Mullite Honeycomb Ceramic for Heat Exchange-安徽美程化工有限公司校园招聘简章

Product Introduction

Honeycomb ceramic heat recovery media is a key component of regenerative burner, which is widely used in iron and steel, machinery, building materials, petrochemicals, nonferrous metal smelting and other industries, furnace, hot air furnace, heat treatment furnace, cracking furnace, baking, melting furnace, both in the hot furnace, oil and gas boilers, and furnaces. The technique is to make two ceramic media beds alternating endothermic exothermic by reversing device. Most common applications include: RTO, (RCO), metal casting combustor, metal melting industrial furnace, etc.

Compared with other ceramic media which have conventionally been used in RTOs. The advantages of honeycomb monolith include a greater thermal efficiency and a lower pressure drop across the heat exchanger bed. The increase in thermal efficiency and lower pressure drop generally results in smaller equipment design, lower capital cost and lower operating cost. Honeycomb ceramic serves as a more efficient alternative for the following reasons: cutting fan load for significant energy saving (low pressure drop owing to straight channels), less volume, thin wall thickness, faster in thermal exchange. Lighter weight, so less structural support is required. Above all, High specific surface area means high conversion efficiency in converters occupying small volumes. All these benefit, especially larger specific surface area make honeycomb ceramic the better performance media across industries.

Material:
Corundum mullite, mullite Cordierite, Cordierite, mullite, zirconium mullite, silicon carbide composite, etc

Shape:
Square, rectangle, circle, triangle, hexagonal hole, etc

Product parameters

RTO/RCO honeycomb ceramics Main Size:

LWG(mm)	150x 150 x 300(150)
Number of Cell	25x25=625	40x40= 1600	43x43=1849	50x50=2500	60x60=3600
Width of Cell(mm)	4.95	3.02	2.81	2.38	1.98
Thickness of inner wall(mm)	1.0	0.7	0.65	0.6	0.5
Surface Area(m2/m3)	577	886	950	1084	1294
Opening Ratio(%)	68	65	65	63	63

RTO/RCO honeycomb ceramics Physical Properties:

Item	Aluminum Porceian-cordierite	Dense aluminum porcelain	Cordierite	Mullite-Cordierite	Mullite	Enamel
Density(g/cm3)	2.0~2.3	2.4~2.6	1.6~1.9	1.7~2.0	2.0~2.4	1.7~2.0
Bulk density (g/cm3)	0.65~0.8	0.65~0.8	0.6~0.7	0.65~0.75	0.65~0.8	0.65~0.75
Thermal Expansion Coefficient (X10-6°C-1) (RT-800°C)	≤6	≤6	≤3	≤3.5	≤5.5	≤6.5
Specific heat capacity (J/Kg.k)	950~1150	1000~1200	900~1100	900~1100	1000~1150	900~1100
Thermal Conductivity (w/m.k)(20-1000°C)	1.5~2.0	1.5~2.0	1.2~1.8	1.4~1.9	1.5~2.0	1.4~1.9
Thermal shock resistance Max Temperature(ºC)	≥400	≥300	≥450	≥350	≥350	≥300
Advised Max Temperature(ºC)	1250	1350	1150	1250	1450	1200
Water Absorption Rate(%)	≤20	≤5	≤22	≤20	≤20	≤10

RTO/RCO honeycomb ceramics Chemical composition:

Item	Aluminum Porceian-cordierite	Dense aluminum porcelain	Cordierite	Mullite-Cordierite	Mullite	Enamel
SiO2	25~35	25~35	45~55	40~50	25~35	68~72
Al2O3	55~65	55~65	28~38	55~65	55~65	22~26
MgO	2~4	2~4	11~14	5~9	≤2	≤0.5
Fe203+TiO2	1~4	1~4	1~3	1~3	1~4	1~3
Others	≤5	≤5	≤5	≤5	≤5	≤5

Function

RTO equipment mainly deals with volatile organic compounds (VOCs), and typical organic waste gases include hydrocarbons, aromatic hydrocarbons, alcohols, ketones, aldehydes, ethers, phenols, esters, nitriles, etc. and their derivatives. Widely used in chemical industry, automotive paint, spray paint drying equipment, organic chemical industry, petrochemical industry, engraving printing, offset printing, food processing and other fields.