Sinopec Hainan Refining and Chemical Million Tons of Aromatics Project completed and put into operation will help fill the gap in China's aromatics feedstock

At 2300 on September 27, Sinopec Hainan Refining & Chemical Company's 2# aromatics project sent good news. Following the successful operation and stable operation of the isomerization unit at 15:38 on September 27, the whole installation opened the whole process. The analysis of toluene products was qualified, which marked the successful start of the 2# aromatics project and the successful completion of the transformation from construction to commercial operation, which provided a gift for the 70th anniversary of the motherland.

The project started construction in August 2017 with a total investment of 3.68 billion yuan. With the project put into operation, Hainan Refining & Chemical Co., Ltd. has a p-xylene production capacity of 1.6 million tons per year, becoming the largest aromatics production base of Sinopec. The project adopts Sinopec's “Efficient Environmental Protection Aromatics Complete Technology” with complete independent intellectual property rights, and has won the National Science and Technology Progress Special Award.

The paraxylene (PX) industry chain is one of the most important industrial chains in the petrochemical industry. The upstream is the petrochemical industry, the middle reaches is the polyester polyester industry, and the downstream is the apparel and textile industry, which is closely related to people's lives. More than 98% of the world's PX is used to make purified terephthalic acid (PTA), while more than 98% of PTA is used to produce polyester (PET). At present, China's PX production capacity only accounts for about 40% of the world's total production capacity. The entire industrial chain shows a serious shortage of raw materials and the downstream production capacity tends to be excessive. The commissioning of the Hainan Refining 2# aromatics project will help fill the aromatic hydrocarbon raw materials in China. The gap is of great significance for safeguarding the integrity of the industrial chain and the economic structure.

Adhere to scientific and technological innovation 2# Aromatic hydrocarbons continue to lead the world aromatics industry

The Hainan Refining & Chemical 2# Aromatic Hydrocarbon Project integrates the latest scientific research achievements in the field of aromatics in Sinopec. On the basis of the technical indicators of the 1# aromatics project leading the global aromatics industry, Hainan Refining & Chemical actively promotes the development of the second generation of high-efficiency environmentally friendly aromatics technology. And application", to create a localized aromatics 2.0 project, to achieve six core technological innovations, further enhance the core competitiveness of independent aromatics technology, and create a new benchmark for localized aromatics technology.

For the first time, high-performance conversion and separation of new molecular sieve materials. The new generation of sorbent RAX-4000 is the first large-scale industrial application, which greatly reduces the loading of sorbent, while the sorbent treatment capacity is increased by 28%, significantly reducing equipment investment and production consumption. The first new technology for variable temperature adsorption moving bed adsorption separation. The adsorption and desorption zone temperature matching is optimized, and the processing capacity of the device is further improved. Innovative integrated control methods. Optimize and upgrade the MCS control system and special equipment for the adsorption tower to achieve a higher level of artificial intelligence, and the level of equipment automation and intrinsic safety is greatly improved. A new generation of high efficiency aromatic conversion catalysts is applied. The hydrogen consumption and aromatics loss are further reduced by 8%-10%, and the disproportionation catalyst treatment capacity is increased by 50% compared with the previous generation disproportionation catalyst. Deep integration of aromatics combined thermal integration and efficient utilization technology. Based on the energy consumption of the 1# aromatics unit, the energy consumption of the device design is reduced by 25%. The first application of the flare system dynamic simulation technology. To achieve delayed emissions, peak discharge, two sets of aromatics equipment to share the existing torch, optimize the emission reduction technology, and further improve the clean production level of aromatics complete sets of technology.

Practice green low carbon and demonstrate the image of highly responsible central enterprises

High efficiency and environmental protection are the most prominent features of China's aromatics technology, and it is the world leader in green production. Located in the important hub of “One Belt and One Road”, Hainan Refinery aims to raise the level of green development by targeting international standards and to make green low carbon a core competitiveness. The 1# aromatic hydrocarbon plant environmental monitoring indicators are comprehensively better than the latest national standards, and continue to strengthen environmental protection investment, with an accumulated investment of 160 million yuan for the environmental protection upgrade of 2# aromatics plant. Widely apply the most advanced safety and environmental protection production technologies and devices in the world, and adopt 8 advanced automatic control systems such as advanced and reliable distributed control system (DCS) and safety instrumented system (SIS) to automate and manage production operations and digitization. Intelligent, to ensure the safe and reliable operation of the production equipment. Designing anti-seepage trenches for underground pipelines in all-round areas such as aromatic hydrocarbon plants and tank farms, and supporting the construction of oil and gas recovery facilities. The emission indicators of major pollutants such as SO2 and COD are at the world's leading level, truly achieving green and clean production and achieving petrochemicals. The device is in harmony with the clear blue sky.

Promote industrial development, project construction, economic and social significance

Aromatic hydrocarbons are an important pillar of the national economy. The industrial chain is long and the products cover a wide range, which is closely related to people's lives. After the Hainan Refining and Chemicals 2# aromatics project was put into operation, it will further fill the domestic short supply of aromatics and reverse the situation of relying heavily on imports, adding new impetus to China's aromatics industry. The annual production of para-xylene in Hainan Refining & Chemical Co., Ltd. is equivalent to the cotton produced by three effective arable land in Hainan Province, and has made important contributions to maintaining the red line of 1.8 billion mu of cultivated land in China. The radiation of the Hainan Refinery and Aromatics Project has driven the development of the PX-PTA-PET industrial chain. The 2.1 million tons/year PTA and 1 million tons/year PET project introduced by Hainan Province has been completed and put into production, and the agglomeration effect has gradually emerged. The construction of the largest aromatics and polyester industrial base in the country has achieved initial success. (李强 林鸿冠 王梦璐)

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