Three - Drum Dryer: High - Performance Drying Solution

Drum dryer series products, including the Three - Drum Dryer, are mainly used for drying powdery, granular, small lumps, and other wet materials. They are widely applied in a diverse range of industries:

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• Energy Industry: In the energy sector, the Three - Drum Dryer is used to dry biomass materials such as wood chips, straw, and rice husks. These dried materials can be further processed into biomass fuels, contributing to the production of renewable energy.

• Fertiliser Industry: For the fertiliser industry, it dries various raw materials used in fertiliser production. This ensures the proper consistency and quality of fertilisers, enhancing their effectiveness and storage stability.

• Chemical Industry: In chemical manufacturing, the dryer is employed to dry chemical raw materials and intermediate products. The precise drying process helps in maintaining the chemical properties of the materials, which is crucial for the production of high - quality chemical products.

• Pharmaceutical Industry: In the pharmaceutical field, the Three - Drum Dryer plays a vital role in drying pharmaceutical ingredients. The strict requirements for cleanliness and quality control in the pharmaceutical industry are met by the dryer's efficient and hygienic drying process.

Usage in Biomass Granulation

In the biomass granulation process, if the raw material moisture does not meet the granulation requirements, it needs to be dried. The Three - Drum Dryer is a widely used drying equipment in this context. It can effectively dry materials like wood chips, straw, and rice. The equipment's simple operation and stable performance make it a preferred choice for biomass granulation plants. By drying the raw materials to the appropriate moisture content, it improves the granulation process, resulting in better - quality biomass granules with higher energy density and combustion efficiency.

4. Working Principle

1. Hot Air Inflow: Hot air enters the dryer cylinder from the hot air furnace. The hot air serves as the medium for heat transfer, providing the necessary energy to evaporate the moisture from the materials.

2. Material Inlet: The wet material is fed into the dryer from the inlet. The design of the inlet ensures a smooth and continuous flow of materials into the drying chamber.

3. Material Lifting: Inside the dryer, the lifting board elevates the material. As the cylinder rotates, the lifting board scoops up the material and then drops it, allowing the material to be exposed to the hot air more effectively.

4. Heat and Mass Transfer: The hot air comes into contact with the lifted material. Through a combination of convection, conduction, and radiation, the hot air absorbs the moisture in the material. This process gradually dries the material as it moves through the dryer.

5. Material Discharge: The dried material exits from the discharge port. Meanwhile, the moist hot air is drawn away from the upper end of the dryer. The separation of the dried material and the moist air is crucial for ensuring the quality of the dried product.

6. Material Propulsion: The movement of the material mainly relies on the propelling effect of the lifting board. As the board lifts and drops the material, it also provides a forward - moving force, causing the material to travel through the different sections of the dryer and complete the drying process.

5. Equipment Configuration

A drum dryer, including the Three - Drum Dryer, cannot operate independently. It generally requires several additional components:

• Heat Source: A heat source such as a hot air furnace is essential. The hot air furnace generates the hot air that is fed into the dryer cylinder. The type of heat source can vary, including those that use coal, gas, oil, or biomass fuels, depending on the specific requirements and availability.

• Fans: Fans are used to blow the hot air into the dryer and also to facilitate the removal of the moist air. They ensure a continuous and uniform flow of air through the dryer, enhancing the heat transfer and drying efficiency.

• Shakelong: A Shakelong, or cyclone separator, is an important component for separating the solid particles from the gas stream. It helps in collecting any fine particles that may be carried by the hot air, preventing them from being discharged into the environment and also recovering valuable materials.

• Dust Removal Equipment: In some cases, additional dust removal equipment is installed. This is particularly important in industries where strict environmental regulations need to be adhered to. The dust removal equipment further cleans the exhaust air, reducing air pollution.

6. Component Composition

The Three - Drum Dryer consists of several key components:

Cylinder: The cylinder is the core part of the dryer. It is where the drying process takes place. The Three - Drum Dryer has a unique structure with three concentric cylinders. The inner and middle cylinders are designed to enhance the heat transfer and material movement, while the outer cylinder provides insulation and protection.

Inlet: The inlet is the point of entry for the wet materials. It is designed to distribute the materials evenly into the dryer, ensuring efficient drying.

Outlet: The outlet is where the dried materials are discharged. The design of the outlet allows for a smooth and controlled discharge of the dried product.

Toothed Ring: The toothed ring is part of the mechanical drive system. It helps in the rotation of the cylinder, ensuring a stable and consistent movement during the drying process.

Aperture: Apertures in the dryer are used for various purposes, such as allowing the entry and exit of air, and for accessing the interior of the dryer for maintenance and inspection.

7. Company Profile

Our company offers a comprehensive range of products related to the biomass and industrial processing fields. Our series of products include wood pellet machines, straw pellet machines, biomass pellet machines, sludge briquetting machines, airflow and drum series drying equipment, cutting and crushing series of equipment, as well as other ancillary cooling equipment, screening equipment, packaging equipment, and conveying equipment. We provide a full - set of biomass pellet production line equipment. Our technical personnel are dedicated to customizing configurations and designs according to the different needs of customers and the available plant space. With our high - quality products and professional services, we strive to meet the diverse requirements of various industries and contribute to the development of efficient and sustainable production processes.