Jinhua Furnace 3.0 (the first set of water-cooled wall directly connected to a radiant waste boiler using water-coal slurry) passed the 72-hour on-site test

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Jinhua Furnace 3.0 (the first gasification furnace with a water-cooled wall directly connected to a radiant waste boiler for coal slurry use) passed a 72-hour on-site test. Author/Source: Date: 11-17-2017; Clicks: 83. From November 11 to 14, 2017, the China Petroleum and Chemical Industry Federation organized experts to conduct a 72-hour on-site test of the “syngas/steam co-generation coal slurry water-cooled wall gasification furnace” (i.e., the gasification furnace with a water-cooled wall directly connected to a radiant waste boiler, Jinhua Furnace 3.0). All technical specifications met or exceeded those specified in the design, and the testing panel unanimously agreed that the furnace had passed this continuous 72-hour on-site test. This technology was jointly developed by four organizations: the Shanxi Clean Energy Research Institute of Tsinghua University, Beijing Qingchuang Jinhua Technology Co., Ltd., Shanxi Yangmei Chemical Machinery (Group) Co., Ltd., and Yangmei Fengxi Fertilizer (Group) Co., Ltd. The installation began to be designed and constructed in June 2015; it successfully started operating with the first batch of materials fed into it on April 1, 2016, and has since been running steadily. The assessment expert group listened to the report presented by Yangmei Fengxi Linyi Company regarding the construction and operation of the facility, as well as the preparations made prior to the assessment ； Report by the Shanxi Research Institute of Tsinghua University on gasification technology and research and development efforts. During the assessment period, the expert team conducted a detailed inspection of the on-site operations in various processes such as the coal yard, coal grinding and slurry preparation, coal gasification, purification of crude syngas, and slag treatment. They also carried out continuous monitoring of areas such as the control room, analysis room, and sites for sample collection. During the on-site testing period, the unit operated continuously and stably for 72 hours, with an average load factor of 104.9%. The content of useful gases (CO+H2) was 80.7%, the specific oxygen consumption was 374.4 Nm3/1000 Nm3 (CO+H2), and the specific coal consumption was 581.2 kg/1000 Nm3 (CO+H2). The steam generated as a by-product from the waste heat boiler was 29,152 kg/h. The cold gas efficiency of the gasifier is 73.4%, while the thermal efficiency reaches 98.2%. Based on the on-site operation conditions and data analysis, the evaluation expert group unanimously agreed that the coal type used in this evaluation is basically consistent with the designed coal type ； The device operated continuously and stably for 72 hours, with all parameters remaining stable; the performance data met the specified requirements ； The operational data and calculation results are accurate and reliable; the technical parameters and design specifications for the stable operation of the device meet or exceed the designated values ； The device features a high level of automation, is safe and reliable, and has excellent operational performance ； It utilizes patented technologies with independent intellectual property rights, resulting in a high degree of domestic equipment utilization. The water wall and radiant waste boiler design of the Jinhua Furnace 3.0 fully incorporates established water wall technologies from the boiler industry; its key structural features include a vertically suspended membrane wall structure for the water wall in the gasification chamber, which has been optimized for performance ； Heat recovery utilizes a vertical-tube structured radiant waste boiler, while the water system is designed for intrinsically safe natural circulation ； The process burner features a specially designed ignition and operation combined burner, with integration of the ignition and feeding procedures ； Remove the quench ring to simplify the quenching process. Based on the results of on-site evaluations and the technical characteristics of this system, the on-site expert panel determined that it is the first gasification plant in both domestic and international contexts to feature a water-cooled wall directly connected to a radiant waste boiler. The high-quality steam generated by this radiant waste boiler can be used for process and power purposes, resulting in a significant reduction in the amount of ash-water circulation. It exhibits excellent performance in terms of energy savings, consumption reduction, and environmental protection. It is hoped that the relevant departments will provide support in terms of promotion, application, and large-scale development. Sun Zhengtai, head of the assessment team, former vice president of China Tianchen Engineering Company, and a professor-level senior engineer, said on behalf of the team that this project is the first major scientific and technological innovation project in the field of modern coal chemical gasification technology to pass the on-site assessment since the Party’s * era in the petroleum and chemical industry. He pointed out that multiple feed inputs per furnace and combined production are engineering goals that colleagues in China’s coal chemical industry have been striving to achieve for many years. This project has achieved its goals and been carried out successfully; it is an amazing achievement! This furnace can not only supply chemical synthesis gas but also high-pressure, high-quality steam for process and power applications. Designed for four applications per furnace, enabling integrated use in the chemical, power, gas, and heating industries ； To achieve integrated and intensive development of multiple industries based on IGCC coal technology for clean coal combustion ； It also offers a Chinese solution for the clean, green, ecological, and efficient development of coal on a global scale.