Another player enters the coal water slurry gasification field; Dongyu’s furnace achieves successful commissioning on the first attempt

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Another player enters the field of coal-water slurry gasification: The Dongyu furnace was successfully operated for the first time by Dongfang Electric. Yesterday, on May 25th, news came from the industrial gasification testing facility of Jiangxi Changyu Industrial Co., Ltd. The industrial testing unit based on the Dongyu furnace, developed through cooperation between China Dongfang Electric Corporation’s Central Research Institute and Jiangxi Changyu in terms of research, development, and production, was successfully operated for the first time, producing qualified crude gas; all key parameters such as carbon conversion rate met the design requirements. This marks a solid and crucial step forward for Dongyu Furnace in terms of its market-based promotion and application, as significant breakthroughs have been achieved in the new generation of cost-effective water-coal slurry gasification technology. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\wps869B.tmp.png To meet market demands and comply with **energy and environmental protection policies, and in light of the increasingly fierce competition in the domestic equipment manufacturing sector for use in the chemical industry, Dongfang Electric’s Central Research Institute, leveraging the group company’s strong capabilities in research, development, design, and manufacturing of energy-related technologies as well as its abundant research resources, began working in 2010 on the development of clean, efficient gasification technologies that can operate effectively with various types of coal, as well as other advanced gasification techniques. This work involved basic theoretical research, numerical simulations, pilot-scale tests, and industrial-scale trials. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\wps86DE.tmp.png Over the past 8 years, the Academia Sinica has conducted research on coal-water slurry gasification, high-pressure dense-phase pneumatic transport of coal powder, plasma high-temperature melting gasification, and chemical chain gasification technologies. It has established basic laboratories and industrial testing facilities for the clean and efficient utilization of carbon-based fuels, developed comprehensive techniques for researching clean fuel gasification technologies, completed various laboratory studies, and successfully created a series of key gasification technologies, core equipment, and clean fuel gasification systems. Additionally, it has established a set of coal quality criteria and corresponding evaluation procedures suitable for independent gasification processes, as well as a fairly complete theoretical framework and approaches for using coal in gasification. Over the course of 8 years, the Academia Sinica has built an excellent team in the field of low-carbon, clean, and efficient utilization of coal, one that combines technical research, technical services, and engineering development. Under the leadership of technical leaders Dr. Wang Xiaoliang and Dr. Wu Jiahua, the team has achieved a series of significant milestone results and outstanding performance; it has been granted over 50 patents, won two second-prize and one third-prize for scientific and technological progress in the group, and was recognized as an excellent team in Sichuan Province’s machinery, electronics, metallurgy, and coal industry in 2015. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\wps86DF.tmp.png A powerful partnership between Dongyu and East Power leads to the creation of a new product. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\wps86EF.tmp.png In 2016, based on years of research results, original patent technologies, as well as pilot and scale-up tests, East Power’s Central Research Institute joined forces with Jiangxi Changyu. By leveraging their strong capabilities in technology transfer, engineering experience, and extensive market development skills and resources in the coal chemical industry, they established a comprehensive industry-university-research partnership in the field of coal gasification, deciding to jointly develop industrially viable water-coal slurry gasification technologies and equipment. After two years of effort, the Dongyu furnace was successfully developed. According to Zheng Xiaolun, the head of Changyu Company, the Dongyu furnace focuses on cost efficiency as a key advantage; it enables the application of advanced coal-water slurry gasification technology to transform and upgrade traditional coal chemical industries. The investment required for its main system is about 20%~30% lower than that of mainstream coal-water slurry gasifiers on the market, thus addressing the three major challenges associated with transforming traditional coal chemical production processes: high investment costs, high performance requirements, and strict environmental standards. At present, China’s traditional industries such as coal chemical engineering, non-ferrous metals, metallurgy, petroleum, petrochemicals, light industry, and building materials have reached a critical stage of transformation and development. With increasingly strict environmental policies, enterprises are required to reduce production costs through technological upgrades in order to enhance their ability to withstand market risks. Dongyu Furnace will leverage its significant advantages in this process of transformation and development, thereby reducing a company’s investment and production costs, improving the environmental performance of the equipment, and significantly increasing the company’s profitability. