【Ten Years of Rapid Development in Chemical Equipment】Fluidized bed reactor head made of material N08810 for high-purity silicon-based materials projects from 2012 to 2021

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Witnessing the decade-long rapid development of chemical processing equipment; praising the prosperity and strength of modern China. Replies will be rewarded – discussions are welcome. ------------------------------------------- On March 17, 2021, the renovation of the fluidized bed reactor for the high-purity silicon-based materials project carried out by Lanshi Heavy Equipment for Xinjiang Daquan New Energy Co., Ltd. was completed, and the equipment was shipped on schedule. The fluidized bed reactor modified this time involves replacing the head made of 347H material with one made of N08810 material. The main challenges lie in the potential safety risks posed by residual media inside the equipment, the quality control of welding between these two different materials, 347H and N08810, as well as the control of the overall dimensions of the equipment. The company established a specialized team composed of representatives from the technology, quality, safety, and production departments. After thorough research and analysis, and taking into account the significant differences in chemical and physical properties between different materials during welding, as well as the tendency for cracks to occur during this process, a suitable welding solution was developed.