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Click the number：5793 Entry time：2015/2/27 【Print this page】 【Close】
Pall Ring
Metal Pall Ring
中文名：鲍尔环
1. Metal Pall Ring
Metal Pall Ring used in petrochemical industry is made of material like carbon steel, stainless steel or Aluminum alloy, etc. The product has features such as thin wall, heat resistant, high free volume, high capacity, low resistance, high separation efficiency and so on. It is especially suitable for rectification towers under vacuum to treat thermo sensitive, decomposable, polymerizable or cokable systems, so it is widely used in packing towers in petrochemical industry, chemical fertilizer industry and environmental protection, etc.
Geometric Parameters
|
Size |
Bulk density |
Quantity |
Specific surface area |
Void volume |
|
mm |
kg/m3 |
n/m3 |
m2/m3 |
m3/m3 |
|
16*16*0.3 |
360 |
201000 |
346 |
95.5 |
|
25*25*0.4 |
302 |
51000 |
212 |
96.2 |
|
25*25*0.5 |
400 |
51000 |
216 |
95 |
|
25*25*0.6 |
461 |
51000 |
219 |
94.2 |
|
38*38*0.4 |
218 |
15000 |
143 |
97.2 |
|
38*38*0.5 |
262 |
15180 |
145 |
96.7 |
|
38*38*0.6 |
328 |
15000 |
146 |
95.9 |
|
50*50*0.5 |
194 |
6500 |
106 |
97.5 |
|
50*50*0.7 |
285 |
6500 |
108 |
96.4 |
|
50*50*0.9 |
365 |
6500 |
109 |
95.4 |
|
76*76*0.8 |
205 |
1830 |
69 |
97.4 |
|
90*90*1.0 |
229 |
1160 |
62 |
97.1 |
The above data is reference to material stainless steel (AISI304) in the material thickness shown. Other wall thicknesses are available on request.
Material available: carbon steel, stainless steel including 304, 304L, 410,316, 316L.
2. Plastic Pall Ring
Plastic Pall Ring's structure improves distribution of gas-liquid and its efficiency can be improved above 50%and only has half of pressure drop compared with raschig ring.
Pall ring has some advantages such as lower pressure drop, big flux, high effeciency, which HYPAK packing has better efficiency and lower pressure drop and better distribution of liquid compared with common pall ring.
Available material: PVC, CPVC, PP, PE, PVDF
It can be applied to various of device of isolation, absorption, deadsorption, common decompression such as Toluene separation, ethylbenzene separation, isooctane separation and desulfurization system etc.
Parameters
|
D*H*δ |
Number per volume |
Surface area |
Void Volume |
Dry packing factor |
|
mm |
n/m3 |
m2/m3 |
% |
m-1 |
|
16×16×1 |
180000 |
188 |
91.1 |
275 |
|
25×25×1.2 |
49000 |
175 |
90 |
239 |
|
38×38×1.4 |
13600 |
155 |
89 |
220 |
|
50×50×1.5 |
6300 |
93 |
90 |
127 |
|
76×76×2.6 |
1830 |
73.2 |
92 |
94 |
3. Ceramic Pall Ring
The Pall ring is a kind of new type and high efficient packing that is improved on the basis of the Raschig ring. Yuanying pall ring is a proven design that provides higher capacity and lower pressure drop than trays and other random packing. The opened cylinder walls and inward bent protrusions of the Pall Ring allow greater capacity and lower pressure drop than standard cylindrical rings. This open ring design also maintains an even distribution and resists wall-channeling tendencies. The interior and exterior contacting surfaces of the Pall ring provide for an effective distribution of liquids and gasses and resist plugging, fouling and nesting.
Physical Properties
|
Size |
DxHxT mm |
Specific area m2m3 |
Void volume m3m3 |
Number pc./m3 |
Bulk density kg/m3 |
Dry packing factor m-1 |
|
1''(25mm) |
25x25x3 |
220 |
0.75 |
50000 |
600 |
565 |
|
1.5''(38mm) |
38x38x4 |
150 |
0.78 |
13400 |
540 |
356 |
|
2''(50mm) |
50x50x5 |
120 |
0.78 |
6400 |
555 |
252 |
|
3''(80mm) |
80x80x8 |
75 |
0.80 |
1950 |
520 |
146 |
Chemical Composition
|
SiO2 |
Al2O3 |
Fe2O3 |
CaO |
K2O+Na2O |
|
＞70% |
17-23% |
＜1% |
1-2% |
2-4% |