JHB1400-22 high-flow high-temperature concentrated sulfuric acid sub-pump is Kunming Jia and Pump Co., Ltd. In order to meet the large-scale development trend of sulfuric acid plant in China, based on the absorption of advanced materials and structural characteristics of concentrated sulfuric acid pump at home and abroad, based on the company concentrated sulfuric acid Pumps R & D and production experience and successfully developed products, the main technical indicators: flow 1400m3 / h, head 22m. Main technical characteristics: large flow, About 0.025mm. Pump, impeller and other structures applied Tsinghua professional design software for hydraulic model heat treatment, with good mechanical properties, replacing the traditional method of shaft PTFE. This pump was installed on a system of 600,000 t / a flue gas sulfuric acid plant of Guixi Smelter of JCC in September 2004 to replace the imported pump. The operating conditions are: sulfuric acid concentration 98% H2SO4, sulfuric acid temperature 80 ~ 90 ℃ .More than six months without maintenance inspection, no corrosion detection downtime.Recently by the Yunnan Phosphorus Chemical Industry Association, from Yunnan, Jiangxi, Guizhou, Anhui, Hubei, Jiangsu and other provinces of sulfuric acid process equipment experts, the Jiangxi Copper Group Guixi Sulfuric acid plant in a sulfuric acid plant siphon acid circulating pump system used in a large flow of high-temperature concentrated acid pump, the comprehensive performance indicators were reviewed, the experts agreed that JHB1400-22 pump performance has reached the international advanced level, It has filled the blank of the domestic 1400m3 high-temperature high-temperature concentrated sulfuric acid submerged pump. The successful development of this pump has accumulated experience for the research and development of large-flow high-temperature concentrated sulfuric acid submerged pump and made great contributions to the localization development of large-scale chemical and smelting installations in China Contribute.