Jiangsu Haifa Machinery Manufacturing Co., Ltd.

With the successful commissioning of the world’s first 50,000-ton-per-year industrial-scale polypropylene carbonate (PPC) production unit based on carbon dioxide, chemical process have played a critical role in this integrated project. The PPC unit involves a high-viscosity, high-temperature, multi-component continuous reaction system, imposing extremely high demands on the reliability and stability of the conveying equipment. As the core conveying units, process pumps are responsible for the precise transfer of monomers, solvents, catalysts, and reaction mixtures, ensuring continuous and efficient operation across all process stages.

During the PPC production process, chemical process pumps must adapt to high temperatures (up to 90–150°C), high viscosity, and media-sensitive operating conditions. To this end, the pump body and wetted parts are typically made of corrosion-resistant high-performance stainless steel or special alloys, and are equipped with single or double mechanical seals to ensure long-term stable operation with zero leakage. The pump’s wear resistance low-shear design effectively protect the molecular structure of polymer materials, preventing degradation during conveying and ensuring that the final product’s quality and molecular weight distribution meet industrial standards.

In addition, chemical process pumps in the PPC unit are integrated with intelligent control systems enabling precise regulation of flow, pressure, and temperature. Through variable frequency drives and PID closed-loop control, the pumps can automatically adjust flow rates based on process requirements, ensuring stable feeding to reactors, distillation columns, and condensation systems, thereby preventing uneven reactions caused by excess or insufficient supply. The high reliability and ease of maintenance of the allow the unit to continuously produce qualified products after a successful initial startup, achieving high-capacity operation throughout the year.

In summary, the application of chemical process pumps in the PPC unit not only ensures the safe and efficient conveying of raw materials and but also guarantees the quality of polymer materials through stable operating parameters. This provides reliable support for the successful full-process operation and industrial production of the worlds first 50,000-ton PPC unit.

Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from Jingjiang Stainless Steel Pump and Valve Factory, which originally part of Jiangsu Ligong Group Co., Ltd. and the Research Institute of the Ministry of Metallurgical Industry, established in 1958. The company mainly produces API610 chemical process pumps—OH1, OH2, OH3, OH4 pumps, BB1, BB2, BB3, BB4, BB5 double-casing multistage pumps, VS1, VS4, VS5, VS6 barrel-type pumps, HES-type chemical process pumps, chemical pumps, petrochemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-free molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt 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, low-temperature pumps, high-temperature nitric acid magnetic drive pumps, magnetic drive pumps for solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, self-priming pumps, lined fluoroplastic pumps, sandwich-lined fluoroplastic pumps, leak-free pumps, desulfurization and denitrification pumps, alkali pumps, pumps, geothermal pumps, oil 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-specific pumps, refrigerant pumps, long-shaft vertical sump pumps, CQC first-class energy efficiency chemical pumps, high-pressure descaling industrial pumps, and China chemical pumps. www.jslgpump.com  Tel: 13905263417  E-mail: jslgpump@gmail  E-mail: jsareva@163.com