Naphtha Reforming Catalysts
1.Naphtha reforming catalysts can be divided into semi-regenerative reforming and continuous regenerative reforming kind.
2.It has high efficiency, selectivity, specificity and a certain activation temperature.
3.Changing it at the right time to maximize the device
Product Introduction
Catalytic reforming of naphtha is an important petroleum refining process. After naphtha is catalytically converted, the resulting reforming oil can be used as a blending component of low-sulfur, low-olefin content and high-octane gasoline, or as an aromatic hydrocarbon feedstock. , The production of benzene, toluene and xylene. The high-quality hydrogen by-product in the reforming process has the advantages of high purity and low cost, and is the most important source of hydrogen for the refinery hydrogenation unit.
Naphtha reforming catalysts can be divided into semi-regenerative reforming and continuous regenerative reforming kind. Among them, continuous regenerative reforming has the advantages of high liquid yield, high product octane number, high hydrogen yield and long continuous operation period of the unit. , which is becoming the preferred process technology for new plants
Technical Index:
|
A |
B |
C |
D |
|
|
Index |
Industrial Standard |
High Activity High Severity |
High Yield |
High Yield |
|
ABD(g/cc) |
0.56 |
0.68 |
0.58 |
0.68 |
|
Diameter(mm) |
1.6 |
1.6 |
1.6 |
1.6 |
|
Shape |
Sphere |
Sphere |
Sphere |
Sphere |
|
Surface Area(m2/g) |
180 |
180 |
180 |
180 |
|
Average Crushing Strength(N) |
50 |
75 |
50 |
75 |
|
Pt(Wt%) |
0.29 |
0.25 |
0.29 |
0.25 |
|
Additive |
No |
No |
Yes |
Yes |
Appropriate time of replacing naphtha reforming catalysts
① The time for changing the CCR catalyst is not static, there is no fixed running time or cycle
② It is meaningful to judge the time of changing the caltalyst through economic evaluation
③ Mastering the correct method to continuously regenerate the catalyst is the key to prolonging the service life of the catalyst
④ Changing it at the right time to maximize the device
⑤ Evaluate the necessity of changing it is needed to carry out an economic analysis of the return on investment of the agent
⑥ Similar to other capital investment projects
⑦ Quantitative analysis of performance between new and existing catalysts
|
Catalyst Grade |
Relative Bulk Density |
Composation |
W(Pt)/% |
Pressure/MPa |
Marks |
|
CR-601 |
High |
Pt-Sn-Additive |
0.25 |
0.3-0.6 |
Producing Gasoline |
|
CR-607 |
High |
Pt-Sn-Additive |
0.25 |
0.6-1.2 |
Producing Gasoline |
|
CR-701 |
High |
Pt-Sn-Additive |
0.30 |
0.3-0.6 |
Producing Aromatic Hydrocarbon |
|
CR-707 |
High |
Pt-Sn-Additive |
0.30 |
0.6-1.2 |
Producing Aromatic Hydrocarbon |
|
CR-617 |
High |
Pt-Sn-Additive |
0.29 |
0.3-1.2 |
Other |
|
CR-712 |
High |
Pt-Sn |
0.29 |
0.3-1.2 |
Other |
Several factors that lead to permanent naphtha reforming catalysts damage
- The catalyst support phase structure is destroyed
- Metal poisoning
Depletion of tin and even platinum can occur under extreme regeneration conditions of mishandling
Damaged catalysts cause many problems in reformers
- Low liquid yield of C5+, low yield of aromatics and hydrogen
- Chlorine holding capacity 1 catalyst activity is very poor
- Equipment corrodes and requires frequent replacement of dechlorinating agents
- High dust content and clogged filters
- Sensitive to carbon deposits
A drop in normal specific surface area does not mean the catalyst is damaged
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