Pulp and Paper Pulp Production Chemical Recovery Paper Stock Preparation Paper Manufacturing Mill and Environmental Services Pump Division

Pump Supplier To The World Flowserve is the driving force in the global industrial pump marketplace. No other pump company in the world has the depth or breadth of expertise in the successful Supplier of Choice to the Pulp and Paper Industry As one of the world’s largest users of water, pulp and chemicals – for digestion, stock preparation, washing, bleaching, chemical recovery and recycling, and environmental control – the pulp and paper industry requires pumps of virtually every size and type for successful operation. As a leader in pump research and development, Flowserve offers a broad range...

Pump Designs Flowserve offers a wide range of complementary pump types, built to recognized global standards and customer specifications. These include: • Single-stage process • Between bearing single-stage • Between bearing multistage • Vertical • Submersible motor • Positive displacement • Nuclear • Specialty Available Configurations • Sealed and sealless • Axially and radially split • Volute and diffuser • Close coupled and spacer coupled • Single and double casing Dynamic Technologies Few, if any, pump companies can match the capabilities in hydraulic and mechanical design or in materials...

The Pulp and Paper Industry – Flowserve Interface While facing many of the same business challenges as other global industries, the pulp and paper industry is focused on process refinements that enhance productivity, increase energy efficiency and protect the environment. Whether using the kraft or the sulfite method, oxygen or chlorine bleaching, virgin stock or secondary fibers, Flowserve can fully meet the liquid movement needs of the pulp and paper industry.

5 Leading the Pump Industry As the global leader in pump design and engineering for the chemical processing industry, Flowserve plays a major role Materials Expertise Flowserve offers its customers an extensive range of corrosion-resistant materials – both metallic and non-metallic – along with the materials application expertise to provide the most cost-effective solutions for the very difficult services found in the pulp and paper industry. In the forefront of materials engineering, Flowserve has developed numerous alloys, including: Alloy 20 (CN7M), a highly corrosion-resistant, austenitic...

Pulp Production Due to the pervasive use of chemicals in pulp production, corrosion- and erosion-resistant pumps are critical to the pulp and paper industry. Steeped in pump research and materials development, Flowserve offers unrivaled materials, product and application knowledge. From the digester to the washers to the causticizers, Flowserve offers corrosion- and erosion-resistant designs to extend equipment life and increase process efficiencies.

Debarking Flowserve segmental ring pumps produce the high-pressure water used in debarking. Flowserve also offers recessed impeller sump pumps, slurry pumps and submersible pumps suitable for handling the large bark pieces found in this service. Pulping Whether using chemical, mechanical, or hybrid pulping methods, pumping cooked pulp requires abrasion and sometimes corrosion-resistant pumps, able to handle up to 70% solids content. Flowserve heavy-duty paper stock and hard metal slurry pumps provide the necessary toughness and versatility for this demanding application. Flowserve also offers...

Chemical Recovery Chemical recovery is the heart of the modern pulp mill. The recovery and reconstitution of black and green liquors and the energy provided by burning the organic by-products are critical to reducing the mill’s operating costs. These processes require reliable equipment that is both corrosion- and erosion-resistant. Flowserve pumps provide the required material compatibility and design flexibility.

Washing Brown stock washing has a significant impact on the cost effectiveness of the pulp mill by reducing the chemical requirements for bleaching while increasing chemical recovery. In addition to its performanceproven paper stock pump, Flowserve offers centerline and foot-mounted wash cycle pumps. Flowserve also has two-screw pumps and axially split pumps capable of handling the higher efficiency, medium-consistency wash cycles adopted by some operations. Black Liquor Extracted during the washing cycle, black liquor has a significant economic impact on a paper mill’s cost efficiency, as it...

Paper Stock Preparation Whether using virgin pulp, broke or secondary fibers, preparing the fibrous raw materials for papermaking requires mechanical treatments such as refining. Imparting specific characteristics to the paper also requires the addition of many non-fibrous components such as mineral and chemical agents. To accomplish this, pulp and paper mills need reliable pumps that are resistant to corrosion and erosion. Flowserve is a leader in the development of corrosion- and erosion-resistant materials and reliability-enhancing pump features.

Repulping Repulping dry fibers is abrasive and requires a steady and reliable stream of fresh and reclaimed water. Flowserve gives users the most flexibility in pump type and size, ensuring optimum operating efficiencies. Flotation Deinking The detergents, dispersants and foaming agents used in deinking can be erosive and corrosive. Additionally, deinking services typically contain high percentages of entrained air, which can reduce pump efficiency. The diverse range of products manufactured by Flowserve, including horizontal and vertical centrifugal pumps, affords users the flexibility to specify...

Paper Manufacturing The approach system is the heart of the paper manufacturing process. It is in this multi-pump loop that paper stock is converted into paper. In addition to producing paper, this system must accomplish multiple functions critical to the operational efficiency and cost-effectiveness of the paper mill. These functions include fiber recovery, fresh water management and energy conservation. Flowserve manufactures pumps to address all these needs.