Engineering Design
We deliver customized refractory and thermal designs for gasification systems to ensure precise heat-flow control and lining reliability.
Gasification
MRL provides specialized refractory solutions for gasification systems, serving leading coal chemical and energy enterprises worldwide. With extensive application experience in high-temperature, high-pressure, and severe abrasion environments, our refractories are designed for a wide range of gasifier types and operating conditions. By extending lining service life, reducing unplanned shutdowns, and improving operational reliability, MRL helps customers achieve stable, efficient, and long-term gasification operations.
One-stop Gasification Solution
Material Supply
We offer a full range of products engineered for high-temperature, high-pressure, and high-abrasion gasifier environments, with proven performance across major projects.
On-Site Installation
We deliver standardized installation, on-site support, and remote guidance to ensure construction quality and efficiency.
Lifecycle Support
We deliver full-cycle technical support including operating data review, lining condition analysis, and optimization recommendations.
Gasification Solution
Gasification involves extreme high-temperature and high-pressure environments where refractory performance directly affects gasifier availability, campaign life, and operational safety. MRL addresses these challenges by delivering tailored refractory materials and integrated technical support to ensure stable, efficient, and long-lasting gasification operations.
Dome & Transition Zone
The dome and its transition area connecting to the barrel represent the most structurally complex and critical section of a gasifier. The refractory lining in this zone must not only support the structural dead load but also withstand continuous high-temperature radiation and severe thermal stress. Any minor material defect or design oversight can be rapidly amplified in this area, potentially leading to dome instability or sealing failure, which may critically compromise overall gasifier safety.
Challenge
Due to large curvature and non-uniform temperature distribution, this zone is highly susceptible to thermal stress concentration. Common failure modes include brick cracking, bulging, spalling, or deformation-related detachment. Spherical dome structures are particularly vulnerable, as flame convergence can cause localized overheating, while the transition section often becomes a high-risk failure zone due to joint misalignment or steep stress gradients. In addition, upward disturbance from syngas and slag flow intensifies high-temperature abrasion and chemical attack, placing exceptionally high demands on refractory performance.
Solution
MRL recommends KAB series chrome-corundum bricks with superior thermal shock resistance (such as KAB-65 and KAB-85), which offer excellent resistance to thermal stress and outstanding gas-tightness—making them ideal for dome applications. In geometrically complex dome sections, KM series chrome-corundum castables are applied for monolithic construction, enhancing overall strength and spalling resistance. At transition joints, ceramic fiber compression layers are introduced to absorb structural stress. For insulation, HAB-99Q hollow alumina bricks are recommended, featuring low thermal conductivity and strong slag resistance, significantly reducing dome thermal load while improving insulation efficiency. Through a combined strategy of rigid–flexible structural coordination and multi-layer protection, MRL’s system solution effectively extends dome service life and reduces maintenance frequency.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Barrel Zone
The barrel zone is the most uniformly heated area of the gasifier and typically operates over the longest campaign period, serving as the primary reaction zone for gasification. Refractories in this section must not only withstand stable high temperatures and continuous abrasion but also demonstrate excellent fatigue resistance under fluctuating operating conditions. The durability of the lining in this “long-duration battle” often defines the economic operating limits of the gasifier.
Challenge
Solid particles carried by the syngas cause continuous surface abrasion, which, combined with slag flow erosion, easily leads to grooves, triangular pits, and edge wear on brick surfaces. Variations in furnace temperature and coal feedstock further introduce thermal fatigue, accelerating joint loosening and brick displacement. Once lining tightness deteriorates, syngas penetration may cause burn-through or blistering, posing safety risks and significantly increasing maintenance intensity and downtime costs.
Solution
For the barrel hot face, MRL recommends KAB series high-chrome bricks (such as KAB-70 and KAB-75), offering enhanced chemical corrosion resistance and thermal stability suitable for long-term abrasion zones. In areas more sensitive to thermal shock, chrome-corundum grades such as KAB-85 and KAB-90S are applied to improve resistance to thermal fatigue. High-strength, high-chrome mortars are used at brick joints, combined with standardized installation practices to enhance sealing integrity. Backup layers may also utilize general-purpose KAB bricks to ensure structural support and thermal balance, while HAB series hollow alumina bricks are recommended for insulation to reduce shell temperature and improve energy efficiency. Through a strategy of targeted brick selection combined with coordinated backup insulation, the overall barrel system lifespan and economic performance are significantly enhanced.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Bottom Cone & Slag Outlet Zone
The bottom cone and slag outlet constitute the most severely loaded areas of the gasifier, where thermal load, mechanical erosion, and chemical attack are highly concentrated. This zone directly handles the collection and discharge of high-temperature molten slag and is often the weakest link limiting overall lining campaign life—making it critical to achieving long-term, stable gasifier operation.
