The 14th China International Aviation and Aerospace Expo will be held in Zhuhai, Guangdong Province on November 8. The 28 innovative achievements in aerospace fluid power technology developed by the Sixth Academy of China Aerospace Science and Technology Group will be presented. This air show will be an important stage for the Sixth Academy to display the latest development achievements.

The achievements of this exhibition arrangement are the star products of the Sixth Academy, which have been widely concerned by the society and the domestic and foreign markets in recent years. They fully display the latest scientific and technological achievements of the Academy in the field of aerospace liquid power. There are 4 achievements in the aerospace exhibition area, 1 in the defense exhibition area, 3 in the Winter Olympics exhibition area, and as many as 20 achievements in the aerospace technology transformation and application exhibition area.

At the same time, the Sixth Academy has widely applied the core technology of aerospace liquid power to the civil industry. In response to the current national demand for energy conservation, environmental protection and high-end equipment, it has developed a series of civil products with international and domestic leading levels to help solve the "choke" technical bottleneck in the industry, so that people can personally experience the wonderful life of aerospace technology services.

The official WeChat of the Academy launched a series of columns of "Famous Air Show Products", publishing the stories behind the star exhibits of the Sixth Academy before the opening of the air show.

Xi'an Aerospace Engine Co., Ltd. of the Sixth Academy of Aerospace Science and Technology Group has witnessed brilliant development in both industries, and a number of products will be intensively presented at Zhuhai Airshow. Among them, Xifa Huayang has overcome the "choke" technology of hydrogen fuel cell core materials and equipment to achieve a comprehensive layout in the hydrogen energy field; The intelligent management terminal of tools and apparatuses integrates production and management technologies, and the aerospace freight forwarder helps the "unmanned factory" lean management to improve the economic benefits of the enterprise; The 50000 to 70000 t/a n-butane maleic anhydride reaction unit broke the monopoly of foreign companies on the Chinese market at one stroke, and XD Huawei broke through a series of core technical difficulties, forming a number of national invention patents and provincial and ministerial science and technology achievements awards with independent intellectual property rights.

XI'AN SEF Huayang Breaks Down the Core Material and Equipment Blocking Technology of Hydrogen Fuel Cell

Hydrogen energy is a kind of secondary energy with extensive sources, clean carbon free and rich application scenarios. Developing hydrogen energy is an effective way to solve the problem of "carbon peaking and carbon neutralization". Fuel cell is the focus of future development of world powers, and the fuel industry has developed rapidly in the use of hydrogen energy. At present, domestic high-end core materials of fuel cells mainly rely on foreign imports, causing the "bottleneck" problem of China's hydrogen energy development.

In order to realize the localization of hydrogen fuel cell equipment, in 2017, Xifa Huayang set foot in the field of hydrogen energy core material equipment manufacturing relying on the precision manufacturing technology of aerospace machinery. In 2021, the company will use the core technology of printing and coating equipment to make comprehensive layout and continuous breakthroughs in the field of hydrogen energy core materials and equipment, breaking the technological monopoly of foreign equipment manufacturers, and filling the technical gap in the field of domestic hydrogen energy key material production equipment manufacturing. At present, the core materials and equipment of hydrogen fuel cell mainly include complete sets of gas diffusion layer equipment, proton exchange membrane production equipment, and membrane electrode production equipment. The company can customize personalized, automatic, energy-saving, and intelligent products according to customer needs, and provide customers with the most reasonable technical solutions for production equipment.

In order to solve the technical difficulties of the complete set of gas diffusion layer equipment, the company established a research and development team, and on the basis of understanding the production process of the gas diffusion layer, the company tackled the key problems of brittle material transmission, brittle substrate coating molding and other technologies, forming a complete set of solutions for the complete set of gas diffusion layer equipment; Aiming at the production difficulties of proton exchange membrane, the micro tension unwinding technology of easily stretched membrane, the precise control technology of solvent in the membrane and the wet compound technology of easily stretched membrane without pressure roller have been developed, forming a full set of solutions for proton exchange membrane production equipment; During the development of membrane electrode production equipment, the team members fully communicated and repeatedly tested, developed multi shape series precision coating, "direct coating+transfer printing" combined coating and other technologies, and formed the membrane electrode production equipment and process technology scheme.

It is estimated that by 2025, the whole market will have more than 13 sets of complete sets of hydrogen energy functional material gas diffusion layer equipment, more than 16 sets of proton exchange membrane equipment and more than 32 sets of membrane electrode equipment. It is estimated that by 2030, more than 88 sets of complete gas diffusion layer equipment, 123 sets of proton exchange membrane equipment and 160 sets of membrane electrode equipment will be formed.

Through technology iteration and application expansion of core materials and equipment of hydrogen fuel cell, Huayang Company will apply hydrogen core membrane materials manufactured by core materials and equipment of hydrogen fuel cell to aerospace, industry, transportation, energy storage, construction, consumer goods and other fields on a large scale in the future.

XI'AN SEF Unmanned Space Freight Forwarder Factory

The intelligent management terminal of tools and apparatuses of Xifa Company introduces intelligent containers and target detection algorithm based on deep convolution neural network to achieve accurate tool detection, positioning and classification, solve the problems of low automation and high labor cost in the process of tool management, use and process control, and achieve the goal of intelligent and information-based automatic borrowing and returning statistical management of tools and apparatuses, It plays an important role in ensuring the stable operation of the use and management of enterprise key tools.

