CT-C Series
CT-C Hot Air Circulating Oven
Fully enclosed hot-air circulating drying oven with automatic temperature control for general-purpose batch drying.
- Unified under China's RXH industry standard since 1990
- Fully enclosed hot-air circulation system
- Steam, electricity, hot water, or far infrared heat sources
- Interchangeable 460×640×45 mm baking trays
Drying Equipment35-45%
Thermal Efficiency
5
Standard Models
50-300°C
Drying Temperature Range
Specifications
Technical parameters
| Industry Standard Model | CT-C Model | Drying Area (m²) | Trays per Load (m³) | Equipped Power (kW) | Steam Consumption (kg/h) | Heat Dissipation Area (m²) | Temp Difference (°C) | Overall Dimensions W×D×H (mm) | Trays per Car |
|---|---|---|---|---|---|---|---|---|---|
| RXH-7-C | CT-C-O | 50 | 0.55 | 10 | 10 | 3450 | ±2 | 1600×1200×2000 | 1 |
| RXH-14-C | CT-C-I | 100 | 0.55 | 18 | 20 | 3450 | ±2 | 2300×1200×2000 | 2 |
| RXH-27-C | CT-C-II | 200 | 1.1 | 36 | 40 | 6900 | ±2 | 2300×2200×2000 | 4 |
| RXH-41-C | CT-C-III | 300 | 1.65 | 54 | 80 | 10350 | ±2 | 3300×2200×2000 | 6 |
| RXH-54-C | CT-C-IV | 400 | 2.2 | 72 | 100 | 13800 | ±2 | 4460×2200×2000 | 8 |
Heat source options: steam, electricity, far infrared, or steam+electricity combined. Drying temperature: steam 50-130°C (max 140°C); electric/far infrared 50-300°C. Steam pressure: 0.2-0.8 MPa. Baking tray dimensions: 460×640×45 mm.
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View specificationsEngineering Advantages
Built for demanding vacuum drying duty
High Thermal Efficiency
The fully enclosed circulation system raises thermal efficiency from a traditional 3-7% to 35-45%, with maximum efficiency reaching 50%.
Low-Noise Axial Fan
A high-temperature-resistant, low-noise axial fan circulates hot air throughout the oven for consistently quiet operation.
Adjustable Air Distribution
Forced ventilation through adjustable air distribution plates ensures uniform drying across every tray in the load.
Multiple Heat Source Options
Configure the oven for steam, electricity, hot water, far infrared, or a steam-electricity combination to match available site utilities.
Automatic Temperature Control
Automatic temperature control holds drying conditions within ±2°C throughout the cycle for consistent, repeatable results.
Easy Installation and Maintenance
A straightforward mechanical layout and accessible components simplify installation, routine maintenance, and tray changeover.
Interchangeable Trays
Standardized 460×640×45 mm baking trays are interchangeable across the product line, simplifying spares and tray car loading.
Industry Standard Compliant
Model designations align with China's national RXH industry standard, issued by the National Medical Administration in 1990.
Working Principle
The vacuum rake drying cycle
- STEP 01
Load Trays
Material is spread across interchangeable 460×640×45 mm trays and loaded onto the tray car inside the sealed oven chamber.
- STEP 02
Activate Heat Source
The selected heat source, steam, electricity, hot water, or far infrared, brings the chamber up to the set drying temperature.
- STEP 03
Forced Air Circulation
The low-noise axial fan drives hot air through adjustable distribution plates, delivering even airflow across every tray.
- STEP 04
Automatic Temperature Control
The control system holds chamber temperature within ±2°C, adjusting heat input automatically throughout the cycle.
- STEP 05
Hot Air Recirculation
Most process air recirculates within the sealed enclosure rather than venting to atmosphere, sustaining high thermal efficiency.
- STEP 06
Unload Dried Product
Once target moisture is reached, trays are unloaded from the tray car and the dried product is ready for packaging.
Structure Diagram
Inside the CT-C hot air circulating oven

Cutaway view of the CT-C oven showing the tray car loaded with baking trays, adjustable air distribution plates, the low-noise axial circulation fan, and heat source connections.
Key Components
- Circulation Fan
- Air Distribution Plates
- Temperature Control
- Tray Car
Application Industries
Industries relying on the ZPG series
Pharmaceutical
- API and Chinese medicine piece drying
- Granule, powder, and electuary drying
- Automatic temperature control for consistent batches
Confirm documentation requirements with our engineers before specifying for regulated production.
Food Processing
- Dehydrated vegetable drying
- Dried fruit production
- Sausage and cured product drying
Chemical & Industrial
- Pigment and dyestuff drying
- Plastic resin drying
- Electrical component drying
Why Choose Ruibo
Reasons processors specify Ruibo
Up to 50% Thermal Efficiency
Fully enclosed hot-air recirculation lifts thermal efficiency from a traditional 3-7% to 35-45%, reaching up to 50% at maximum.
Quiet, Balanced Operation
A high-temperature-resistant, low-noise axial fan keeps the oven running smoothly with minimal noise on the shop floor.
±2°C Automatic Control
Automatic temperature regulation holds drying conditions tightly within ±2°C for consistent, repeatable batches.
Flexible Heat Source
Steam, electricity, hot water, far infrared, or combined configurations let you match the oven to available site utilities.
Simple to Install and Maintain
Straightforward construction and interchangeable trays keep installation, maintenance, and changeover fast and low-cost.
Standardized RXH Model Line
Model designations follow China's unified RXH industry standard, giving a clear, standardized basis for model selection.
Materials Handled
FAQ
Common questions about the ZPG series
Request a Quote
Get CT-C Hot Air Circulating Oven pricing and a technical proposal
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