HETA HSA automatic filter system

A number of industries use seawater or surface water for the cooling process. An unwanted side effect is that contaminantion through minerals or organic materials in the water can lead to serious malfunctions in the cooling process. Consequently, there is a demand for a reliable and cost-effective means of thoroughly cleaning the process water.

This has motivated HETA Verfahrenstechnik GmbH, which is part of the PACO Group, to develop the automatic HETA HSA filter system. Continuous operation is ensured by its self-cleaning capability. HSA filter system applications range from the chemical industry through petrochemicals or power stations to large shipyards and sewage treatment facilities.

Cleantech made by PACO

Cleantech – high tech that protects the environment and health – is considered to be one of the most promising markets for the future. PACO has been working in this extremely challenging sector for a number of years and, together with its customers, keeps on developing innovative solutions. PACO filters are, for instance, used to purify flue gases in waste incineration plants, filter water in sewage plants and rainwater harvesting systems as well as for air conditioning and mining applications. PACO special cloths are being successfully used as diesel soot filters.

PACO filter cloths ensure that the efficiency of oil and gas production is improved and high precision PACO screen printing cloths play an important part in photovoltaic development. The demands of our customers for cleantech solutions continues to grow. And with that, PACO’s proficiency in this extremely important area of activity. 

Filter technology

Filtration is a fundamental and versatile process that is just as much at home in a production process as it is in environmental engineering or a laboratory. PACO supplies specifically developed filter media for a variety of applications – various types of flat filter, fine filters up to 3 µ  filtering accuracy, filter candles, (pressure) filter baskets and special filters made of metal wire cloth, sintered metal fibre and mesh laminates.

In addition, PACO develops and produces complete filtering and screening systems including all of the necessary system elements.

A number of PACO filter innovations have now become proven industrial standards.

Fine and ultra-fine screening

The finer that the granules to be screened are, the higher the chances of a fine sieve mesh becoming clogged. PACO produces ultra-fine sieve meshes that can separate particles of 25 µ in industrial applications and even 15 µ in laboratory environments. This provides a seamless transition between the technologies of screening and filtration.

The problem of ultra-fine screen meshes becoming clogged is solved by PACO with the PACO DSS Vibration Frame Systems. This has special excitation springs that quickly accelerate the sieve mesh to prevent clogging and blinding and thereby ensure increased screening performance.

Filtration, ultra-pure – with PACOSLOT wedge wire screens

In Germany, the purity law is generally associated with beer brewing, although it equally applies to a number of other fluids used in industrial and technical applications. That is why PACOSLOT wedge wire screens are not only used in breweries, but also in a wide range of other processes such as coolant filtration or as resin traps or nozzle filters etc..

PACOSLOT wedge wire screens are not only characterized by their perfect filtration results, but also through the extreme purity of the technology used to manufacture them. They have a spirally running surface structure with axially arranged supporting sections at the cross-over points. As these joints are welded without the use of any additional materials, they are extremely pure.

Synthetic fibre production, PACO spin pack filter

The heart of any synthetic fibre production is the spinneret with its various components, one of which is the spin pack filter. This decisively influences the quality of the fibres produced and the cost-effectiveness of the production process. PACO has developed a new generation of spin pack filters with an increased filter area that enables a higher throughput volume and longer lifetimes.

Important to this are advances in pleating technology used in the filter cloth. Additionally, the design of the filter edge has been optimized so that the risk of leaks can be further minimized. The new PACO spin pack filters can be tailored as required for any production process with respect to parameters such as flow rate, viscosity, pressure loss and lifetime.

Micro fibre production

A number of modern functional textiles made of fleece, e.g. for protection against low temperatures as well as for work, sports and casual clothing owe their high performance reputation to super fine micro fibres. Until recently, the standard measurement for micro fibres was “1 dtex“. This indicated that a 10 km long (Polyester) thread was only allowed to weigh 1 gram.

PACO has developed a spin pack sieve that enables 0.25 dtex super micro filament yarns to be produced! As melt spinning demands extremely high precision and reliability, synthetic fibre manufacturers around the World like to rely on PACO pre-polymer filter candles, product filters and spin-pack filters.

Spin packs for melt filtration

When economically producing high quality synthetic fibres, it is extremely important that foreign particles do not block the extremely fine spinnerets. To ensure this, PACO has developed special filters based on PACO RDW or RDTW dutch weaves. They cover a filtering range of 40 – 500 µ.

PACOs range covers the customary methods of producing most common synthetics fibres from polyester to polyamide with wide viscosity range. Products include stand-alone filters, filter packs for interchangeable screening systems and extruders as well as coils of cloth for continuously operating filter systems such as “AUTOSCREEN“.