1. Application According to that light distillate has different features from different refinery depends on raw material and operation condition, HHLDS series Hydrotreating Catalyst is specially developed for reforming pre-hydrogenation, solvent oil hydrotreating and Kerosene hydrotreating. 2. Technology features There are 3 types catalyst taking modified alumina as carrier. HHLDS-1 has excellent hydrodesulfurization, high crush strength and small bulk density, specially suitable for light distillate of high sulfur. With low pressure, low hydrogen/oil ratio, high space velocity, this catalyst could produce high quality reforming material with sulfur+nitrogen<0.5ppm. HHLDS-2 also could remove nitrogen besides sulfur, which is suitable for hydrotreating process of light distillate specially for coking naphtha, pyrolysisgasoline and high nitrogen naphtha. This catalyst could work at 5℃ lower temperature than similar types of catalyst. HHLDS-3 has large pore volume, large surface area to remove sulfur and nitrogen, which has working well for reforming prehydrogenation and coking gasoline hydrotreating process.
3. Chemical Composition and Physical Properties
Catalyst type
HHLDS-1
HHLDS-2
HHLDS-3
Active metal
Mo-Co
Mo-Ni
Mo-Ni-Co
Shape
sphere
trefoil
Diameter, mm
f1.5~2.5
Pore volume,mL.g-1
≧0.40
≧0.42
Surface area, m2.g-1
≧200
≧220
Crush strength, N/pcs
≧40
≧140
Bulk density, g/cm
0.68~0.78
0.65~0.75
4. Operation Condition
Reforming Prehydrogenation
Reaction pressure
1.6～2.4 MPa
Temperature
270～320 ℃
Volume space velocity
6.0～8.0 h-1
Hydrogen/oil volume ratio
80～150
Coking naphtha and pyrolysis gasoline Hydrotreating
3.0～4.0 MPa
180～280 ℃
1.6～4.0 h-1
300～600
5. Operation Example of Reforming pre-hydrogenation under high space velocity
Item Example 1 Example 2 Raw material Product Raw material Product Technical condition Hydrogen partial pressure, MPa 1.6 1.6 Volume space velocity, h-1 8.0 6.0 Hydrogen/oil ratio 80 100 Operation condition, ℃ fiducial temperature fiducial temperature Oil properties Raw material Hydrotreated oil Raw material Hydrotreated oil Sulfur, mg/g 702 <0.5 815 <0.5 Nitrogen, mg/g 1.5 <0.5 1.0 <0.5
Item
Example 1
Example 2
Raw material
Product
Technical condition
Hydrogen partial pressure, MPa
1.6
Volume space velocity, h-1
8.0
6.0
Hydrogen/oil ratio
80
100
Operation condition, ℃
fiducial temperature
Oil properties
Hydrotreated oil
Sulfur, mg/g
702
<0.5
815
Nitrogen, mg/g
1.5
1.0
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