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Another key unit in the hydrogen production facility of Shaanxi’s 500,000-ton/year coal tar deep processing project has been successfully tested. Author/Source: Coal Tar Deep Processing and Hydrogenation Technology Collaboration Group. Date: June 4, 2020. Clicks: 7. On June 3, good news came again from the hydrogen production facility of Shaanxi Jingyi Chemical’s 500,000-ton/year coal tar deep processing and multi-product integrated utilization project: the turbine of the propylene refrigeration unit was tested successfully in just one attempt, laying the foundation for subsequent joint tests of the turbine and compressors. Before the turbine is tested, technical personnel from all relevant parties conduct a joint verification; during this process, the dynamic tests of the oil system, the static tests of the turbine, the turbine shutdown tests, as well as the interlock tests of various related auxiliary systems, all proceed successfully, confirming that the turbine is ready for testing. During the commissioning process, the turbine went through steps such as low-speed warming-up and medium-speed warming-up; all operational parameters remained normal throughout. The electronic speed trip test and the mechanical speed trip test were carried out successively, allowing the commissioning to be completed successfully. Shaanxi Jingyi Chemical’s 500,000 tons per year project for the deep processing and integrated utilization of coal tar involves the use of advanced technologies with independent intellectual property rights, developed specifically for the characteristics of coal tar. The core technology consists of a combination of boiling-bed hydrogenation for quality improvement of coal tar across all fractions, along with fixed-bed hydrocracking; using medium- and low-temperature coal tar as raw material, this process primarily produces high-value aromatic chemical products. The project covers an area of about 1,200 mu, with an estimated investment of around 4.6 billion yuan. Construction of the project officially began in August 2017, and it is now in the final stages of design, civil works and safety preparations, as well as equipment installation. Completion and commissioning are expected by the end of October 2019. The projects mainly include: 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, a 100,000-ton/year methanol synthesis unit, as well as related supporting facilities such as hydrogen purification (PSA) units, sulfur recovery units, phenol-amine recovery units, storage and transportation systems, and other auxiliary and environmental protection systems.