国内首套40万吨/年LAO装置核心设备在大连发运

Core Insights - The successful delivery of the first domestic 400,000 tons/year LAO unit's core equipment, a high-purity C4 and C6 product tower, marks a significant breakthrough in the localization of key pressure vessels in China's petrochemical industry [1] - The LAO unit is essential for producing high-end polyolefins, lubricating oil base oils, and new energy materials, with the manufacturing level of its core equipment directly impacting raw material purity and operational safety [1] Equipment Specifications - The project includes six core high-pressure thick-walled pressure vessels, with three reactors having a diameter of 2.4 meters and a wall thickness of 122 millimeters, designed to withstand long-term high-pressure conditions [1] - The high-purity C4 and C6 product towers have a diameter of 2 meters and a total length exceeding 70 meters, while the BDL washing tower has a diameter of 2.9 meters, a wall thickness of 142 millimeters, and a total length of 17 meters [1] Technological Advancements - The equipment employs innovative welding technology, "narrow gap submerged arc welding + intelligent temperature control stress relief," achieving a 100% first-pass inspection rate for weld joints, ensuring stable operation under high-pressure and continuous conditions [2] - The project has reduced manufacturing cycles and overall costs compared to imported equipment, enhancing supply chain security and independence from international supply chain fluctuations [2]