Desiccants as part of the process

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Desiccants are applicable almost universally. In addition to containers, transport, packaging or storage, they are also used as part of the production process in many companies. ThoMar OHG offers you desiccants in various formats and chemical compositions. Thus Silica Gel for standard requirements can be ordered directly from our shop. However, if required, it is also available in particularly fine grinding grades or high purity grades. Have you not found yet what you are looking for on our website for your special application? Just give us a call and tell us your ideas where and how you want to use desiccants. We will find a solution together with you!

Wind power / hydropower

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Drying Plants

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Consumer Goods

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Flower Drying

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Floor Lights

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Bridge Construction

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Intermediate Bulk Container

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Desiccant Plugs

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Protecting wind and water power stations from moisture

Especially in the offshore, onshore and hydropower sectors, the climatic conditions due to humidity are extreme not only during plant operation, but even before commissioning. The temperature fluctuations between day and night can be enough for the humidity to repeatedly exceed a critical level.

ThoMar OHG has already gained experience with customers from the wind power sector. Damage to sensitive components caused by high humidity is not uncommon here and must be avoided at all costs. A simple and effective solution to this problem is the use of a desiccant that is suitable for the respective application.

Even before commissioning, desiccants protect wind turbines
from moisture damage.

Examples for dehumidification

With our wide range of desiccants, we can cover almost all areas and process steps for your needs:

Preservation of packaged parts with desiccant bags according to DIN 55473
Drying offshore wind turbines until commissioning with SeaDry - our high-performance desiccant on a salt-starch basis - effectively protects against moisture even during transport and (interim) storage
Silica gel orange for operating transformers in wind and hydroelectric power plants - ensures filtered and dry air supply in the plants / generators

Silica gel is used for running transformers of hydropower plants.

Use of SIlica Gel in Drying Plants

Particularly in the case of highly hygroscopic powdery products, such as food supplements, it is important to maintain a constant low level of humidity during the manufacturing process. If possible, the ambient air within the closed filling area of the machines should contain no more water molecules. Here, manufacturers use the method of sorptive air drying. Silicagel is regarded here as a highly effective technical adsorbent. Due to its molecular structure, it binds large amounts of moisture and is regenerable. This means that it also releases moisture again when dried with heat (desorption).

Silica Gel is used in industrial drying plants.

Unwanted Product Smell caused by Condensation

During the production of spectacle cleaning sets, our customer was faced with a risk of condensation within the packaging, which is also a product component, due to the production process. The consequences were a unwanted smell of the enclosed textile cloth and a clammy feel of the paper operating instructions. Since the addition of a Desi Dry silica gel packets to the plastic container serving as packaging directly during the production process, condensation no longer occurs. Odour and feel of all product components again meet the high quality requirements of our customer.

Silica gel packets prevent musty product smell.

Flower Drying with Silica Gel

Especially flowers with colourful blooms are dried quickly and colourfast by a ThoMar customer with the help of silica gel. Silica gel, consisting of silicon dioxide, extracts water from the plant and thus ensures that bridal bouquets, for example, remain beautiful for a long time to come.

With the help of silica gel bouquets can be preserved.

Condensation in Floor Lights

Floodlights permanently installed in the ground - e.g. for illuminating pathways, squares, façades or stages - are functional and visually appealing, but must function reliably under harsh environmental conditions. They are not only exposed to changing weather conditions, but also to large temperature differences between the operating and resting phases.

To avoid condensation at this point, desiccants (e.g. DesiDry or BoxDryy® from the ThoMar range) can be used to absorb the excess humidity.

The luminaire housing heats up considerably during operation. A physical effect occurs when switching off and then cooling down: A vacuum is created inside the luminaire. This causes moist ambient air to be sucked in through seals or micro-cracks. This moisture condenses on the cold inside of the housing the next time the temperature drops - an often underestimated problem.

Risks due to condensation:

Condensation in ground spotlights can have serious consequences.

Corrosion of electrical contacts, circuit boards and reflectors

Short circuits or functional failures due to moisture bridges

Impaired light output due to fogged interior surfaces

Reduced service life of the light with repeated exposure to moisture

Even with high-quality, IP-protected luminaires, it is almost impossible to completely prevent the ingress of humidity over time - especially with the frequent temperature cycles that are commonplace in outdoor areas.

Solution: Use of high-performance desiccants

To reliably prevent the formation of condensation inside the lights, ThoMar recommends the high-performance desiccant BoxDryy®. With a lower moisture development, the DesiDry silica gel packets can be used.

This is placed directly inside the housing and immediately absorbs the moisture drawn in when the luminaire cools down. This keeps the humidity inside permanently below the critical threshold value for condensation - the dew point. Installation is straightforward, even at a later date, and can be easily integrated into existing maintenance cycles.

The use of these desiccants ensures permanently clear illuminated surfaces, protects electronic components from corrosion or short circuits and extends the service life of the entire luminaire.

Silica gel bags prevent condensation in floor spotlights.

Use of desiccants in bridge piers

Modern bridge structures such as the Öresund Bridge between Denmark and Sweden or similar structures that span bodies of water are subject to extreme climatic and mechanical loads. The situation is particularly critical in the reinforced concrete piers, which have to support the structure for many decades.

For structural reasons, there are cavities or inspection shafts in these piers, often several metres below the water level. Due to their location and surroundings, these cavities are particularly susceptible to:

Condensation due to temperature differences

Ingress of moisture in the event of leaks

Even if these areas are largely structurally sealed, the humidity inside increases over time. This poses a considerable risk, particularly for:

Corrosion of installed steel beams or cables

Mould formation or microbial growth

Impairment of sensors, maintenance equipment or power supplies

Solution: Regulating the humidity with desiccants

To prevent such damage, ThoMar OHG relies on a simple but effective method: the targeted placement of desiccants in vulnerable cavities. These reliably remove moisture from the trapped air over a longer period of time and ensure a permanently stable indoor climate - without any power-operated systems or complex technology.

A practical example is the Öresund Bridge, whose underground pier areas are regularly equipped with desiccants. Depending on the amount of water and application, ThoMar offers for example, the desiccant SeaDry for containers and big places or the CertiDry desiccant bag. This prevents corrosion, moisture problems and faults in technical equipment. The application can be easily integrated into maintenance plans, protects the building fabric in the long term and makes a significant contribution to the operational safety of such infrastructure structures.

Desiccant bags are used at the base of the bridge piers.

Drying of Intermediate Bulk Containers

When transporting liquids or fluid substances, e.g. foodstuff, cosmetics, and chemicals, people use so-called IBC (intermediate bulk containers). After cleaning and before refilling the IBC, they need to eliminate the residual damp within the container. The drying process can be accelerated by desiccants.

Example of use intermediate buk container

Drying of IBCs through desiccants.

Desiccant Plugs for Tablet Tubes

In order to ensure a constant quality of the products concerned even at changing temperatures and humidity levels, manufacturers of pharmaceuticals and foodstuffs use so-called desiccant plugs. These are used to seal tablet tubes, for example. ThoMar OHG supplies an international manufacturer of packaging and packaging components for food products with ultra-fine, microporous silica gel, which is then inserted into the lids of effervescent tablet packaging.

Silica gel in the packaging lids keeps effervescent tablets dry.