Solid Phosphoric Acid Catalyst
1. Solid phosphoric acid catalyst is mainly used for the oligomerization of propylene to produce nonene, dodecene, and carbon tetraolefins;
2. Stacking to produce high-octane gasoline;
3. It can also be used to produce cumene by alkylation of benzene and propylene.
Product Introduction
The solid phosphoric acid catalyst is mainly used for the oligomerization of propylene to produce nonene and dodecene, and the superposition of carbon tetraolefins to produce high-octane gasoline, and it can also be used for the alkenization of benzene and propylene to produce cumene, etc.
Solid phosphoric acid catalyst has the characteristics of good catalytic activity, high oligomer selectivity and strength, strong mud resistance, long service life and wide application range.
It's performance has reached the advanced level of similar catalysts at home and abroad. The solid phosphoric acid catalyst produced by AVANT is currently mainly exported to foreign countries, and has been successfully applied in many sets of industrial devices around the world.
Solid phosphoric acid catalysts are widely used in catalysis, propylene oligomerization and benzene alkylation reactions. It is generally believed that the active component of the solid phosphoric acid catalyst is the free phosphoric acid on the surface of the catalyst, which belongs to the protonic acid catalyst.
The activity of solid phosphoric acid catalyst is not only related to the total amount of free acid, but also related to the acid strength distribution of the catalyst.
Technical index:
| Appearance | White or off-white cylindrical strips |
| Size, mm | Φ(6±0.5)×(5-25) |
| Crushing strength, N | ≥ 200 |
| Bulk density, kg/L | 0.9-1.1 |
| P2O5, % | ≥ 60 |
| Free acid, % | ≥ 15 |
Refer to the use of process conditions:
| Pressure, Mpa | 3.0-5.0 |
| Temperature, ℃ | 160-230 |
| liquid volume space velocity, hr-1 | 2.0 |
| Raw material | Olefins is 40-55%, the others are alkanes. |
| Outcome | Alkanes conversion rate ≥ 80%, total olefin selectivity ≥ 80% |
Oligomerization catalytic activity: propylene single-pass conversion rate ≥ 76%(mass), nonene plus dodecene selectivity ≥ 80%(mass), adjustable range(mass ratio) of dodecene to nonene selectivity ratio 0.2～0.65, catalyst liquid yield ≥ 700 kg/kg.
Evaluation conditions: the reaction temperature is 160-195°C at the inlet, 180-210°C at the outlet; the reaction pressure is 4.5-5.5 MPa, the space velocity of the feed liquid in the reactor is 2-5 h-1, and the concentration of propylene in the feed is 45%-60%(mass ).
Catalytic activity for alkylation reaction: propylene single-pass conversion rate ≥ 80%(mass), cumene selectivity 93%-95%(mass), cumene liquid yield ≥ 700 kg/kg.
Evaluation conditions: the reaction temperature is 165-200°C at the inlet, 185-215°C at the outlet; the reaction pressure is 2.5-4.0 MPa, the liquid space velocity is 3-4 h-1, and the catalyst space-time yield is 0.8-1.2 kg/(kg·h).
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