Submerged Chain Conveyor System (SCC System)

The Submerged Chain Conveyor (SCC) System is an industrial material handling system designed to efficiently transport materials, typically in high-temperature and highly abrasive environments. It is commonly used in power plants, waste-to-energy (WTE) plants, and cement plants for handling ash, slag, or other byproducts of combustion.

Key Features of the Submerged Chain Conveyor System:

1. Design and Operation:
   • Submerged Chain Design: The system consists of heavy-duty, heat-resistant chains running through a water bath or submerged area, where the material being transported is kept submerged in water or coolant. This helps in cooling down the hot material and also reduces dust and particulate emissions during transportation.
   • Water-Cooled Operation: The submerged area serves a dual purpose – cooling the transported materials (such as hot ash or slag) and reducing the risk of fires or excessive heat buildup. It also provides a way to control the temperature of the material before it reaches downstream processing or storage areas.
   • Conveyor Chain: The conveyor features a series of interconnected chains, often made from materials like stainless steel or heat-resistant alloys, that move the material along the conveyor system. The chain moves over sprockets and is supported by a series of rollers to ensure smooth operation.
2. Materials Handled:
   • Ash Handling: The SCC system is commonly used for bottom ash or fly ash in power plants and waste-to-energy plants. It is effective for handling large volumes of ash that are produced in the combustion process.
   • Slag Handling: In industries such as steel production or cement manufacturing, SCC systems can be used to move slag, a byproduct of melting and refining processes.
   • Other Hot Byproducts: SCCs are also suitable for handling other hot materials, including molten metal and other byproducts generated in various high-temperature industrial processes.
3. Advantages of SCC Systems:
   • Effective Cooling and Dust Control: The submerged environment provides both cooling for hot materials and dust suppression, which helps in maintaining environmental standards and ensuring safer operations.
   • Low Maintenance: Since the system is submerged and cooled, it tends to have fewer issues related to wear and tear due to the reduced exposure to extreme temperatures and abrasion.
   • Continuous Operation: The SCC system can transport materials continuously, which is ideal for industries that need to handle large quantities of byproducts over extended periods.
   • Energy Efficiency: By utilizing the submerged design, the SCC system can reduce energy consumption by preventing excessive wear and tear on mechanical components and limiting the amount of cooling needed for the materials.
4. Components of the SCC System:
   • Conveyor Chain: As mentioned, the conveyor consists of a heavy-duty chain, often made of high-strength steel, which is designed to withstand the heat and abrasiveness of the materials being transported.
   • Submerged Trough or Channel: The chain runs through a trough that is filled with water or another cooling medium to submerge the materials. This also helps maintain the required environmental conditions, such as dust suppression and temperature regulation.
   • Drive and Tensioning Mechanism: The system is driven by a motor that rotates the chains, with tensioning mechanisms to ensure the chains move smoothly and at the correct speed.
   • Pulleys and Sprockets: The chain moves around pulleys or sprockets that guide the material along the system. These components are critical for controlling the movement and direction of the chain.
   • Discharge Hopper: The system usually has a discharge hopper or container at the end, where the ash or slag is deposited. This is where the material is unloaded for further processing or disposal.
5. Applications:
   • Power Generation: In coal-fired and waste-to-energy power plants, the SCC system is widely used for bottom ash handling. The system collects the hot ash from the boiler or furnace and transports it to a cooling area or storage bin.
   • Steel and Cement Industries: The SCC system is also useful for slag handling in steel mills and cement plants, where molten slag is cooled and transported via a submerged chain conveyor.
   • Incineration Facilities: WTE facilities commonly use SCCs for handling the ash produced during the incineration of municipal waste. The cooled ash is safely transported to storage or processing areas.
   • Metallurgical Industries: In the steel industry, SCCs can be used to handle hot byproducts like slag, providing an efficient way to manage waste materials.
6. Safety Features:
   • Temperature Monitoring: Continuous monitoring of the material temperature is crucial to ensure that the system can handle the high heat without compromising safety. Temperature sensors are usually installed along the conveyor.
   • Water Level Control: For proper cooling, it is essential to maintain the right water level in the submerged trough. Water level sensors and control valves are used to regulate this.
   • Fire Protection: The submerged design inherently reduces the risk of fires, but additional fire suppression systems are often included as an added precaution.

