"Everyone is on you, five, four, three, two, one, drive..."
With the sound of the rumbling machine, on September 2nd, Jinxi Chemical Machinery (Group) Co., Ltd. (Jinxi Chemical Machinery Co., Ltd.) passed the independent research and development, design and manufacture of the first (sets) of domestic million-tonnage PTA/CTA. The dryer officially went “walking” to the next production line and accepted acceptance from experts and users from the petrochemical industry throughout the country organized by the Science and Technology Department of Liaoning Province. It marks the PTA/CTA dryer, a large-scale ethylene core device that has been monopolized by foreign countries, and is no longer subject to human control. It also shows that the level of R&D and manufacturing of Sinopec's equipment has reached a new level.
Save half your money
The one-million-ton PTA/CTA dryer, which is one of the key projects of the “Eleventh Five-Year Plan” in China, is the key equipment for the production of polyester film, fiber and packaging resin raw materials, while the polyester fiber and packaging resin are Clothing, food and beverage packaging industry, an important raw material. In recent years, with the rapid development of garment and related industries in China, domestic PTA/CTA production has been unable to keep pace with market demand. The one-million-ton PTA/CTA dryer is an important device for realizing the large-scale production of ethylene. In the past, this “big guy” had to rely on foreign imports. Jin Wentao, president of Jinxi Chemicals, calculated such an account: Importing one million-ton-class dryer requires about 120 million yuan, while domestic equipment costs only 60 million yuan, and buying a domestic-made equipment can save half the cost. Money, production delivery time can also be reduced by half compared to similar foreign companies.
“As a representative of the user unit, I am very pleased to attend this meeting and witnessed the first test of the PTA/CTA dryer through various performance indicators in China.” Liu Wanzhi, chief engineer of Chongqing Pengwei Petrochemical Co., Ltd. pointed out that At the beginning of the promotion and construction of Pengwei Petrochemical's annual output of 1 million tons of ethylene and supporting projects, Pengwei Petrochemical actively responded to the requirements of the State and China Petrochemical Corporation, and fully promoted and implemented the localization of project process, technology and equipment manufacturing. The localization of petrochemical large-scale equipment technology can not only improve the innovation capability of China's petrochemical equipment manufacturing industry, but also narrow the gap between China's petrochemical equipment manufacturing industry and the world's advanced level. It can also significantly reduce the cost of purchasing equipment for users and greatly shorten the procurement cycle.
Luo Wende, chief engineer of China National Textile and Apparel Design Institute, said at the PTA/CTA dryer acceptance meeting that the development of large-scale PTA/CTA dryers abroad was relatively early. The main manufacturers are Japan Tsukishima Machinery Co., Ltd. and Germany's Lurgi. Eastman, they designed the device to produce 600,000 tons of ethylene per year. Compared with these foreign companies, the gap between China's PTA devices and their main performance is in the area of ​​large-scale. As the national "Eleventh Five-Year" period accelerates the localization of large-scale petrochemical equipment, the Chinese people have deepened their understanding of the process flow of PTA equipment and the improvement of the level of domestic equipment manufacturing, as well as the years of exploration and research on PTA/CTA dryer localization. Now, we have basically mastered the drying process and equipment manufacturing technology of large-scale PTA/CTA devices. The technical performance level of products can fully reach the advanced level of the current international similar technologies. The successful acceptance of the one-million-ton PTA/CTA developed by Jinxi Chemicals justified this point.
Sets four characteristics in one
Gu Wentao said: "In the development process of the million-tonnage PTA/CTA dryer, we can use four words to summarize its characteristics, namely: large, difficult, new, and refined."
The first feature is "big", and the most intuitive feature of the dryer is large. Large production capacity, domestic production capacity of million-ton PTA/CTA dryer, respectively 136t/h and 138t/h; large size, its specifications were ? 4200 × 32000 and ? 3800 × 27500; weight, weight 390 Tons and 285 tons.
