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Ceramic Heat Accumulator (Ceramic Regenerator) Honeycomb / Honeycomb brick

2026-04-13

Ceramic Heat Accumulator (Ceramic Regenerator)/Honeycomb / Honeycomb brick

A Ceramic Heat Accumulator (also known as regenerative ceramic) is a high-performance porous ceramic product sintered at high temperatures, primarily made from materials such as cordierite, mullite, corundum, and silicon carbide. As the core component of High-Temperature Air Combustion (HTAC) and Regenerative Thermal Oxidation (RTO) technologies, its primary function is to efficiently recover and reuse waste heat from high-temperature industrial flue gas through a cyclic process of heat absorption, storage, and release. This significantly improves energy efficiency, reduces fuel consumption, and lowers pollutant emissions.

1. Structural Features

Honeycomb Structure: Features numerous parallel, uniform channels (commonly square or hexagonal), providing an extremely large specific surface area (200–500 m²/m³) for highly efficient heat exchange.
Versatile Specifications: Standard sizes include 100×100×100mm and 150×150×300mm. Cell densities range from 100 to 400 cells per square inch (CPSI), with customizable options.

2. Key Properties

High Temperature Resistance: Withstands sustained temperatures of 1200–1600°C.
Excellent Thermal Shock Resistance: Low thermal expansion coefficient, resistant to cracking under rapid heating/cooling cycles.
High Heat Capacity: Volumetric heat capacity of 1.8–2.5 MJ/(m³·K), ensuring strong heat storage capability.
Chemical Corrosion Resistance: Stable in acidic and alkaline flue gas environments.
Low Flow Resistance: Smooth channels minimize pressure drop during fluid passage.

3. Main Materials & Temperature Ranges

Cordierite: Up to 1200°C. Best thermal shock resistance, cost-effective, ideal for medium-low temperatures.
Mullite: Up to 1400°C. High strength and good corrosion resistance.
Corundum/High-Alumina: Up to 1600°C. Superior high-temperature resistance and heat capacity.
Silicon Carbide (SiC): Up to 1650°C. Excellent thermal conductivity and thermal shock resistance, perfect for highly corrosive and ultra-high temperature conditions.

4. Working Principle

Heat Release (Cooling Cycle): Cold exhaust gas or air passes through the hot ceramic body, absorbing heat to be preheated, while the accumulator cools down.
Heat Absorption (Heating Cycle): Hot flue gas or purified gas passes through the cool accumulator, transferring its heat to be stored, while the gas is cooled.

By periodically switching the gas flow, waste heat is continuously recovered with a thermal efficiency of over 95%.

陶瓷蓄热体（Ceramic Heat Accumulator / Regenerator）

陶瓷蓄热体，又称蓄热陶瓷，是一种以堇青石、莫来石、刚玉、碳化硅等为主要原料，经高温烧结而成的高效多孔结构陶瓷制品。它是蓄热式高温空气燃烧（HTAC）与蓄热式焚烧（RTO）技术的核心部件，主要功能是通过周期性的吸热 — 储热 — 放热循环，实现工业高温烟气余热的高效回收与再利用，从而大幅提升能源利用率、降低燃料消耗并减少污染物排放。

蜂窝状结构：内部为大量均匀贯通的平行孔道（常见方形、六边形），比表面积极大（200–500 m²/m³），热交换效率极高。