Sulzer’s MC pump significantly improved the client’s process and proved to be a great fit for the application. The customer was able to increase pulp consistency from 7% to 11.5%. The top pressure of the oxygen reactor was increased from 3 to 5 bars. Also, pulp temperature increased from 80°C to 92°C with the same steam consumption as earlier. Furthermore, the targets were met while also improving the energy efficiency of the MC pump by approximately 10%.
Additionally, the process improvements were not limited to the delignification phase. With the right equipment, the quality of the processed pulp became more consistent and improved with regard to the properties relevant for its end use. This also led to easier handling of the pulp in the later stages, and for instance to a smaller need for chemicals in the pulp bleaching phase.
The MCE pump was equipped with a special baseplate and a pump inlet connection. The tailored baseplate matched the mounting screws, so that the existing baseplate and standpipe could be utilized. As a result, the installation and investment costs were significantly decreased while production downtime was reduced from several days to only a matter of hours.
Sulzer employs a team with a special focus on optimization of pulp and paper processes. Usually, the cooperation involves an analysis of the medium consistency pumping system at the site, which is followed by detailed case by case recommendations for improving the process conditions. Altogether the team has over 50 years of experience in process optimization which has been used to improve hundreds of Sulzer customers’ pulp and paper lines around the globe.
Image 1: Sulzer’s MCE pump at the site
Image 2: MCE setup at the site
Sulzer is a global leader in fluid engineering and chemical processing applications. We specialize in energy-efficient pumping, agitation, mixing, separation, purification, crystallization, and polymerization technologies for fluids of all types. Our solutions enable carbon emission reductions, development of polymers from biological sources, recycling of plastic waste and textiles, and efficient power storage. Our customers benefit from our commitment to innovation, performance, and quality and from our responsive network of 180 world-class manufacturing facilities and service centers across the globe.
Sulzer has been headquartered in Winterthur, Switzerland, since 1834. In 2022, our 12’900 employees delivered revenues of CHF 3.2 billion. Our shares are traded on the SIX Swiss Exchange (SIX: SUN). www.sulzer.com
Tel: +44 (0)1905 917477
Address: Progress House, Midland Road, Worcester, Worcestershire, WR5 1AQ, United Kingdom Reader Contact: Sulzer: Janne Tamminen, MC Equipment Tender Support