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Here you will find information on many different types of sealing gaskets, packings and materials which are in common used in oil chemical, metallurgy, electric power, ship-building, paper making and fertilizer industries today.
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Rashing ring (Random packing)

Ceramic random(tower)packings
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.
Ceramic saddles
Ceramic saddles for chemical and petrochemical
Application of saddles
Saddles are used in two main fields but have different properties depending on the application.One fields is the chemical and petrochemical industries and another is in environmental ares such as RTO equipment.Data of Saddles for Chemical and Petrochemical


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

Porosity(%)

<1

Mohs hardness(scale)

>6.5

Thermal Conductivity(w/m.k)

0.9-1.0

Specific heat (j/kg )

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

121.0

201.4

101.0

2.00.45

102.0

5/8

16mm

161.0

241.5

121.0

2.00.5

122.0

3/4

19mm

191.5

282.0

141.0

2.50.5

142.0

1

25mm

251.5

382.0

191.0

3.00.5

202.0

1.5

38mm

382.0

603.0

301.5

4.01.0

302.5

2

50mm

502.5

804.0

402.0

5.01.0

403.0

3

76mm

764.0

1144.0

573.0

9.01.0

574.0

 
Ceramic saddles for RTO
These saddles are mostly used as heat transfer media and are higher density and require good high temperature resistance.
 

Table-1 chemical composition

SiO2

Al2O3

Fe2O3

Cao

K2O+Na2O

>70%

23-30%

<1%

1-2%

2-4%

Table-2 physical property

INDEX

VALUE

Specific gravity

2.2-2.4

Water absorption,%

<0.5

Acid-resisting strength,%Wt.Loss

<4

Firing temperature,

1280-1320

Softening point,

>1400

Density,kg/m3

2350

Normalsize

Approx.weight
Kg/m3

Surface area

Void fraction(%)

Packing factor(1/ft)

ft2/ft3

m2/ m3

1/2

720

190

623

 

 

3/4

688

102

334

 

 

1

688

77

253

 

 

1.5

640

50

164

 

 

2

577

35

115

 

 

3

623

28

92

75.5

24

Table-3 Specification of saddles

Normal size

Diameter of Neck D

Outside Diameter L

Height H

Wall hickness T

WidthW

1/2

12mm

121.0

201.4

101.0

2.00.45

102.0

5/8

16mm

161.0

241.5

121.0

2.00.5

122.0

3/4

19mm

191.5

282.0

141.0

2.50.5

142.0

1

25mm

251.5

382.0

191.0

3.00.5

202.0

1.5

38mm

382.0

6.03.0

301.5

4.01.0

302.5

2

50mm

502.5

804.0

402.0

5.01.0

403.0

3

76mm

764.0

1144.0

573.0

9.01.0

574.0

These saddles have excellent resistance to acids except in the case of hydrofluoric acid.The saddles softening point is 1400 min,and they show good thermal shock resistance during repeated cycling between 20 and 820 .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 shipment
For each sample selected,heat it up to and maintain them at this temperature for 30 minutes
Drop the hot pieces into cold 20 water
Repeat 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 lessthan eight(8%)percent.
Ceramic Super saddles

Chemical composition

Composition

Value

Composition

Value

SiO2

>69%

CaO

<0.25%

Al2O3

15-23%

MgO

<0.2%

SiO2+Al2O3

>92%

K2O+Na2O

2-4%

Fe2O3

<1%

Other

<1%

Physical properties

Index

Unit

Value

Porosity

Vol%

1

Specific heat

KJ/Kg

840-900

Crush strength

N /mm2

390-420

Crush strength

g/cm3

2.3-2.45

Acid Resistance

%

99.98

Firing temperature

1280 to 1320

Softening point

>1400

Density

Kg/m3

2300-2400

Water absorption

%

<0.2

Thermal Expansion

10-6mm/mm

4.7

Hardness

Mohr Scale

7-8

Comprehensive strength

Newtons

5600

Shock strength

Kgf.cm/cm3

1.0-1.5

Geometric properties

Normal size

Approx.Weight

Surface Area

Void Fraction(%)

Dry Packing factor(m-1)

1b/ft3

Kg/m3

ft2/ft3

m2/m3

1

25mm

40

645

79.5

260

77

570

1.5

38mm

37.5

600

64

210

78

430

2

50mm

35.6

570

42.8

140

79

277

3

76mm

36

580

32

105

-

-

Ceramic Super saddles
Technical data of ceramic Raschig rings

Specifications
(mm)

D*H*Q
mm

Specific surface(m2/m3)

VoidVolume
(m3/m3)

BulkNumber
(n/m3)

Bulk density
(kg/m3)

Dry packing
(factorm-1)

6

6*6*2

789

0.73

3110000

737

2030

10

10*10*2

440

0.70

720000

700

1280

15

15*15*2

330

0.70

250000

690

960

16

16*16*2

305

0.73

192500

730

784

25

25*25*2.5

190

0.78

50000

580

400

35

35*35*4

150

0.76

18500

581

320

40

40*40*5

126

0.75

13200

580

305

50

50*50*5

93

0.81

6400

528

177

80

80*80*9.5

90

0.68

1950

500

234

100

100*100*10

70

0.70

1000

700

172

150

150*150*15

50

0.68

295

790

142

Ceramic cross-partition Ring
Technical data

Specifications
(mm)

OD*ID*H*Q
(mm)

SpecificS
urfacearea
(m2/m3)

VoidVolume
(m3/m3)

BulkNumber
(n/m3)

BulkDensity
(kg/m3)

Dry packing
(factorm-1)

50

50*40*50*5

145

0.50

6400

600

565

80

80*64*80*8

120

0.56

1950

820

356

100

100*80*100*10

110

0.53

1000

850

252

120

120*96*120*12

75

0.55

370

860

146

150

150*120*150*15

60

0.58

295

980

101

Pall rings
Ceramic pall rings

Specifications
(mm)

OD*ID*H*Q
(mm)

SpecificS
urfacearea
(m2/m3)

VoidVolume
(m3/m3)

BulkNumber
(n/m3)

BulkDensity
(kg/m3)

Dry packing
(factorm-1)

25

25*25*3.0

220

0.75

50000

600

565

38

38*38*4

150

0.78

13400

540

356

50

50*50*5

120

0.78

6400

555

252

80

80*80*8

75

0.80

1950

520

146

 

Cascade cascade-mini Rings

Our Size
(mm)

D*H*T
(mm)

Specific Surface
(m2/m3)

Void volume
(m3/m3)

Bulk density
(n/m3)

Package density
(kg/m3)

25

25*20*3

270

0.74

74000

624

50

50*30*5

108.8

0.787

9091

516

76

76*45*7

63.4

0.795

2517

426

   
 
Contact Information
Company:

Cixi Dongfeng Sealing & packing co., Ltd

Address: No.225,Jinsha Road,Cixi city,NingboChina
P.C: 315300
Tel: 86-574-63225670,63225671,63225672,63226625
Fax: 86-574-63226688
Url: www.chinaptfe.com
E-mail: sales@chinaptfe.com
xiaojun@chinaptfe.com