Is there any interest in producing ethylene carbonate using the urea method?

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The main production methods for ethylene carbonate (EC) include the direct pressure synthesis using carbon dioxide and ethylene oxide as raw materials, the urea hydrolysis method, and the phosgene method. Due to the high toxicity of phosgene, this method has been phased out. 1. The pressure synthesis method for producing vinyl carbonate from carbon dioxide and ethylene oxide was first industrialized in Germany. This method is a mature industrial production technique and is the only production process currently available in the country. 2. The urea method: The urea hydrolysis method can address the environmental hazards and stringent operating conditions associated with the phosgene method and the ethylene oxide method. Moreover, urea is inexpensive and readily available, and low purity requirements for ethylene glycol result in lower production costs. Therefore, the urea hydrolysis method shows a trend of replacing other synthesis methods as the primary process for production. Under the action of solid catalysts, urea and ethylene glycol are used to synthesize EC. This reaction features a simple process, easy catalyst separation, as well as high selectivity and conversion rates. At present, this process is still in the pilot stage, but it holds potential for industrial production. The advantages of establishing a project for producing ethylene carbonate using the urea method are as follows: 1. In terms of process costs, preliminary calculations show that the urea method is less costly for producing ethylene carbonate, giving it a competitive advantage. 2. Development in the downstream sector of urea: With the recent decline in urea prices, attention is focused on the development of the downstream areas by companies that produce urea, with an emphasis on developing unique process technologies to ensure the company’s competitiveness in the long term. 3. Due to the traditional ethylene oxide process, geographical constraints related to transportation distances mean that the vast majority of enterprises can only operate in coastal areas. Currently, however, many battery factories and electrolyte manufacturers are located in the central and western regions, resulting in a sharp increase in transportation costs! The urea method is not restricted by geography, thus solving the problem very well! 4. The raw materials, urea and ethylene glycol, are both common commodities with stable and low prices; thus, they offer greater stability compared to ethylene oxide, which is affected by fluctuations in crude oil prices Furthermore, the purity requirements for raw materials are not high; the powder by-products produced by most urea manufacturers are difficult to sell at even lower prices, generally not exceeding 1,800 yuan per ton. For ethylene glycol, industrial-grade purity is sufficient to meet usage requirements, and its price generally does not exceed 3,500 yuan per ton. Overall, the process of producing EC using the urea method is not only feasible but also highly competitive. As global situations become unstable and the chemical industry enters a period of decline, it is crucial for companies to possess unique core technologies in order to maintain their competitiveness.