driven by local rules and regulations. On average, in Buhler’s
level than mechanical systems.
efficient unloading of grain and oilseeds.
size. The Portanova is distinguished by its high degree of
ratio. It has many applications, and offers operators a
electrical power supply. The material unloaded is transferred to
fixed conveying systems or directly into rail or road vehicles.
designed to handle a wide range of free-flowing bulk materials.
by one single, competent and experienced partner. This enables
availability of the installation over many years of service. The
boot to maintain the optimal position inside the bulk material. It
material level inside the ship’s hold.
hold. These movements can also be remotely controlled by
. This is a mechanical ship unloader designed for
the flow characteristics of the bulk material. The Portalino is
as by its outstanding cost-to-benefit ratio.
unloader powered by a diesel or electric drive. It is best suited
for use unloading ship sizes of 20,000dwt to 40,000dwt.
available. The Portalino is used wherever existing quay facilities
do not allow any permanent installations.
conveying systems or directly into rail or road vehicles.
Standard Industrie (SI), founded in 1978 by Hervé Simoëns, is a specialist in the
design and the manufacture of equipment to facilitate the flow and
conveying of bulk material and powder products. Since that time, Standard
Industrie has always striven to generate value by:
- providing innovative and tailor-made solutions;
- increasing production performance;
- reducing maintenance and production cost for its customers; and
- improving working conditions by ensuring for its customers a safe and clean working environment.
Present in over 90 countries through
subsidiaries, the company (160
employees) operates in more than 60
business sectors such as cement plants, mines and quarries, steel
works, power stations, incinerators, foundries, food industries,
chemical industries, glass manufacturing plant, etc.
STANDARD INDUSTRIE PRODUCTS
SI built its success on its AIRCHOC® air cannon
(ten patents registered since Hervé Simoëns
designed the first generation in 1978) which is
considered a world leader for unclogging
material. In the last ten years, the company has
developed a range of new products, including:
LIFTUBE® conveyor optimization system,
industrial vacuuming, mechanized cleaning of silos,
scrapers, rubber conveyor buckets.
AIRCHOC® AIR CANNON
The AIRCHOC® air cannon is a pneumatic
unclogging unit, specially designed to break up
the arches and funnels which form in storage
silos and hoppers. Its scope of application has been broadened
during the past 30 years to include the cleaning of build-ups in
thermal processes such as cement or lime works, steel works
and incineration plants. AIRCHOC® air cannons
can also be certified ATEX area 20 for use where
there are risks of explosion. The operating
principle of the AIRCHOC® air cannon consists
of using a quantity of compressed air, the volume
of which varies between 1 and 400 litres (0.04 to
14.13 cubic feet) depending on the type of
AIRCHOC® used. This quantity is released
instantaneously into the storage silo through a
large outlet pipe, directly connected to the
storage unit or where the blockage has occurred.
This creates a powerful air shock-wave aimed
directly into the material, due to the instant
release of the compressed air.
There is a wide range of valve mechanisms
and pressure tanks, which enables SI to
recommend the best possible and personalized
solution for any build-up or clogging problems.
During the previous years SI has also upgraded its air cannon by
designing the fifth AIRCHOC® generation. More powerful still
(at equivalent volume), quieter and safer
but also more robust and compact, this
new AIRCHOC® 5 is recognized as an
optimum solution for these material
flow problems, whilst at the same time
more energy efficient (compressed air
This equipment is available in both a
high temperature and as a standard
The high-temperature version is
specially designed to treat problems
encountered in areas where the
temperatures are high such as in cement
works, lime plants, and incinerators.
The standard version is intended for
applications involving silos, hoppers,
chutes, piping for any kind of process
and material in foundries and in ready
mix concrete plants.
CLOGGING PROBLEMS IN SILOS AND HOPPERS
- loss of production: dead stock can represent 20% to 60% of the volume of the silos and hopper;
- loss of capacity generating functioning costs;
- deterioration of the quality of the material itcontains;
- damaging the structure by hitting with a hammer to unclog the container;
- significant clean-up and maintenance costs;and
- safety problems: cleaning silos can be labourintensive and dangerous, especially when the technique involves operators going inside the silo
- to clean it.
- powerful unclogging without structural damage;
- 100% of storage capacity recovered;
- can be used on any kind of structure whether made of steel, concrete, stainless steel, aluminium or plastic;
- efficient on all of types of bulk materials stored;
- firing sequences, tailor-made and easily set up;
- simple and user-friendly technique;
- easy to maintain;
- quick return on investment;
- safe to use; and
- extremely reliable.
- blowpipes and nozzles;
- hanging devices;
- safety and control system;
- filters and lubricators unit;
- automatic control systems;
- AIRCHOC® blow pipe isolators;
- Airsafe; and
- air compressor and buffer vessels.
