【Ten Years of Great Progress in Chemical Technology】The world’s first production facility for melamine using the pressurized vapor phase process with a daily output of 200 tons was put into operation from 179 to 2017
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Ten years of rapid development in chemical technology – praise for China’s prosperity and strength. This is just a starting point; more participation from everyone will make things even more lively. HaiChuan becomes even better with your involvement; we welcome everyone to join in the forum discussions. Be careful with fire risks as the heat increases in July. -------------------------------------------- On June 15, 2017, an inauguration ceremony was held at Xinjiang Jinxiang Sairui Coal Chemical Technology Co., Ltd. for the first large-scale production facility for melamine, capable of producing 200 tons per day using the pressurized vapor method, which was built by Sichuan Jinxiang Sairui Chemical Co., Ltd. The newly commissioned large-scale melamine production facility with a daily output of 200 tons, which uses the pressurized vapor-phase method, adopts an energy- and cost-saving vapor-quenching process for melamine production that was independently developed by Sichuan Jinxiang. It is the first advanced facility of its kind in the world to achieve a daily output of 200 tons of melamine using a single reactor in a single production line. This device features low investment costs, low energy consumption, high quality, zero emissions in the production process, a high degree of automation, stable operation over long periods, minimal requirements for auxiliary utilities, good economic benefits, and environmental friendliness. The second set of similar facilities at Xinjiang Jinxiang is under construction and will go into operation by the end of 2017. Compared with Jinxiang’s existing melamine plants, structural optimizations of the reactions and key equipment, adjustments to the process design parameters, improvements to the reaction catalysts, and enhancements to the process operation methods have resulted in a production capacity increase of over 20%, a 30% reduction in overall energy consumption, further decreases in urea usage, and an increase in the proportion of high-quality products from 94% to over 99%. The device was successfully started up in one attempt on April 9, 2017. Based on preliminary operational assessments, its designed production capacity is 200 tons per day, while the actual capacity reached 203 tons per day. Moreover, as the equipment becomes better tuned and operator skills improve, the production capacity is likely to increase further, along with a corresponding reduction in consumption.
The consumption metrics show that for each ton of melamine produced, this device uses 2.99 tons of urea, 0.55 tons of coal, 515 kwh of electricity, and less than 0.15 kilograms of catalyst; in addition, it generates 2.2 tons of steam as a by-product.
For a long time, advanced production technologies for melamine have been monopolized by foreign companies such as DSM of the Netherlands, Linz Chemicals of Austria, Otech of Italy, and BASF of Germany. Domestic facilities suffer from issues such as small scale, high consumption, unstable product quality, and severe pollution. The few large-scale installations available mostly utilize technologies and key equipment imported from developed **companies; they require substantial investment, generate high energy consumption, and offer poor economic returns.
After ten years of research and development, Jinxiang Company’s large-scale technology for producing melamine using the pressure-vapor method has not only significantly reduced the production costs of melamine but also enabled technology export through its adoption by the German company Lurgi in Russia. To date, multiple patents have been obtained in China, as well as patent approvals in the United States, Japan, the European Union, Russia, South Korea, and other countries and regions.
【Ten Years of Great Development in Chemical Technology】179-2017: China’s first project for \"pressurized vapor-phase extraction to produce 50,000 tons of melamine along with urea\" https://bbs.hcbbs.com/thread-4403451-1-1.html (Source: Haichuan Chemical Industry Forum Website)
Through its partnership with Beijing Yejing, Jinxiang has developed a set of advanced technologies for the production of melamine using the pressurized vapor quenching method, which represents world-class standards and has established Jinxiang’s influence in this field. By 2020, the company had an annual production capacity of 420,000 tons of melamine, making it the largest melamine producer in the world; it held 30% of the domestic market share and 20% of the global market share. The company has also entered into partnerships with companies such as BASF to build a production facility in Russia capable of producing 120,000 tons of melamine per year；