Henan Hongke Heavy Machinery Co., Ltd. is pleased to announce the successful trial run of a Φ 2.2×45m catalyst rotary kiln production line at a customer site in Kaifeng, Henan Province, China. This milestone marks the official commissioning of a brand-new system—engineered from the ground up for high-precision catalyst calcination.
Project Background: Meeting Catalyst Production Demands
Catalysts are essential materials widely used in the petrochemical, fine chemical, and environmental protection industries. Their performance—including specific surface area, pore structure, mechanical strength, and active phase distribution—is determined during the calcination stage, a critical thermal treatment step in the preparation process.
Our customer in Kaifeng is a chemical manufacturer specializing in catalyst production. They needed a modern, reliable calcination system that could deliver consistent product quality while meeting strict process control requirements. After evaluating several suppliers, they chose Henan Hongke Heavy Machinery as their partner.
Why Indirect-Fired Design Matters
For catalyst calcination, product purity is paramount. Direct-fired kilns expose the material to combustion gases and flame, which can introduce contaminants. That's why we used an indirect-fired design—the kiln shell is heated from the outside by an external furnace shroud, so the catalyst never comes into contact with combustion products.
This design offers several critical advantages for catalyst production:
| Feature | Benefit |
|---|---|
| No contamination | Catalyst purity is preserved—no direct contact with flame or flue gas |
| Inert atmosphere capability | Sensitive catalysts can be processed under nitrogen or other controlled gases |
| Multi-zone temperature control | Independent zones allow precise thermal profiling (±5°C accuracy) |
| Uniform heating | The rotating action ensures all particles receive consistent heat treatment |
| Controlled residence time | Variable speed drive allows adjustment to match product specifications |
Indirect-fired rotary kilns are recognized as the preferred technology for calcining catalysts and molecular sieves precisely because they prevent contamination while allowing precise temperature control across multiple zones.
Equipment Specifications
| Parameter | Specification |
|---|---|
| Kiln diameter | 2.2 meters |
| Kiln length | 45 meters |
| Heating method | Indirect external heating (gas-fired or electric furnace shroud) |
| Temperature control accuracy | ±5°C |
| Kiln inclination | 3–4% |
| Rotation speed | Variable frequency drive |
| Atmosphere control | Air, nitrogen, or reducing gas |
This kiln model is a standard configuration for catalyst calcination applications. The 45-meter length provides sufficient residence time for complete thermal treatment of the catalyst material.
Trial Run Results – Confirmed
The trial run confirmed that the system meets all design specifications:
Temperature stability – All heating zones achieved and maintained setpoint temperatures within ±5°C
Atmosphere integrity – Inert gas environment was maintained throughout operation
Product quality – Test batches showed consistent properties meeting customer specifications
Continuous operation – System ran smoothly with automated monitoring and minimal operator intervention
About Henan Hongke Heavy Machinery Co., Ltd.
Henan Hongke Heavy Machinery Co., Ltd. (Henan Hongke Machinery) has been designing and manufacturing rotary kilns, rotary dryers, ball mills, and crushers since 2006. We serve customers worldwide with a focus on practical solutions, on-time delivery, and reliable after-sales support.
Our rotary kilns incorporate advanced sealing systems, high-precision metering, and stable drive arrangements—technologies that help improve operational efficiency and reduce maintenance requirements.
Summary
The successful trial run of the Φ 2.2×45m catalyst rotary kiln production line in Kaifeng demonstrates Henan Hongke Heavy Machinery's ability to deliver specialized calcination equipment for the chemical catalyst industry. By integrating indirect heating design, multi-zone temperature control, and inert atmosphere capability, the system produces consistent, high-quality catalyst material while ensuring product purity and process reliability.
For catalyst calcination, mineral processing, or other thermal treatment applications, contact Henan Hongke Heavy Machinery Co., Ltd.
Henan Hongke Heavy Machinery Co., Ltd.
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