Pulp, board and paper processes and applications as well as new technologies based on wood raw materials represent high-priority commitment and partnership areas for the business and product development organization of Sulzer. End suction single-stage centrifugal pumps cover 85% of all pumping needs in the world. Thanks to the new design principle developed by Sulzer, the efficiency of especially the largest energy-demanding pumps can now even beat the efficiency of double suction pumps, which traditionally had better efficiency.
Process reliability, high efficiency and low operating costs
Our AHLSTAR pump range is the world’s most comprehensive pump series for demanding industrial processes, in particular for the pulp and paper industry. A wide range of various hydraulic units, materials and shaft seals have been developed to cover the requirements of the various pumping applications. The AHLSTAR range exceeds the technical and quality requirements of the international standards ISO 5199 and ISO 2858. In the design of the pump series, we paid attention to the specific requirements of customers in the pulp and paper industry, such as good pumping performance of fiber-containing stocks and gaseous liquids as well as reliable shaft sealing solutions.
To offer the best solution, it is very important for us to identify the specific requirements and parameters of each pumping application and to be familiar with the pumped liquid such as viscous fluids, fiber-containing sludge, mineral slurries, and liquids that contain large solids. The AHLSTAR pump range is designed to suit various liquid types in all industrial applications:
- Clean liquids and liquids containing some impurities (water, chemicals etc.);
- Viscous liquids (oils, syrups, black liquor etc.);
- Fiber-containing sludge (pulp and paper stock, other fiber-containing sludge etc.);
- Non-fiber-containing sludge (mineral slurries, kaolin, lime milk, light mining slurries etc.);
- Liquids which contain large solids (chip water, waste water, recycled materials).
The pump series can also manage all different combinations of the basic liquids. In addition to fibers, the pumped liquid, for example pulped recycled paper stock, may contain large solids and some mineral slurry.