Is the future pneumatic or mechanical? Neuero defends the pneumatic unloader
The use of pneumatic unloaders is sometimes questioned, writes
Tomas Kisslinger from Neuero. Those querying the effectiveness of
the equipment are often companies that have supplied pneumatic
unloaders in the past, but have not put the effort into research
and development to further the advancement and operating
efficiency of pneumatic ship unloading equipment.
This (in conjunction with problems experienced in the
development of roots blowers for this application) means that
there are some suppliers which promote only mechanical units
rather than pneumatic systems. These companies say that the
future lies with mechanical equipment. On occasion, the best
interests of the client are not properly taken into account when
recommending an unloading system.
In the past, Neuero has come across such marketing attempts
when companies talk about ‘fanless’ units, used to describe a
roots-blower-designed pneumatic unloader. The result can be
that a confused client gets information that is not entirely
accurate, and is wrongly led to believe that pneumatic
technology has no future. Neuero believes that there is a place
for both application, but that the future remains bright for
TURBO VS ROOTS (POSITIVE DISPLACEMENT PUMP)
Pneumatic unloaders can offer extremely high levels of reliability.
There are some pneumatic systems that have worked problemfree
for more than 50 years — some of these units are still in
Everything seems to be going faster these days. Speeds are
getting faster, equipment is getting smaller. This relates not only
to car engines, but also to the positive displacement pump
industry, which is being increasingly pushed to be competitive.
The development of three-lobe blowers for higher speed —
and consequently higher volumes — caused problems for
pneumatic ship unloading designs using this technology because
of over-optimistic expectations in terms of capacity.
The size reduction (and resulting cost reduction) made this
blower attractive for ship unloader use. However, if the design is
not reliable, it is not of value in such important work.
In reality, what is happening is that the development of
equipment based on roots blowers is suffering mainly because of
breaking mechanical safety barriers.
Traditional millers are used to the roots blowers, but are not
familiar with turbo blowers. It is difficult to persuade them that
today the turbo blower is a better choice than the roots-type
blower for ship unloading applications.
The result of a blower failure is a loss of confidence in the
pneumatic system, especially if the repair takes too long. This
loss of image is difficult to work with, but Neuero’s recent
orders in the milling industry shows that the message is clearly
understood — it is not the pneumatic design that has a problem,
but it is the use of a traditional blower at an extreme operating
The use of roots type blowers should be considered for a
more conservative use — oversize blowers running slower
speeds like it was in the past. This may cost more, but
equipment reliability is key in this business.
Regaining lost confidence is not an easy job. However, it is
valid work because the pneumatic ship unloading system is
extremely reliable, cost efficient, and the most environmentally
friendly solution related to dust and noise. It is also very safe
equipment to operate. In terms of safety, it is not unusual to
meet injured workers that have lost an arm caused by trying to
free a blocked chain… in a mechanical system.
The only negative point of the pneumatic design is the
relatively high installed power consumption. This has been
reduced in recent years with the use of frequency inverters.
Also, it is important to take into consideration the higher
average unloading capacity that pneumatic unloaders deliver over
Is the future pneumatic or mechanical? Neuero defends the pneumatic unloader
Neuero is supplying four 300tph pneumatic unloaders and four 600tph
unloaders to Jeddah in Saudi Arabia, half of which are already in operation.
an entire ship. Factoring in these two points means that the
‘real’ installed power effectively becomes less.
In recent years, Neuero has developed very cost-effective ship
unloaders in several sizes and different markets. Some examples
are shown below:Middle East activitySaudi Arabia
— Jeddah: Neuero is supplying four pneumatic
unloaders with a capacity of 300tph (tonnes per hour) and four
600tph unloaders. Half of these are already in operation (see
picture on p44). Also in Jeddah, Neuero has upgraded an old
unloader (see picture above).Oman Flour Mill
— Muscat: one Multiport M600 with
600tph capacity, mounted on rubber wheels.Salalah Flour Mills
— Salalah: one Multiport M300 with
300tph capacity also on rubber wheels (see picture below).
Libya: three Multiports M600 were delivered and are
currently under assembly in Tripoli.Bahrain Flour Mills
— Manama: at the manufacturing stage,
to be supplied one Multiport M300 with 300tph capacity also on
The success in this market is related to the quality of the
equipment, and developed service in the region. Neuero has
also upgraded existing unloaders, replacing roots-type blowers
with its turbo blower design.
In Germany Neuero is currently assembling a stationary
Multiport M300 in Mannheim at one of the most modern flour
mills in Germany.
As well as these projects, Neuero is investing in equipment
simulators, using the newest technology.
Using simulators means that it is easier to show customers
the equipment, offering a better presentation that is more easily
understood. Virtual training can be shown for maintenance and
operation. By expanding the use of equipment simulation,
Neuero expects to provide faster client recommendations and
solutions in the future.
Visualization makes it possible to check critical points like the
blowers and show their function.