Process sterilizer

steamheatrotary

Overview
The sterilization retort is an industrial food sterilizer designed to process sealed products under controlled temperature and pressure. The retort executes programmed cycles of heating, holding and cooling with monitored temperature and pressure to ensure repeatable thermal sterilization while protecting package integrity and product quality.

Suitable packaging formats

• Retort pouches
• Cans
• Glass jars
• Bottles
• Trays and other heat-resistant containers

Typical retort sterilization process
Loading → Heating → Sterilization holding → Cooling → Pressure release → Unloading. Temperature, pressure and holding time are determined by product type, package geometry and validated thermal process. For low-acid foods processing commonly targets ~121°C.

Two heating options

• Electric heating (electric elements)
• Steam or gas heating (factory-configurable)

Food products suitable for sterilization retort

• Meat, fish, pet food, sauces, soups, vegetables, ready meals
• Packaging formats: retort pouch, can, glass jar, tray, bottle

Technical parameters of food retort

• Model 500×800 — Power 48 kW; Voltage 380 V; Capacity 40 kg; Trays/Trolleys 2/1; Tray size 320×800×150 mm
• Model 700×1200 — Power 60 kW; Voltage 380 V; Capacity 120 kg; Trays/Trolleys 3/1; Tray size 450×1200×150 mm
• Model 800×1500 — Power 60 kW; Voltage 380 V; Capacity 150 kg; Trays/Trolleys 3/1; Tray size 600×1500×150 mm
• Model 900×1800 — Power 90 kW; Voltage 380 V; Capacity 550 kg / 250 kg; Trays/Trolleys 8/2; Tray size 650×900×150 mm
• Model 1000×2200 — Power 90/120 kW; Voltage 380 V; Capacity 630 kg; Trays/Trolleys 12/3; Tray size 1100×650×160 mm
• Model 1200×3600 — Power 120 kW / Steam; Voltage 380 V; Capacity 1000 kg; Trays/Trolleys 20/4; Tray size 800×900×160 mm

Types of retort sterilizers (comparison)

• Water Spray Retort — Heating medium: hot water spray; Product movement: static; Best for: pouches, trays, cans, bottles; Main advantage: good temperature uniformity with low water volume
• Water Immersion Retort — Heating medium: full hot-water immersion; Product movement: static; Best for: pouches, cans, jars; Main advantage: excellent heat transfer and gentle processing
• Rotary Retort — Heating medium: water or steam-water; Product movement: rotating; Best for: cans, bottles, pouches; Main advantage: faster heat penetration for some products
• Pilot Retort — Heating medium: depends on configuration; Product movement: usually static or small-scale; Best for: R&D and testing; Main advantage: small batch validation before commercial production
• Steam-Air Retort — Heating medium: steam with compressed air; Product movement: static; Best for: pouches and trays; Main advantage: precise pressure control for flexible packaging
• Shaking Retort — Heating medium: water spray or steam-water; Product movement: shaking/reciprocating; Best for: viscous foods and ready meals; Main advantage: accelerates heat penetration and mixing

Notes
Retort selection depends on product characteristics, package geometry and production scale. Pressurized sterilization and pressurized cooling protect flexible packages from deformation or rupture during high-temperature processing.

Technical specifications

• Typical target temperature for low-acid foods: ~121°C (parameters validated per product)
• Heating options: electric heating or gas/steam heating configurable to factory energy supply
• Available models: see model list above with example parameters
• Process control: monitored temperature and pressure throughout cycle to ensure repeatability and package protection
• Suitable applications: meat, fish, sauces, soups, vegetables, pet food, ready meals