What are the measures to prevent pulverization of the reforming catalyst?
1) The catalyst should be fully dried before use.
2) In normal production, temperature, pressure, water-carbon ratio should be strictly controlled, following the principle of fine-tuning and preventing barbaric operation. Whether it is start-up, shutdown or normal production, the speed of pressure increase and decrease should be strictly required ≤ 0.5MPa/h. Again, the speed of temperature increase and decrease is too fast, whether it is temperature decrease or temperature increase, the speed of temperature increase and decrease should be strictly required ≤ 30℃/h. Conversion and temperature increase and decrease speeds are shown in the following table:
Reforming catalyst heating rate:
|
Temperature rise range（℃） |
Heating speed（℃/h） |
Time（h） |
Accrued time（h） |
|
Ordinary temperatures~120 |
15~20 |
6 |
6 |
|
120 |
Thermostatic |
12 |
18 |
|
120~210 |
15~20 |
5 |
23 |
|
210 |
Thermostatic |
12 |
35 |
|
210~500 |
40~50 |
7 |
42 |
|
500 |
Thermostatic |
12 |
54 |
|
500~600 |
50 |
2 |
56 |
|
600~800 |
50 |
4 |
60 |
|
800 |
Thermostatic |
24 |
84 |
The constant temperature of 120℃ is the dehydration time of the reforming catalyst, and the constant temperature of 210℃ is the further dehydration time of the reforming catalyst.
3) Reduce the number of starts and stops and extend the operation cycle.