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\wps86F0.tmp.png Wang Weimin, director of Dongfang Electric’s Central Research Institute, said that the successful development of the Dongyu furnace represents a crucial step forward for Dongfang Electric’s autonomous gasification technology, moving it from laboratory research to practical engineering applications and even industrial production. It is also a new attempt by the research institute to foster cooperation among industry, academia, and research institutions in order to find ways to put scientific achievements into commercial use. Zheng Xiaolun said that the Dongyu furnace is of great significance for gas production in industries such as coal chemistry, fine chemicals, oil refining, pharmaceuticals, papermaking, and non-ferrous metallurgy, as well as for the treatment of organic waste liquids that are difficult to handle; it opens up new paths for technological upgrades in gasification for small and medium-sized enterprises. To date, Dongyu Furnaces holds complete independent intellectual property rights, having obtained 27 patents for various innovations such as the furnace chamber structure of multi-stage gasifiers, a new type of slag discharge port structure for fluidized bed gasifiers, quenching rings used in fluidized bed gasifiers, quenching devices for spray-type gasifiers, and burner cooling water systems. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\wps8701.tmp.png Technology, economics, and environmental protection: more practical applications. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\wps8711.tmp.png It is said that this technical device has a wide range of compatibility with different types of coal ； Highly efficient, as it features optimally selected self-developed water wall systems, convection and radiation exhaust boilers that can also generate steam ； The high-humidity water gas produced does not require additional steam in the shift process, saving on steam costs ； The gasification operation pressure of Dongyu furnaces is relatively wide, and its process flow is simple, making it suitable for upgrading existing gasifiers in old factories. The factory only needs to modify the upstream process; the equipment from the downstream process can be reused, resulting in lower investment costs. Zheng Xiaolun told a reporter from China Chemical Industry News that the gasification chamber and quenching chamber of the Dongyu gasifier are designed as separate units, which significantly reduces the difficulties associated with the manufacturing, transportation, and installation of the gasifier. The entire gasification system is compact and well-designed, resulting in lower costs for civil works, steel structures, and related systems. It is also easier to operate, maintain, and repair ； The gasifier features a special furnace structure that enhances the \"three transfers and one reaction\" process of the materials undergoing gasification within the furnace. It delivers excellent gasification performance: a carbon conversion rate of ≥99%, a content of useful gases (CO+H2) of ≥81.5%, and a wide range of adjustability for the H2/CO ratio, making it highly suitable for the production of chemical products such as ammonia, methanol, and hydrogen. It has a coal consumption of 560–580 kg/kNm3 (CO+H2), and an oxygen consumption of 360–390 Nm3/kNm3 (CO+H2). The reaction temperature ranges from 1200°C to 1500°C. It features a high gasification rate, exceeding 5200 Nm3/m2•h (CO+H2 at 2.5 MPa). A single Dongyu furnace can replace multiple fixed-bed gasification furnaces, thereby saving space and reducing maintenance costs. Zheng Xiaolun said that Dongyu Lu develops burner and gasifier designs tailored to the requirements of different projects as well as the characteristics of coal gasification reactions, providing a scientific basis for design. This ensures the stable operation of the gasification units with excellent performance, while also reducing capital investment and operational maintenance costs ； Wastewater, free of tar, is easy to treat and can be reused; slag discharge causes no environmental pollution, and the slag and ash can be used as cement admixtures or materials for road construction. In terms of automated applications, the monitoring and control of this device are carried out using DCS, which helps to reduce labor costs ； At the same time, a self-developed DLS dispersant is used in combination with a new pulping process, which enables the effective use of wastewater to produce high-concentration water-coal slurry with excellent properties. In the gasifier, water-coal slurry reacts thoroughly at high temperatures, transforming harmful substances into useful materials. It is capable of handling 0.3–0.4 tons of wastewater per kNm3 of (CO+H2), thereby reducing the costs associated with wastewater treatment; over 300,000 yuan can be saved per 10,000 tons of wastewater per year, which **improves both the environmental performance and economic efficiency of enterprises**. Reposted to Dongfang Electric’s official account