Paper Technology International 2024 - Journal - Page 92
PAPERTECHNOLOGYINTERNATIONAL
New paper machines especially have always presented a
major challenge. Machine suppliers tend to play on the safe side
and provide highly oversized vacuum speci昀椀cations. If a machine is
delivered with unsuitable vacuum equipment, the end customer has
to live with it. Runtech has rebuilt 3- to 4-year-old vacuum systems,
resulting in energy savings of over 50% or over 10 GWh/year.
Unless you specify the vacuum system for your machine supplier,
that provider will often deliver the lowest-cost option in terms of the
purchase price without considering the lifecycle costs.
The Power of EP Turbo Blowers
Switching to EP Turbo Blowers is a game-changer in energy
ef昀椀ciency. In numerous rebuild projects, energy savings of 40-70%
have been achieved when compared to traditional vacuum systems.
Energy ef昀椀ciency, a key feature of the solution, comes from both
turbo technology itself, and the ability to measure water removal and
adjust the vacuum to the optimal level.
RunEco vacuum system main parts are EP Turbo Blower,
EcoDrop Water Separator and EcoFlow Dewatering Measurement.
It is developed specially to take into account the challenges
and demands related to the dewatering and runnability of paper
machines. EP Turbo Blowers are designed to operate ef昀椀ciently
across a wide range of vacuum levels and air 昀氀ows allowing paper
mills to optimize vacuum levels. High speed motors, driven by
frequency converters, allow a typical EP Turbo Blower to provide
vacuum levels between 30 and 70 kPa. A wide range of impeller
designs allows highly ef昀椀cient levels across the operating range.
We emphasize the importance of carefully analyzing vacuum
connections, levels, and system operation. RunEco vacuum system,
comprising several smaller-size turbo blowers depending on the
machine width, offers superior design and operational advantages.
In tissue machines, depending on design and width the most
ef昀椀cient operation sometimes requires one and sometimes two
turbo blowers. Additionally, Runtech is the sole provider of both
dry and liquid ring pump technology, to form a combination of both
technologies – a hybrid system, allowing us to cater to diverse
customer demands, needs, and budgets.
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EcoFlow - online dewatering measurement
A window to the process
• Optimize dewatering
• Optimize vacuum energy consumption
• Maximize felt life
• Monitor and develop felt type
• Minimize the start-up time of a new felt
• Improve the machine runnability
• Reduce the amount of breaks
The EP Turbo Blower’s water-free design not only reduces
water and chemical consumption within the vacuum system but also
eliminates the need for water-related equipment like cooling towers
and circulating pumps. Furthermore, the RunEco system offers
several bene昀椀ts, including impellers 昀椀tted on motor shafts without
the need for a gearbox, fast and straightforward maintenance,
energy recovery through a heat exchanger on the exhaust line,
a compact and lightweight design that is easy to install in rebuild
projects, and the ability to install it step by step with minimal
shutdown time, and easy back-up connection ensuring operational
safety.
