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Click the number：5385 Entry time：2015/2/27 【Print this page】 【Close】
Raschig Ring
Raschig Ring
中文名：拉西环
1. Metal Raschig Ring
Since 1914 when F.Raschig invented this type of ring for tower packing, Metallic Raschig Ring used in petrochemical industry has been developed extensively. The R-ring is now used in many applications, but particularly in supporting catalyst beds.
Metallic Raschig Rings are available in a wide range of carbon and stainless steels, 304, 304L, 410,316, 316L etc.
Geometric Parameters
|
Size |
Bulk density |
Quantity |
Specific surface area |
Void volume |
|
mm |
kg/m3 |
n/m3 |
m2/m3 |
m3/m3 |
|
15×15×0.3 |
379 |
230000 |
350 |
95 |
|
25×25×0.4 |
318 |
51000 |
216 |
96 |
|
25×25×0.5 |
400 |
51000 |
220 |
95 |
|
35×35×0.8 |
430 |
19000 |
150 |
93 |
|
50×50×0.5 |
203 |
6500 |
106 |
97.4 |
|
50×50×0.7 |
285 |
6500 |
108 |
96.4 |
|
50×50×0.8 |
325 |
7000 |
109 |
95 |
|
76×76×0.8 |
212 |
1830 |
69 |
97.3 |
|
80×80×1.2 |
300 |
1600 |
65 |
96 |
|
90×90×1.0 |
236 |
1160 |
62 |
|
2. Plastic Raschig Ring
There are kinds of materials for Plastic Raschig Ring, such as PP, PVC, CPVC, PVDF, PTFE, PE.
Characteristic:
a. Low pressure drop, excellent distribution,large void space, large flux, high mass-transfer effiency, low energy consumption, etc.Operational temperature range: Up to +150℃
b. Widely used in separation and absorption process, reducing pressure for device, deviating sulfur for the systems. Itcan easily isolate Ethylbenzene, Toluene, Trimenthypentane etc.
c. Package: Enhanced plastic super bag in jumbo bag, wooden case or carton. Other packing methord are available upon customers’ request.
Technical Data
|
Size |
Bulk Density |
Quantity |
Void Volume |
Surface Area |
|
mm |
kg/m3 |
n/m3 |
% |
m2/m3 |
|
15*15*0.3 |
385 |
240000 |
94 |
360 |
|
25*25*0.3 |
231 |
51000 |
96 |
215 |
|
38*38*0.4 |
207 |
14500 |
96 |
135 |
|
50*50*0.5 |
200 |
6300 |
96 |
105 |
|
80*80*0.8 |
200 |
1600 |
96 |
80 |
3. Ceramic Raschig Ring
Raschig ring is a form of random packing and is used in commercial fractional distillation columns to reduce pressure loss (versus using trays), while maintaining good efficiency and economy. Raschig ring is proven in a wide range of mass transfer applications. Raschig ring structure provides one of the largest surface areas among tower packing options and handles heavy loading, process upsets and temperature shocks.
Physical Properties
|
Size |
DxHxT mm |
Specific area m2m3 |
Void volume m3m3 |
Number pc./m3 |
Bulk density kg/m3 |
Dry packing factor m-1 |
|
1/4''(6mm) |
6x6x2 |
789 |
0.73 |
3,110,000 |
880 |
2030 |
|
2/5''(10mm) |
10x10x2 |
440 |
0.7 |
720,000 |
800 |
1280 |
|
3/5''(15mm) |
15x15x2 |
330 |
0.7 |
250,000 |
750 |
960 |
|
1''(25mm) |
25x25x2.5 |
190 |
0.78 |
50,000 |
650 |
400 |
|
1.4''(35mm) |
35x35x4 |
150 |
0.76 |
18,500 |
620 |
320 |
|
1.6''(40mm) |
40x40x5 |
126 |
0.75 |
13,200 |
600 |
305 |
|
2''(50mm) |
50x50x5 |
93 |
0.81 |
6,400 |
660 |
177 |
|
3''(80mm) |
80x80x9.5 |
90 |
0.68 |
1,950 |
560 |
234 |
|
4''(100mm) |
100x100x10 |
70 |
0.7 |
1,000 |
700 |
172 |
|
6''(150mm) |
150x150x15 |
50 |
0.68 |
295 |
790 |
142 |
Chemical Composition
|
SiO2 |
Al2O3 |
Fe2O3 |
CaO |
K2O+Na2O |
|
＞70% |
17-32% |
＜1% |
1-2% |
2-4% |