Maintenance Considerations:

• Regular Inspection: Like all conveyor systems, SCCs require regular inspection of the chains, sprockets, and other moving parts to ensure smooth operation.
• Water Quality: The water or coolant used in the submerged area must be regularly maintained to prevent clogging or contamination of the system, especially if it is in contact with fine particulates like ash or slag.
• Chain Lubrication: To maintain the efficiency and longevity of the conveyor, the chains need to be properly lubricated to prevent corrosion and excessive wear.

Conclusion:

The Submerged Chain Conveyor System (SCC) is an effective and reliable solution for handling high-temperature, abrasive materials like ash and slag in various industries. Its ability to cool materials while reducing dust and preventing fires makes it an excellent choice for power plants, steel mills, and waste-to-energy facilities. Proper maintenance and monitoring are crucial to ensuring its long-term performance and safety.

SELECTION & TECHNICAL QUESTIONS

Q1: How do I select the right conveyor model? What information should I provide?

> To recommend the most suitable solution, please provide the following details:

> 1. Material type: What material are you conveying? (e.g., fly ash, wood chips, biomass pellets, bottom ash, etc.)

> 2. Material properties: Particle size, temperature, moisture content, abrasiveness

> 3. Capacity requirement: How many tons per hour (t/h) do you need?

> 4. Installation conditions: Conveying distance, incline angle, space limitations

> 5. Application industry: Which industry is this for? (e.g., waste-to-energy plant, biomass power plant, cement plant)

> You can also email us or contact us via WhatsApp. Our engineers will get back to you within 24 hours.

Q2: What is the difference between screw conveyors and chain conveyors? Which one should I choose?

> Both types have different applications:

> – Screw Conveyors: Best for powdery and small-grain materials (e.g., fly ash, cement powder). Good sealing performance, simple structure, low maintenance cost.

> – Chain Scraper Conveyors: Best for bulky, highly abrasive materials (e.g., bottom ash, municipal solid waste, biomass fragments). Supports multiple inlet and outlet points.

> – Bucket Elevators: Ideal for vertical or steep-incline material lifting.

> If you are not sure, tell us your material and working conditions, and our engineers will help you choose.

Q3: Can your equipment handle high-temperature materials? What is the maximum temperature?

> We can customize equipment according to material temperature:

> – Standard type: 0~80°C, carbon steel

> – Medium temperature type: 80~200°C, thickened wear-resistant liner

> – High temperature type: 200~400°C, special heat-resistant steel, optional cooling jacket

> Please tell us your material temperature, and we will recommend the most suitable material solution.

Q4: Are there any limits on conveying distance and lifting height?

> Standard design range:

> – Screw conveyor: Single section up to 70 meters; multiple sections can be connected for longer distances

> – Chain conveyor: Single machine up to 60 meters

> – Bucket elevator: Lifting height up to 50 meters

> We can also customize for extra-long distances or special angles. Contact us for detailed solutions.

Q5: Do you provide explosion-proof design?

> Yes. For explosive and flammable conditions such as pulverized coal and biomass dust, we offer:

> – Explosion-proof motors (Ex d IIB T4 standard)

> – Reserved openings for explosion vents / rupture discs

> – Fully sealed structure to prevent dust leakage

> Please specify your explosion-proof rating requirements.

CUSTOMIZATION & MANUFACTURING

Q6: Do you support customization? What is the lead time?

> Over 90% of our equipment is customized according to customer working conditions. Standard models take about 90–120days. Special customizations take 120–180 days, depending on configuration complexity.

Q7: What material options do you offer?

> Common materials include:

> – Carbon steel (Q235B): Standard working conditions

> – Wear-resistant steel (NM400/NM500): Highly abrasive materials

> – Stainless steel 304/316L: Food, chemical, corrosion-resistant requirements

> – Bi-metal wear-resistant composite plate: Extreme abrasion conditions

> We will recommend the most cost-effective material solution based on your material properties.

