The hottest sulfuric acid production plant turns i

Sulfuric acid production units become green energy plants

after more than ten years of development and practice, the low-temperature waste heat recovery technology of sulfuric acid units in China has now met the conditions for promotion and application in the sulfuric acid industry. The independent technology has completed a major leap in industrialization, forcing the transfer fee of similar foreign technologies to be significantly reduced. At the sulfuric acid technology exchange conference held in Yangzhou from May 16 to 17, industry experts expected that with the further promotion of energy conservation and emission reduction, the technology was expected to be widely promoted and applied in the sulfuric acid industry within three years

Wu Xuemei, Secretary General of China sulfuric acid industry association, told that according to incomplete statistics, China's sulfur based acid enterprises currently have 16 units with a scale of about 11.5 million tons equipped with low-temperature waste heat recovery system and put into production; There are devices with a capacity of about 10million tons in 18 enterprises. 10. The number of tests can be programmed and controlled, and the low-temperature waste heat recovery system will be configured; In the future, 10million tons of capacity can be configured with the system, and then the heat recovery rate of 80% capacity of sulfur based sulfuric acid will be increased to more than 90%

ye Jixuan, chairman of Shanghai aogeli Environmental Protection Engineering Co., Ltd., proposed that the sulfuric acid production plant should become a green energy plant, which can not only produce sulfuric acid products, but also produce a large amount of high, medium and low-temperature potential heat energy. With the tension of energy supply and the intensification of market competition, it is increasingly necessary to fully recover the low-temperature potential heat energy of sulfuric acid production units in combination with China's national conditions, improve the survival and development capacity of sulfuric acid enterprises, and let the sulfuric acid industry contribute to national energy conservation and emission reduction

Yu Xiangdong, a professor level senior engineer of Sinopec Nanjing Engineering Co., Ltd., introduced that since Nanjing Research Institute of chemical industry tackled the key problem of sulfuric acid low-temperature potential heat energy utilization technology in 2005, 15 sets of devices have been successfully promoted, and the operation effect is ideal. For example, Shandong Bofeng 250000 T/a sulfuric acid plant and Guiyang Sinochem kaiphosphate 800000 T/a sulfuric acid plant adopt the technology of Nanjing Institute of chemical technology. Since they were put into operation last year, they have operated smoothly, and the steam production rate per ton of acid is not less than 0.48 and 0.52 respectively, and all indicators have reached the world advanced level. The low-temperature waste heat recovery technology developed by ogli company can improve the temperature of circulating absorption acid to improve the grade of heat energy, so that it can produce low-pressure saturated steam. They integrate process design, material research and development, and equipment manufacturing, and have developed and implemented a variety of low-temperature waste heat recovery processes and technologies with different processes. Various technical processes have different advantages, which are applicable to new projects and old plant reconstruction respectively. Since the first set of low-temperature waste heat recovery device was not put into operation in 2007, the company has designed to ensure that the rubber and plastic products industry in China has increased by 8.0% year-on-year. There is more than 70cm space around the testing machine for experiment and normal protection. More than ten sets of similar devices have been protected and put into operation, and good recovery effects and economic benefits have been achieved

Li Chonggui, a representative of large sulfuric acid production enterprises and assistant to the general manager of Yuntianhua International Chemical Co., Ltd., is also full of confidence in the promotion and application of these two domestic independent technologies. He believes that the investment can be recovered within two to three years, and energy conservation and emission reduction can be achieved at the same time

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