Lanshi Heavy Equipment successfully developed a low-temperature methanol wash absorption tower unit

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Lanshi Heavy Equipment successfully developed a low-temperature methanol washing absorption tower. Author/Source: Date: 2016-08-16 Clicks: 28. The main technical specifications of the first 08Ni3DR low-temperature methanol washing absorption tower designed and manufactured by Lanshi Heavy Equipment have reached the level of similar foreign products, marking a significant breakthrough in the development of ultra-low temperature vessels for gasification purification processes within the Lanshi Group. This achievement provides valuable practical experience for the design of similar products in the future, and will contribute to the advancement of low-temperature methanol washing technology in China. The 08Ni3DR low-temperature absorber is the core equipment of the project designed and manufactured by the Heavy Equipment Installation Company for Ulan Coal Group, with an annual production capacity of 1.35 million tons of synthetic ammonia and 2.4 million tons of urea. The inner diameter of this product is 4200 mm, the maximum thickness is 102 mm, the total length is approximately 89 m, the total weight is around 1000 tons, and the minimum design temperature is -80°C. This product is the first domestically produced 08Ni3DR low-temperature tower of large diameter, thick wall, extra length, and high weight manufactured by Lanshi Heavy Equipment Co., Ltd. It meets the design requirements under conditions of low temperature, medium pressure, and wet hydrogen sulfide stress corrosion, and features a shaft-type lug and a tail-lug design suitable for extremely heavy and tall towers. Ensuring the impact toughness of the weld joints in the 08Ni3DR section of the methanol washing absorption tower at -101°C is a key focus in the quality control of welding for low-temperature steels; meanwhile, it is necessary to strictly control the ellipticity and straightness of the equipment, which makes the manufacturing process quite challenging.