Steam Tube Rotary Dryer
Industrial Indirect Heating Tube Bundle Dryer for Energy-Saving & Pollution-Free Material Drying
Steam tube rotary dryer is a new-generation indirect conduction drying equipment optimized for industrial wet materials. It features ultra-high thermal efficiency, 30%-50% energy saving, zero material pollution and low dust emission. Supporting precise low-temperature constant-temperature drying.
Anti-Stick Device
Fully Sealed
PLC Control
What is Steam Tube Rotary Dryer?
Most traditional industrial rotary dryers adopt direct hot air drying mode, which mixes hot air with materials for heat exchange. This working method leads to massive heat loss, high energy consumption, serious dust overflow, and easy impurity contamination of materials. Especially for heat-sensitive, high-purity and flammable materials, direct high-temperature drying is prone to material deterioration, color change, combustion and explosion risks, greatly limiting product quality and production safety.
The steam tube rotary dryer completely changes the direct drying principle. It arranges multiple concentric seamless steam tube bundles inside the rotary drum, relying on high-temperature steam circulating in the tubes for indirect conduction heating. Materials are heated evenly through tube wall heat transfer, realizing pure physical dehydration without any impurity pollution. The fully sealed negative pressure operation achieves low dust and clean production. With adjustable low-temperature constant-temperature drying, it adapts to various fragile and heat-sensitive materials, and has become the mainstream energy-saving and environmentally friendly upgrading equipment for modern industrial drying projects.
Contents
Complete Equipment Composition of Coal Steam Tube Dryer
1. Rotary Drum & Steam Tube Bundle Heat Exchange System (Core)
The industrial heavy-duty rotary drum is equipped with full-length dense steam tube bundles arranged in concentric circles. The large-area tube array greatly increases effective heat exchange area. During drum rotation, the steam tubes cooperate with internal lifting plates to gently flip and scatter materials, realizing 360° uniform heat conduction. The integrated tube bundle structure is wear-resistant and high-temperature resistant, with stable heat output and long service life, ensuring continuous and efficient heat exchange.
2. Closed-Loop Steam Circulation System
Supporting matching with factory existing steam boilers or waste steam recovery systems, forming a fully closed steam circulation loop. High-temperature steam circulates stably inside the tube bundles, with adjustable pressure and temperature. The heat source loss is extremely low, and the residual condensed water can be recycled and reused, realizing secondary energy saving, which is far more energy-efficient than traditional open heating systems.
3. Anti-Stick Uniform Lifting Device
Customized multi-angle anti-stick lifting plates and material guiding structure, designed for powdery, granular and slightly sticky industrial materials. It continuously breaks up agglomerated materials during operation, avoids material accumulation and wall sticking, ensures uniform material dispersion and full contact with heat exchange tubes, and guarantees consistent drying effect without wet core or uneven dryness.
4. Fully Sealed Feeding & Discharging Structure
Equipped with sealed quantitative screw feeder and closed discharging device. The whole drying process operates under micro negative pressure, which effectively suppresses material dust overflow and wind-borne material loss. The fully enclosed structure isolates external air and impurities, completely protecting material purity and improving raw material utilization rate.
5. Intelligent PLC Constant Temperature Control System
Intelligent automatic control cabinet can precisely adjust steam pressure, drum rotating speed and internal drying temperature according to material moisture and characteristics. Equipped with over-temperature protection, steam pressure monitoring, fault alarm and automatic shutdown functions, it realizes 24-hour unmanned safe operation and stable finished product quality.
6. Low-Dust Exhaust & Purification System
Matched with multi-stage cyclone dust removal and pulse bag dust removal dual purification system. It collects trace dust and water vapor generated during drying, realizes zero dust emission, meets global industrial environmental protection standards, and creates a clean workshop production environment.
Core Product Advantages of Steam Tube Rotary Dryer
1. Indirect Heating, Zero Material Pollution
The steam tube bundle indirect heat exchange mode completely isolates the heat source from materials. No hot air, flue gas or impurities contact the materials during the whole process, effectively protecting material purity, color and chemical properties. It solves the problem of material quality degradation caused by direct hot air drying, and is especially suitable for high-purity chemical materials and high-grade fuel materials.
2. Ultra-High Energy Saving, Low Operating Cost
Closed-loop steam circulation + large-area tube bundle heat exchange structure greatly improves thermal utilization rate. Compared with traditional direct-fired dryers, the comprehensive energy saving rate reaches 30%-50%. It can fully utilize industrial waste steam from power plants, chemical plants and coal mines, greatly reducing long-term fuel and power consumption costs for enterprises.
