Thread Content
Progress on the construction of the pyrolysis phase of the Shaanxi Coal Yulin Chemical’s demonstration project for clean and efficient conversion of coal based on different quality levels. Author/Source: Huahua Net Coal Chemicals. Date: April 19, 2022. Clicks: 17. On April 13, the 35kV transformer in Area 11 of the company’s demonstration project, which aims at converting 15 million tons of coal per year into products through clean and efficient methods, was successfully connected to the power supply and put into operation. At 13:30 on April 13, the 1# 35kV main transformer was successfully powered on ； At 18:30, the 2# 35kV main transformer was successfully powered up, and all the busbars in the 10kV medium-voltage cabinets were also supplied with power. This marked the successful initial power-up of the 35kV transformer in Area 11 of Yulin Chemical Company’s 15 million tons per year demonstration project for the clean and efficient conversion of coal into various products; it is now in operation, laying a solid foundation for the subsequent commissioning of various systems. Area 11 of this company now has dual power supply inputs, coming from feeders 3527 and 3528 in the 35kV substation of the 110kV main power station; the main equipment includes 2 units of 35kV oil-immersed transformers and 30 units of medium-voltage switchgear. The successful power supply to Area 11 is a crucial step in the entire pyrolysis startup project. At present, the company’s substation complex includes 3 10kV substations and 4 0.4kV substations, which are responsible for the power transmission and distribution tasks related to this pyrolysis startup project. The successful power supply to the substation in area 11# not only provides a solid guarantee for the power supply to the equipment in subsequent substations, but also indicates that the pyrolysis startup project is about to enter the trial production phase, offering strong support for the official commissioning of this project in the next stage. The 15 million tons per year demonstration project for the clean and efficient conversion of coal into various products, operated by Shaanxi Coal Group Yulin Chemical Co., Ltd., is located in the Qingshui Coal Chemistry Industrial Park within the Yulin Yushen Industrial Park. The investment in this project amounts to 26.2 billion yuan, and it will be constructed in two phases and four stages. Phase 1 of the project is divided into two stages: Stage 1 involves the construction of an ethylene glycol plant with an annual production capacity of 1.8 million tons. The site area for this phase is approximately 4.4 million square meters, and the total investment required is around 26.5 billion yuan. It is currently the largest coal-based ethylene glycol production facility under construction in the world. In the second phase, projects for the production of 5.6 million tons per year of methanol, 2 million tons per year of olefins, and related deep-processing facilities will be constructed. Phase II of the project focuses on coal pyrolysis and is also divided into two stages. The first stage involves an industrial demonstration facility for the pyrolysis of 1.2 million tons per year of pulverized coal and the deep processing of 500,000 tons per year of coal tar. In the second stage, the scale of pyrolysis is increased to 15 million tons, and the coal tar industry chain is expanded to produce downstream products derived from aromatics and arylenes. The pyrolysis phase of the 15 million tons per year demonstration project for the clean and efficient conversion of coal into different products at Yulin Chemical, belonging to Shaanxi Coal Group, is under the general contracting management of Shengbang Technology Co., Ltd. The contract value is close to 2.7 billion yuan. The project includes a coal pyrolysis unit with a capacity of 1.2 million tons per year (based on thousand tons of raw coal processed), a catalyst production unit with a capacity of 35,000 tons per year, a suspended-bed hydrogenation unit with a capacity of 500,000 tons per year, as well as a combined hydrogenation unit for hydrogen supply solvents and light oil (including 270,000 tons per year of hydrogen supply solvents and 400,000 tons per year of units for hydrogenation and quality improvement). There are also gas desulfurization units, a process wastewater treatment unit with a capacity of 420,000 tons per year, as well as coal pyrolysis tanks and related facilities. This project is constructed simultaneously with Yulin Chemical’s 1.8 million tons per year ethylene glycol plant, and it utilizes Shengbang Technology’s own patented pyrolysis technology.