China Honeycomb Ceramic for RTO/RCO Manufacturer and Supplier

Honeycomb Ceramic for RTO/RCO

Short Description:

Honeycomb Ceramic for RTO/RCO short description: Honeycomb Ceramics are applied as heat storage media in regenerative thermal processes to recover thermal energy and destroy Hazardous Air Pollutants (HAPs), Volatile Organic Compounds (VOCs) and odorous emissions etc. Typical application examples are thermal air pollution abatement systems, based on regenerative thermal oxidation (RTO), thermal regenerators for process gases, heat storage media for decentralized Regenerative Housing Ventilation systems (RHV) or heat storage applications in renewable energy generation systems.

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Advantages:

Large specific surface area
Low coefficient of thermal expansion
High temperature stability
Excellent thermal shock resistance
Low abrasion loss
Variety of materials & specification

Applications:

It is widely used in the fields of Automotive paint, Chemical industry, Electronic & Electric Manufacturing industry, Contact Combustion System, and so on.

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Chemical & Physical Properties

Chemical & Physical index		Cordierite	Dense cordierite	Cordierite- mullite	Mullite	Corundum-mullite
Chemical Composition	SiO₂ %	45~55	45~55	35~45	25~38	20~32
	AI₂O₃%	30~38	33~43	40~50	50~65	65~73
	MgO %	10~15	5~13	3~13	-	-
	K₂O+Na₂O %	<1.0	<1.0	<1.0	<1.0	<1.0
	Fe₂O₃ %	<1.5	<1.5	<1.5	<1.5	<1.5
Thermal Expansion Coefficient 10^-6/K^-1		<2	<4	<4	<5	<7
Specific Heat J/kg·K		830~900	850~950	850~1000	900~1050	900~1100
Working Temperature ℃		<1300	<1300	<1350	<1450	<1500
PS: we also can make products at your request and actual operating condition.

Specification sheet

Dimension	Quantity of channels	Wall thickness	Qutside wall thickness	Channel width	Void section	Weight piece
150150300	13*13	1.5mm±0.1	1.7mm±0.15	9.8-10mm	70%	3.8-4.8kg
150150300	15*15	1.4mm±0.1	1.6mm±0.15	8.3-8.5mm	69%	3.8-4.8kg
150150300	25*25	1.0mm±0.1	1.2mm±0.15	4.8-5.0mm	67%	4.0-5.0kg
150150300	40*40	0.7mm±0.1	1.1mm±0.15	2.9-3.1mm	64%	4.7-5.7kg
150150300	43*43	0.65mm±0.1	1.1mm±0.15	2.7-2.9mm	62%	4.8-5.8kg
150150300	50*50	0.6mm±0.1	0.8mm±0.15	2.3-2.5mm	61%	4.8-5.8kg
150150300	60*60	0.45mm±0.1	0.8mm±0.15	1.9-2.1mm	63.4%	4.7-5.7kg

Working Theory

Increasing the solvent laden air (SLA) over the temperature of 750-800 °C, this process allows a high heat recovery system thanks to the ceramic material. Each regenerative chamber contains a ceramic matrix, which, depending on the direction of flow, absorbs the heat from the waste gas after combustion or preheats the air prior to combustion. According to the pollutant flow rate, the plant can use 3 or 5 towers. The process flows upward through the bed in one chamber which has been preheated during the previous cycle; the bed preheats the air near to the combustion temperature, approximately 800°C, and during this period the temperature of the bed falls rapidly. The combustion temperature is maintained either by the heat produced from the oxidation of the VOC’s or, if the VOC concentration is low, by addition of support fuel. The waste gas from the combustion chamber flows down through the bed in other chamber where the ceramic matrix absorbs the heat from the gas, before discharge to the stack. The heat absorbed by the bed in the outlet chamber is then used to preheat the incoming air during the next cycle.

The average cycle time varies from 60 to 120 seconds depending on the nature and concentration of the individual contaminants. The third chamber allows a further treatment of the waste air volume, which the flow inversion prevented from staying inside the combustion chamber at the required temperature for the necessary time. In order to avoid over heating of the thermal oxidizer when high concentration of solvent occurs, a hot bypass discharging a hot stream directly from combustion chamber is used. This stream at about 900°C can be used for instance to heat up thermal oil, water or to produce steam.