3. Precise Low-Temperature Constant Temperature Drying
The drying temperature can be precisely adjusted by controlling steam pressure, realizing stable low-temperature constant-temperature dehydration (110-250℃). It avoids local overheating, material coking, deterioration and spontaneous combustion risks, perfectly protects the activity of heat-sensitive materials, and solves the drying pain points of fragile and flammable materials.
4. Low Dust & Green Environmental Protection
Fully sealed negative pressure closed operation fundamentally suppresses dust overflow and material loss. The supporting multi-stage dust purification system realizes standard zero pollution emission. It solves the environmental pollution problems of traditional dryers with large dust and serious material waste, realizing green and clean industrial production.
5. Wide Material Adaptability & Strong Versatility
The equipment adapts to various industrial materials, including coal, coal slime, lignite, biomass particles, chemical powder, mineral slag and other granular and powdery materials. It can handle materials with inlet moisture of 30%-80%, with flexible and adjustable finished moisture, meeting the drying needs of multiple industries.
6. Stable Operation & Low Maintenance
Industrial heavy-duty integrated structure, wear-resistant and corrosion-resistant steam tube bundles and drum body, low failure rate. The closed-loop heating system has fewer vulnerable parts, simple daily maintenance and long service life. It supports 24-hour uninterrupted high-load operation, suitable for large-scale industrial continuous production.
Working Principle & Production Process of Steam Tube Rotary Dryer
Working Principle
The steam tube rotary dryer adopts advanced indirect conduction drying principle based on tube bundle heat exchange. High-temperature steam is transported to the dense tube bundles inside the rotary drum through the closed circulation pipeline, forming a stable and uniform constant-temperature heat source on the tube wall surface. Wet materials are evenly and quantitatively sent into the drum through the sealed feeding system.
With the slow rotation of the drum, the internal lifting plates and steam tube bundles jointly flip and scatter materials to form a uniform material curtain. Materials fully contact with the high-temperature tube wall for heat conduction and heat exchange, realizing step-by-step evaporation of surface and internal moisture. The whole process realizes complete isolation of heat source and materials without any pollution. Water vapor and trace dust are purified and discharged by the dust removal system, and high-quality dry materials with stable moisture are discharged to complete efficient, safe and environmentally friendly drying.
Standard Production Flow
Wet Material Feeding → Sealed Quantitative Conveying → Steam Tube Bundle Constant Temperature Heat Exchange → Uniform Stirring & Dehydration → Dust Purification & Exhaust → Dry Material Discharging → Storage / Deep Processing / Sales
Application Scenarios of Steam Tube Rotary Dryer
The steam tube rotary dryer is widely applicable to various industrial drying scenarios with steam supply conditions, covering energy, chemical, mineral, biomass and other industries. It is especially suitable for heat-sensitive, high-purity, flammable and easily polluted materials, including coal, lignite, coal slime, petroleum coke, biomass raw materials, chemical powder, mineral slag and other materials. It is the preferred energy-saving and environmental protection upgrading equipment for industrial drying projects with high requirements for safety, material quality and low energy consumption.
Core Application Fields: Coal industry upgrading, chemical raw material drying, biomass energy processing, mineral slag dehydration, power plant waste steam utilization, high-purity industrial material production
Real Project Cases of Steam Tube Rotary Dryer
Case 1: 15T/H Coal Slime Drying Project | Vietnam Coal Processing Plant
Project Info: The customer has abundant factory waste steam resources and needs to dry high-moisture coal slime. Adopting our steam tube rotary dryer, it makes full use of waste steam for indirect heating drying. The energy saving rate reaches 42%, and the fully sealed low-dust operation meets local environmental protection standards. The dried coal slime has uniform moisture and no impurity pollution, which is directly used for power generation, greatly reducing enterprise fuel costs.
Case 2: 10T/H Chemical Powder Drying Project | Thailand Chemical Factory
Project Info: The customer’s chemical powder is heat-sensitive and easy to be polluted by flue gas. Traditional direct drying equipment cannot meet production standards. Our steam tube indirect dryer realizes zero contact between heat source and materials, completely protecting powder purity and chemical activity. Precise constant-temperature drying avoids material deterioration, and the finished products fully meet high-end chemical raw material standards.
Case 3: 12T/H Biomass Material Drying Project | Poland Biomass Energy Plant
Project Info: Facing the problems of high energy consumption and easy material loss in traditional biomass drying, the customer adopted our steam tube rotary dryer. The low-temperature gentle drying protects biomass fiber structure, and the closed-loop steam circulation reduces operating energy consumption by 38%. The equipment runs stably for 24 hours, providing high-quality dry biomass raw materials for biomass power generation and pellet production.
