China’s Largest Process Screw Compressor for Hydrogen Metallurgy Is Put into Operation

  On May 23, the demonstration project of hydrogen energy development and utilization project of Zhangxuan Technology was completed and

put into operation. Three days later, the main quality indexes of green DRI products met the design requirements, and the metallization rate

exceeded 94 %. This marks the maturity of the green transformation of the smelting process of ‘ new hydrogen reduction ‘ based on the zero

reforming technology of coke oven gas instead of ‘ traditional carbon reduction ‘.

The world ‘s first hydrogen metallurgy green DRI product was produced smoothly and continuously. – - Zhongye Jing Chenggong Photo

  Kaishan provides the key core power equipment for the project : hydrogen-rich screw compressor. The compressor is an oil-free screw compressor

unit with the largest single flow and the highest exhaust pressure in China. The rotor diameter reaches 844 mm and the exhaust pressure is 0.8 MPa,

which is the highest in the domestic industry. The commissioning of the project also marks that Kaishan has completed the full coverage of the

ultra-large flow range of the oil-free process gas screw compressor operating flow of 10-1100m3 / min, reaching the international advanced level.

China ‘s largest process screw compressor is used in hydrogen metallurgy. – - Kaishan Group Co., Ltd. photo

Project background

  The project is the world ‘s first hydrogen energy utilization project using hydrogen-rich sources. Using Tenova ‘s ENERGIRON technology, the

project can reduce carbon dioxide emissions by 50 % -80 % after completion. It has become the world ‘s first new generation of low-carbon

hydrogen energy demonstration device, which will start the process of promoting the transformation of traditional ‘ carbon metallurgy ‘ to new ‘

hydrogen metallurgy ‘.

Hegang Group Zhang Xuan Technology 1.2 million tons of hydrogen metallurgy demonstration project. —— Hegang Group photo

  At present, the short process of hydrogen metallurgy is one of the best low-carbon metallurgical routes in the steel manufacturing process.

The main process 'hydrogen reduction 'is the ironmaking technology choice to achieve the goal of 'carbon neutralization in the steel industry '. 

The new hydrogen reduction process developed by the hydrogen metallurgy project of Zhangxuan Science and Technology Co., Ltd., is the 

first development and implementation of the ' coke oven gas zero reforming shaft furnace direct reduction ' process to produce green high 

purity iron technology. 
  In the future, Kaishan will join hands with domestic and foreign low-carbon metallurgical industry leaders such as Baowu Steel and Danieli 

Group to promote and adapt to the evolution needs of low-carbon smelting processes with different technical paths, provide core power 

equipment for low-carbon metallurgical units for global steel companies, practice the corporate mission of ' contributing to saving the planet ', 

and use technology to drive the future. To provide customers in the global steel sector with integrated, professional and personalized Chinese 

solutions such as process gas pressurization and energy recovery.