Since 2022, Sinochem International has successively completed and put into operation major facilities such as phenol acetone, bisphenol A, epoxy chloropropane, and epoxy resin as part of its first-phase C3 project. The 600 ktpa propane dehydrogenation (PDH) facility was recently commissioned for trial production, marking the complete integration of the entire epoxy resin industry chain at Sinochem International’s site in Lianyungang.
Over the years, Sinochem International has undergone a strategic transformation, evolving from a trading-oriented company into an internationally operated conglomerate primarily focused on fine chemical production. Through investments and acquisitions, the company has acquired a significant number of high-quality assets, including majority stakes in companies like Sennics, Yangnong Chemical, Elix Polymers, among others, laying a strong foundation for a successful industrial transformation. The company’s business encompasses chemical intermediates, polymer additives, new materials, new energy, and other traditional sectors, with complementary advantages between industries. Leveraging a green and circular economy industrial chain, Sinochem International has achieved continuous product diversification and efficient resource utilization, establishing a core competitive edge. The products offered include chlorobenzene series, nitrochlorobenzene series, widely used in industries such as pharmaceuticals, agrochemicals, and dyes. In the field of new materials, the company deals with high-performance fiber materials like aramid and high-strength polyethylene, as well as materials like epoxy chloropropane and epoxy resin used in industries such as coatings and electronics. They also handle lightweight materials such as PU, PC, PS, ABS, and others.
It's worth mentioning that Sinochem International’s C3 project, with a production capacity of 400 ktpa of propylene oxide (PO), is expected to start commissioning on November 8 and is projected to produce qualified products in early December.
In the context of increasingly stringent environmental regulations, traditional chlorohydrin processes, which have not effectively addressed the “three wastes” issue, are gradually being phased out. In the draft of China’s 2023 Catalogue for Guiding Industry Restructuring, issued by National Development and Reform Commission on July 14, 2023, the calcium saponification chlorohydrin process should be eliminated by December 31, 2025. Following the elimination of a 50 ktpa chlorohydrin-based facility in Shandong, in recent years, chlorohydrin-based PO facilities, such as those in Jinpu, Tianjin, and Fujian, have successively ceased operations. As a result, the proportion of chlorohydrin processes has decreased from 55.9% in 2018 to 27.1% in 2022.
Currently, new PO facilities primarily use direct oxidation (HPPO) and cooxidation (PO/SM, PO/TBA) processes.
Sinochem International is expanding its capacity by 400 ktpa using the direct oxidation process for PO production, and its scale and technology are at the forefront domestically. The C3 project includes a 400 ktpa HPPO facility with supporting facilities, in line with national environmental protection policies. As an environmentally encouraged process, the direct oxidation process can overcome the drawbacks of severe equipment corrosion and high waste generation associated with chlorohydrin processes. This method features a simple process, high product yield, and only generates PO and water during production. Raw materials and auxiliary agents can be recycled, resulting in lower raw material and energy consumption and a significant reduction in production costs. It is also environmentally friendly and non-polluting. Furthermore, the direct oxidation process is expensive and challenging to acquire, with a high entry barrier. Once the facility is operational, Sinochem International will hold a leading position in terms of production capacity and technology in the domestic market.
Dimethyl carbonate (DMC) is a co-product produced by ester exchange in the production of propylene glycol. Thanks to green chemistry, new energy promotion, and sustainable development, DMC has gained attention due to its low toxicity and excellent environmental performance. It finds wide applications in various industrial fields. Apart from its traditional uses in adhesives, coatings, developers, and polycarbonates, DMC has seen significant growth in the downstream applications of lithium-ion battery electrolyte solvents, which now account for 30% of its usage. High purity is crucial for these applications, with industrial-grade DMC primarily used in traditional downstream applications and polycarbonates (PC), while battery-grade DMC requires higher purity. Currently, suppliers of battery-grade DMC include Shida Shenghua (75 ktpa), Oxiranchem (20 ktpa), etc. New entrants in this market include Capchem, Sinochem Quanzhou, Zhejiang Petrochemical, and Hualu Hengsheng. In the next 3-5 years, the newly established production capacity for carbonates in China is expected to exceed 4 mtpa, contributing to the increased demand for PO.
