Recently, Zhejiang Xinrui Air Separation Equipment is referred to as the first day"Cutting-edge air separation"Fujian Hesheng Gas Krypton-Xenon Project, which is contracted by EPC, has successfully completed the extraction and transformation of rare gases, the installation and construction of crude units and refining units of two sets of 55000nm h air separation units, and commissioned and produced qualified high-purity krypton and high-purity xenon products.
It is understood that the contracting scope of the project includes process package and engineering design, rare gas extraction transformation and crude device, refining device and related instrument electronic control system supply, installation and commissioning. The difficulty in the implementation of the project is the transformation of the compression process extraction of rare gases in the two sets of 55000nm h air separation units, because the transformation in the cold box involves the parking of the air separation unit, and it is necessary to carry out the construction of sand loading, tower and pipeline transformation, instrument and electronic control transformation, etc., and it is necessary to ensure that the entire transformation construction period is controlled to be completed during the 35-day owner's parking and maintenance, which is short and difficult to construct.
In view of the above difficulties, the Hesheng Krypton-Xenon project team of Xinruikong Branch took the lead in organizing the design department to continuously optimize the designThe procurement department does a good job in the procurement of equipment and engineering materials to ensure that the construction materials are procuredThe manufacturing department does a good job in the manufacture and delivery of self-made equipment;The on-site project department makes a detailed technical disclosure to the construction unit and optimizes the construction plan. With the close cooperation and joint efforts of all parties, the two sets of 55000nm h air separation units of this project were shut down and renovated in turn, and the construction of the main cold box rare gas extraction transformation and crude production system of the 55000nm h air separation unit was successfully completed within 35 days specified by the owner, and slightly ahead of the contract period, ensuring the implementation of the owner's overall production plan.
The transformation of rare gas and the commissioning of the crude system have laid a solid foundation for the completion and commissioning of the entire project. After 3 months of follow-up construction and equipment commissioning, the installation of krypton-xenon refining unit was completed, and high-purity krypton and high-purity xenon products with a purity of 6N after filling bottles were successfully produced.
Hesheng Gas Krypton-Xenon Project is an air separation technical transformation project for the technical transformation of large-scale chemical internal compression air separation units in China to extract krypton-xenon rare gases, which provides valuable engineering experience for the extraction and transformation of rare gases for many large-scale air separation units in China (especially large-scale air separation units supporting coal chemical industry) and sets up a successful model.