Technical Parameters of Steam Tube Rotary Dryer
| Spec | Inner diameter of cylinder (mm) | Tube length (mm) | Slope(°) | Speed (r/min) | Motor Power (Kw) | Capacity (t/h) | Inlet temperature (℃) | Weight(t) |
| Ф1.0X10m | 1000 | 10000 | 2.5 | 3.4 | 4 | 0.6~1.8 | ≤700℃ | 5.6 |
| Ф1.2X12m | 1200 | 12000 | 2.5 | 3.4 | 11 | 0.8~2.5 | 15 | |
| Ф1.5X14m | 1500 | 14000 | 2.5 | 3.4 | 15 | 1.8～4 | 19.6 | |
| Ф1.8X15m | 1800 | 15000 | 2.5 | 4.04 | 18.5 | 2.8～6.5 | 25 | |
| Ф1.8X20m | 1800 | 20000 | 2.5 | 3.1 | 22 | 5～8 | 32.2 | |
| Ф2.0X18m | 2000 | 18000 | 2.5 | 3.16 | 30 | 6～10 | 38.8 | |
| Ф2.2X20m | 2200 | 20000 | 2.5 | 3.68 | 37 | 6.5～11 | 47 | |
| Ф2.2X22m | 2200 | 22000 | 2.2 | 2.9 | 37 | 7～12 | 50 | |
| Ф2.4X22m | 2400 | 22000 | 2.5 | 3.27 | 45 | 7.5～14 | 62 | |
| Ф2.6X24m | 2600 | 24000 | 2.5 | 3.2 | 55 | 8～17 | 72.5 | |
| Ф2.8X22m | 2800 | 22000 | 2.5 | 3.4 | 132 | 28～32 | 94 | |
| Ф3.0X28m | 3000 | 28000 | 2.5 | 3.2 | 75 | 32～36 | 105 | |
| Ф3.2X30m | 3200 | 30000 | 3-5 | 3.2 | 90 | 43～50 | 700-800℃ | 118 |
| Ф3.6X32m | 3600 | 32000 | 3-5 | 3.0 | 160 | 60～76 | 143 | |
| Ф4.0X36m | 4000 | 36000 | 3-5 | 3.0 | 200 | 82～90 | 189 | |
| Ф4.6X42m | 4600 | 42000 | 3-5 | 3.0 | 280 | 100～110 | 290 |
Note: Production capacity will vary with product composition and water content.
Get Custom Steam Tube Drying Solution
Our steam tube rotary dryer is a high-efficiency, energy-saving and environmentally friendly industrial drying equipment focusing on indirect tube bundle heat exchange. It solves the core pain points of traditional dryers such as high energy consumption, material pollution, large dust and poor safety. It helps global industrial enterprises reduce production costs, improve finished product quality, realize waste steam resource utilization and green clean production, and create long-term economic benefits.
Contact us now to get free equipment quotation, customized model selection and professional industrial drying project solution!
FAQs of Steam Tube Rotary Dryer
Q1: What is the biggest advantage of steam tube rotary dryer over direct dryers?
A: The core advantage is indirect heating and zero pollution. Direct dryers mix hot air and materials, causing impurity contamination and high heat loss. Steam tube dryers rely on tube bundle conduction heating with isolated heat source, protecting material purity, saving 30%-50% energy, and featuring lower dust and higher safety, which is suitable for high-standard industrial drying.
Q2: Does the equipment need supporting steam supply?
A: Yes, it is suitable for factories with steam boilers or industrial waste steam resources such as power plants, chemical plants and coal mines. It can maximize the utilization of waste steam to reduce operating costs. We can also customize supporting steam heating systems for customers without steam sources.
Q3: Can it dry heat-sensitive and easily deteriorated materials?
A: Absolutely yes. The equipment realizes precise low-temperature constant-temperature drying through steam pressure adjustment, avoiding high-temperature overheating and material coking or deterioration. The indirect heating mode protects material activity, color and chemical properties, which is the best choice for heat-sensitive industrial materials.
Q4: Is the steam tube drying process safe for flammable materials?
A: Very safe. The whole process adopts low-temperature constant-temperature indirect heat exchange without open flame and high-temperature hot air scouring. The fully sealed negative pressure structure reduces air contact, fundamentally avoiding dust explosion and spontaneous combustion risks, meeting industrial safety production specifications.
Q5: What materials can the steam tube rotary dryer process?
A: It has strong versatility, suitable for coal, lignite, coal slime, petroleum coke, biomass particles, chemical powder, mineral slag and other granular and powdery materials. It can handle materials with moisture from 30% to 80%, widely used in energy, chemical, mineral and environmental protection industries.
