Coke Oven Gas Hydrogenation Catalyst COG-1
*Hydrogenation catalyst
*Low pressure drop
*Large surface area
*High quality
Coke Oven Gas Hydrogenation Catalyst COG-1
1.Product features and scope of application
Coke oven off-gas hydrogenation catalyst COG-1 is an iron-molybdenum catalyst applicable to hydrodesulfurization
of organic sulfur in coke oven off-gas containing ≤10% CO and about 5% olefins. Total organic sulfur conversion of
over 99% can be attained for coke oven off-gas containing 100 to 250mg/ Nm3 organic sulfur under following
condition: GHSV 500 to 1000h-1,temperature 380-450°C, pressure 1.0-2.0MPa(g).
Main reactions involved are as follows:
COS+H2 = CO+H2S
RSH+H2 = RH+H2S
R1SR2+2H2 = R1H+R2H+H2S
R1SSR2+3H2 = R1H+R2H+2H2S
C4H4S+4H2 = C4H10+H2S
2. Physical properties
| Pale-brown cylinders |
Particle size /mm | Φ6×4-6mm |
Bulk density/kg·L-1 | 0.9-1.2 kg/L |
3. Quality Standard
| min150 N |
Loss on Attrition | max5% |
Activity test: there is still no industry standard for the catalyst. Activity of the catalyst is tested according to the
standard of similar organic sulfur hydrogenation catalyst on a impulse- micro- reactor chromatography testing
apparatus at atmospheric pressure and 380°C. Thiophene conversion should be above 70%.
4. Operation condition
Feed:coke oven off-gas containing 100-250mg/Nm3 organic sulfur, 10%CO and about 5% olefins.
| atmospheric to 2.0 MPa |
Temperature | 380-420°C |
GHSV | 500-1000 h-1 |
H2S in feed gas | >100ppm |
NH3 in feed gas | ≤100 ppm |
5. Storage, transportation and loading
Storage and transportation:
(1) The catalyst is packed in air-tight iron barrel lined inside with plastic bags. It should be stored in dry and well-ventilated place.
(2) Avoid tumbling and collision during transportation to prevent breakage of the catalyst
Loading:
(1) The catalyst is loaded in three sections in the reactor. φ10mm inert balls are installed both at the top and bottom
and among the sections. The catalyst and inert balls are separated by stainless wire net of smaller mesh size than
the catalyst.
(2) Clean the reactor of any debris and inspect soundness of facilities and valves connected to the reactor.
(3) Determine depth of each section according to total amount of the catalyst. Install inert balls and stainless wire
net at the bottom . The net should be tightly overlapped around the margin to avoid leakage of the catalyst.
(4) Screen out any dust in the catalyst before loading. Drop the catalyst slowly from a small barrel at lowest possible
height ( less than 1 m) into the reactor and disperse the particles uniformly in the bed to ensure well-distributed gas
flow during operation.
(5) In-situ loading operator should stand upon wooden plate without standing directly upon the catalyst.
(6) Level off top surface of the bed at the end of loading. Withdraw all the tools from the reactor and close all the
manholes to prevent moisture invasion.
(7) The loading operators should be properly equipped with necessary protective means.