DENWEL, spol. s.r.o

Carboblender

High Gravity Brewing is a standard procedure in modern brewing. Precise adjustment of extract or alcohol concentration is performed directly after filtration rather than in the brewhouse. It allows increasing the final output with the existing brew capacity and gives high flexibility in brewing different types of beer.

Designed for fast and accurate dosage of deaerated water, DENWEL provides a fully automated solution for continuous blending ensuring consistent product quality.

Principle

An inline density / sound velocity analyzer continuously monitors the original gravity and alcohol concentration of the standardized beer. Two parallel valves of different size control accurate dosing of deaerated water. Special software algorithm regulates both control valves simultaneously anticipating their required position: the coarse valve acts for the fine valve so that the latter never remains in any end-position but can do fine tuning in its most efficient range. This results in very fast regulation and most precise adjustment in just one process step.

Two electromagnetic flow meters measure the volumes of high gravity beer and deaerated water. If the resulting ratio is not within expected range, the system sends a warning or stops. The dosing of deaerated water is typically situated between buffer tank and beer pump after the filtration. The beer pump reliably blends the two liquids and therefore no additional mixer is necessary. Pressure drop can be avoided and superior sanitary design maintained.

The system is PLC controlled and has automatic modes for continuous blending, carbonation and CIP.

The unit comes assembled on a compact frame, tested to be rapidly put into operation. Proven components guarantee reliability and extended lifetime. The modular layout allows easy integration into production and efficient combination with other process units.

- Accurate adjustment of

• Original Gravity
• Alcohol
• CO2 content

- Efficient CO2 Injector

- Split DAW control valves

- Simple operation

- PLC controlled

Engineering and Automation

Our engineers provide consulting, feasibility studies, project documentation for tenders, basic and detail engineering, technical and technological audits. We deliver automation solutions based on PLC and  SCADA. We manufacture PCC, LCC and pneumatic cabinets.

Our effective project management ensures that the project runs on time and within the budget, meets all service level commitments, keeps the team motivated and is focused on performance and successful realization. Customer satisfaction is our goal.

Technical support

Our comprehensive after sales service provides immediate and effective support as we understand service as key to our success.

• Basic and Detailed Engineering
• Feasibility Studies
• Documentation for Tenders
• Technical and Technological Audits
• Process Automation     

Flash Pasteurization

Pasteurization is a heat treatment with the purpose of improving the microbiological stability of the beverage in order to prolong its shelf life. While reducing the number of harmful microorganisms, uniform and gentle treatment is required to maintain the original taste and appearance of the beverage.

Designed for safe and reliable product treatment, DENWEL provides a fully automated solution ensuring consistent pasteurization quality.

Principle

The cold beer is entering the regenerative zone of the plate heat exchanger and is gently pre-heated by the already pasteurized product. In the heating zone, the beer is then heated up to the request pasteurization temperature and held in the holding tube during the requested pasteurization time. The pasteurized beer is then cooled down in the regenerative zone, and if required cooled in the cooling zone to the requested filling temperature. The regenerative zone counts up to 95% of the heating and cooling demand and makes the system run at most economical costs.

A frequency controlled pump at the inlet of the heat exchangers regulates the flow, while a second pump between the regenerative and the heating zone raises the pressure up to 14 bar in order to keep the CO2 into solution. A backpressure valve at the outlet of the heat exchanger and a pressurized buffer tank make sure that constant pressure is maintained in the system and no CO2 is lost.

The unit comes assembled on a compact frame, tested to be rapidly put into operation. Proven components guarantee reliability and extended lifetime.

• Gentle and uniform treatment
• Exact control of Pasteurization Units (PU)
• Heat regeneration up to 95%
• Broad capacity range
• Sanitary design
• PLC controlled

Nitrogenation

When added to beer, Nitrogen creates creamy and fine foam head with small bubble size; it improves the foam stability and softens the beer palate.  While traditionally Nitrogenation was applied on ales and stouts, the same process is nowadays successfully used for the classical lagers treating. Nitrogen increases beer foam stability of lagers up to 30 seconds. Due to its low solubility, nitrogen consumption is very low. Consistent and accurate Nitrogen will determine appearance and quality of the final product.

DENWEL provides fully automated solutions for fast and accurate dosing and dissolution of Nitrogen but also for simultaneous injection of N2 and CO2 with balanced pressure control to retain both gases into solution

Principle

Nitrogen is dissolved into beer using membrane contactor. The internal fibres form a large contact area between gas and liquid ensuring instant and efficient dissolution.

The Nitrogenation is typically installed between two BBTs. The centrifugal pump transfers beer from the first tank into the unit, where its pressure, temperature and flow are indicated. The outlet valve is used to set up required beer pressure and flow. Nitrogen pressure can be adjusted using pressure regulator and determines final Nitrogen concentration in beer. Nitrogenised beer is pushed to the second tank.

The unit comes assembled on a compact frame, tested to be rapidly put into operation. Proven components guarantee reliability and extended lifetime. The modular layout allows easy integration into production and efficient combination with other process units.

• Creamy head and avalanche effect
• Great foam stability
• Wide dosing range
• Instant dissolution

Water Deaeration

Deaerated water is used in the brewing industry for flushing filters, centrifuges, pipes, tanks etc. When used to adjust alcohol concentration or original gravity after filtration, residual oxygen concentration of the deaerated water is critical as it directly influences the quality and shelf life of the final product.

Designed for most efficient deaeration of water, DENWEL provides a fully automated solution able to economically achieve oxygen levels below 10 ppb.

Principle

The deaeration column is filled with high efficient structured packing. Its large internal surface ensures a maximal contact area between gas and liquid.  Water is homogenously distributed on the top and CO2 is injected at the bottom of the column. While the water rinses downwards through the packing, the CO2 rises in counter current stripping the Oxygen out to concentrations as low as 10 ppb. A drive controlled pump maintains the level in the column and forwards the deaerated water into a buffer tank or point of use.

This technology is distinguished by high efficiency and reliability and consumes just a fraction of energy compared to other methods.

The unit can be extended with inline Oxygen Analyzer, Cooling, Pre-Carbonation, UV Sterilisation, and integration of a storage tank.

• Efficient, safe, approved
• Final Oxygen down to 10 ppb
• No vacuum required
• Low CO2 consumption
• Simple operation
• No maintenance