Hiller DecaPress decanter underground

Power generation

To ensure the ability to reliably cover humanity's growing energy needs for the future, in energy generation the focus is increasingly not only on efficiency but also on sustainability and environmental friendliness, and research is being carried out for future-proof solutions. This means that the entire industry sector is undergoing continuous change, continuously creating new potential applications for such a versatile machine as the decanter. Hiller high performance decanters have been successfully in use in the energy sector for over 50 years. Many tasks for our decanters in this field relate to the dewatering of various residues, but they also play a key role in the generation of the raw materials.

Resource-conserving oil reclaiming

n addition to these traditional tasks in the field of waste material preparation, recycling tasks play an enormously important role. This is because due to rising oil prices and increased levels of environmental awareness, the reclaiming of mineral, plant-based and animal oils from various waste products and by-products has been becoming ever more important for some years now. The correct preparation of millions of tonnes of mineral oil sludges worldwide from conveying, storing and refining crude oil generates a valuable raw material and energy source. Potential hazards for water, air and earth are removed and surfaces previously lost are made available again for appropriate usage. The processing of plant-based and animal-based waste also opens up sources for high quality oils and greases, and frequently also converts the solids in the waste into a valuable by-product.

Hiller 3-phase decanter

The Hiller decanter with 3-phase technology was designed specifically for the highly efficient separation of solids with simultaneous separation of two liquid phases.

The mixture requires a fixed feed pipe in the turning bowl and is spun radially against the drum wall. The centrifugal force generated by the drum rotation rapidly deposits the solid particles onto the drum wall, and from here it is transported to the solids discharge openings via a screw conveyor. Whereas the clarified liquid flows on the scroll into the liquid discharge zone, the centrifugal force causes the separation of the non-mixing light and heavy phases (normally oil and water); the oil collects in the direction of the rotary axis whereas the water continues to collect in the direction towards the drum wall. An overflow weir or a retaining disk in the liquid discharge zone separates the two phases, whereby oil and water can flow in separate chutes outside the rotor. The power levels of the oil and water phases are set in line with the relative density of the phases and the corresponding volumes to achieve optimum separation of the two liquids. The liquid phases can be conveyed away via weir disks, adjustable tubes or a skimming disk. The optimum solids separation, lowest residual solids separation and maximum purity of the liquid phases can be achieved by setting the liquid levels in the rotor and the differential speed of the screw conveyor.

Industrial decanters in ATEX design

All our decanter centrifuges can be designed according to ATEX requirements. Our design for the ATEX decanter takes the customer's wishes into consideration and all requirements that have to be met - depending on the respective application and the installation environment. You can rely on decades of experience of our team members. (>> ATEX)

Benefits

Depending on the application in question, Hiller high performance decanters feature a range of important advantages:

1. High product value thanks to maximum purity of the products obtained
2. Minimised disposal costs thanks to minimal residual moisture in the solids
3. Very low personnel costs thanks to the suitability for continuous operation and automatic operation
4. Low space requirement due to very compact dimensions
5. Minimal odour and aerosol emissions due to the closed design
6. Design based on simple and cost-effective upkeep, as well as on a long service life
7. Robust, industry-compatible design and high quality "Made in Germany" production.

>> Oil & gas, power generation brochures >> Explosion-protected decanters (ATEX) brochures

Schematic sectional drawing through a HILLER TricaPress three-phase centrifuge

Chemical industry

Developments in the chemical industry are of enormous importance for the wellbeing of humanity and are generally closely linked to other fields, such as the processing and pharmaceutical industries. In this sector there are numerous processes for which Hiller decanters are ideally suited. Whether it's the extraction of specific contents, classification, dewatering or the separation of different liquid mixtures. Processes in the chemical and pharmaceuticals industry must be safe and error-free, and must also run efficiently. Specifically for this sector, we have developed decanters that meet these high requirements. As well as the traditional Hiller decanters, gas-tight decanters designed for operation in explosion safety zones that conform to ATEX regulations are also used here.

Gentle product processing

The market for food and drink is experiencing continued growth. Industry is required to provide a high level of services to be able to meet the wide variety of customer requirements. As a result, suppliers to this industry sector face high requirements in relation to hygiene, efficiency and gentle product processing. Hiller decanter technology has been successfully deployed in a wide variety of sectors within the food and drink industry for many years. Hiller decanters are not only extremely powerful, but are also based on an optimised procedure for the food and drink industry. The closed system prevents oxidation and guarantees gentle processing. Potential applications include the production of naturally cloudy juices or juice concentrate, purées, smoothies, baby food, wine and edible oils. Hiller has long established itself as the expert in the market here and collaborates with numerous food manufacturers. In the field of olive oil, Hiller has been a world-leading supplier of decanter technology for around 40 years already.

Making of Organic Aronia Juice with a Hiller Decanter

Cost-effective

Our customers profit from low operating costs thanks to the reduced consumption of energy and fresh water, as well as reduced personnel, servicing and maintenance costs. What is more, high throughput rates coupled with maximum yields and a long machine service life ensure maximum cost-effectiveness.

Hiller decanters process up to 30,000 kilograms per hour at the maximum capacity level. Control systems and design-based procedure optimisations ensure smooth-running operation, short cleaning and setup times as well as flexible setting options during ongoing production processes. The cleaning of the machine runs fully automatically via a CIP cleaning system. Depending on the application in question, our decanters are available in different hygiene versions. For the food sector, we currently offer decanters in three sizes, covering a throughput range of approx. 1m³ to up to 25m³.

Hiller Conditioners

Many processes can also be optimised if there is an upstream conditioner with the decanter. This ensures optimal cell breakdown with raw goods. This improves the consistency of the end product and valuable constituents are released.

>> Food & luxury goods brochures

Read how a well-known wine producer optimized his production process with Hiller decanters:
Success Story ROBERTSON WINERY, South Africa

Schematic sectional drawing through a HILLER DecaFood two-phase centrifuge

Olive oil extraction in Spain