【Ten Years of Rapid Development in Chemical Processing Equipment】The World’s Largest Single-Unit Area Semi-Hydrated Phosphoric Acid Rotary Vacuum Filter from 1967 to 2020
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Ten years of rapid development in chemical technology; praise for the prosperous and strong China. This is just a starting point to encourage more people to participate and bring more vitality to the discussions. 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 September 2, 2020, the world’s largest semi-water/di-water wet phosphoric acid production facility, the Yidu Xingfa 380,000-ton/year wet phosphoric acid plant, which was constructed under the general contract of China Wuhuan Engineering Co., Ltd., successfully started production, yielding qualified phosphoric acid products. To date, all equipment in the facility is operating stably, with all process parameters remaining within normal ranges. The key equipment for this project – including the world’s largest single-unit semi-hydrate phosphoric acid rotary vacuum filter with a surface area of 160 m2, the 140 m2 dihydrate rotary vacuum filter, as well as the stirring devices for the dissolution tank, crystallization tank, and conversion tank, as well as the thickening machines for the concentrated phosphoric acid tank – were all designed and manufactured by Jiangsu Xinhongda Group Co., Ltd. “The “semi-hydrate-dihydrate wet phosphoric acid production process” technology represents the most advanced, large-scale, environmentally friendly, and integrated production system in the wet phosphoric acid industry. It has been designated by the Ministry of Industry and Information Technology as well as the National Development and Reform Commission as a green technology to facilitate the transformation and upgrading of traditional industries. In the evaluation of scientific and technological achievements organized by the China Petroleum and Chemical Industry Federation in 2020, this technology was rated as being at an internationally advanced level. The successful first feeding of the Yidu Xingfa phosphate project marks a significant step forward in the dissemination of this technology. The further promotion and application of this technology will play a positive role in the sustainable development of **scarce phosphate mineral resources, as well as in reducing energy consumption across the industry. Xin Hongda and Wuhuan are jointly applying for the **Science and Technology Progress Award** for this project.
In 2001, Xinhongda participated in the equipment bidding for the 300,000-ton phosphate production project at Yuntianhua International Chemical’s Furi branch; two 160m2 rotary vacuum filters were required for this project. At that time, only UCEGO in France and Xinhongda were capable of producing rotary vacuum filters. The delivery time for UCEGO’s products was 12 months, and their price was nearly 100 million yuan, which represented a heavy burden for the project. Xinhongda, on the other hand, could deliver the products in 6 months at a cost of 10 million yuan. Previously, Xinhongda had only built units of 140 m2; it had never built any units of 160 m2. This represents a huge opportunity as well as a challenge for Xinhongda, which is a private enterprise. Subsequently, Chen Aimin, the chairman of Xin Hongda, and Zhang Xuancheng, the chief engineer, presented a detailed report to the then****** in charge, and it was ultimately decided that Xin Hongda would take on the task. The development of large-scale turntable vacuum filters has broken through the bottleneck in the scaling up of domestic phosphate production systems, making a significant contribution to the localization of large-scale equipment in China’s phosphate fertilizer industry.