Noir de Carbone
Depuis plus de trois décennies, Saint-Gobain Performance Ceramics & Refractories est l'un des principaux fournisseurs de revêtements réfractaires complets pour les réacteurs de noir de carbone.
Une gamme de solutions conçues sur mesure sont disponible pour les revêtements et faces chaudes de tous les types de réacteurs :
- Briques en chrome-alumine
- Briques en alumine de haute pureté en qualités AH199, AL100 et Alfrax101
- Mullfrax® 102HF résistant aux chocs thermiques et briques ALXNUMX
- Zirnorite® Briques en zircone pour la tenue aux températures élevées
- Pièces électro-fondues en Jargal M en fonte fondue pour une résistance maximale à l'érosion
- Produits de coulage isoalnts et denses pour les couches d'isolation
Solution par réacteurs
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- Réacteurs
Réacteurs

Saint-Gobain Performance Ceramics & Refractories est un fournisseur mondial de solutions réfractaires, spécialisé dans toutes les principales technologies de noir de carbone.
Tout commence par l'opérateur du réacteur qui spécifie les conditions de fonctionnement requises pour produire la qualité de noir souhaitée.
Des facteurs clés tels que le type des réacteurs, les températures, les géométries, la ou les sources de combustible détermineront la solution proposée.
Les conditions de fonctionnement varient selon la zone du four, chaque zone posant des défis spécifiques en termes d'atmosphère (oxydante ou réductrice), de vitesses de gaz, d'interactions chimiques et de chocs thermiques.
Saint-Gobain Performance Ceramics & Refractories travaille en étroite collaboration avec les opérateurs de réacteurs pour fournir des solutions réfractaires qui répondent aux objectifs de performance et de coût de l'opérateur. Les solutions sont également personnalisées en fonction de la forme et de la qualité du matériau.
Reactor Structure and Operation
Carbon black tread reactors typically consist of several critical zones, each playing a distinct role in the production process:
1. Combustion Chamber: The initial stage where fuel combustion occurs at extremely high temperatures to generate the thermal energy needed for carbon black formation.
2. Reaction Zone: The main area where the formation of carbon black takes place through the interaction of feedstock with high-temperature gases.
3. Choke: A narrow section that helps regulate the reaction flow and maintain the necessary conditions for efficient carbon black production.
4. Quench Zone: This zone rapidly cools the reaction mixture to halt further carbon black formation and stabilize the final product.
These reactors often operate at temperatures exceeding 1500°C (2732°F) in certain zones, subjecting the reactor lining to highly erosive and corrosive environments due to the presence of hot gases and particulates.
Operating Conditions
The operating conditions of a carbon black tread reactor vary across different zones, each presenting unique challenges such as varying atmospheres (oxidizing or reducing), high gas velocities, intense chemical interactions, and frequent temperature fluctuations. Each of these factors influences the choice of refractory material and design.
Refractory Solutions
Saint-Gobain offers customized refractory solutions tailored to the specific needs of each reactor zone
- Hot Face: Uses 99% alumina bricks (AL 100, AH 199H) or zirconia bricks (ZH192) to provide resistance to high temperatures and thermal shock.
- Backup Layer: Bubble alumina castable (RI34/CA333) for insulation and additional protection.
- Hot Face: 99% alumina bricks (AL 100, AH 199) or 90% alumina bricks (Mullfrax® 202 HF) for durability against high temperatures and erosion.
- Backup Layer: Bubble alumina castable (RI34/CA333) or dense alumina castable (Supcast/CA334) for added thermal insulation and structural support.
- Hot Face: Uses high alumina bricks (AL 100, AH 199 H), Monocriram, or fused cast alumina (Jargal M) for extreme wear resistance.
- Backup Layer: Bubble alumina castable (RI34HR/CA333) to further protect against intense conditions.
- Hot Face: 90% alumina bricks (Mullfrax® 202 HF, MSR2) or high alumina bricks (AL 102 / AL102 V) to withstand rapid cooling and thermal shock.
- Backup Layer: Bubble alumina castable (RI34HR/CA333) or dense alumina castable (Supcast/CA334) for extra resilience.
Key Benefits of Advanced Refractory Solutions
- Extended Reactor Lifetime: Using advanced refractory materials can significantly extend the lifespan of carbon black tread reactors, reducing the frequency of relining and associated downtime.
- Reduced Maintenance Requirements: Enhanced durability leads to less frequent maintenance, which reduces operational costs and interruptions.
- Improved Resistance to Erosion and Corrosion: High-quality refractory materials are specifically engineered to resist the erosive and corrosive effects of hot gases and particulates.
- Enhanced Thermal Shock Resistance: The ability to withstand rapid temperature fluctuations minimizes the risk of thermal damage and ensures consistent performance.
- Increased Operational Efficiency: Optimal refractory solutions contribute to stable operating conditions, improving overall process efficiency and ensuring consistent product quality.
Carbon Black Technologies Solutions
Selecting the right refractory material is critical for the optimal performance of carbon black tread reactors. High-purity alumina and zirconia-based products are preferred for their excellent resistance to extreme temperatures, erosion, and corrosive environments. The specific grade and form of these materials (such as bricks, shapes, or castables) are chosen based on the requirements of each reactor zone and the unique challenges it presents.
By utilizing these advanced refractory solutions, carbon black manufacturers can achieve longer operational campaigns, enhance product quality, and boost overall efficiency in their tread reactors.
Saint-Gobain Performance Ceramics & Refractories works closely with furnace operators to develop and deliver refractory solutions that meet both performance and economic goals. These lining solutions are customized in terms of material form and grade to address the specific needs of each reactor zone and to optimize reactor performance.
Documents
Energy-Carbon-Black-brochure-EN-A4-web
SOLUTIONS FOR CARCASS AND TREAD REACTORS
