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2.47 billion yuan invested: Zhejiang’s new 50,000 Nm3/h coal-based hydrogen production project reaches a key milestone. Author/Source: Gasification World. Date: August 11, 2021. Clicks: 24. On August 9, the first steel structural column of the gasification unit in the Baling Hengyi hydrogen production upgrade and by-product ammonia production improvement project, constructed by Sinochem Second Construction Southwest Branch, was successfully lifted into place, marking the transition of the project from the civil construction phase to the installation phase. The lifting of the steel structure for the gasification unit is a key milestone in the project. The gasification unit is the main equipment of this project; the base elevation is -4.6 meters, the height of the main frame is 88 meters, there are 18 steel structure columns weighing 7.1 tons each, and the installation height is 37.9 meters. Project Overview: The construction of the 400,000 tons per year caprolactam expansion project at Zhejiang Baling Hengyi is located in the Linjiang Industrial Park, Xiaoshan District, Hangzhou City, Zhejiang Province. Building on the existing 400,000 tons per year caprolactam production facility, this project aims to utilize advanced coal chemical technologies to establish a new hydrogen production unit with a capacity of 50,000 Nm3/h. At the same time, a 300,000 tons per year ammonia synthesis plant and an associated air separation unit with a capacity of 60,000 Nm3/h will also be built. Total investment: 2,478.85 million yuan. The project is constructed in two phases. The first phase utilizes the existing benzene hydrogenation process using the cyclohexane method, the ammonia oximation process, two-stage rearrangement, and multi-stage purification processes. By adding some key production equipment to the existing facilities for oximes, caprolactam, coal-based hydrogen, etc., the technical upgrade to increase caprolactam production capacity to 300,000 tons per year is carried out ； The second phase of the project utilizes a new benzene hydrogenation process based on cyclohexene, as well as Sinopec’s latest gas-phase rearrangement technology. New production lines for cyclohexene-based processes, ammonia oximation processes, and gas-phase rearrangement for caprolactam are established, along with additional auxiliary facilities to support these operations, thereby enabling an expansion of caprolactam production capacity to 400,000 tons per year.