The plant thus also uses less fuel to raise steam without the need for any additional investment. The solution has already been implemented for the production of newsprint at a plant of the Rhein Papier paper company in Hürth, Germany, where it has lowered the need for live steam by more than three percent.
Most of the energy consumed in the paper production process is used to dry the very wet webs of paper. The webs are passed over multiple rolls, called dryer cylinders, which are heated to different temperatures using steam. The paper thus gradually releases its moisture to the atmosphere in the drying hood. In order for such a system to operate with high efficiency, the temperatures of the more than 30 cylinders over which the paper web runs must be perfectly matched to the air conditions inside the drying hood. Imbalanced settings lead to unnecessarily high steam consumption or, in the worst case, to condensation in the drying hood and thus to production outages.
The Siemens software solves this problem. It derives the optimal steam pressure as a function of the thickness and weight of the paper. Using these data, the system calculates optimized target values for all drying-relevant parameters and adapts these to the prevailing process conditions. The software also regulates the volume and temperature of the hood intake air and the volume of the hood exhaust air, depending on the moisture in the room. This ensures that humidity is never too high, and the paper can dry ideally.
Sipaper APC DrySec is a module of the Sipaper solutions platform developed specifically for the paper and cellulose industry, and it can be connected to Siemens process control systems and third-party systems. Environment-friendly solutions for the paper industry are part of Siemens’ environmental portfolio, with which the company generated about €28 billion in sales in fiscal year 2010.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
New technology for ultra-smooth polymer films
28.06.2018 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
Diamond watch components
18.06.2018 | Schweizerischer Nationalfonds SNF
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
18.07.2018 | Life Sciences
18.07.2018 | Materials Sciences
18.07.2018 | Health and Medicine