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Successful Commissioning of Air Separation Unit at Hydrogen Production Center of Shaanxi Jingyi Chemical’s 500,000-ton Coal Tar Deep Processing Project / Author/Source: Yueneng News, Date: 2019-11-29, Views: 124. At 13:45 on November 27, good news came from the hydrogen production center of Shaanxi Jingyi Chemical Co., Ltd.: the single-unit testing of the air separation unit was successful from the first attempt, marking a significant achievement in the commissioning process and creating favorable conditions for the subsequent production of high-quality oxygen and nitrogen products. The successful individual testing of the air separation turbine at the Lean Chemical Hydrogen Production Center has set a good start for the testing activities in this hydrogen production facility; it has also boosted the company’s determination and confidence in the overall project development and equipment testing processes. It is reported that the coal tar deep processing and multi-product integrated utilization project of Shaanxi Jingyi Chemical Co., Ltd. is currently the first large-scale coal-based aromatic hydrocarbon production line in China. It achieves comprehensive and systematic utilization of coal based on its different quality levels, representing a new industrial approach to the conversion and utilization of coal. The total investment in the project is 4.6 billion yuan. The project mainly includes a 550,000-ton/year coal tar pretreatment unit, a 500,000-ton/year coal tar fluidized-bed hydrocracking unit, a 450,000-ton/year coal tar fixed-bed hydrocracking unit, a 400,000-ton/year naphtha continuous reforming unit, a 170,000-ton/year aromatic extraction unit, a 50,000 cubic meters per hour coal-to-hydrogen unit, a 50,000 cubic meters per hour air separation unit, and a 100,000-ton/year methanol synthesis unit. It also includes related supporting facilities such as hydrogen purification (PSA) units, sulfur recovery units, phenol-amine recovery units, storage and transportation systems, as well as other auxiliary and environmental protection systems.