Aseptic Surge Tank for Food Processing

Product Specifications

Technical details and manufacturing context for Aseptic Surge Tank

Definition

The Aseptic Surge Tank is a component used in food manufacturing, specifically within an integrated aseptic fruit and vegetable processing line. It serves as a sterile buffer between processing units, temporarily storing pasteurized or sterilized fruit/vegetable purees, juices, or pieces under aseptic conditions. These conditions are maintained via sterile air or inert gas overlay and Clean-in-Place (CIP) and Sterilize-in-Place (SIP) systems. The tank accommodates variations in production flow, ensuring continuous operation and preventing product contamination during transfer to filling or packaging equipment.

Constructed from Stainless Steel 316L, the tank is designed for hygienic processing with an internal surface roughness of ≤0.4 μm (ISO 4287). It operates at a working pressure of 0.2–0.5 MPa (GB/T 150) and a design temperature of 121–150°C. The tank's capacity ranges from 1000 to 20000 liters, with insulation thickness of 50–80 mm to minimize heat loss. The footprint varies from 1200–3000 mm in diameter and 2000–6000 mm in height, and the weight ranges from 500 to 3000 kg. Electrical power requirements are 2–10 kW at 380 V ±10% (IEC 60038), with an IP rating of IP54–IP65 (IEC 60529). The leak rate is ≤0.1 Pa·m³/s (ISO 15848).

Selection of the tank depends on batch size, flow rate, and site clearance. Verification questions should address the specific capacity, pressure rating, and compliance with relevant standards. Maintenance signals include pressure drops, temperature deviations, or increased leak rates, indicating potential seal or integrity issues. Failure boundaries include loss of aseptic integrity, which could lead to product contamination. The tank is not a manufacturer or seller; it is a directory listing. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

Processed product enters the tank under aseptic conditions. The tank maintains sterility via positive pressure of sterile air or inert gas and temperature control. It acts as a buffer: when upstream output exceeds downstream intake, product accumulates; when downstream demand increases, stored product is drawn. Level sensors control inlet and outlet valves to manage inventory. The tank is designed for Clean-in-Place (CIP) and Sterilize-in-Place (SIP) cycles to maintain aseptic integrity.

Common Materials

Stainless Steel 316L

Technical Parameters

Parameter	Typical range	Notes & selection driver
Capacity	1000–20000 L	Select based on batch size and flow rate
Working Pressure	0.2–0.5 MPa	Pressure rating for aseptic conditionsGB/T 150
Design Temperature	121–150 °C	For SIP sterilization
Surface Roughness (Internal)	≤0.4 μm	Ra value for hygienic finishISO 4287
Material	316L	Stainless steel for corrosion resistanceASTM A240
Insulation Thickness	50–80 mm	Minimize heat loss during holding
Weight	500–3000 kg	Depends on capacity and design
Footprint (Diameter × Height)	1200–3000 × 2000–6000 mm	Check site clearance
Sterilization Temperature	121–134 °C	For SIP cycles
Sterilization Pressure	0.2–0.3 MPa	Steam pressure during SIP
Leak Rate	≤0.1 Pa·m³/s	Ensure aseptic integrityISO 15848
Electrical Power	2–10 kW	For agitator and controls
Voltage	380 ±10% V	Three-phase power supplyIEC 60038
IP Rating	IP54–IP65	Protection against dust and water jetsIEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Tank Shell Part
Main containment vessel with polished interior for cleanability

Material: Stainless Steel 316L
Sterile Air Filter
Filters air/gas entering tank to maintain aseptic conditions

Material: PTFE membrane
Level Sensor
Measures product level to control inlet/outlet valves

Material: Stainless Steel with FDA-approved seals
Inlet and Outlet Valves
Let the tank actually buffer: level control opens and closes them.
Temperature Control System
Holds the product temperature while it waits in the tank.

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Frequently Asked Questions

What is the primary function of an aseptic surge tank?

It temporarily stores processed fruit/vegetable products under aseptic conditions to balance flow rates between processing stages, ensuring continuous operation and preventing contamination.

What materials are used in the construction?

The tank is made of Stainless Steel 316L, which provides corrosion resistance and is suitable for hygienic processing.

What are the typical capacity and pressure ranges?

Capacity ranges from 1000 to 20000 liters, and working pressure is 0.2–0.5 MPa, as per GB/T 150. These values should be confirmed for specific models.

How is sterility maintained?

Sterility is maintained via positive pressure of sterile air or inert gas, temperature control, and CIP/SIP cycles. The tank's leak rate is ≤0.1 Pa·m³/s (ISO 15848).

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Full vacuum to 6 bar (g)
flow rate:	Up to 50 m³/h (depending on size)
temperature:	20°C to 140°C (sterilization up to 150°C)
slurry concentration:	Up to 40% solids by weight

Aseptic Surge Tank

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards