On December 23, 2022, Foshan Xianhu Laboratory held a press conference on the major achievements of hydrogen-ammonia fusion zero-carbon combustion technology. It was announced that the "Joint Innovation and Research Center for Advanced Zero carbon Combustion Technology" successfully developed the world's first green tile fired with zero carbon ammonia fuel on December 18, 2022 in Foshan, Guangdong Province. it marks a historic step towards the goal of carbon neutralization in China's building ceramic industry.
The Joint Innovation and Research and Development Center of Advanced Zero carbon Combustion Technology was jointly established by Foshan Xianhu Laboratory, Foshan Oushennuo Ceramics Co., Ltd. and Foshan Delitai Technology Co., Ltd. on December 27, 2021. Cheng Yibing, a strategic scientist at Foshan Xianhu Laboratory, is the director of the center. The center aims at the subversive key technologies of zero-carbon combustion in ceramic kilns, aims to explore a new direction for China's ceramic industry to achieve "double carbon" standards, and aims to promote "advanced zero-carbon combustion technology" to other high-temperature manufacturing industries.
The R & D team is engaged in the research and development of burners and combustion simulation calculation, the research and development of laser sensing technology for complex and harsh environment, and the development of pollutant gas sensors. High-temperature industrial kiln test measurement and other aspects of in-depth research on the basis and application of clean combustion of zero carbon ammonia fuel. The low pollution pure ammonia combustion technology based on staged combustion, the high flux incoming flow stable ignition and stable combustion technology, and the key debugging and operation technology of the core equipment of the pilot furnace system are developed, which realizes the stable ignition and combustion of pure ammonia of the high power burner, the low pollutant (NOx, NH3) emission and the stable operation of the pilot kiln. The ammonia leakage detection technology based on the integration of optical fiber sensing and modulation spectrum technology and the trace ammonia escape detection technology in high temperature, high humidity and complex environment are developed to realize the safety monitoring of ammonia fuel pipeline transportation and combustion process. Zhou Jiwei, a doctoral student in the team, is responsible for the burner design and testing, as well as the kiln test during the whole process of the project. Wang Wei, a master's degree student, is responsible for the development and field application of trace ammonia sensors.
After nearly a year of technical research, the "Joint Research and Development Center" successfully designed and developed a new type of pure ammonia and natural gas mixed ammonia industrial burner and supporting technology, and achieved stable ignition, ammonia mixing and stable combustion of pure ammonia in Delitai's industrial experimental furnace. and effectively control nitrogen oxide emissions within the national standards. While developing zero-carbon combustion technology, the team also established a set of safe use system and emergency management measures for ammonia fuel ceramic kiln, including operating rules, ammonia storage, transportation and other key links. On this basis, the team successfully completed the transformation of a 30-meter-long roller kiln in Oushennuo Ceramics Company, which is fueled by natural gas into pure ammonia and natural gas mixed ammonia. At the same time, the team developed a liquid ammonia gasification and supply accurate control system suitable for pure ammonia combustion, an on-line monitoring system for residual ammonia in flue gas, and developed a complete set of technologies and equipment such as high-efficiency liquid ammonia SCR denitrification system in conjunction with Guangdong Anqing Technology Co., Ltd.
On December 18, 2022, the project "ammonia Combustion (Zero carbon fuel) Technology of Building Ceramic Industry Kiln" was formally tested in Foshan Oushennuo Ceramic Co., Ltd. After the pilot-scale kiln modified by the project uses 100% ammonia fuel, the furnace is ignited in a cold state, and the firing system such as temperature / atmosphere / pressure is regulated on the spot, the brick is officially fired into the kiln and successfully goes off the line of the world's first green tile fired with zero carbon ammonia fuel. The flue gas of pure ammonia combustion kiln is sampled and tested by a third party with relevant qualifications, and the flue gas pollutants (nitrogen oxides, sulfur dioxide and particles, etc.) are lower than the national standard limits. Offline 750x750mm specification glazed tile, blank section without black center, chromatic aberration and other phenomena, normal pattern color, water absorption of 0.01%, strength 41.6MPa, are higher than the national standard requirements of ceramic tiles.
At present, the Advanced Combustion Laboratory of Wuhan University of Technology is working closely with the Joint Innovation and R & D Center of Advanced Zero-carbon Combustion Technology, and is actively discussing cooperation on "Zero-carbon Combustion Technology" with a number of leading enterprises in the ceramic and metal processing industries. The further promotion of this technology will have a significant social effect and make a significant contribution to the realization of the "double carbon" standard for Guangdong and the national high temperature manufacturing industry.