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13,500 LPH Juice Processing Line: How a Continuous Design Works from Syrup to Filling
Why batch timing, buffer tanks and automatic CIP decide whether a juice processing line really runs without stopping
A juice processing line is only as continuous as its slowest step. If the steriliser and the aseptic filler keep stopping and restarting, product is wasted and cleaning time grows. This guide walks through the design logic of a 13,500 LPH juice processing plant, from sugar syrup to aseptic filling, and shows how blending tanks, buffer storage, flow plates and an automatic CIP system keep the beverage processing line running. The figures are a representative design basis, not a quotation. For our wider work in this sector, see Goose food and beverage automation.
The juice processing line at a glance
Capacity: 13,500 LPH at the homogeniser and the steriliser
Output: about 270 KL a day at 20 hours of production, with the balance of the day for full line CIP
Products: juice, nectar and ready-to-serve beverages with pulp and pectin, recipe-based
Blending: th
ree 15 KL tanks in rotation
Buffer: two 15 KL ready beverage tanks
Sterilisation: tubular steriliser, 95–105 °C with a 45-second hold
CIP: a three-tank automatic CIP system with two circuits, plus a dedicated MiniCIP for the filler
Automation: Siemens PLC and HMI with recipe and batch reports, as part of our automation solutions
Figure 1: Process flow, from sugar bags to the aseptic filler.
Why a juice processing line needs three blending tanks
At 13,500 L an hour, one blend batch of 13,500 L lasts exactly 60 minutes. The next batch must be ready the moment the last one runs out. The question is how long a batch takes to prepare.
Blend cycle step (per tank) | Time (minutes) |
Charge water (about 10 KL) and syrup (about 2.2 KL) in parallel | 20–25 |
Add pulp, pectin and other ingredients | 10 |
Mix | 15 |
QC check and release (Brix, pH, acidity) | 15–20 |
Total per batch | 60–70 |
A batch takes 60–70 minutes to prepare but only 60 minutes to process, so two blending tanks are not enough. With three blending tanks in rotation, one feeds the line, one is mixing or in QC, and one is being cleaned or charged. Each tank gets 120 minutes to be cleaned, charged, mixed and released before its next turn.
Syrup preparation and storage for a juice processing plant
In this juice processing line, simple syrup is prepared at 60–65 °Brix in 5 KL batches. Sugar is fed from bags, the syrup is held at about 85 °C, filtered through a precoated filter press, cooled and stored in a 15 KL tank. At typical sugar levels of 10–12% in the final beverage, the line needs about 1.8–2.2 KL of syrup an hour. A 15 KL store filled before start-up gives roughly seven hours of buffer, so syrup preparation never has to keep pace with the line minute by minute.
Blending with an automatic batching system
Accurate dosing is central to any juice processing line. An automatic batching system doses syrup, process water, diluted pulp, prepared pectin and other ingredients into the selected blending tank as per recipe. Flowmeters, an automated valve manifold and wrong-tank prevention keep each batch accurate and traceable. Not sure which meter suits your fluid? Read our guide to choosing a flow meter for food and dairy plants. Pulp and pectin have their own dump and preparation tanks, so ingredients are ready when the batch calls for them.
Juice homogeniser and ready beverage buffer tanks
Released batches go through a flow plate to a two-stage juice homogeniser with a 250 bar design pressure. No separate balance tank or booster pump is needed, because the blend transfer pump delivers the required inlet pressure. A cooling water recovery tank and a small chiller keep the juice homogeniser seals and pistons cool.
The homogenised beverage then fills two ready beverage tanks. One is filled while the other feeds the steriliser, which gives about 60 minutes of buffer. If something stops upstream, the steriliser is protected.
Tubular steriliser and aseptic filling
A tubular steriliser suits pulpy juices because of its gasket-free design. The product passes through five stages: regeneration heating, hot water heating to 95–105 °C, a holding tube for 45 seconds, regeneration cooling and cooling to 20–25 °C for cold aseptic filling. Product-to-product regeneration recovers about 85% of the heat or more. Heat losses can hide in any thermal process, as we explain in our guide to pasteuriser losses in dairy plants.