Q8: What certifications do you have?

> We hold the following certifications:

> – ISO 9001:2015 Quality Management System

> – ISO 14001 Environmental Management System

> – ISO 45001 Occupational Health & Safety Management

> – CE Certification (EN 1090 Steel Structure)

> If you need scanned copies of specific certificates, please contact us.

DELIVERY & LOGISTICS

Q9: Which countries do you export to? Do you have export experience?

> Our equipment has been exported to more than 20 countries worldwide, including:

> – Europe: Germany, France, Poland, Turkey, etc.

> – Southeast Asia: Singapore, Thailand, Indonesia, Vietnam, etc.

> – Middle East: Saudi Arabia, UAE, etc.

> – South America**: Brazil, Chile, etc.

> We are familiar with the full export process: packaging, customs declaration, and ocean freight. We can provide FOB, CIF, and other trade terms.

Q10: What is your packaging method? Is it suitable for long-distance ocean shipping?

> Export-standard packaging:

> – Large items / complete machines**: Rust prevention + waterproof film + fumigated solid wood pallet

> – Precision components: Wooden case with shock-absorbing filling

> – Random accessories: Categorized packing with detailed packing list

> All wooden packaging meets IPPC fumigation standards for direct customs clearance.

Q11: What is your minimum order quantity?

> We do not have a strict minimum order quantity. Single-unit orders are welcome. Bulk orders can enjoy more favorable pricing.

INSTALLATION & AFTER-SALES

Q12: Do you provide installation guidance? Do engineers need to come to site?

> We offer two service options:

> 1. Remote guidance: Detailed installation drawings and operation manuals, video guidance for installation (free of charge)

> 2. On-site service: Dispatch engineers to site for installation and commissioning (travel costs are additional)

> Most customers choose remote guidance. Our equipment is designed as a modular structure for easy installation.

Q13: What is the warranty period? What are the wearing parts?

> Standard warranty period is 12 months (from the date of arrival at port).

> Wearing parts list:

> – Chain / screw flights: Approximately 1–3 years, depending on material abrasiveness

> – Liners: Approximately 2–4 years

> – Bearings: Approximately 2–3 years

> We recommend ordering a wearing-parts spare kit together with your first order.

Q14: How do you solve problems during operation?

> We provide 7×24 technical support:>

> – Response within 24 hours for technical issues

> – Remote video troubleshooting guidance

> – Engineer on-site service when necessary

> – Common spare parts in stock for fast delivery

QUOTATION & COOPERATION

**Q15: How can I get a quote? How long does it take?

> Quotation process:

> 1. You provide material parameters, capacity, installation conditions, and other requirements

> 2. Our engineers evaluate and select the appropriate model

> 3. Formal quotation and technical proposal provided within 7 working days

> You can contact us via email, or the online inquiry form.

Q16: What are your payment terms?

> Standard payment terms:

> – 30% advance payment: After contract signing, to start production

> – 70% balance: Before shipment, or against copy of Bill of Lading

For long-term cooperative customers, more flexible payment terms can be negotiated.

Follow these 3 steps to find your ideal conveyor solution

Step 1: Identify Your Material Type

Different materials require different conveyor designs. Tell us what you are conveying:

Step 2: Define Your Working Conditions

Please prepare the following parameters before contacting us:

Step 3: Choose Configuration Options

Based on your answers above, our engineers will recommend:

Material grade — carbon steel / wear-resistant steel / stainless steel

Sealing type — open trough / fully enclosed / gas-tight

Drive system — motor power, gearbox brand, speed range

Auxiliary options — explosion-proof motor, cooling jacket, cleaning device, level sensors

 Not Sure Where to Start?

Send us your basic requirements, and our engineers will design a customized solution for you — completely free.

Email: bootec@bootecgroup.com  Response time: Within 24 hours

[REQUEST A FREE QUOTATION →]