Challenge
Under the combined effects of high temperature, high pressure, and intense erosion, bottom cone bricks are prone to rapid wear, thickness reduction, or even structural collapse. As the primary slag discharge pathway, the slag outlet is continuously exposed to high-temperature molten slag while also experiencing pressure fluctuations and thermal cycling, which can result in thermal shock damage, cracking, and spalling. Insufficient lining stability in this area may lead to pressure loss, slag outlet burn-through, forced shutdowns, or even serious safety incidents.
Solution
For the bottom cone, MRL prioritizes the use of KAB-90S high-strength, high-chrome bricks, which combine excellent compressive strength, wear resistance, and corrosion resistance—making them well-suited for prolonged high-intensity operation. Where enhanced thermal shock resistance is required, chrome-corundum KAB bricks may be applied in combination to balance thermal fatigue resistance and mechanical strength. The slag outlet is recommended to be monolithically lined with KM series chrome-corundum castables, forming a dense, joint-free protective layer that improves gas-tightness and erosion resistance. Insulation layers are also coordinated with HAB-99Q hollow alumina bricks to maintain insulation performance while preventing slag flow fluctuations from affecting shell temperature. In practice, MRL can further customize brick shapes based on specific furnace structures, improving fit and structural stability, and significantly extending the service life of both the slag outlet and bottom cone.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Gasification
MRL provides specialized refractory solutions for gasification systems, serving leading coal chemical and energy enterprises worldwide. With extensive application experience in high-temperature, high-pressure, and severe abrasion environments, our refractories are designed for a wide range of gasifier types and operating conditions. By extending lining service life, reducing unplanned shutdowns, and improving operational reliability, MRL helps customers achieve stable, efficient, and long-term gasification operations.
One-stop Gasification Solution
Engineering Design
We deliver customized refractory and thermal designs for gasification systems to ensure precise heat-flow control and lining reliability.
Material Supply
We offer a full range of products engineered for high-temperature, high-pressure, and high-abrasion gasifier environments, with proven performance across major projects.
On-Site Installation
We deliver standardized installation, on-site support, and remote guidance to ensure construction quality and efficiency.
Lifecycle Support
We deliver full-cycle technical support including operating data review, lining condition analysis, and optimization recommendations.
Gasification Solution
Gasification involves extreme high-temperature and high-pressure environments where refractory performance directly affects gasifier availability, campaign life, and operational safety. MRL addresses these challenges by delivering tailored refractory materials and integrated technical support to ensure stable, efficient, and long-lasting gasification operations.
Dome & Transition Zone
The dome and its transition area connecting to the barrel represent the most structurally complex and critical section of a gasifier. The refractory lining in this zone must not only support the structural dead load but also withstand continuous high-temperature radiation and severe thermal stress. Any minor material defect or design oversight can be rapidly amplified in this area, potentially leading to dome instability or sealing failure, which may critically compromise overall gasifier safety.
Challenge
Due to large curvature and non-uniform temperature distribution, this zone is highly susceptible to thermal stress concentration. Common failure modes include brick cracking, bulging, spalling, or deformation-related detachment. Spherical dome structures are particularly vulnerable, as flame convergence can cause localized overheating, while the transition section often becomes a high-risk failure zone due to joint misalignment or steep stress gradients. In addition, upward disturbance from syngas and slag flow intensifies high-temperature abrasion and chemical attack, placing exceptionally high demands on refractory performance.
Challenge & Solution
MRL recommends KAB series chrome-corundum bricks with superior thermal shock resistance (such as KAB-65 and KAB-85), which offer excellent resistance to thermal stress and outstanding gas-tightness—making them ideal for dome applications. In geometrically complex dome sections, KM series chrome-corundum castables are applied for monolithic construction, enhancing overall strength and spalling resistance. At transition joints, ceramic fiber compression layers are introduced to absorb structural stress. For insulation, HAB-99Q hollow alumina bricks are recommended, featuring low thermal conductivity and strong slag resistance, significantly reducing dome thermal load while improving insulation efficiency. Through a combined strategy of rigid–flexible structural coordination and multi-layer protection, MRL’s system solution effectively extends dome service life and reduces maintenance frequency.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Barrel Zone
The barrel zone is the most uniformly heated area of the gasifier and typically operates over the longest campaign period, serving as the primary reaction zone for gasification. Refractories in this section must not only withstand stable high temperatures and continuous abrasion but also demonstrate excellent fatigue resistance under fluctuating operating conditions. The durability of the lining in this “long-duration battle” often defines the economic operating limits of the gasifier.
