After four years of operation, this world’s largest single-project facility has finally been completed and put into use! ! !
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On July 28, the world’s largest coal indirect liquefaction project by scale – the **Energy Group Ningxia Coal Industry’s 4 million tons per year coal indirect liquefaction demonstration project – passed the completion inspection. It is reported that the completion acceptance committee was composed of 39 experts invited by **Energy Group. Through listening to reports, reviewing documents, and conducting on-site inspections, the expert group unanimously agreed that this project plays a vital role in ensuring **Energy Group’s strategic security, and serves as a model for modern coal chemical industry practices. Ningxia Coal Industry’s 4 million tons per year coal indirect liquefaction demonstration project is a key project under the 12th Five-Year Plan. Since its commissioning, 4 rounds of 603 key technical upgrades have been carried out to overcome various bottlenecks. As of July 25, the plant has been operating safely and stably for 798 days, achieving near-zero wastewater discharge and ultra-low emissions from boiler flue gas. The coal consumption per ton of oil product is 2.77 tons of standard coal, while water consumption is 5.72 tons – both figures are better than the advanced industry standards. The 4 million tons per year coal indirect liquefaction demonstration project of Ningxia Coal Industry has overcome the key technologies for large-scale gasification and FTO synthesis, as well as the manufacturing technologies for major equipment and special materials, along with the technologies for scale-up and system integration. \"Made in China\" has been achieved for core equipment and key materials, and 37 localization tasks have been successfully completed. Based on the classification by process technology and the number of equipment sets, the localization rate of this project reaches 98.5%, and the overall technical level of the project is at the international leading level. It is reported that through successful domestic demonstration of this project, a complete set of large-scale process technologies for coal-to-oil conversion has been developed. These technologies have helped overcome the challenges related to engineering implementation, large-scale equipment manufacturing, and the integration of complete sets of equipment. They have also broken the foreign monopoly on the core technologies, equipment, and materials used in coal-to-oil chemical processing, thereby enhancing China’s ability to ensure its own energy supply. Additionally, a development model for the deep processing of coal that features high levels of technological content, high added value, and a long industrial chain has been established, providing a technical strategic reserve to help the country adapt to the post-petroleum era and seize a competitive advantage in terms of technology. Since its commissioning, the project has enabled the annual clean and efficient use of 19.61 million tons of coal, facilitating a shift from coal being used solely as a fuel to it being utilized both as a fuel and as a raw material. It represents an important approach for the energy technology revolution as well as for the clean and efficient use of coal ； A total of 17.21 million tons of oil-based products have been produced, serving as a valuable supplement to energy supply ； Projects such as C12, C14, light white oil, and α-olefin separation were completed and put into operation, resulting in the introduction of 15 new products across 7 categories, thereby achieving a shift from producing a single type of oil product to offering a variety of products.
The 4 million tons per year coal indirect liquefaction demonstration project of Ningxia Coal Industry Company utilizes Ningxia Coal gasification technology and the UST slurry-bed F-T synthesis technology, etc., to produce 2.733 million tons of diesel, 983,000 tons of naphtha, 333,000 tons of liquefied petroleum gas, 1 million tons of methanol, 202,000 tons of sulfur, and 85,000 tons of mixed alcohols per year. There are two production lines, A and B. Line A was put into trial operation in October 2016, while Line B was put into trial operation in October 2017. The project commenced construction on September 28, 2013, at the Ningdong Energy and Chemical Industry Base; it is the largest chemical project in the world’s petrochemical and coal-to-oil chemical industries in terms of initial investment ； On December 28, 2016, Project Line A was completed and put into operation, producing qualified oil products. This marked **Energy Group’s achievement of industrial application in indirect liquefaction of coal into oil on a million-ton scale, following its success in direct liquefaction of coal into oil on a similar scale; as a result, China became one of the few countries in the world that possesses both direct and indirect large-scale coal-to-oil production technologies** ； By the end of 2017, both lines of the 4 million tons per year coal indirect liquefaction technology innovation, development, and industrialization project were put into operation ； In 2018, the project entered commercial operation ； In 2019, the overall load reached 90%, and the compliance rate of process parameters was over 99% ； In 2020, the first comprehensive overhaul of the facility since its completion was carried out, eliminating a series of bottlenecks that affected its operation; as a result, both production lines were able to operate at full capacity from the start, with daily and monthly production volumes continuously setting new records ； In 2021, the daily production of oil and chemical products reached a maximum of 12,100 tons, while the monthly production peaked at 372,000 tons. Over the past 5 years, **Ningmei Company of the Energy Group has carried out 4 rounds of 559 key technical upgrades, continuously overcoming and resolving those major core technologies that pose challenges to safe, stable, and clean operation ； More than 5,000 improvements were made to the key paths and stages of gasification, addressing various issues such as unreasonable process design, cumbersome interlock controls, and high ash content in raw gas ； A total of 7 billion yuan has been invested in environmental protection measures for this project, effectively addressing the issues related to air emissions, wastewater discharge, and solid waste management. The development and application of integrated technologies for large-scale indirect coal liquefaction systems and their clean operation have ensured the safe, stable, and clean functioning of such facilities. The overall technology involved in this project is at the international leading level; it was awarded the First Prize for Scientific and Technological Progress for the year 2020.
The general contractor and the construction unit can now receive the final payment for the project
Key technologies for large-scale gasification and FTO synthesis, manufacturing technologies for major equipment and special materials, as well as engineering scale-up and system integration technologies have been mastered. \"Made in China\" has been achieved for core equipment and key materials, and 37 localization tasks have been successfully completed. Based on the classification by process technology and the number of equipment sets, the localization rate of this project reaches 98.5%, and the overall technical level of the project is at the international leading level.
On November 18, 2019, Ningxia Coal Industry Company held a meeting in Ningdong, Ningxia, to conduct the environmental protection acceptance inspection for wastewater, exhaust gas, and noise related to the 4 million tons per year coal indirect liquefaction demonstration project as well as the comprehensive utilization project of coal slime. The total estimated investment for Ningxia Coal Group’s 4 million tons per year coal-to-oil project is 593,1062 million yuan. Construction of the project commenced in full in September 2013, with two production lines, A and B. Line A was put into trial operation in October 2016, and Line B was put into trial operation in October 2017. The 4 million tons per year coal-to-oil project of Ningxia Coal uses gasification of Ningxia Coal, a pre-stage waste boiler plus two-stage sulfur-resistant shift reaction with low water vapor ratios, purification via Luqi low-temperature methanol washing, Fertig synthesis and product processing employing the USTBM slurry-bed F-T synthesis technology, hydrogenation refining and cracking technologies; for hydrogen production from exhaust gas treatment, Chengdu Saipuixing membrane separation technology is used, while Shanghai Huajia International’s hydrocarbon conversion technology and Sichuan Tianyi’s PSA technology are employed; sulfur recovery is achieved through Shandong Sanwei’s high-temperature thermal reaction and two-stage catalytic Claus process, along with ammonia-based desulfurization technology. The annual production capacity is 2.733 million tons of diesel, 983,000 tons of naphtha, 333,000 tons of liquefied petroleum gas, 1 million tons of methanol, 202,000 tons of sulfur, and 85,000 tons of mixed alcohols.
The sweat and efforts of so many people, over more than a decade in total
The technical staff who managed to persevere all became experts