【Major Chemical Equipment】005 – Super-large Styrene Triple Heat Exchanger
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The past decade has been a period of rapid development for China’s chemical industry, marked by the emergence of many new processes, products, and equipment. There has also been significant progress in China’s chemical manufacturing equipment, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and greater use of domestic equipment. We welcome everyone to share, discuss, and exchange ideas on this topic. ************************************ On June 17, 2021, the super-large styrene triple heat exchanger manufactured by Maoming Gravity was loaded and shipped from the company’s high-tech manufacturing facility, and was successfully delivered to Maoming Petrochemical. This equipment is the heaviest in weight among the units in Sinopec Maoming’s newly built styrene plant. The newly built styrene plant at Maoming Petrochemical uses the ST process technology; it is the largest plant of this type in China in terms of processing capacity. The super-large triple heat exchanger for styrene manufactured by Maoming Gravity is the key equipment in this plant. The equipment is 34 meters in length, with a maximum diameter of over 4 meters and a total weight of 650 tons. It consists of a low- and medium-pressure waste heat boiler, a low-pressure waste heat boiler, and a superheater. The equipment manufacturing phase for the entire project features a tight schedule, heavy workload, high difficulty, and stringent technical requirements. The shell of the triple heat exchanger unit is large in diameter and complex in structure; it has over 20,000 heat exchange tubes alone, along with more than 40,000 tube end welds. A large number of deep hole butt welds at pipe ends are a key aspect in equipment manufacturing ； Ultra-large stuffing box seal structures, stress-relief treatments, and overall lifting are the key points in overcoming technical challenges, while the short contract delivery period represents a difficulty in project management.
【Major Equipment in the Chemical Equipment Industry】004 – PDS High-Frequency Ball Valve for Polypropylene Plants https://bbs.hcbbs.com/thread-3311360-1-1.html (Source: Hua Hai Chuan Liu – Haichuan Chemical Forum Website)
The triple heat exchanger, the largest single unit equipment in Shandong Lihua Yili Jinan Refining & Chemical Co., Ltd.’s 720,000 tons per year styrene and 200,000 tons per year aromatic extraction project, is the device with the highest lifting weight among all the units in the styrene production facility. It has a diameter of 5.068 meters, a height of 41.62 meters, and a weight of 775.2 tons. This lifting operation will use the single-crane lifting method; the 1250-ton crane – I’m not sure which manufacturer produced it
November 12, 2020 (Wang Yifan) On November 9, the three-stage heat exchanger for the 600,000 tons per year styrene production unit of the Gulei refining and chemical integration project was successfully transported from Gulei Port to the site of the facility over a period of 6 hours, via roll-on/roll-off shipping and flatbed trucks. It became the last large-scale equipment of over 500 tons to arrive at the site, marking another key milestone in the construction of the styrene production unit and signaling that the installation of equipment on-site has entered its final phase.
On October 1, 2019, the lifting operation for the triple heat exchanger at Hengli Petrochemical was completed. The equipment has a diameter of 5 meters, a height of 41.6 meters, and a net weight of 740 tons. It was lifted using a CMEC Demag CC8800-1 TWIN crane as the main lifting device, with a CMEC Demag CC2800-1 crane providing assistance for positioning; the required positioning radius was 28 meters.
Is the triple heat exchanger of Hengli Petrochemical domestically produced?