「\"Major Equipment in the Chemical Equipment Industry\" 574-2022 Jiangsu-made Acraldehyde Molten Salt Reactor
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Celebrating the 73rd anniversary of our motherland: Looking at the ten-year progress in chemical engineering equipment. Replies will be rewarded; discussions are welcome. ------------------------------------------- On September 20, 2022, the molten salt reactor supplied by Sencor (Jiangsu) Heavy Industry Co., Ltd. (hereinafter referred to as “Sencor Heavy Industry”) to a well-known domestic enterprise was successfully shipped. This molten salt reactor is an acraldehyde reactor used to oxidize propylene into acraldehyde; it is the core reactor for producing the raw materials needed for methionine manufacturing. The molten salt reactor delivered this time has a diameter of 8 meters, a total height of 18 meters, 32,000 heat exchange tubes, and a weight of 600 tons at the time of shipment. This molten salt reactor system was independently designed by SenSong, whereas high-end molten salt reactors had previously been a monopoly of Europe. Over the past three years, SenSong has successfully achieved domestic substitution; by ensuring high quality, it has also **shortened the delivery time for these devices, earning recognition and praise from customers. The molten salt reactor equipment is not only large in size but also complex in structure, posing unprecedented challenges to every aspect of the production process, including design, manufacturing, inspection, and heat treatment. To overcome the transportation challenges, this molten salt reactor was delivered using a highly complex method of vertical integral lifting and transportation. During the manufacturing process, the project team overcame the challenge of achieving strong expansion welding for the middle tube sheet in large-diameter triple-tube-sheet reactors, ensuring timely delivery of the equipment. This helped the client expand and improve its downstream industrial chain based on acraldehyde as a raw material, thereby creating a foundation for further development and innovation in this industry.
In addition to the main reactor, this molten salt reactor system also includes the following auxiliary equipment: molten salt circulation pump, molten salt cooler, and electric heater. The main function of the auxiliary equipment is to enable molten salt circulation and stabilize the molten salt temperature. During heat transfer, in the main reactor, the radial temperature difference of the molten salt is extremely important; it generally needs to be kept within ±1.5~2°C in order to ensure that the reactions taking place inside all the tubes are as consistent as possible.
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