Claus Catalysts

The Clause process is used by the Sulfur Recovery Industry which converts Hydrogen Sulfide into elemental Sulfur and water. The "sour" natural gases have plenty of hydrogen sulfide within and if such gases are burned as fuel, Sulfide escapes, resulting in air pollution and damage to our tender enviornment. It has become an inevitable demand of mankind to convert maximum quantity of Sulfur from "sour" gas.

Activated Alumina is the most widely used Claus Catalyst which contains a large number of catalytically active surface sites that absorbs Hydrogen Sulfide (H2S) and Sulfur Dioxide (SO2) for subsequent reaction to yield elemental Sulfur.

In many acid gas streams, Sulfur is present in various compounds such as H2S, COS, CS2 etc. Some of them may not be present inthe feed gas but cumbustion of H2S in the presence of CO2 or hydrocarbons could result the formation of COS/CS2. These compounds must be converted to ensure proper Sulfur conversion. Since the decomposition rate of these compounds are at lower rate than that of H2S/SO2 reaction, a highly active catalyst is required. Sulfation can be another problem as it reduces surface area and hence the deactivation of catalyst.

We have developed highly efficient Claus Process Catalysts that will suit all these application.

Our high performance Claus Catalysts are ideal for Claus units in natural gas plants, oil refineries, coke plants, tail gas units.

Specifications

Physical Characteristics

Code

Use

PGA94

Low pressure high volume drying

PGA94.1

High pressure low volume drying

PGA93

Standard Desiccant

1.Size

(mm)

3-5, 5-7 3-5, 5-7 2-5
2.Bulk Density

(Kg/lit)

0.90 ± 0.05 0.80±0.05 0.74-0.83
3.Crush Strength

Min(Kg)

12 12 10
4.Attrition Loss

Max(wt %)

0.3 0.3 0.3
5.Water Adsorption Capacity at 60% RH & 300C

Min(wt %)

15 20 20
6.Surface Area

Min(m2/gm)

250 350 280
7.Total Pore Volume

(cc/gm)

0.35-0.45 0.55-0.66 0.55-0.66
Chemical Composition*
Al2O3

Min(%)

94.0 94.0 93.5
Na2O

Max(%)

0.30 0.30 0.50
SiO2

Max(%)

0.20 0.20 0.05
Fe2O3

Max(%)

0.05 0.05 0.02
Loss on Ignition at 10000C

Max(%)

5.0 6.5 6.00

*Above are typical specifications. Crushing strength increases with size. We could manufacture to customers own specifications. The figures indicated are applicable to 3.5mm dia balls

Physical Characteristics
Code PGC95
1. Size

(mm)

4.8 dia. Sphere
2. Bulk Density

(Kg/m3)

656
3. Crush Strength

Min(Kg)

18
4. Attrition Loss

Max(wt%)

0.1
5. Surface Area

Min(m3/gm)

335
6.Macro Porosity> 750Å (cc/gm)0.18
Chemical Composition(wt % on dry basis)*
Al2O3

Min

94.6
Na2O

Max

0.35
SiO2

Max

0.02
Fe2O3

Max

0.02
Loss on Ignition at 10000C

Max

5.0

*Above are typical specifications. Crushing strength increases with size. We could supply to customers specifications. The figures indicated are applicable to 4.8mm dia spheres