Intelligent consumable cabinet

Intelligent tool cabinet

The terminal has "326" functional characteristics, namely, three authentication modes, two management modes, and six functional modules, enabling intelligent and simple management and use.

This intelligent management terminal creatively applies visual recognition technology to tool management, and takes the lead in combining accurate positioning, fast algorithm and visual recognition technology to achieve the purpose of accurate recognition of tool borrowing and returning.

The intelligent management terminal of tools and instruments can be customized for tools and instruments according to the needs of enterprises. Through the customized software system, the functions of tool filing, classification, ex warehouse, warehousing, receiving and returning can be realized, the whole process of tool use can be tracked, the responsibility system can be effectively implemented, tool loss can be avoided, and the accuracy and efficiency of tool management can be greatly improved. It can be widely used in factories, research institutes, aviation, aerospace, fire protection Electric power and other industries.

Since its development in January 2020, small batch production has been realized through preliminary market research, scheme design, production testing and technical improvement and innovation. The equipment has been inspected by the national testing agency for stable performance, high accuracy and qualified inspection. At present, the intelligent management terminal of the tool and instrument has obtained a number of national patents, and the project achievements have reached the domestic leading level.

The successful development of this type of terminal has made rational use of the scientific research achievements of colleges and universities, realized the transformation of science and technology into productivity, laid a solid foundation for "product innovation leads the development of the industry", contributed to the construction of a scientific and technological power, and played an important role in leading the high-end, supporting the key, and leading the demonstration.

The intelligent management terminal of tools and apparatuses integrates production and management technologies, quickly realizes the borrowing and returning of tools and apparatuses, improves production efficiency, promotes lean management of enterprises, and improves economic benefits of enterprises. The intelligent management terminal of the tool and instrument has a broad prospect. The aerospace freight forwarder will continue to update the products to meet the growing production demand of the market and provide a strong guarantee for the improvement of enterprise efficiency and standardized management.

50000 to 70000 t/a n-butane maleic anhydride reaction unit

Maleic anhydride (hereinafter referred to as maleic anhydride) is an important organic chemical raw material commonly used. Its production methods include n-butane method and benzene method. Before 2010, domestic maleic anhydride production was mainly based on benzene process. Since the cost of benzene process continued to rise, n-butane gradually replaced the benzene process unit with its price advantage.

The 50000 to 70000 ton/year n-butane maleic anhydride reaction unit developed and produced by Xifa Huawei is the core key unit for producing maleic anhydride by catalytic oxidation of n-butane and air. The whole set of reaction unit mainly includes tubular fixed bed reactor, molten salt electric heater, molten salt regulating valve, molten salt cooler and other equipment. Corresponding molten salt and steam systems can be provided according to project requirements.

The unit weight of the reaction device exceeds 700t, the shell diameter reaches 9000mm, the reaction tube length is 7m, the number of tubes is about 50000, and there is no pipeline connection between the devices. The device has the advantages of compact structure, less land occupation, small heat medium capacity, convenient operation, etc. The axial and radial temperature difference and other performance indicators of the reactor are excellent, and the flow of the axial flow pump of molten salt can reach 10000m ³/ H or above, to ensure that the reaction heat can be removed in a timely and full manner, and at the same time, high-quality steam with a by-product of more than 10MPa can be produced. At present, the unit is the largest, most advanced and most reliable large n-butane maleic anhydride reaction unit in China. Compared with the imported units, the unit has obvious price advantages and good market competitiveness.

Huawei has been paying close attention to the development of maleic anhydride industry for a long time. Since the first domestic 20000 t/a n-butane maleic anhydride reaction device was successfully developed in 2012, the first domestic 30000 t/a n-butane maleic anhydride reaction device was successfully developed in 2015. By 2021, the company has developed and designed the first 50000 to 70000 ton/year n-butane maleic anhydride reaction device in China. At present, the device is nearing the end of manufacturing and will enter the stage of equipment installation, commissioning and operation.

The reaction unit broke the monopoly of foreign companies on the Chinese market at one stroke, and broke through a series of core technical difficulties such as feed gas distribution, uniform flow field and temperature field, and dual pump circulation of heat medium in large reaction units

According to the characteristics of long-term high-temperature operation of maleic anhydride reaction unit, high-performance steel with excellent performance and ASME standards is selected to form a number of national invention patents and provincial and ministerial science and technology achievement awards with independent intellectual property rights.

Since 2021, Huawei has taken the initiative to seize the opportunity and actively explored the market. It has successively contracted more than 10 sets of 50000 to 70000 tons/year n-butane maleic anhydride reaction system design and manufacturing business, with a total contract amount of more than 300 million yuan. At present, Huawei is still in in-depth contact with interested customers. This marks that the design, manufacturing and overall assembly and welding strength of Huawei's 50000 to 70000 ton/year n-butane maleic anhydride reaction unit has reached the world's advanced level.

In recent years, with the adjustment of the national environmental protection policy, the demand for maleic anhydride as the raw material of degradable materials is growing rapidly, and because of the obvious cost advantage of a large number of high-quality steam by-products, the n-butane maleic anhydride reaction unit will also usher in a good development prospect. From the perspective of market demand, there will be a market capacity of more than 1 billion yuan every year in the next few years. In addition, under the macro policy background of large-scale and intensive chemical construction projects, n-butane maleic anhydride reaction units with larger capacity and reaction systems with lower energy consumption are the main development directions in the future. Editor/Zhao E