Ceramic raschig ring

1.Material:ceramic 2.Tem.(max):1100degree 3.Application:tower packing

Detailed Information

Ceramic packings have excellent acid resistance and heat resistance .Them can resist to corrosion of various inorganic acids,organic acids and organic solvents except hydrofluoric acid ,and can be used in high or low temperature conditions.consequently their application ranges are very wide.The packings can be used in the drying columns,absorbing columns,cooling towers,scrubbing towers in chemical industry,metallurgy industry,coal gas industry,oxygen producing industry,etc.

Table-1 Chemical composition:

Sio2	AL2O3	Fe2O3	CaO	MgO	K2O+Na2O	Other
>73%	17-23%	<1.0%	<0.5%	<0.5%	2-4%	<0.1%

Table-2 Physical properties:

Nominal size	1/2	5/8	3/4	1	1.5	2	3
	12mm	16mm	19mm	25mm	38mm	50mm	76mm
Number per m3	610,000	269,000	146,000	59,000	19,680	8,243	2,400
Package density(kg/ m3)	780	700	670	630	580	550	530
Free volume(%)	68	71	75	77	80	79	75
Surface area(m2 /m3 )	647	535	350	254	180	120	91
Specific gravity(g/ m3)	2.3
Water absorption(%)	0.3
Acid resistance(%)	>99.6
Max operating temp	1100°C
Porosity(%)	<1
Moh’s hardness(scale)	>6.5
Thermal Conductivity(w/m.k)	0.9-1.0
Specific heat (j/kg °C)	850-900

Table-3 Dimension for saddles ,as follows:  

Normal Size		Diameter of Deck(mm)	Outside Diameter(mm)	Height(mm)	Wall thickness(mm)	Width(mm)
1/2	12mm	12±1.0	20±1.4	10±1.0	2.0±0.45	10±2.0
5/8	16mm	16±1.0	24±1.5	12±1.0	2.0±0.5	12±2.0
3/4	19mm	19±1.5	28±2.0	14±1.0	2.5±0.5	14±2.0
1	25mm	25±1.5	38±2.0	19±1.0	3.0±0.5	20±2.0
1.5	38mm	38±2.0	60±3.0	30±1.5	4.0±1.0	30±2.5
2	50mm	50±2.5	80±4.0	40±2.0	5.0±1.0	40±3.0
3	76mm	76±4.0	114±4.0	57±3.0	9.0±1.0	57±4.0

These saddles have excellent resistance to acids except in the case of hydrofluoric acid.The saddles softening point is 1400°C min,and they show good thermal shock resistance during repeated cycling between 20 and 820 °C.Thermal shock test of ceramic saddle for RTO.

For example shipping the saddles over 80m3:

Randomly pick 100-200 pieces of addles from the batch or shipmentFor each sample selected,heat it up to and maintain them at this temperature for 30 minutesDrop the hot pieces into cold 20 °C waterRepeat steps two(2) and three(3)ten times on each and every piece in the sample lot.Examine the pieces and count the percentage that show clear signs of breakage and /or cracking.Our standard is “less”than eight(8%)percent

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Ceramic raschig ring