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I am working at UOP Cyclemax CCR Platforming Unit having R-134 Catalyst. We are facing problem of high HCL in recycle gas. Can Anybody who has worked on same CCR Unit with R-134 Catalyst, share his experience?

Additional:
Thanks for responding. 1- Our stripper operation is OK regarding reflux ratio & bottom temperature, but the question is if Organic Chlorides are slipping from stripper, then Chloride level on spent catalyst in Platformer Reactors should also increase with high HCL in recycle gas that is not in our case. 2- We are trying to maintain Chloride level b/w 1.1~1.3 wt% by injecting PCE (perchloroethylene) more than design in oxychlorination zone but result always remained b/w 1.1~1.20 wt% on regenerated catalyst & 0.90~1.0 wt% on spent catalyst. Surface area value of Catalyst about 6 months ago was 152 m2/gm while we have changed our whole catalyst in last Turn Around in March,2012 & total 215 regeneration cycles have passed. 3- We have already changed reduction zone vent from upstream of product separator to upstream of Net Gas Compressor. Waiting for your valuable next response.
 
Answers
17/04/2020 A: Nada Omar, Refineries , byksa87@gmail.com
Hi all,
I have one quick question for CCR operation with Axens technology,
Is there any way for online cleaning a CCR regenerator without opening it?
Your prompt response will be highly appreciated
07/10/2014 A: Mohammad Hoseinpour, Baorco, m.hpour55@gmail.com
You should check cl/h2o balance,probably the moisture in recycle gas is more than 30 ppm
17/09/2014 A: K Subash, Indian Oil Corporation Limited, sansub2@gmail.com
Based on the experience I have in handling an Axens CCR, I would suggest to check the moisture content in the feed and in the recycle gas. Typical recycle gas moisture content will be in the range of 25-30 ppm. Do you have a recycle gas drier that is in line to remove moisture form part of your recycle gas? If so may check on the performance of the drier.
Also check if your HCl Dragger tubes are within their active life period.
05/09/2014 A: Farid Q Q, Indian oil corporation Ltd, faridulqadar@gmail.com
You need to find answers to following questions to pin point the root cause :-
1. Is your hydrotreater reactor and stripper operation steady to ensure chlorides are not slipping into Platformer? Chloride slippage can be a cause. check your stripper bottom chloride results.
2. For R-134 series are you maintaining 1.1-1.3 wt% chloride on the catalyst surface by chloride injection in oxychlorination zone? If results show that chloride conc. on catalyst is higher it will ultimately result in higher HCl in recycle gas. Also as the catalyst ages ( reduced surface area ) chloride dosing has to be increased to offset Pt agglomeration and restore proper acidic activity. This will also result in increased HCl in recycle gas. For surface area values as low as 120 m2/gm you may experience HCl levels in recycle gas to the tune of 6-8 ppm with increased chloride dosing to maintain optimum catalyst performance.
3. Also please confirm where your reduction zone vent gas is routed to? This stream contains high HCl levels ( can be in the range of 20-40 ppmv ), routing of this stream upstream of Platformer separator can also jack up the HCl conc. in the recycle gas.