The selection of a tubular chain conveyor directly affects conveying efficiency, equipment service life, operation and maintenance costs, and environmental performance. This is especially true for conveying ultrafine powders and light powders used in dry desulfurization, where improper selection easily causes blockages, chain jumping, dust leakage, and insufficient capacity. Drawing on real-world industrial powder conveying conditions, Peman powder equipment manufacturers have compiled this professional selection guide to help enterprises choose the right model and avoid common mistakes from three dimensions: core parameters, material characteristics, and operating conditions.
I. Core Selection Parameters (Must Verify)
• Conveying capacity: Determine the hourly conveying volume based on upstream and downstream equipment capacity, in m³/h or t/h. For dry desulfurization, it must match the grinder output and the desulfurizer dosing amount. A 15%-20% margin is recommended to accommodate operational fluctuations.
• Conveying distance and height: Measure the horizontal conveying length, vertical lift height, number and angle of bends. A tubular chain conveyor can convey horizontally over 100 meters and lift vertically tens of meters; bend angles are customized as needed to avoid forced layouts that cause blockages.
• Material characteristics: Define the material name, particle size, moisture content, flowability, abrasiveness, and whether it is flammable or explosive. Ultrafine desulfurizers have fine particles and strong flowability, requiring a small-clearance, low-speed model to prevent material return; highly abrasive materials require thickened wear-resistant components.
• Operating speed: Low-speed operation is recommended for powder conveying, typically controlled at 0.1-0.3 m/s. Low speed reduces chain wear, avoids powder breakage, and lowers energy consumption. High-speed operation that triggers equipment failure is strictly prohibited.
• Material requirements: Carbon steel for conventional powders; 304/316 stainless steel for corrosion-resistant or clean applications; electrostatic-proof treatment for flammable or explosive powders to meet explosion-proof safety standards.
II. Selection Principles by Operating Conditions and Materials
1. Ultrafine powders / light materials (e.g., desulfurization sodium bicarbonate): Give priority to a tubular chain conveyor with small disc clearance, excellent sealing, and low speed to prevent material return and dust emission and ensure smooth conveying.
2. Highly abrasive materials (e.g., limestone powder): Use thickened wear-resistant chains and high-hardness discs; the pipe inner wall can be treated for wear resistance to extend the service life of wear parts and reduce maintenance frequency.
3. Space-constrained conditions: Adopt a vertical plus inclined combined layout to reduce footprint, replacing traditional bucket elevators and screw conveyors to achieve flexible three-dimensional conveying.
4. Multi-point feeding and discharging conditions: Customize models with multiple inlets and outlets to achieve centralized conveying and multi-point discharging with a single unit, simplifying the conveying system layout.
III. Key Reminders to Avoid Pitfalls in Selection
Do not blindly pursue low prices and choose inferior tubular chain conveyors; inferior equipment has chains that easily break, poor sealing that easily leaks powder, and unreasonable structures that easily cause blockages. Give priority to models that support automated linkage with grinders and desulfurization injection systems to achieve closed-loop control of feeding, conveying, and dosing throughout; also confirm
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