The Sanitary Sound Attenuator SOUNDCIP™ is designed and
engineered by Niro to achieve maximum insertion loss with minimum pressure
drop. The unit is designed for efficient aerodynamic performance and is
constructed with superior acoustical and stainless steel materials ensuring the
reliability and performance.
The main applications are the installation
of sound attenuator in the spray dryers and fluid bed dryers exhaust systems
for food, dairy and pharmaceutical products. As the entire unit can be
Cleaned-In-Place (CIP) between the product changes, the sound attenuator is
also suitable for other product applications.
Exclusive features
and advantages:
ACOUSTIC PERFORMANCE AND LOW PRESSURE DROP
- Low frequency attenuators and attenuation over the acoustic spectrum mean
high acoustic performance.
- Low-pressure drop across the attenuators means long baffle life, reduced
energy consumption and noise emission.
DESIGN AND CONSTRUCTION
- Each attenuator selection is computer modelled against the specific
application, for optimum cost effectiveness and performance. The model draws on
an extensive database of live applications, which allows for a guaranteed
performance.
- Hermetically sealed baffles.
- Installation on the exhaust duct of the dryer and connected to the existing
CIP system.
- Meet the high demands on cleanliness, sound reduction and cleaning
efficiency.CIP by water, caustic and acid solutions with provision for
self-draining.
- Fully automatic sequence control during CIP and drying the unit after CIP.
- Low Maintenance due to CIP-system.
- Sanitary Codes applied are in compliance with the 3-A/USDA (Pending) and EN
1672-2.
- A wide range of standardised design configurations (i.e. gas flow range
from 6300 to 160000 kg/h) increase the suitability to the building
requirements, easy installation on the new and existing dryers.
Design features:
The SOUNDCIP™ is optimised with respect to:
- the acoustic properties of the attenuator material
- the thickness of the baffles
- the width and length of the baffles
The Sanitary Sound Attenuator SOUNDCIP™ consists of a rectangular housing
(1) with process gas inlet at the bottom and outlet on the upper opposite side
of the housing. The housing is equipped with slide rail system for mounting the
carrier (3). For quick insertion of baffles (2) and installation of carriers
inside the housing, wheels are provided. Each compartment with carriers is
equipped with flanged cover plates (4). The housing is equipped with CIP
nozzles and a drain facility provided at the bottom.
The waterproof
acoustical baffles are made of a sound absorbing material wrapped and sealed in
strong thin layer of PTFE-foil. The foil is welded thus providing a waterproof
protection of the absorber material. Each carrier comprises of three baffles
and stainless steel pipes are formed to accommodate baffles.
The sound
attenuator housing is provided with a pneumatically remote controlled cover at
the process gas outlet (Optional). The cover remains closed during CIP and when
the plant is not operating.
TYPICAL SOUND ATTENUATION
|
Frequency |
63 |
125 |
250 |
500 |
1000 |
2000 |
4000 |
|
dB |
5 |
15 |
34 |
32 |
16 |
9 |
8 |