Catalytic Thermal Cracking CPP Catalyst
1. Catalytic Thermal Cracking CPP Catalyst based on DCC technology, a catalytic thermal cracking(CPP) process for directly producing ethylene and propylene from heavy oil has been developed;
2. Low carbon alkenes, mainly ethylene and propylene, were produced at the reaction temperature of 560~650 ℃;
3. The yield of ethylene and propylene was adjusted by changing the reaction conditions
Product Introduction
Catalytic thermal cracking CPP catalyst he main features of the CPP process are:
The raw material is heavy oil, which broadens the source of ethylene raw materials;
The operation mode is flexible, and the product structure can be adjusted according to needs;
The catalytic reaction and thermal cracking are combined. based dual reactive catalysts.
The catalytic thermal cracking CPP catalyst has high cracking activity, good hydrothermal stability and good antiwear performance.
In the process of CPP reaction, the cracking reaction of alkanes and alkenes with small molecular volume is the main reaction to produce ethylene and propylene. And aromatic, cycloalkanes and other large volume of hydrocarbon molecules reaction is not easy to generate ethylene and propylene, their reaction for the side reaction.
In order to suppress this side reaction and obtain high selectivity of ethylene and propylene, the substrate and pore of the catalyst and the distribution of catalytic acid centers should be unique.
Catalyst Specification:
| Item | Value |
| Specifica Weight(Carbon), % | 0.01 |
| Specific Weight(Na2O), % | 0.14 |
| Specific Weight(Fe), % | 0.48 |
| Specific Weight(Ni), % | 0.15 |
| Active(DMA) | 61 |
| Surface Area, m2·g-1 | 119 |
| Screen | |
| 0~20 μm | 16 |
| 0~40 μm | 64.3 |
| 0~80 μm | 82.5 |
| 0~105 μm | 96.4 |
| 0~149 μm | 96.4 |
| APS/μm | 66.6 |
The catalytic thermal cracking CPP catalyst specific modified oxides to improve the stability of the molecular sieve framework, and adopts high Si/Al ratio shape selective molecular sieve, so it has good thermal and hydrothermal stability. And the equilibrating agent activity can be maintained at about 60 under normal agent consumption.
Using the mass fraction of 45% paraffin oil mixed with 55% vacuum residue as the raw material, the industrial test was carried out under the operating conditions of both ethylene and propylene production.
The yield of ethylene was 13.71%, and the yield of propylene was 21.45%.
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