The second feature is "difficult". In the process of development, we have overcome 18 issues. Difficult to design, solve the chemical process calculation, feeding machine structure, sealing structure, steam chamber structure, discharge structure and other problems; difficult to manufacture, conquered the cylinder concentricity, the straightness of the cylinder, roller bake, tube bracket Pairs (not more than 2mm), chamber pair, sealing surface of the discharge end, large area polishing, assembly and debugging and other difficulties; difficult to detect, such as the measurement of the diameter of the roller plate, the measurement of the coaxiality of the tube holder, etc. , Must use special equipment to detect the tooling in order to ensure the smooth progress of the test; transport is difficult, the main body diameter 4.984m, length 34.59m, weight 285 tons, test the ability to hoist, transport.
The third feature is "new", including new products, new technologies, and new processes. The new product, which is the first set of domestically-developed equipment, fills domestic gaps; new technologies, integrates our three patented technologies, has independent intellectual property rights, and adopts existing advanced technologies such as slow start, hydraulic coupling Etc.; new processes, such as roller bake, large area polishing, etc.
The fourth feature is “fineness”. Through the use of new technologies and new processes, meticulous design and lean manufacturing are carried out. The final completion of the dryer test data is better than the industry standard, better than the design indicators, and reaches the advanced level in foreign countries.
Gu Wentao told reporters that after the acceptance of the PTA/CTA device, they will combine the expert's suggestions to further improve the product's technical indicators and develop the product in a direction of specialization and serialization.
Large-scale petrochemical device localization "speed"
With the rapid development of the petrochemical industry, the level of China's petrochemical equipment has also been significantly improved. Through the digestion and absorption of imported technology and independent development, we have developed a large number of petrochemical equipment with advanced technology and high quality.
At present, the main process equipment of oil refinery equipment has basically achieved autonomy, and the autonomy rate of 10 million tons of oil refining equipment has reached 90%, among which, atmospheric and vacuum units, catalytic cracking, hydrocracking, hydrofinishing, continuous reforming and The key equipments in delayed coking and other devices have all been independently designed, independently manufactured and self-contained; the autogenous rate of the annual output of 10,000 tons of ethylene complete sets has reached 70%, among which cracking gas compressors, ultra-high pressure tubular heat exchangers, and low temperature Key equipment such as cold boxes, labyrinth compressors, and automatic packaging machines have been independently manufactured and have been successfully applied to many domestic technological transformation projects.
However, it should be pointed out that due to the low concentration of differences, lack of R&D innovation capability and foreign technology monopoly, coupled with factors such as the disconnection of equipment design and manufacturing from the technology, the overall level of China's equipment manufacturing industry is still unable to adapt to large-scale industrial equipment. The requirements for the automated development of the technological process require that some high-value-added, high-tech processing equipment have to be imported in large quantities, which seriously restricts the overall competitiveness of China's petrochemical industry and the sustainable development.
In order to accelerate the pace of major equipment localization, the National Development and Reform Commission has issued a "Notice on Printing and Distributing the "11th Five-Year Plan" Major Technical Equipment Development and Special Industrial Technology Development Special Plan". The notice proposes to focus on the development of eight major technical equipment and four major industrial technological developments, and gradually change the passive situation in which core technologies and key equipment rely on foreign introduction to promote the optimization and upgrading of China's industrial structure. To this end, the state has identified 16 major technical equipment and products as the key points for development during the “Eleventh Five-Year Plan” period in China, and large-scale petrochemical equipment is among them.
According to the "Eleventh Five-Year" development plan of China's petrochemical industry, by 2010, China's refining capacity will reach 400 million tons, with a focus on the construction of 8 million-ton-grade refineries in Qingdao and more than 20 million tons of crude oil processed in the country. Base; ethylene production capacity will reach 18 million tons, focus on the construction of Fushun, Tianjin and Zhenhai seven large ethylene devices; PTA production capacity will reach 16 million tons, focusing on the construction of Yizheng, Jinan, Fuling, Dalian and Huizhou more than 10 projects. The value of petrochemical equipment required for the rapid development of the petrochemical industry amounts to 30 billion yuan each year, providing a rare historical opportunity for the autonomy of petrochemical equipment. According to the requirements of the National Development and Reform Commission, the localization of large-scale petrochemical equipment will be “accelerated.”

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