【Ten Years of Rapid Development in Chemical Equipment】The first ammonia and carbon separation unit for melamine and cyanuric acid exhaust gases was put into operation from 1768 to 2012

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Happy May Day 2024! Safety first. Let’s give praise and support to the achievements in China’s chemical engineering technology and equipment. **********************[A Decade of Progress in Chemical Engineering Equipment] Continuous updates and summaries available; feel free to participate in the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Industry Forum) ***************** The first set of amine exhaust gas ammonia-carbon separation units has been put into operation, with the comprehensive energy consumption per ton of liquid ammonia being only 35%~40% of that in other processes. Published on June 18, 2012. A celebration ceremony was held in Hongze County, Jiangsu Province, to mark the commissioning of the first phase of Hongze Yinzhu Chemical Technology Co., Ltd.’s melamine project, which involves an annual production capacity of 50,000 tons of melamine, along with the accompanying ammonia-carbon separation units. This marks the industrialization of a new technology that utilizes melamine plant exhaust gases and low-grade steam generated as by-products to produce liquid ammonia and carbon dioxide. On June 8th, a celebration ceremony was held in Hongze County, Jiangsu Province, to mark the commissioning of this facility, thereby signaling the industrial application of this innovative technology. On June 2, the chemical feeding trial run of this melamine production facility was successful, and it has been operating smoothly since then. By June 8, more than 750 tons of melamine and over 700 tons of liquid ammonia had been produced. This new ammonia-carbon separation technology boasts advantages such as low investment costs, low energy consumption, high quality, and stable performance. For exhaust gas treatment, it adopts a patented energy-saving ammonia-carbon separation process with fully independent intellectual property rights, the steam required for this separation being obtained entirely from the process waste heat generated during melamine production. The overall energy consumption per ton of liquid ammonia is only 35% to 40% of that of existing other melamine exhaust gas ammonia-carbon separation processes. The resulting liquid ammonia is free of oil and has an iron ion content of less than 1 ppm, making it suitable for various high-end applications. Hongze Yinzhu Chemical Technology Co., Ltd. has an annual production capacity of 50,000 tons of melamine, along with the corresponding ammonia-carbon separation facilities. This facility is the core component of the company’s initial plan to develop a circular economy project with an annual output of 50,000 tons of melamine, 150,000 tons of soda ash, and 150,000 tons of ammonium chloride. It was built through joint investment by Sichuan Jinxiang Sairui Chemical Co., Ltd. and Jiangsu Yinzhu Chemical Group. This facility is the fourth of its kind in China, built and put into operation following further optimization of a production process for gas-phase quenching that is energy- and cost-saving and ranks among the world’s leading technologies; this process was independently developed by Jinxiang Company in May 2009. Thus, Sichuan Jinxiang Company’s total melamine production capacity has reached 300,000 tons per year, ranking first in the world. According to incomplete statistics, there are over 100 melamine production enterprises in China, with an annual production capacity of nearly 1.8 million tons; 75% of this capacity is produced using the gas-phase quenching process. The waste gas treatment systems used by most manufacturers of melamine produced by the vapor-quenching method are outdated, have simple equipment, cause significant pollution, consume high amounts of energy, and result in low added value for the products. According to industry experts, the successful industrialization of this new patented energy-saving ammonia-carbon separation technology will have a profound impact on the layout of melamine manufacturers in China as well as on the healthy development of the industry.