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Winner of the bid for the construction project of the gasification unit in Xiaoshan, Zhejiang / Source: Huahua Network – Coal Chemicals. Date: 2020-11-01. Clicks: 29. On October 26, the Southwest Branch of Sinochem Second Construction Group Co., Ltd. won the bid for the construction work related to the gasification unit (including slag water treatment) and the conversion unit for the hydrogen production improvement and by-product ammonia generation project at Zhejiang Baling Hengyi Caprolactam Co., Ltd.; the bid amount was 142.88 million yuan. The project is located in the Linjiang Industrial Park, Xiaoshan District, Hangzhou. Building on an existing production facility with a capacity of 500,000 tons per year for caprolactam, it is planned to use advanced coal chemical technologies to construct a new hydrogen production unit with a capacity of 50,000 Nm3/h. This unit will also generate 300,000 tons per year of synthetic ammonia, along with a supporting air separation unit capable of producing 60,000 Nm3/h of oxygen. From July 8th to July 9th, the design meeting for the hydrogen production upgrade and by-product ammonia generation improvement project of Zhejiang Baling Hengyi Caprolactam Co., Ltd. was held at Tianchen Company. The total investment for the capex project for caprolactam production is 2,478.85 million yuan. The construction will take place in two phases. In the first phase, the existing benzene hydrogenation process using cyclohexane, the ammonium oxime formation process, two-stage rearrangement, and multi-stage purification processes will be utilized. By adding some key production equipment to the existing facilities for oximes, caprolactam, and coal-based hydrogen production, the technical upgrades necessary to increase caprolactam production capacity to 300,000 tons per year will be carried out ； The second phase of the project utilizes a new cyclohexene-based benzene hydrogenation process as well as Sinopec’s latest gas-phase rearrangement technology. New production lines for the cyclohexene-based process, for ammonia oximation, and for gas-phase rearrangement to produce 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.