An update from the air separation industry, 20160914: Hangzhou Fosda signs a contract for a hydrogen recovery cryogenic tank project

Thread Content

Fosda continues to achieve excellent results – great job! On August 8, 2016, Hangzhou Fosda Cryogenic Equipment Co., Ltd. (hereinafter referred to as “Hangzhou Fosda”) signed a contract for a cold box used in hydrogen recovery for synthetic ammonia production with Puyang Baolong Clean Energy Co., Ltd. (hereinafter referred to as “Puyang Baolong”). The ammonia synthesis hydrogen recovery cryogenic tank currently in use at Puyang Baolong was supplied by a foreign company; it has been in operation for 25 years. In recent years, the equipment has experienced multiple leaks, its operating conditions have been poor, and its performance has declined. Even after being restarted and heated, it fails to return to normal operating conditions, and its energy consumption is high. As a result, the customer decided to upgrade and renovate this facility. Hangzhou Fosda won this renovation contract thanks to its excellent corporate reputation and high-quality proposals. For this technical upgrade, Hangzhou Fosda proposed a solution that involves replacing the existing cold boxes with entirely new skid-mounted cold boxes. The heat exchangers inside these cold boxes are high-pressure aluminum plate-fin heat exchangers, as an alternative to the coiled-type heat exchangers. The design pressure of the aluminum plate-fin heat exchanger is 12.0 MPa, making it the plate-fin heat exchanger with the highest design pressure and the greatest manufacturing difficulty in China at present. Compared to coiled heat exchangers, this set of aluminum heat exchangers features high heat exchange efficiency, low resistance, and a compact design. As a result of this technical upgrade, the benefits for users are twofold: first, the quality of the gas produced by the cold box is high, and second, there is a significant energy-saving effect. Plate-fin heat exchangers are used in the hydrogen recovery cold boxes for ammonia synthesis; this is the first time such technology has been employed in China. It adds a significant value to Fosda’s product innovations, fills the gap in domestic production of this type of chemical cold box, and reflects the rigorous work ethic and strong innovative spirit of Fosda’s R&D team. It also indicates that Fosda is poised to make further breakthroughs in the field of chemical cold boxes.