Water-Free High-Capacity Peel Separation: Why Dry Peel Separation Is Showing Up in More Big Potato Plants

Peeling is one of those potato-processing steps that looks “solved” until you run the numbers: yield loss that quietly adds up, water use you end up paying for twice (incoming and wastewater), and cleaning time that steals throughput when your order book is full. That is why dry peel separation is getting a second look, especially in large plants. TOMRA’s DPS-16 sits right in that lane: a high-throughput, water-free peel separation unit built to pair with steam peeling lines, aiming for higher yield, lower water use, easier cleaning, and fewer bottlenecks when you push volume.

What DPS-16 is, in plain processing terms

The DPS-16 is a dry peel separator designed to sit after steam peeling. Instead of using water to carry peel away, it uses a perforated drum to gently separate peel from product in a fully dry process. The headline message is capacity: TOMRA positions it as a market-leading unit capable of handling up to 70 tons of potatoes per hour, built for high-volume processors who are tired of peel separation being the step that dictates the line speed.

It is also positioned as flexible, not only for potatoes but for a wider set of vegetables, with messaging that includes variable sizes and products like carrots. That matters because large processors increasingly want equipment that can support more than one SKU family without turning changeovers into a long, wet headache.

Why “dry peel separation” is trending again

Dry peel separation is not a brand-new concept. What is changing is the pressure around it. Water is getting more expensive, wastewater limits are tighter in many regions, and sanitation expectations keep climbing. If your peel handling relies on a lot of water, you are not just consuming water. You are also adding load to wastewater treatment, making cleaning more involved, and potentially creating more mess around peel conveyance.

TOMRA’s own steam peeling write-ups describe dry peel separation as a way to avoid using water and brushes to remove peeled skin, using a centrifugal-style separation approach as part of a broader “peeling module” philosophy. The pitch is straightforward: less water, less complexity, less waste, and better process control when the whole peeling section is treated like an integrated system rather than a collection of standalone machines.

The four practical wins large plants are chasing

1) Yield protection without slowing the line

Everyone says “higher yield.” The real question is where you lose it. In steam peeling, the challenge is always the tradeoff between peel removal and flesh loss. Peel separation can add another layer of loss if it is aggressive or sloppy. TOMRA positions the DPS concept as delivering strong peel removal with reduced flesh loss, and in the DPS-16 launch coverage it is explicitly framed as “no compromise on yield” while scaling throughput. In high-volume operations, even small improvements here matter because peel loss is forever, and it hits you every hour.

2) Lower water use and less wastewater pain

Water-free peel separation is the obvious headline, but the operational value is broader. Less water in peel handling can mean less effluent volume and, depending on your setup, less treatment load. TOMRA’s peeling-line materials spell out that dry peel separation can reduce water usage and water treatment needs, and position “zero water usage” in the separation step as a core benefit. If you are operating in a region where water and discharge are both expensive, this is not a “nice sustainability story.” It is a cost story with a payback model.

3) Cleaning that does not feel like a project

At high capacity, cleaning time is a throughput variable. The DPS-16 messaging leans heavily into easier access and hygiene: wide access doors for cleaning, stainless surfaces, and a design that is described as easier to maintain. The landing page tied to the DPS-16 launch also calls out pneumatically operated gullwing doors, specifically to make access for cleaning and maintenance simpler and safer. These details sound minor until you run a plant that cleans daily and swaps crews. Small access improvements can turn into real uptime.

4) Throughput headroom, not just peak capacity

High-capacity equipment only helps if it integrates without drama. The DPS-16 launch coverage emphasizes that it can be integrated into existing steam peeling lines with minimal downtime. That matters because many large processors do not want a full rip-and-replace project. They want a targeted de-bottlenecking move that lets them push more volume through the same facility footprint.

Where DPS-16 fits in a modern peeling section

Think of it as the dry “peel exit” step after steam. Steam loosens the skin, then the separator removes and evacuates peel without turning it into a water-transport problem. TOMRA’s broader peeling-line description places DPS alongside other modules like brushing and washing, and frames the line as configurable depending on raw material, end product, and the performance target you care about most (yield, peel quality, throughput, or some mix).

One detail worth noting: TOMRA’s older peeling-line brochure language treats dry peel separation as a choice between a drum separator approach and a high-speed dry brush, depending on how challenging the product is. The DPS-16 is clearly positioned on the drum-based, high-capacity end of that spectrum, aiming to do peel separation without the extra water and without relying on brushes as the primary mechanism.

What to ask before you buy it

Dry separation is attractive, but the fit depends on your line and your peel quality targets. If you are evaluating DPS-16 style systems, the questions that actually matter tend to be operational:

- What does “up to 70 tons per hour” look like on your real product mix and size distribution, not in a brochure scenario?

- How does the unit behave on tougher peel conditions (variety swings, storage effects, skin set changes), and what are the adjustment points operators will actually use?

- What is the cleaning routine in practice, including access, lockout steps, and how much wet cleaning is still required around the unit?

- How is peel waste conveyed downstream in a dry setup, and what changes (if any) you need in waste handling, pumps, or conveyors?

- What is the integration scope: footprint, connections, controls, and the realistic downtime window?

These are not trick questions. They are the ones that decide whether “dry peel separation” becomes a stable part of your line or another piece of equipment operators tolerate.

The bigger trend: peeling is becoming an efficiency system, not a single machine choice

The DPS-16 launch is interesting partly because it sits inside a wider shift. Major processors are treating peeling as an optimization module: steam control, peel separation, washing, and inspection working as one unit, with the goal of reducing resource use while protecting yield. TOMRA’s own narrative around steam peeling evolution puts dry peel separation right after the energy-optimized peeler in that chain.

For large processors, this is the practical version of sustainability: fewer liters, fewer kilograms lost as waste, fewer hours lost to cleaning and maintenance, and more predictable throughput. The DPS-16 is a product spotlight, but the story is bigger. Dry peel separation is turning into a “default option” for plants that want to scale without scaling water and cleaning problems along with it.