Challenge
Solid particles carried by the syngas cause continuous surface abrasion, which, combined with slag flow erosion, easily leads to grooves, triangular pits, and edge wear on brick surfaces. Variations in furnace temperature and coal feedstock further introduce thermal fatigue, accelerating joint loosening and brick displacement. Once lining tightness deteriorates, syngas penetration may cause burn-through or blistering, posing safety risks and significantly increasing maintenance intensity and downtime costs.
Solution
For the barrel hot face, MRL recommends KAB series high-chrome bricks (such as KAB-70 and KAB-75), offering enhanced chemical corrosion resistance and thermal stability suitable for long-term abrasion zones. In areas more sensitive to thermal shock, chrome-corundum grades such as KAB-85 and KAB-90S are applied to improve resistance to thermal fatigue. High-strength, high-chrome mortars are used at brick joints, combined with standardized installation practices to enhance sealing integrity. Backup layers may also utilize general-purpose KAB bricks to ensure structural support and thermal balance, while HAB series hollow alumina bricks are recommended for insulation to reduce shell temperature and improve energy efficiency. Through a strategy of targeted brick selection combined with coordinated backup insulation, the overall barrel system lifespan and economic performance are significantly enhanced.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Bottom Cone & Slag Outlet Zone
The bottom cone and slag outlet constitute the most severely loaded areas of the gasifier, where thermal load, mechanical erosion, and chemical attack are highly concentrated. This zone directly handles the collection and discharge of high-temperature molten slag and is often the weakest link limiting overall lining campaign life—making it critical to achieving long-term, stable gasifier operation.
Challenge
Under the combined effects of high temperature, high pressure, and intense erosion, bottom cone bricks are prone to rapid wear, thickness reduction, or even structural collapse. As the primary slag discharge pathway, the slag outlet is continuously exposed to high-temperature molten slag while also experiencing pressure fluctuations and thermal cycling, which can result in thermal shock damage, cracking, and spalling. Insufficient lining stability in this area may lead to pressure loss, slag outlet burn-through, forced shutdowns, or even serious safety incidents.
Solution
For the bottom cone, MRL prioritizes the use of KAB-90S high-strength, high-chrome bricks, which combine excellent compressive strength, wear resistance, and corrosion resistance—making them well-suited for prolonged high-intensity operation. Where enhanced thermal shock resistance is required, chrome-corundum KAB bricks may be applied in combination to balance thermal fatigue resistance and mechanical strength. The slag outlet is recommended to be monolithically lined with KM series chrome-corundum castables, forming a dense, joint-free protective layer that improves gas-tightness and erosion resistance. Insulation layers are also coordinated with HAB-99Q hollow alumina bricks to maintain insulation performance while preventing slag flow fluctuations from affecting shell temperature. In practice, MRL can further customize brick shapes based on specific furnace structures, improving fit and structural stability, and significantly extending the service life of both the slag outlet and bottom cone.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Gasification
MRL provides specialized refractory solutions for gasification systems, serving leading coal chemical and energy enterprises worldwide. With extensive application experience in high-temperature, high-pressure, and severe abrasion environments, our refractories are designed for a wide range of gasifier types and operating conditions. By extending lining service life, reducing unplanned shutdowns, and improving operational reliability, MRL helps customers achieve stable, efficient, and long-term gasification operations.
One-stop Gasification Solution
Engineering Design
We deliver customized refractory and thermal designs for gasification systems to ensure precise heat-flow control and lining reliability.
Material Supply
We offer a full range of products engineered for high-temperature, high-pressure, and high-abrasion gasifier environments, with proven performance across major projects.
On-Site Installation
We deliver standardized installation, on-site support, and remote guidance to ensure construction quality and efficiency.
Lifecycle Support
We deliver full-cycle technical support including operating data review, lining condition analysis, and optimization recommendations.
Gasification Solution
Gasification involves extreme high-temperature and high-pressure environments where refractory performance directly affects gasifier availability, campaign life, and operational safety. MRL addresses these challenges by delivering tailored refractory materials and integrated technical support to ensure stable, efficient, and long-lasting gasification operations.
Dome & Transition Zone
The dome and its transition area connecting to the barrel represent the most structurally complex and critical section of a gasifier. The refractory lining in this zone must not only support the structural dead load but also withstand continuous high-temperature radiation and severe thermal stress. Any minor material defect or design oversight can be rapidly amplified in this area, potentially leading to dome instability or sealing failure, which may critically compromise overall gasifier safety.
