XR401 Alumina/Titania composite promoted activated alumina catalysts

XR401 Alumina/Titania composite promoted activated alumina catalysts is a promoted activated alumina catalyst than XR102 sulfur recovery claus activated alumina . XR401 Alumina/Titania composite promoted activated alumina catalysts retards the conversion of the sulfide species to sulfur.

XR-401 promoted activated alumina catalyst is a TiO2-Al2O3 catalyst, which surface coated with nanoparticles TiO2. The promoter on XR401 activated aluminaretards the conversion of the sulfide species to sulfur.  The unabated reaction can cause sulfation (sulfur layering) on the surface of the catalyst.  Promoted alumina has also shown improved COS (carbonyl sulfide) decomposition over time.

Claus units are designed to convert H2S and SO2 to elemental sulfur.  However, the catalyst must also have good activity for conversion of CS2 (carbon disulfide) and COS (carbonyl sulfide).  CS2 is a by-product that forms in the reaction furnace from impurities in the acid gas.  COS is formed by the presence of CO2 and CO.  CS2 is harder to convert, as high temperatures are required for the reaction rates.

Claus conversion occurs very quickly in all converter beds, but is incomplete because of equilibrium limitations.  Low temperatures in adsorber beds favor higher conversion.  Lower inlet temperatures are used in successive adsorber reactors to maximize sulfur make.

lHigh activated hydrolytic;

llow activated temperatures;

lStable structure of catalyst;

lGood activated stability;

lBimodal distribution of the pore structure is more available for gas diffusion, and Claus reaction;

lLong life time.

l4-8% TiO2 content

lTemperature: 200 ~ 350 ℃

lPressure: ~ 0.2MPa

lAirspeed: 200 ~ 1000h-1

Item	Unit	Value
Colors and shapes		White spherical
Dimensions	mm	Ф3-5/ Ф4-6
Al2O3%	Wt%	≥90
TiO2%	Wt%	4-8
Specific surface area	m2 / g	≥280
Pore volume	ml / g	0.45-0.50
Bulk density	kg / L	0.65 to 0.80
Crushing force	kg / particle	15/18