Thank you guys for your inputs
Can I understand from both of you that a common sump can be used instead of installing pump for each reboiler?
By the way the last project I worked at we used pumps for all condensate generated from reboliers in the plant about total of 2 reboilers. In the current...
Thank you for your contribution
but what I am looking for is the best way of handing the condensate either by pumps or gravity to a sump.
Any advice and previous experience in such service is appreciated.
Cheers
I have got a question regarding the best system of steam condensate generated by distillation column reboilers.
From my experience, centrifugal pump is used to pump the condensate by every reboilerto a collection drum of condensate then to utility for recovery. I heard that a common sump is used...
Thank you checman for your explanation
Actually my question or concern of using ejectors instead of centrifugal pumps in pumping condensate from distillation column reboilers.
From my experience, centrifugal pumps are usually used in such services but I have not seen ejectors that would be not...
I got a question with respect to the control of a condensing/extracting steam turbine (about 65MW) connected to a process compressor and driven by VHP steam (510 C and 105 barg).
From my little experience in the control scheme of such application, the usual design I have seen is that the...
I would like to know the better from experience the selection between ejectors or pumps in condensate service.
The service is steam condensate generated by reboiler.
I got feedback from one expert engineer that he doesn't recommend having ejectors since they are having frequent problems due to...
That was just a mistake I have made quick estimate and check that is using ethane conversion factor to get MMSCFD from MTPD and check order of magnitude that for the FCC off gas. Keeping in mind the MW difference between the two gas.
Cheers
The conversion factor of 35.9146 is for converting MTPD tp MMSCFD for ethane gas.
e.g. 2880 MTPD of ethane gas is 80 MMSCFD
FCC contains sulphur reachning up to about 100 ppmw H2S and 10 ppmw COS
Cheers
Thank you Buchi for your understanding to the issue posted here
I will look for this standard along with your and the others recommendations, then justifications of having only HIPPS could be found and used to eliminate PSVs and reduce flare load and size as well.
Cheers
Regardless of the question and answers discussed in this post, I realize that experience and knowledgeable people should not be best people but there are some who have bad attitude and not polite in their behaviours.
What I have got from your non professional answers gave me bad impression about...
Hello everybody
I agree with you that the question posted is considered to be simple and basic, but your responses are complicated and there is another way which is much simpler and better.
To convert from MTPD to MMSCFD, a conversion factor of 35.9146 is used as follow :
MTPD / 35.9146 =...
I would like to know that if I have 27 t/h FCC offgas from refinery with 1.1% H2, 13.31% N2, 1.54% CO, 27.48% CH4, 22.94% C2H4, 23.35% C2H6, 2.11% C3H6, 0.4% C3H8, 4.61% C4H8,0.27% iC4H10, 0.27% nC4H10 and 2.63% C5+ (all wt%)
Then how I can find out the following:
1-Flow of FCC in MMSCFD...
It sounds good, but can you give the code which is asking about such requirements of having both HIPPS and PSVs.
The standard we have in my company calls for the need of having both but it doesn't mean that it is 100% true, and it might be changed if there are other codes worldwide allow for...
If I understand your question well, then the following would be the answer:
Double block valves with a check valve in between plus a figure 8 blind.
This what I used to see in most of the utilities connection piping with the process stream piping to avoid contamination of the process.
Cheers
Guidoo
If I know the answer, I wouldn't ask and post this question.
But I am expecting an input and feedback from the members who have an experience with such similar case as I have currently.
Regardless the standards and codes my company is applying for such case that might not be right or good...
Thank you all for your inputs
I agree with what Guidoo has stated regarding this subject.
But still not clear from your explanations if it is a mandatory of having both PSVs as well as HIPPS at the compressor discharge piping.
I am after a way of reducing the flare load in the plant during...
I would like to hear from you about unclear matter to me regarding eliminating PSVs in compressors discharge piping by providing high integrity safety shutdown system.
An example of that PSVs installed in the compressor discharge protecting the compressor from blocked discharge case, the...
Thank you all for the valuable inputs you have posted regarding this subject.
You have almost covered most of the milestones and activities that should be achieved during basic eng. phase of a mega project.
The issue raised here is whether HAZOP is to be a milestone that can be achieved during...
