Ventilatorenfabrik Oelde GmbH

There is a multitude of different tasks for Venti Oelde centrifugal fans in chemical plants and refineries. They are needed in methanol production, in fertilizer production and in the gasification of oil, coal and residues. They also provide their untiring services in coke plants and pharmaceutical engineering. Plant constructors and operators worldwide are among those who have been our customers for many years.

Our centrifugal fans are often in use 365 days a year in arduous and hostile areas. These fans can be so equipped, that they even withstand sandstorms and snowstorms, high humidity and temperatures down to minus 50°C. Our fans run for years under adverse conditions – with high availability and energy efficiency and to the complete satisfaction of our customers.

Together with the fans, we deliver the requested equipment such as variable inlet guide vanes or dampers with drives, inlet boxes, flexible joints, silencers, ductwork and blow-off systems, as well as filters and vibration dampers. We attain optimum performance coupled with maximum availability of the plant by suiting these components exactly to the needs of our customers.

The dependable quality of our fans and systems is based on on-going technological development, high-grade materials, perfect workmanship and tried and trusted components from other manufacturers. If required, centrifugal fans can comply with the strict American Petroleum Institute Standards API 560 and 673.

For manufacturing, we use high-grade materials such as carbon steel, high-grade steel and special-purpose alloys. In addition, we equip our fans with bearings from well-known manufacturers and also use external oil feed plants for the lubrication of bearings and drives. On request, the oil feed plants can comply with the API 614 Standard.

The quality demands we make on material correlates with the high-quality of our processing. Shaft seals are designed individually to work under the specific conditions of use – if necessary we use multi-chamber labyrinth seals with gas barrier connection.

Our fans are mostly driven by electric motors, less often with steam turbines, but also by a combination of the two. On request, we equip our fans with electronic control systems from well-known manufacturers for the monitoring of rotating components.

For further information about this product please visit: http://www.venti-oelde.com/products/industrial-fans.html

To transport large quantities of dust or chips, or to bridge large distances, we have high- and medium-pressure conveyor systems in our product range. When sizing these systems, we take particular care to select an energy-efficient and wear-protected, low-maintenance design. The decisive advantages result from the use of low cross-section pipes to transport the material. This means that you only need a minimum volume of air and low power consumption for a high-capacity system. In this way, up to 50 tons of material can be transported per hour, over distances of almost 1,000 metres.

Pneumatic conveyors represent an interesting solution for the supply and disposal of bulk materials during the production process. A wide variety of bulk materials can be conveyed for storage or loading into silo stations.

Suitable options for disposal include replaceable containers, silo systems, press-container, big bags and loading onto trucks. You may also consider dust transport over longer distances using vibration troughs, conveyor belts or a floor conveyor system.

When the material concentration is high, we use our high-pressure conveyor systems. The pneumatic conveyer systems used make it possible to transport even larger bulk materials over considerable distances and over difficult routes.

Industrial filters from Venti Oelde prove their worth every day in numerous industrial sectors such as in mineral processing, metalworking & metal processing, in recycling as well as in the fibre and wood industries. Our filters clean unwanted dust from air and process gases. They are very versatile and can be used for flow rates from 1,000 to over 1,000,000 m³/h and for dust quantities up to 1,000 g/Nm³.

Venti Oelde offers a single- or double-row filter, depending upon the amount of air, the amount of dust it carries and upon the space available. All filters can be used as suction and as pressure filters. The double-row designs are arranged with a centrally located inlet corridor for the unfiltered gas.

The gas to be filtered is fed to the outside of the filter bags in Venti Oelde’s industrial filters. The bags are intensively cleaned with pulses of compressed air during normal operation, synchronised to the operation in progress. The filters meet all of the requirements which can be placed on a modern filter system:

• high flow rate through the filter media
• a long service life for the filterbags
• compact construction, low space requirements and adjustable filter height
• cost-effective operation – for example, by controlling the timing of the compressed-air cleaning and the air pressure via the pressure difference across the filter
• best filter quality and highly efficient bag cleaning resulting in low residual dust content and minimum pressure loss

As required, we make our industrial filters in galvanised, painted or stainless steel, with a minimum wall thickness of 3 millimetres for the housing. They are suitable for use both indoors and out.

We make the filters using sophisticated modular technology consisting of bent and bolted wall components. If minimum leakage is required, we can also seal the housing by welding from the inside. The filters are available in a range of heights and are designed for differing bag lengths and varying pressure levels.

