Jiangsu Haifa Machinery Manufacturing Co., Ltd.

In sulfuric acid plants, sulfonation units, chemical intermediate production, acid circulation systems, and concentrated sulfuric acid storage and projects, high-temperature concentrated sulfuric acid pumps are key conveying equipment. Concentrated sulfuric acid is characterized by strong corrosiveness, strong oxidizing properties, and high-temperature operating conditions. Especially in projects involving 93%–98% concentrated sulfuric at temperatures above 80°C, ordinary chemical pumps prone to issues such as corrosion, leakage, seal failure, and bearing temperature rise. Therefore, selecting a mature and reliable high-temperature concentrated sulfuric acid pump is crucial for the continuous and stable operation of the unit.

High-temperature concentrated sulfuric acid pumps are typically made of corrosion-resistant metal materials. Common materials include Alloy 20, 904L, 316L, high-silicon cast iron, or, depending on the operating conditions, duplex stainless steel, Hastelloy, etc. For the transportation of high-temperature concentrated sulfuric acid, material selection should be based on a comprehensive evaluation of sulfuric acid concentration, temperature, flow rate, head, chloride ion content, and impurities, to avoid pitting corrosion, intergranular corrosion, or erosion corrosion caused by improper material selection.

In terms of structural design, Jiangsu Haifa Machinery Manufacturing Co., Ltd. offers high-temperature concentrated sulfuric acid pumps in configurations such as horizontal centrifugal pumps, magnetic drive pumps, vertical sump pumps, or API-standard chemical process pumps. continuous-operation concentrated sulfuric acid projects, the pump casing should have good pressure resistance and stable hydraulic design. The shaft seal system should prioritize mechanical seal solutions that are resistant to high temperatures and strong acids. Seal faces can be made of materials such as silicon carbide or cemented carbide, while auxiliary seals should be based on temperature conditions, using materials such as PTFE, flexible graphite, or perfluoroelastomer.

A mature high-temperature concentrated acid pump must not only corrosion resistance requirements but also emphasize operational safety. Before operation, the inlet piping, valves, filters, cooling system, and seal flushing scheme should be inspected. Idle running and prolonged low-flow operation are strictly prohibited. During operation, outlet pressure, motor current, bearing temperature, vibration, and seal leakage should be regularly monitored.

The mature application of high-temperature concentrated sulfuric acid pumps in concentrated sulfuric acid projects is in reliable materials, stable structure, safe sealing, and convenient maintenance. Through proper selection and standardized operation, leakage risks can be effectively, enhancing the safety and continuous operation capability of the acid conveying system. These pumps are widely used in sulfuric acid production, chemical acid circulation, smelting off-gas acid production, fine chemicals, and environmental treatment fields.

Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from Jiangsu Ligong Group Co., Ltd., established in 1958, and the Jingjiang Stainless Steel Pump and Valve Factory of the Iron and Steel Research Institute of the Ministry of Metallurgical Industry The company primarily produces API610 chemical process pumps—OH1, OH2, OH3, OH4 pumps, BB1, BB, BB3, BB4, BB5 double-casing multistage pumps, VS1, VS4, VS5, VS6 barrel-type pumps, HES process pumps, chemical pumps, deep-sea chemical pumps, deep-sea gas-liquid mixing pumps, petrochemical pumps, sixth ultra-low carbon stainless steel high-quality leak-proof molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt pumps, high-temperature sulfuric acid pumps, pitot tube pumps, rotary jet pumps, low-flow high-head pumps, multistage vortex pumps, high-temperature molten salt pumps high-temperature nitric acid pumps, vertical sump pumps, magnetic drive pumps, low-temperature liquid hydrogen and methanol pumps, high-pressure liquid hydrogen pumps,-temperature pumps, high-temperature nitric acid magnetic drive, magnetic drive pumps for solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps self-priming pumps, fluoroplastic-lined pumps, clamp-lined fluoroplastic pumps, leak-proof pumps, desulfurization and denitrification pumps, alkali pumps, pumps, geothermal pumps, pumps, axial flow pumps, printing and dyeing pumps, dyeing and finishing pumps, Ti alloy pumps, C-276 material, Hastelloy, 316L material, 347 material, forced circulation pumps, fourth-generation nuclear pumps, nuclear island pumps, CCA/IACS marine pumps, filter press dedicated pumps, refrigerant pumps, long-shaft vertical sump pumps, CQC Class 1 energy efficiency chemical pumps, high-pressure descaling industrial pumps, China chemical pumps, 《GB 19762-2025 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Centrifugal Pumps》, and Dun & Bradstreet certification. www.jslgpump.com  Tel: 13905263417  E-mail: jslump@gmail.com  E-mail: jsareva@163.com