Product Detail

Direct contact heat exchanger is regenerative after-burning – also known as regenerative thermal oxidizers (RTO), which is used to destroy Hazardous Air Pollutants (HAPs), Volatile Organic Compounds (VOCs) and odorous emissions etc.




RTOs use a ceramic media (so called ceramic regenerator ) to retain and release heat on a dynamic flow cycle.

40 cells of alumina blocks as its main purpose is to preheat incoming process air to combustion air in order to lower operating costs, achieve higher heat transfer efficiency in Regenerative Thermal oxidation units (RTOs).







Quick Details

Material	Regular Sizes	Cell	Application
Alumina	100*100*100MM 100*150*150MM 150*150*150MM 150*150*300MM	40*40	RTO for industry , air pollution control equipment, VOCs Treatment






Alumina Block Physical Property

Alumina Block Physical Property	Range	Unit
Density	2.0-2.3	G/CM3
Water Absorption	≤20%
Coefficient of Thermal Expansion	≤5	x10-6k -1
Specific Heat (20-1000℃)	900-1150	J/Kg.K
Thermal Conductivity (20-1000℃)	1.5-2.0	W/m.k
Impact Thermal Resistance	≥300	℃/MIN
Strength （A axis）	≥32	MPA
Compressive（B axis）	≥8





Alumina Block Chemical Composition

Material Chemical Composition	Range in %
AL2O3/ Alumina Oxide	55-65
SiO2 /Silicon Oxide	25-35
MgO	1-3
Fe2O3+TiO2	3-5
Others	<5





Why Choose Alumina Blocks ？

• Economical costs.
• Low pressure loss.
• Widely used in industrial field.
• High heat storage.
• Low heat expansion .
• High specific heat capacity .
• High specific surface area .
• Low press drop.
• Low thermal resistance.
• Good thermal conductivity .
• Energy saving.









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FAQ

1. What’s the delivery time ?

A: About 4 weeks for regular alumina blocks. (43 cells ,150*150*300mm) for 20 GP container.

2. How doesAlumina block work in RTOs Equipment ?

A : It let the straight-through flow prevents dust build-up and damage from aggressive chemicals ,also bring out maximum heat recovery and low pressure loss .

3. Why different shapes of cell ?

A : It differs from heat efficiency Conductivity through the Honeycomb ceramic passage .

4. What is the RTOs ?

A : Regenerative Thermal Oxidizer (RTO) is an industrial system that destroys volatile organic compounds (VOC’s) in process exhaust air before it pollutes the environment.

5.  Causes of ceramic block damage.

A : Impact , thermal shock damage , rapid steam vapor explosion,

6. How does monolith blocks work in RTOs ?

A: the Alumina blocks store the heat generated by the decomposition of VOCs, and uses the thermal energy stored in the alumina blocks to pre-heat and decompose the untreated VOCs, thereby achieving high thermal efficiency.