Industrial ceramic pall ring ( size: 25mm, 38mm, 50mm, 76mm )

Product Description  Ceramic pall ring is a open-hole ring packing, it is an upgrade version of raschig ring and can reduce pressure drop, which high and diameter is the same and with 5 ligules toward inside at every floor. Usually the open surface is 30% of the whole wall surface, this character helps the liquid & gas pass in packing tower pass freely from the windows of the rings. Ceramic pall ring has the characters of high mechanical strength, high chemical stability, and excellent heat endurance, it can resist high temperature, acid (except HF), alkali, salt and various organic solvents. It is widely applied in various packing towers. Chemical Composition

Composition	Value	Composition	Value
SiO2	68-72%	MgO	0.6%
Al2O3	18-22%	CaO	0.6%
Fe2O3	<1.0%	K2O	3.5-4.5%
Dissociation Fe	<0.01%	Na2O	0.1-0.3%

  Physical Properties

Index	Unit	Value
Specific gravity	g/cm³	2.3-2.4
Water absorption	%Wt	0.1-0.5
Hardness	Moh's Scale	7-8
Compression strength	N /mm²	300-500
Elasticity coefficient	GPa	60
Specific heat, 20°C-100°C	J/kg.K	840-920
Thermal conductivity, 30°C-100°C	W/m.K	1-1.5
Thermal expansion coefficient	10-6K-1	4.7
Acid resistance (DIN51102 sheet 2)	%	99.5
Heat resistance	°C	≥1000

  Technical Data

Specification (mm)	Diameter×Height×Thickness (mm)	Surface area (m2/m3)	Free volume (%)	Number Per m3 (n/m3)	Bulk Density (kg/m3)	Dry packing factor (M-1)
Φ25	25×25×3	210	73	36000	630	540
Φ38	38×38×4	140	75	12000	590	332
Φ50	50×50×5	100	78	4900	520	210
Φ76	76×76×9	70	80	1500	470	137