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
Etching Microstructures with Lasers
25.10.2016 | Fraunhofer-Institut für Lasertechnik ILT
Applying electron beams to 3-D objects
23.09.2016 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
06.12.2016 | Materials Sciences
06.12.2016 | Medical Engineering
06.12.2016 | Power and Electrical Engineering