【Ten Years of Great Progress in Chemical Technology】The first industrial-scale alkylsulfuric acid production plant in China was calibrated between 2018 and 256
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Ten years of rapid development in chemical engineering technology – praising the prosperity and strength of modern China. This is just a starting point; more participation will make things even more interesting. With you here, HaiChuan becomes even better. [Ten years of progress in chemical engineering equipment] – continuous updates and summaries available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html. Enhance quality awareness and promote high-quality development. -----------------------------------------In August 2018, using Sinopec’s technology, China’s first industrial-scale sulfuric acid alkylation plant was commissioned at Shijiazhuang Refining & Chemical Complex, with all performance indicators meeting the expected standards. On June 18, 2018, this production system was able to complete the entire process, producing qualified products that were then launched on the market; by July 31, over 10,000 tons of these products had been sold. This technology features simple and stable process operation, with low maintenance requirements ； It features advanced technical specifications, short processing cycles, and a high proportion of domestically produced equipment. It primarily addresses the significant issue of a shortage of high-octane components in the refining enterprises within the system, helps to produce clean fuels that meet **higher environmental standards, and provides technical support for Sinopec’s clean and green production processes. This calibration is the first one to be carried out after the plant went into operation, and it comprehensively tests the plant’s performance after operating at full load and at 120% load for 72 hours in total, including reaction conditions, product properties, chemical acid consumption and plant energy consumption, as well as the operational efficiency of the equipment. By comparing data under different loads, the impact of the entire technology and the load conditions on the material balance of the device, as well as on acid consumption and energy consumption during the process, was examined, in order to explore the technical feasibility of producing octane and methods for optimizing the process operating conditions. During the calibration period, the project team led by Shi Lian dedicated a great deal of effort and time to this task, monitoring the site of the installation on a daily basis to obtain first-hand data for the calibration ； The staff working on the stone refining process made careful adjustments and operated the equipment smoothly. They also discussed and exchanged ideas with calibration experts in a timely manner, which ensured the stable operation of the facility and kept the product quality consistent throughout the calibration process. Important technical parameters such as the octane rating of isooctane, the energy consumption of the facility, and the quality of circulating water met the set targets and showed room for improvement. This calibration provided a basis for optimizing production and carrying out technical upgrades in the future, while also enabling the accumulation of technical experience.
【Ten Years of Great Progress in Chemical Technology】Application of mesoporous molecular sieve technology in the catalytic cracking of 1.2 million tons of heavy oil from 2015 to 2018 https://bbs.hcbbs.com/thread-4882920-1-1.html (Source: Haichuan Chemical Industry Forum Website)
Alkylation products are mixtures that contain no olefins or aromatics, consisting mainly of C8 branched-chain alkanes; they have very low levels of sulfur and nitrogen, low sensitivity and vapor pressure, making them clean and ideal components for blending high-octane gasoline. With the implementation of increasingly stringent environmental protection regulations in our country, producing clean gasoline that meets these regulatory requirements has become one of the main challenges for Sinopec ； With the official introduction of the ethanol-blended gasoline policy in 2017, the oxygenate MTBE will be phased out of the fuel market ； The full implementation in 2020 of both the National VI gasoline standard and ethanol-blended gasoline implies a surge in demand for alkylated products in the market. The successful industrial application of this alkyl sulfateation technology and selective copolymerization technology will provide technical support for Sinopec’s upgrading of clean gasoline and the implementation of the Clean Water and Blue Skies program. Since the commissioning of the alkylation and copolymerization units, Shilian has carried out extensive foundational work to stabilize production in these units, determine optimal process parameters, advance system optimization, and maximize the efficiency of these facilities. In accordance with the plans set by the task force, the sulfuric acid alkylation unit was calibrated from July 23 to July 26, during which its performance after 72 hours of operation was thoroughly evaluated, including reaction conditions, product properties, chemical acid consumption, and energy consumption of the unit. Taking into account the overall production situation of the selective copolymerization unit and the operating conditions after successful commissioning, the composition of the copolymerized hydrocarbons, their boiling range, octane number, and the composition of unreacted C4 hydrocarbons under steady-state conditions were analyzed. The two sets of units explored the technical feasibility of industrial-scale units as well as methods for optimizing process operating conditions; all performance indicators of these units met the expected goals, especially those of the alkylsulfuric acid unit, whose indicators were superior to those obtained in the pilot tests. This calibration provides a basis for optimizing future production and carrying out technical upgrades, while also accumulating technical experience.
On November 15, 2018, the sulfate alkylation (SINOALKY) technology, jointly developed by entities such as the Research Institute of Petrochemical Science, Shijiazhuang Refining and Chemical Co., Ltd., and Luoyang Engineering Co., Ltd., passed the technical appraisal organized by the Science and Technology Department of Sinopec. It is believed that this technology features low temperature, low acid consumption, and good product distribution, and as a whole it has reached an internationally advanced level. The successful industrialization of SINOALKY technology marks China’s breakthrough through foreign technical barriers, enabling the development of the country’s first sulfuric acid alkylation technology with independent intellectual property rights. This technology uses isobutane and butylene as raw materials, and employs an \"N\"-type multi-stage, multi-segment static mixing alkylation reactor with multi-stage olefin feeding, which helps to increase the internal alkene-to-olefin ratio and reduce the occurrence of side reactions ； By combining a self-vaporizing acid hydrocarbon separator with high-efficiency vaporization internals, rapid separation of the gas phase, acid phase, and hydrocarbon phase in the reactor effluent, as well as removal of the reaction heat, is achieved ； By using special coalescing and separation materials and structures, the acid hydrocarbon separation efficiency of the effluent is improved; this allows for the elimination of the alkali washing and water washing steps in traditional processes, thereby significantly reducing wastewater discharge and alkali consumption from the facility and enabling cleaner production. Alkylated gasoline is a mixture free of olefins and aromatics, composed mainly of C8 branched-chain alkanes; it contains almost no sulfur or nitrogen, has low sensitivity and vapor pressure, and is a clean, ideal component for high-octane gasoline. In recent years, as China has implemented increasingly strict environmental protection regulations, the pace of improving gasoline quality has accelerated. Starting from January 1, 2019, cities such as Beijing and Guangzhou will begin implementing National VI standards ahead of schedule. In 2020, ethanol-blended gasoline was introduced on a wide scale, and the oxygenate MTBE will be phased out of the fuel market ； The full implementation of both the National VI gasoline standard and ethanol-blended gasoline means that there will be a surge in demand for alkylated products in the market. Therefore, producing clean gasoline that meets **environmental regulatory requirements is one of the main tasks facing Sinopec at present. The successful industrial application of SINOALKY alkylation technology provides a solid technical foundation for Sinopec’s upgrade of clean gasoline and for the efforts to protect clean waters and blue skies.
【Ten Years of Great Progress in Chemical Technology】The world’s first industrial-scale ion liquid alkylation plant was successfully commissioned between 2017 and 2018. https://bbs.hcbbs.com/thread-4883021-1-1.html (Source: Haichuan Chemical Industry Forum Website)
【Ten Years of Great Progress in Chemical Technology】Construction in Progress of Sinopec’s First Ionic Liquid Alkylation Project from 2018 to 2025 https://bbs.hcbbs.com/thread-4883032-1-1.html (Source: Haichuan Chemical Industry Forum Website)