection engineering, and relying engineering
.
The main new contents are:

This project will build a new set of 700,000 tons/year ethylene oxide plant
.

This project builds a new set of 48000m₃/h air separation plant (including argon system).

In this project, a fire water pumping station is installed on the south side of the circulating cooling water station, equipped with 80m₃ fire water tanks
.

A new circulating cooling water station
was built for this project.

A new accident tank with a volume of 6000 m 3 (and initial rainwater collection tank), a production wastewater collection tank with a volume of 2320 m 3, and a production wastewater collection tank
with a volume of 200 m₃ were built.

This project will build a new 35kV regional substation with 35kV dual-circuit power supply; The project builds a new steam turbine room (waste heat power station), and the waste heat power station is equipped with 1 12MW back-pressure turbine generator set, 1 7.
5MW back-pressure turbine generator set and 1 6MW back-pressure turbine generator set;

A new EO tank farm with 8 EO tanks was built for this project; A new liquid argon tank farm was built, with a total of 1 liquid argon storage tank; In this project, a new liquid argon loading platform was built, and the loading pump was used to connect the truck
through a hose.

The project built new pipelines and pipe galleries
in the plant.

In this project, two new deluge valve rooms were built, namely the deluge valve room of the ethylene oxide plant tank farm and the deluge valve room
of the ethylene oxide unit.

A new cabinet room
was built for this project.

Process conditions

The ethylene oxide plant of this project adopts Shell technology, through the world's most advanced ethylene oxide production process - oxygen oxidation method, using ethylene and oxygen as raw materials to produce ethylene oxide (EO), the plant is designed to produce 696,000 tons of ethylene oxide per year, the operating flexibility is 60-110%, and the annual operation time is 8000 hours
.
The ethylene oxide plant of this project mainly includes EO reaction unit,^CO2 removal and EO recovery unit, light component removal and EO refining unit
.

Origin of the project

In 2019, Lianyungang Petrochemical invested in the construction of the "Comprehensive Processing and Utilization Project with an Annual Output of 3.
2 Million Tons of Light Hydrocarbons", which includes combined light hydrocarbon cracking plants (light hydrocarbon cracking unit, butadiene extraction unit, aromatic hydrocarbon extraction unit), HDPE plant, LLDPE plant, LDPE plant, EO/EG plant, acrylonitrile combined unit, etc
.
Among them, there are three sets of EO/EG plants, and the design scale of a single EO/EG plant is 720,000 tons/year of ethylene oxide and 910,000 tons/year of ethylene glycol
.
Among them, the 1#EO/EG plant products are 100,000 tons/year of ethylene oxide and 859,900 tons/year of ethylene glycol; The product scheme of the 2# and 3# EO/EG units is the same, both of which are 200,000 tons/year of ethylene oxide and 721,200 tons/year of ethylene glycol
.
At present, the 1# EO/EG plant and the 2#EO/EG plant have been built and put into operation, while the 3#EO/EG plant has not yet been built
.

At present, Lianyungang Petrochemical has approved the demand for ethylene oxide for HPEG plant, TPEG plant, PEG plant, NIS plant, ethanolamine plant and carbonate plant of 756,492 tons / year, and the total design capacity of ethylene oxide of the existing 3 sets of EO/EG plant is 500,000 tons / year, which cannot meet the demand
in the plant 。 Considering that Lianyungang Petrochemical Co.
, Ltd.
's HPEG plant, TPEG plant, PEG plant, NIS plant, ethanolamine plant and carbonate plant have a large demand for ethylene oxide, and the current ethylene glycol market is relatively sluggish and the ethylene oxide market is better, Lianyungang Petrochemical Co.
, Ltd.
plans to abandon the construction of 3# EO/EG plant and build a new ethylene oxide plant, which can produce about 696,000 tons of ethylene oxide per year
after the plant is put into operation.