Challenge
Due to large curvature and non-uniform temperature distribution, this zone is highly susceptible to thermal stress concentration. Common failure modes include brick cracking, bulging, spalling, or deformation-related detachment. Spherical dome structures are particularly vulnerable, as flame convergence can cause localized overheating, while the transition section often becomes a high-risk failure zone due to joint misalignment or steep stress gradients. In addition, upward disturbance from syngas and slag flow intensifies high-temperature abrasion and chemical attack, placing exceptionally high demands on refractory performance.
Solution
MRL recommends KAB series chrome-corundum bricks with superior thermal shock resistance (such as KAB-65 and KAB-85), which offer excellent resistance to thermal stress and outstanding gas-tightness—making them ideal for dome applications. In geometrically complex dome sections, KM series chrome-corundum castables are applied for monolithic construction, enhancing overall strength and spalling resistance. At transition joints, ceramic fiber compression layers are introduced to absorb structural stress. For insulation, HAB-99Q hollow alumina bricks are recommended, featuring low thermal conductivity and strong slag resistance, significantly reducing dome thermal load while improving insulation efficiency. Through a combined strategy of rigid–flexible structural coordination and multi-layer protection, MRL’s system solution effectively extends dome service life and reduces maintenance frequency.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Barrel Zone
The barrel zone is the most uniformly heated area of the gasifier and typically operates over the longest campaign period, serving as the primary reaction zone for gasification. Refractories in this section must not only withstand stable high temperatures and continuous abrasion but also demonstrate excellent fatigue resistance under fluctuating operating conditions. The durability of the lining in this “long-duration battle” often defines the economic operating limits of the gasifier.
Challenge
Solid particles carried by the syngas cause continuous surface abrasion, which, combined with slag flow erosion, easily leads to grooves, triangular pits, and edge wear on brick surfaces. Variations in furnace temperature and coal feedstock further introduce thermal fatigue, accelerating joint loosening and brick displacement. Once lining tightness deteriorates, syngas penetration may cause burn-through or blistering, posing safety risks and significantly increasing maintenance intensity and downtime costs.
Solution
For the barrel hot face, MRL recommends KAB series high-chrome bricks (such as KAB-70 and KAB-75), offering enhanced chemical corrosion resistance and thermal stability suitable for long-term abrasion zones. In areas more sensitive to thermal shock, chrome-corundum grades such as KAB-85 and KAB-90S are applied to improve resistance to thermal fatigue. High-strength, high-chrome mortars are used at brick joints, combined with standardized installation practices to enhance sealing integrity. Backup layers may also utilize general-purpose KAB bricks to ensure structural support and thermal balance, while HAB series hollow alumina bricks are recommended for insulation to reduce shell temperature and improve energy efficiency. Through a strategy of targeted brick selection combined with coordinated backup insulation, the overall barrel system lifespan and economic performance are significantly enhanced.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Bottom Cone & Slag Outlet Zone
The bottom cone and slag outlet constitute the most severely loaded areas of the gasifier, where thermal load, mechanical erosion, and chemical attack are highly concentrated. This zone directly handles the collection and discharge of high-temperature molten slag and is often the weakest link limiting overall lining campaign life—making it critical to achieving long-term, stable gasifier operation.
Challenge
Under the combined effects of high temperature, high pressure, and intense erosion, bottom cone bricks are prone to rapid wear, thickness reduction, or even structural collapse. As the primary slag discharge pathway, the slag outlet is continuously exposed to high-temperature molten slag while also experiencing pressure fluctuations and thermal cycling, which can result in thermal shock damage, cracking, and spalling. Insufficient lining stability in this area may lead to pressure loss, slag outlet burn-through, forced shutdowns, or even serious safety incidents.
Solution
For the bottom cone, MRL prioritizes the use of KAB-90S high-strength, high-chrome bricks, which combine excellent compressive strength, wear resistance, and corrosion resistance—making them well-suited for prolonged high-intensity operation. Where enhanced thermal shock resistance is required, chrome-corundum KAB bricks may be applied in combination to balance thermal fatigue resistance and mechanical strength. The slag outlet is recommended to be monolithically lined with KM series chrome-corundum castables, forming a dense, joint-free protective layer that improves gas-tightness and erosion resistance. Insulation layers are also coordinated with HAB-99Q hollow alumina bricks to maintain insulation performance while preventing slag flow fluctuations from affecting shell temperature. In practice, MRL can further customize brick shapes based on specific furnace structures, improving fit and structural stability, and significantly extending the service life of both the slag outlet and bottom cone.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.