【Ten Years of Rapid Development in Chemical Processing Equipment】Two products, the “40-foot liquid helium tank” and the “100-cubic-meter fixed horizontal high-vacuum multi-layer insulated liquid hydrogen storage tank”, have passed the appraisal for 2023–2025

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This post was last edited by “Fish Swimming in the Desert” on April 26, 2025, at 16:57. Let’s give a thumbs up and encouragement to the achievements made in China’s chemical engineering technology and equipment. Your participation and discussions serve as the greatest motivation for us! ********************** [Ten Years of Great Development in Chemical Engineering Equipment] This is a continuously updated summary thread; everyone is welcome to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** Two products—the “40-foot liquid helium tank container” and the “100-cubic-meter fixed horizontal high-vacuum multi-layer insulated liquid hydrogen storage tank”—have successfully passed the evaluation process. On April 9th, the China General Machinery Industry Association organized an evaluation meeting in Jiujiang, Jiangxi Province. The meeting assessed the “40-foot liquid helium tank container” developed by Hangyang Group Co., Ltd. and Jiangxi Oxygen Machine Co., Ltd., as well as the “100-cubic-meter fixed horizontal high-vacuum multi-layer insulated liquid hydrogen storage tank” independently developed by Hangzhou Hangyang Cryogenic Vessels Co., Ltd. The appraisal meeting was chaired by Huang Li, President of the China General Machinery Industry Association. Sui Yongbin, former chief engineer of the China Machinery Industry Federation, served as the head of the expert panel of the appraisal committee. The expert group is composed of experts from organizations such as the China Machinery Industry Federation, the School of Energy at Zhejiang University, the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences, CNPC International, the Jiangxi Provincial Special Equipment Inspection Institute, the Hydrogen Energy Research Institute at Zhejiang University, Lanzhou University of Technology, CNPC Kunlun Logistics Company, and the China Classification Society. The experts from the appraisal committee listened to the technical summary report submitted by the development unit, reviewed the relevant documents and materials, inspected the product, and witnessed its use via video. Following inquiries and discussions, the expert group concluded that the main innovations and technical features of the 40-foot liquid helium tank products are as follows: difficulties such as welding thin-walled aluminum alloy tubes, as well as achieving optimal balance between stiffness and thermal conductivity, were overcome; lightweight aluminum alloy liquid nitrogen cooling shields were developed, thereby improving the reliability of insulation ； A labyrinth-type multi-stage series support structure designed to handle large temperature differences has been developed, effectively reducing heat leakage from the supports ； A high-vacuum multi-layer insulation combination technology for different temperature ranges was developed, which resolved the issue of differences in heat transfer weights across various temperature zones and at 80K, thereby effectively reducing the apparent heat transfer rate of the insulation layer in liquid helium tanks. The main innovative aspects and technical features of the 100-cubic-meter fixed horizontal high-vacuum multi-layer insulated liquid hydrogen storage tank are: the development of a multi-point, hollow cold bridge support structure between the inner and outer containers of the tank, which effectively reduces heat loss at the support points ； A new type of ternary variable-density insulation structure has been developed, which reduces vacuuming time and improves thermal insulation performance ； A lossless horizontal assembly process was developed, enabling the rapid fitting of the inner and outer containers while effectively preserving the integrity of the insulation layer. The appraisal committee believes that the 40-foot liquid helium tank and the 100-cubic-meter fixed horizontal high-vacuum multi-layer insulated liquid hydrogen storage tank, both of which were developed, possess independent intellectual property rights, and their key performance indicators are at the advanced level of similar international products; it is recommended that they be promoted for wider use.