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World's First! Shenghong's Total EVA Capacity to Reach 1 Million Tons/Year!
Polyolefins Person 2025-03-20 13:48:34

The Shenghong Chemical New Materials Project is a major industrial project in Jiangsu Province, with a total investment of about 21.6 billion yuan, planning to construct an annual production capacity of 700,000 tons of EVA, 50,000 tons of high-end polyolefins, as well as projects for propylene oxide, styrene, and polyols.

Recently, the construction of the EVA facility in the project has progressed rapidly, with the second unit entering the trial production phase, and the third one also under intense construction. It is expected that upon full completion, Shenghong Petrochemical's total EVA production capacity will reach 1 million tons per year, ranking first in the world.

图片

It is understood that the Shenghong Chemical New Materials project includes five sets of EVA (ethylene-vinyl acetate copolymer) equipment, three tubular EVA and two autoclave EVA, with an annual production capacity of 600,000 tons of EVA after full construction. Currently, the first set of EVA equipment has been put into production on October 27, 2024, and at the end of this month, the second set of EVA equipment will enter the trial production phase, while the third set of EVA equipment is under intense construction.

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Shenghong Group's EVA-related layout

under construction EVA

On March 28, 2023, Dongfang Shenghong announced that its third-level wholly-owned subsidiary, Jiangsu Hongjing New Materials Co., Ltd., is investing in the construction of the Shenghong Chemical New Materials Project (Phase I), which includes a 600,000 tons/year photovoltaic-grade ethylene-vinyl acetate copolymer (EVA) facility.

The Shenghong new materials project is divided into two parts: Hongwei and Hongjing.
Hongwei section: invested and constructed by Jiangsu Hongwei Chemical Co., Ltd., including a POSM project, constructing a 508,000 tons/year ethylbenzene unit, a 200,000/450,000 tons/year POSM unit, an 112,500 tons/year PPG unit, and a 25,000 tons/year POP unit.
Hongjing section: invested and constructed by Jiangsu Hongjing New Materials Co., Ltd., with a total investment of approximately 15.58 billion yuan, covering an area of about 1,395 mu, to build an annual production capacity of 3×200,000 tons of photovoltaic-grade ethylene-vinyl acetate copolymer (EVA), 100,000 tons of high-end hot-melt adhesive grade ethylene-vinyl acetate copolymer (EVA), high-end copolymer new materials, and related public utilities and auxiliary facilities.
After the construction of 5 EVA facilities, Shenghong Group's cumulative EVA production capacity will reach 1.05 million tons, making Shenghong a world-class EVA production base.

proposed EVA project

At the same time, in June this year, the environmental impact assessment acceptance announcement for the 500,000 tons/year EVA project (Phase II) and the high-end copolymer new materials project (Phase II) of Jiangsu Hongjing New Materials Co., Ltd. (hereinafter referred to as "Hongjing New Materials") was conducted.
  • 500,000 tons/year EVA project (Phase II)

According to previously disclosed information, the total investment for the 500,000 tons/year EVA project is 6.964 billion yuan, with the project being constructed in phases. The total investment for the first phase of the project is approximately 4.909 billion yuan, and the total investment for the second phase is 2.055 billion yuan.

This 500,000 tons/year EVA project (Phase II) involves the construction of a 100,000 tons/year high-end hot melt adhesive grade ethylene-vinyl acetate copolymer unit and other auxiliary supporting facilities. The product process technology originates from the American ECI reactor method. After the project is completed, it can achieve an annual production capacity of 100,000 tons of EVA products, 240 tons of EVA-SC material, 4,800 tons of crude ethylene, 120 tons of polymer derivatives (wax), and 800 tons of ultra-low molecular weight polymers.
  • advanced copolymer new materials project (phase two)

The high-end copolymer new material project (phase two) has a total investment of approximately 1.607 billion yuan, with plans to build one 50,000 tons/year high-end copolymer new material facility. After completion, the same production facility will achieve an annual output of 30,000 tons/year EVA, 10,000 tons/year EnBA, and 10,000 tons/year EMAA; simultaneously, it will produce 2,000 tons/year crude ethylene, 400 tons/year reaction oligomers, 80 tons/year SC material, and 40 tons/year polymer derivatives (wax).

The project adopts the autoclave process technology patented by ECI of the United States. By directly injecting cold ethylene from the primary machine outlet cooler into the reaction stream for cooling, using cold ethylene heat exchange ensures uniform cooling of the product, making it less likely to produce crystal points or fish eyes. Comonomers are added to the secondary machine outlet with a high-pressure pump, reducing the content of acidic substances in the compressor, which is beneficial for the long-term operation of the compressor system. The reactor's maximum operating pressure is 280MPaG, with a wide operating range and lower polymerization temperature. Compared to other high-pressure autoclave processes, it can produce products with a narrower molecular weight distribution. Currently, there are many ECI process installations in operation, mostly 50,000 tons/year autoclave units, some of which have been safely running for over 50 years. The process has a low frequency of ethylene decomposition and high operational safety.

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