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Pall Ring

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%