The separated material is collected in the hopper and is discharged via a trough worm conveyor and rotary airlock or via double pendulum flaps. Larger quantities of material are taken away pneumatically via a transport duct. If only a small amount of dust arises, it can be discharged into bins or containers beneath the outlet.

For complex requirements, Venti Oelde offers very practical filter solutions. They are functional, reliable and have a long life. They are very efficient. And they are commercially cost-effective.

On request, Venti Oelde can supply plants on a turnkey basis. This means that we will take care of all components from the point of extraction right through to the exhaust gas stack, including the control system.

Venti Oelde also offers a PowerAirTube Reverse air filter with a combined pressure pulse reverse air cleaning process. Cleaning the filter bags with process air prevents the formation of condensation.  Centrifugal material pre-separation is produced by the tangential inlet and the optimized filter bag arrangement. Stress is, therefore, reduced in the filter zone. The fan, integrated in the filter head, provides extraction and reverse air cleaning.

This filter offers following advantages:

• Simple installation and commissioning (Plug and play)
• Ease of relocation (Drag and drop)
• Pressure shock resistance >2bar
• Effective material pre-separation
• Efficient and material-friendly bag cleaning
• Compressed-air connection not required
• Optimization of energy

Numerous forms of wastes are created in production facilities. In order to ensure problem-free production, any wastes produced must be removed from the immediate vicinity of running machines. Venti Oelde ensures clean and safe working environments by the removal, conveying and disposal of:

• Exhaust air with concentrations of hydrocarbons, heat and moisture
• Fine dust particles from production abrasion that represent a respiratory hazard, adversely affect machine control systems and mechanical components and can frequently lead to impaired products
• Endless strips of edge trim resulting from the trimming of materials
• Punch waste, trimmings from formatting and rejects, discard wastes from starting and stopping machines

We design and construct material trapping devices in collaboration with leading machine manufacturers and operating personnel.

The selection of appropriate pipe cross-sections and the optimised configuration of pipework reduce energy costs and guarantee problem-free operation. The technical specialists at Venti Oelde employ computer-aided simulations for the individual design of custom solutions for every system.

We install everything from switching systems, monitoring and control technologies, as well as control systems for split-second rerouting of material flows to safety-relevant components and switchgear.

It goes without saying that Venti Oelde also offers isolated solutions for individual machines. Standard injector systems transport the endless strips to a recovery container or a recycling plant.

For further information about this product please visit: http://www.venti-oelde.com/products/recycling-and-waste-processing-plants.html

Large and special fans are often exposed to the harshest wear attacks. Abrasive media that are carried in the air flow (e. g. clinker dust, quartz and also corundum, wood and plastic shavings) assault the material.

Wear can render high-quality machine parts inoperative in the shortest time. The resulting costs are considerable. Invest in preventive measures is economical.

Venti Oelde uses various measures to prevent abrasion to impellers and inner casing walls through friction and impact wear. Such protective measures are decided on as early as during the design of our fans. Suitable materials, high-precision machining and optimal blade geometry effectively increase service life.

Venti Oelde has verified the specific properties of the various materials and combinations through many series of tests. Precise knowledge of the process conditions allows us to select the most suitable measures for each application and load intensity. Examples of materials used are surface-hardened steels and steel alloys containing manganese and also composite materials that are sintered at high temperature.

The optimized geometry of our impellers guards against caking. The shape of our inlet-boxes, impellers and volute casings are so designed that wear and caking is minimized.

Hardfacing is ideal for fending off extensive wear attacks. Replaceable wear spirals, wear plates and deflecting plates are versatile in their application. With particularly abrasive media, surfaces are protected by hardfacing using tungsten or chromium carbide, whereby the service life of the components is many times increased. Lining by armouring is one of our quality features.

We can naturally hardface or reface impellers when repairs are carried out.

Venti Oelde utilizes water and compressed air injection and acoustic systems to detach sticky, adhering media. In special cases, the targeted addition of coarse, abrasive substances can allow a self-cleaning effect to be obtained.

Finally, our electronic monitoring systems reliably work for preventive maintenance and service at proven profitability. Installed vibration monitors control the oscillation amplitude and give early warning of dreaded material caking in the fan. Our dynamic balancing systems reduce any imbalance and vibrations by mass compensation.

For further information about this product please visit: http://www.venti-oelde.com/products/industrial-fans/wear-proof-fans.html