China’s Largest Nitric Acid Absorption Tower Successfully Developed

The core equipment of the nitric acid plant, φ4600mm nitric acid absorption tower, has been successfully developed in Sichuan Blue Star Machinery Co. The absorption tower will be used in the largest 150,000 tons/year domestic nitric acid plant. This marks that China has the ability to independently design and manufacture this kind of large chemical equipment at the world technology level. It fills a long-standing gap in this field in China. At present, the absorption tower has been shipped to the user enterprise Sichuan Meishan Jin Sheng Saerui Chemical Company. The φ4600mm nitric acid absorption tower is manufactured in 3 sections and assembled on spot. Its diameter is 4.6 meters. Its length is 63.1 meters. The weight reaches 246 tons, and the output value of a single unit is 12 million RMB. All these data created the highest data for Blue Star Machinery Company in 40 years. To improve the energy-saving and environmental protection performance of the equipment, so that the absorption rate of nitric acid mist reaches more than 99%, the tail gas nitrogen oxides ≤ 200ppm. It is necessary to ensure that the straightness deviation of any 3-meter-long cylinder section of the absorption tower must not be greater […]