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In order to meet the needs of domestic and international nitric acid market development, in recent years, as a national high-tech enterprise, Xi'an Shaanxi Drum Power Co., Ltd. has continuously strengthened the research on the nitric acid plant process flow, continued the technical improvement of nitric acid units, and gradually mastered the double pressurization. Production technology, has successfully developed 30,000 tons, 50,000 tons, 80,000 tons, 100,000 tons, 150,000 tons, 180,000 tons, 270,000 tons and 360,000 tons of nitric acid "four-in-one unit." In particular, Ningbo Yantai Wanhua's 270,000-ton/year dual-pressure nitric acid plant was successfully fed once on August 22, 2010. After full-load operation, the output reached 900 tons/day or more, and the finished acid concentration reached 63%. The absorption tower The concentration of exhaust gas at the outlet is less than 115ppm. After the CRI exhaust gas reacts, the concentration of exhaust gas in the exhaust gas cylinder is 0, and yellow smoke is not seen in the discharge. The steam produced by the device can be used for more than self-use. This indicates that the new generation of nitric acid generators in Shaanxi Drum has reached the international advanced level of similar units.
On the 10th of the month, the ordering contract for the 360,000 tons/year nitric acid “four-in-one†unit signed by Shaanxi Drum Power Co., Ltd. and Sichuan Golden Elephant Group was the 50th. Shaanxi Drum Power is currently the only company that can produce nitric acid "four-in-one units." At present, Shaanxi Drum has independent intellectual property rights of the "four-in-one" unit, which consists of axial compressors, nitrogen oxide compressors, exhaust turbines, and steam turbines.
In order to adapt to the trend of large-scale development of nitric acid plants, Shaanxi Drum has already begun to conduct research and development for larger-scale nitric acid “four-in-one†units. It is believed that the third-generation and fourth-generation nitric acid “four-in-one unit†of Shaanxi Drum Power will have higher efficiency, more reasonable matching, and more stable operation, and can fully meet the new requirements for nitric acid production process, and the market share will increase year by year. . At present, Shaanxi Drum Power has also achieved a major transformation in the nitric acid industry from unit sales to process installations.
Practice has proved that the fully domestically produced “four-in-one unit†developed by Shaanxi Drum has the characteristics of high technical content, large total volume, large stand-alone scale, low energy consumption, and excellent comprehensive economic indicators, regardless of capacity, heat utilization, and exhaust emissions. Still, there are major breakthroughs in operating pressure, acid concentration, etc., which have solved the bottleneck of domestic nitric acid development and laid a foundation for the elimination of backward production capacity and new nitric acid equipment in the nitric acid industry in China, and have become the main force and future development of the nitric acid industry in China. The direction.
The first set of 360,000 tons/year nitric acid "four-in-one unit" contract signed by Shaanxi Drum Power
On January 10, Xi'an Shaanxi Drum Power Co., Ltd. and Sichuan Golden Elephant Group and Guizhou Kaisuo Group signed the first domestic purchase and sale contract for 360,000 tons/year and 270,000 tons/year nitric acid “four-in-one unitsâ€. The signing of the first domestic 360,000-ton/year crew contract broke the long-term monopoly position of foreign multinationals on large-scale nitric acid units, which marked the arrival of the large-scale domestic nitric acid unit in China and will further promote the large-scale development of China's nitric acid industry. development of.