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Review Meeting for the Process Package of Jinhua Furnace at Zhejiang Jinju Chemical Industry Held / Author/Source: Compiled by Beijing Qingchuang Jinhua Nitrogen Fertilizer and Methanol Technology Network. Date: April 29, 2019. Clicks: 37. On April 24-25, 2019, a review meeting for the process package related to the synthetic ammonia production route and energy-saving and emission-reduction technology upgrades at Zhejiang Jinju Chemical Industry Co., Ltd. was held at Donghua Engineering Technology Co., Ltd. Representatives from Zhejiang Jinju Chemical Co., Ltd., Donghua Engineering Technology Co., Ltd., and Beijing Qingchuang Jinhua Technology Co., Ltd. attended the meeting. The three parties conducted a thorough and careful review and discussion of the process package design, had in-depth exchanges regarding potential safety issues associated with the project, and reached a consensus on the key time milestones. The holding of this process package review meeting has created favorable conditions for the progress of work in the next phase, accelerated the project implementation timeline, and laid an important foundation for the subsequent stage of conceptual design and construction. The synthetic ammonia feedstock route and energy-saving and emission-reduction technology upgrade project of Zhejiang Jinju Chemical uses a 6.5MPaG water-cooled wall direct-connected waste boiler gasifier (Jinhua Furnace 3.0) to replace the existing batch fixed-bed gasifiers and low-pressure refractory brick quenched gasifiers; the gasification unit is designed as a dual-unit setup with one as a backup, and commissioning is scheduled for 2021. The Jinhua furnace was developed under the leadership of the Shanxi Clean Energy Research Institute at Tsinghua University, in collaboration with Beijing Qingchuang Jinhua Technology Co., Ltd., Yangmei Fengxi Fertilizer (Group) Co., Ltd., and Shanxi Yangmei Chemical Machinery (Group) Co., Ltd. It represents a new gasification technology that possesses independent intellectual property rights. The upper combustion chamber of the Jinhua furnace (coal slurry + membrane water wall + radiant waste boiler + quenching) adopts a vertically suspended membrane water wall structure, which is well-established in the field of thermal engineering. By utilizing the principle of slag protection, the gasification temperature can be increased to 1700°C, thereby completely overcoming the limitation imposed by the ash melting point of different coal types in conventional refractory brick gasification furnaces; as a result, this furnace can handle a wide range of coal types. The hydraulic circulation of the water wall adopts an intrinsically safe natural circulation design with forced circulation, enabling energy-efficient operation with low resistance and ensuring the safety of the water wall in the event of a power failure to the circulation pump, thereby **improving the operational reliability of the water wall**. A radiant waste boiler is installed at the lower part of the combustion chamber; its unique, efficient heat-transfer radiant heating surface structure is used to recover the sensible heat from the crude syngas, effectively preventing problems such as slag formation and ash accumulation. This allows the gasifier to produce high-quality steam alongside syngas, resulting in a syngas/steam co-production unit that improves energy utilization efficiency.