Two details protect the product in the tubular steriliser. An automatic flow diversion valve sends under-temperature product back to the balance tank, and product recirculates to the balance tank whenever the filler stops. We tackled a similar stop-start problem on a dairy plant, described in reducing pasteuriser restart downtime. At the filler interface, a steam barrier on the aseptic product valves, with a temperature sensor to confirm it, supports the sterile connection. Signals such as filler ready, product request and filler CIP request are exchanged by hardwired links or Profinet. For filling-side automation, see our servo rotary filling and capping case study.
Flow plates that prevent mix-ups
Seven flow plates, also called swing bend panels, give a visible break between product and CIP lines. Every port has a proximity switch wired to the PLC, so a step cannot start unless the correct bend is in place. This prevents product and cleaning solution from meeting by mistake.
A three-tank automatic CIP system with two circuits
The automatic CIP system has three 5,000 L tanks: lye, hot water and water recovery. For juice an acid tank is not normally needed, although periodic acid cleaning can be added as an option. Two circuits can run at the same time: one for the syrup section and blending tanks, and one for the homogeniser line, ready beverage tanks and pipelines.
A standard cycle is a pre-rinse with recovered water, lye at 1.5–2% and 75–80 °C, a staged intermediate rinse, hot water sanitisation at 85–90 °C and a final rinse that is collected for the next pre-rinse. Each step is validated for time, temperature, flow and conductivity, and the CIP stops with an alarm if conductivity is detected during the hot water step. The staged rinse follows the same idea as our CIP water saving case study. A separate 1,000 L MiniCIP, split into 500 L of lye and 500 L of hot water, cleans the filling machine. If your existing CIP is manual, see how we handled a CIP system upgrade and digitalisation.
Automation, recipes and batch records
A Siemens PLC with distributed I/O and a 15-inch HMI runs the line. It holds recipes for syrup, blending, sterilisation and CIP, and it records the syrup batch, the blend batch, the steriliser temperature and flow, and the CIP report. Interlocks cover tank level, pump dry-run, flow plate position, the flow diversion valve, the homogeniser permissive and filler readiness. Password levels separate operator, supervisor and engineer access, and alarm history carries a time stamp. A SCADA system and the GOOSE CIPOPTIMA™ monitoring dashboard are available as options. Not sure whether you need SCADA? Read does a small factory need SCADA.
What to settle before sizing a juice processing line
Final sizing of heat exchangers, pumps and utilities depends on the approved recipes, Brix, viscosity, pulp content and the site's utilities. To size a line properly, a plant team usually needs to define:
the product list with recipes
the filler model, pack sizes and CIP interface
the sterilisation temperature and hold time for each product
the site layout and the utility conditions
the operating hours per day and the CIP frequency
Frequently asked questions
How long does one blend batch last on a 13,500 LPH juice processing line?
One 13,500 L batch lasts 60 minutes at 13,500 LPH. Preparing a batch takes 60–70 minutes, which is why three blending tanks run in rotation.
Why use a tubular steriliser for pulpy juice?
Its gasket-free design suits pulpy juices. Product is heated to 95–105 °C, held for 45 seconds and cooled to 20–25 °C for cold aseptic filling.
How is the line cleaned?
A three-tank automatic CIP system with two circuits cleans the syrup, blending, homogeniser and ready beverage sections, and a separate 1,000 L MiniCIP cleans the filler.
Planning a juice processing line?
Talk to Goose Solutions about your recipes, filler and site, or browse our products.
Goose Industrial Solutions is a Siemens Authorised System Integrator specialising in dairy and food processing automation, with 25 automated CIP systems supplied and 100+ CIP systems upgraded from manual to automatic.
Disclaimer: The figures in this article are a representative design basis and are not a quotation. Final sizing depends on recipes, Brix, viscosity, pulp content, filler details and site utilities.
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