With our KKT type mobile dry air dryer, you can dry hygroscopic polymers right next to your processing machine. Depending on the model, from 55 m³ to 100 m³ of dehumidified air pass through the drying container per hour and the moisture of the granulates is absorbed.

The saturated return air flows over two alternate drying agent containers where it is dehumidified again. This way, deeply dried air is produced with a dew point of about -35°C. It corresponds to a value of 0.19 g H₂O per 1 m³ of dry air.

The current KKT models are available with a newly structured control unit:

• Comfortable touch screen menu navigation
• Drying programs adapted to the safe drying
• Industrie 4.0 Vorbereitung durch Siemens S7 Kompatibilität
• Materialdatenbank
• Time switch control for specifying the drying times

Also available upon request:

• Patented KOCH ECO control system
• Dew point monitoring with data recording
• Material supply system to fill more drying containers or the processing machine

There are three suitable programs to choose from for optimum polymer drying:

• The ECO energy saving program saves up to 40% energy. It will pay off if a rarely dried material is taken.
• If it has to go fast, you can dry high throughputs of consistent quality in the high-speed program.
• The basic program is tailored to your daily standard production.

As required, our complementary dryers with different drying containers are available. Large containers are mounted on a mobile rack.

Mobile KKT dry air dryer series from Koch-Technik – quiet and reliable. KKT 100S on the left, KKT55 with a container behind the unit on the right.

EKO Plastic Pellet dryer: Drying quality at the highest level

The EKO dry air dryer series is our proven dry air technology wrapped in a contemporary design and with a high level of energy efficiency.

Combined with the dew point and KOCH ECO system control as well as frequency-controlled blowers, they can save up to 50% energy during the pellet drying.

We offer the dry air dryers in the mobile variants EKO 110, EKO 200 and EKO 300 and also EKO 500 and EKO 800 stationary units with and without frequency-controlled blowers.

The standard version of the EKO system is controlled via a functional diagram, which provides information about the operating condition at any time. If a dew point and ECO control system is additionally integrated, it is recommended that the control system be changed with a touch panel control unit. In accordance with our modular principle, various drying containers can be integrated in the EKO system.

Stationary KOCH granule dryer type EKO 800: The drying containers are recessed into the floor of a mezzanine.

Characteristics of the EKO type:

• Visually appealing design
• Proven and well-engineered KOCH dry air technology for drying plastic pellets
• 110–800 m³/h dry air, depending on the version
• Heat exchanger technology for the highest energy utilization
• Maximum energy efficiency combined with an optional KOCH ECO control system
• Drying containers (also called drying hopper) in various sizes available (integrated up to 200 l)
• Modular design for trouble-free extension of a drying system

KOCH dry air dryer type EKO 300 for plastic pellets with integrated material hoppers for filling the drying containers.

Functional diagram

Clear display of all drying cycles

All our type CKT and type EKO plastic pellet dryers are equipped with the functional diagram in the basic version. This diagram that is a simplified illustration of the drying cycle allows you to monitor the pellet drying at a glance. This is an easy-view solution.

The KOCH-TECHNIK EKO type pellet dryer in the basic version with a functional diagram

Dryer control via touch display

The control extension for the CKT and EKO dryer

We offer the touch panel control as a control extension for all dry CKT and EKO type air driers. This control system combines all basic and optional control components that can be monitored and operated via the large touch display:

• Touch-sensitive 10-inch display
• Display and temperature control of the drying circuits
• Reduction mode
• Throughput detection for each drying container and an alarm message if the throughput is exceeded
• Multiple language selection
• Password protection safety system
• Material database (series from the 2017 version)

Optional components:

• Dew point monitoring, control and recording (series from CKT 300 and EKO 300)
• Automatic load matching
• KOCH ECO control system (energy-efficient flaps)
• Control for an internal material conveying system
• Interfaces and data bus for visualization software
• Upgrade of older KOCH drying systems possible

Upon request, we also enable you to monitor the drying system with the app. This possibility provides priceless added value especially for drying systems on platforms (mezzanines).

KOCH dew point control

Dew point controlled plastic pellet drying saves up to 40% energy

For dry air drying without dew point control, the desiccant containers alternate in fixed cycles during dehumidification and regeneration. The flow rates and the moisture content of the material to be dried are not taken into account.

On the other hand, KOCH dry air dryers with dew point control work depending on the dew point and therefore are considerably more energy-saving. As soon as a desiccant reaches the dew point limit of -30 °C, it is switched to a fresh, regenerated desiccant container. It means that the drying process adapts to the material: when the pellets are very moist, the switching cycles are shorter and when the moisture content is low, they are correspondingly longer.

The advantage of the dew point-controlled drying is obvious: High energy savings and the always consistent quality of the final product.

Patented KOCH ECO control system

Our patented control system for material-friendly and energy saving pellet drying

Our ECO control system guarantees that hygroscopic materials such as PA, PC, LCP, POM, etc. are not overdried:
During the dry air-drying process, the material in the storage containers is dried to the “residual moisture required for the processing”. If no or little material is taken from a container, further drying may lead to overdrying and damaging the material.
The KOCH ECO control system prevents that!
If the temperatures in the upper area of the container reach a defined value, the ECO control system automatically removes such a container from the drying cycle. Once the pellets are removed or the dwell time is exceeded, the container is joined again.

Characteristics:

• Your material is not overdried.
• You always have pre-dried pellets available.
• You save energy – in a significant extent.

Other advantageous properties:

• Control of the required air quantity for each individual drying container
• Control of the defined air quantity – independently of the filling quantity and shape of material
• The exactly required amount of dry air flows always through the container.
• Optionally with automatic load adjustment