The first set of 2.6 million tons per year slurry-bed residue hydrocracking units will be safely handed over

At the beginning of September 2019, the safe lifting and precise placement of the first girder of the steel structure for Axis A of Reactor Frame in the 2.6 million tons per year slurry-bed residue hydrocracking unit project at Maoming Petrochemical, which was constructed by Sinopec’s Tenth Construction Company, marked the full commencement of the construction of the project’s steel structure. The A-axis length of the residue oil reaction frame is 33 meters, its width is 10 meters, and its height is 51.6 meters. It consists of six layers of steel structures, with a total of 193 steel columns, main beams, secondary beams, and diagonal braces, giving it a total weight of 454 tons. To ensure the standardization of the installation work and its quality, the project team held several special meetings to make arrangements, actively implementing the requirements related to improving quality and efficiency. Taking \"management innovation and enhanced work efficiency\" as key focuses, detailed construction plans were developed based on the characteristics and progress of each area. Special discussions were held regarding everything from the preparation and approval of plans and technical briefings to the prefabrication, placement, and installation on-site. Close coordination was maintained with the client, the engineering department kept track of the drawings, the supply department ensured that materials arrived on time, and safety training was provided for the construction teams – all of which laid a solid foundation for the on-site construction of the steel structure. During the construction process, faced with various challenges such as extreme weather conditions, limited construction space, simultaneous work underground and above ground, and complex construction procedures, the project team took proactive actions rather than waiting for assistance. They continuously improved the construction plans and safety protocols. The project leadership worked overtime to organize a \"30-day intensive effort\" campaign. During construction, the site supervisors were present throughout the process, making detailed arrangements for material allocation and personnel management to ensure that the entire construction process remained safe and under control ； Steel structures have large spans, and tasks such as lifting and bolt installation fall under high-altitude work; ensuring the safety of personnel and machinery is a key aspect of construction. During the installation of the steel structure, the project team opted for modern, scientifically designed buckled scaffold systems, which provide a work platform with greater flexibility and improved safety. This approach also enhances safety controls during the construction of the steel structure, increases the degree of modular prefabrication of the structure, reduces the risks associated with working at heights for the workers involved, and further ensures better construction quality. To date, 136.7 tons of steel structures for Frame A have been installed, representing a completion rate of 30.11%. Thanks to the project team’s scientific and systematic planning of the construction processes, the installation of the steel structures is progressing steadily in a safe, high-quality, and efficient manner. The content of this article is sourced from Sinopec News Network

ENI’s slurry-bed residue hydrocracking process using EST, with a molybdenum-based catalyst.

CNOOC has also developed slurry-bed residue hydrocracking technology in terms of catalysts, reactors, and processes.

It seems that this key equipment has not yet been manufactured domestically. [Guess about HaiChuan Equipment] It has three heads and six arms, allowing it to reach everywhere. https://bbs.hcbbs.com/thread-3032156-1-1.html (Source: HuahaiChuanliu – HaiChuan Chemical Forum)

Current status of heavy oil slurry bed hydrogenation technology applications at home and abroad. The main slurry bed processes available on the market are as follows: (1) ENI’s EST process from Italy; a plant with an annual capacity of 1.15 million tons was put into operation at the end of 2013. (2) The HDHPLUS-SHP process developed in collaboration by Venezuela’s Intevep and France’s Axens; (3) Chevron’s VRSH process; (4) The VCC process developed through a partnership between KBR and BP; (5) UOP’s Uniflex process; (6) Headwater’s (HCAT/HC3) process; (7) China’s heavy oil slurry bed hydrogenation technology

Currently, the EST process developed by Italy’s ENI company is the only mature process that has been successfully operated on a commercial scale. As shown in Figure 1, the process flow diagram of the EST technology, the main process conditions for this process are: reaction temperature of 400~425℃ ； Reaction pressure 16 MPa ； The volume space velocity is around 0.3 hr-1. The medium is characterized by high temperature and pressure; the solids present have high hardness, and their composition includes reactants and catalyst particles. The mass concentration can reach 50%, while the particle sizes can vary widely, ranging from 200–300 microns to 1–10 microns. The flow velocity is high, resulting in severe erosion. New requirements have been established for associated valves in terms of structural design, material selection, pressure resistance rating, sealing design, and manufacturing processes. Studying the design concepts of slurry valves holds long-term significance for the promotion of domestic production.