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Hi
we are in the process of procuring a new platforming catalyst for UOP ccr .
Since there are quite a few reputed vendors in this field wanted to know the forum's experience on fixing criteria for selection with respect to quality and price. This is required for evaluation of all the vendors under a common platform.
Regards
Sudheer Pai
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Procuring Of Platforming Catalyst For Ccr
Started by sudheer, Sep 29 2007 12:46 AM
2 replies to this topic
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#2
Guest_Mohamed Azlan_*
Guest_Mohamed Azlan_*
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Posted 05 July 2008 - 04:06 AM
Hi Sudheer,
I am a process engineer for the naphtha hydrotreating unit (NHT) and CCR Platforming unit.
I am a new member to this forum. Eventhough this question was posted nearly a year ago, but I would like to just give my opinion on this topic.
For our CCR Platforming unit, among the criteria which we use to evaluate the catalyst are:
1. Start-of-run surface area (new R-264 catalyst from UOP will give about 200 m2/g)
2. End-of-run surface area (this will have an effect on the chloride retention ability of the catalyst)
2. The maximum RON achievable for the reformate at the design throughput
3. The yield characteristic for the reformate.
4. C5+ yield (we want more C5+ yield especially aromatics yield rather than just overall liquid yield)
5. Degree of conversion for heavier paraffins into aromatics.
6. Other catalyst characteristics such as density and activity. The catalyst density is important as higher-density catalyst will reduce the occurrence of pinning and allow a higher throughput for the unit. Higher-activity catalysts, on the other hand, will allow a high conversion to be achieved at a lower WAIT (Weighted Average Inlet Temperature)
These are just a brief aspects that we look at during the purchasing of our catalyst. However, if you are still interested to know in more detail including the values etc, please reply back to let me know. I will then write back to explain in much more detail. Thank you.
-Mohamed Azlan-
I am a process engineer for the naphtha hydrotreating unit (NHT) and CCR Platforming unit.
I am a new member to this forum. Eventhough this question was posted nearly a year ago, but I would like to just give my opinion on this topic.
For our CCR Platforming unit, among the criteria which we use to evaluate the catalyst are:
1. Start-of-run surface area (new R-264 catalyst from UOP will give about 200 m2/g)
2. End-of-run surface area (this will have an effect on the chloride retention ability of the catalyst)
2. The maximum RON achievable for the reformate at the design throughput
3. The yield characteristic for the reformate.
4. C5+ yield (we want more C5+ yield especially aromatics yield rather than just overall liquid yield)
5. Degree of conversion for heavier paraffins into aromatics.
6. Other catalyst characteristics such as density and activity. The catalyst density is important as higher-density catalyst will reduce the occurrence of pinning and allow a higher throughput for the unit. Higher-activity catalysts, on the other hand, will allow a high conversion to be achieved at a lower WAIT (Weighted Average Inlet Temperature)
These are just a brief aspects that we look at during the purchasing of our catalyst. However, if you are still interested to know in more detail including the values etc, please reply back to let me know. I will then write back to explain in much more detail. Thank you.
-Mohamed Azlan-
#3
Zauberberg
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- ChE Plus Subscriber
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Posted 12 July 2008 - 02:41 AM
Excellent reply. I would also like to add few more points which are related to overall economy and schedulling/processing parameters, because it has a huge effect on expected (desired) performance of Reformer unit:
1. The yield of aromatic compounds should not be fixed as "high as possible" due to environmental regulations - it strongly depends on refinery gasoline pool and other available components for Mogas blending. In other words, you don't need excessive aromatic naphtha which you cannot use for blending - unless you have Aromatic Extraction Unit for benzene, toluene and xylene production.
2. Type of feed being processed in reformer unit, which affects hydrogen production and overall hydrogen balance in refinery.
1. The yield of aromatic compounds should not be fixed as "high as possible" due to environmental regulations - it strongly depends on refinery gasoline pool and other available components for Mogas blending. In other words, you don't need excessive aromatic naphtha which you cannot use for blending - unless you have Aromatic Extraction Unit for benzene, toluene and xylene production.
2. Type of feed being processed in reformer unit, which affects hydrogen production and overall hydrogen balance in refinery.
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