2 replies to this topic

[shvet]

Hi forum

 

I'm going to start working on detailed design of Air Separation Unit (ASU).  Products are liquid and gaseous O₂, N₂ and instrument air. All main equipment is completely prefabricated and I only have to interconnect it and provide utilities.  I'm newbie in ASU.  As I've found, there are worth design practices of EIGA (European Industrial Gases Association).  Can anybody share worth practices for liq/gas O₂/N₂?  Materials, distribution systems, safety codes, flamability, and exposion hazard for rich O₂ mixtures?  Any P&IDs of existing facilities?

Edited by Art Montemayor, 02 April 2016 - 10:20 AM.

[Bodhisatya]

Hi forum

 

I'm going to start working on detailed design of Air Separation Unit (ASU). 

 

ASU design is a broad domain.Please elaborate your scope.

 

(a) Whether the Process cycle selection is over,i.e Air flow to Cold Box is fixed,Turbine and MHE thermodynamic performance detailed ?

( B) Are you doing detail enginnering of TSA,Pre Cooling ,Column Design,Back up area,line sizing?

 

EIGA is more than sufficient in directing you to mug up Air Separation Unit practises.Please read those docs properly.

 

In addition please download Whitepaper's doc on Reboiler Condenser safety.

 

Sharing P&ID would not be possible due to confidential clauses.

 

Bodhisatya

[shvet]

 

ASU design is a broad domain.Please elaborate your scope.

 

 

Preliminary design (feasibility study)

1. O2 25barg 10'000 Nm3/h

2. O2 5 barg 10'000 Nm3/h

3. N2 27 barg  7'000 Nm3/h

4. N2 5 barg 13'000 Nm3/h

5. N2 165 barg 300 Nm3/h

6. Liquid N2 100 kg/h

7. Liquid O2 - probably

8. Instrument air 5 barg 20'000 Nm3/h

 

 

 

(a) Whether the Process cycle selection is over,i.e Air flow to Cold Box is fixed,Turbine and MHE thermodynamic performance detailed ?

( Are you doing detail enginnering of TSA,Pre Cooling ,Column Design,Back up area,line sizing?

 

Feasibility study, contract, building area are over.

FEED, basic design and complex equipment are supplier responsability (boundaries of scope of supply isn't defined yet). I only have to comply local codes, obtain regulatory authority approvals, design auxilliary equipment and communications. I would like to prepare and get to know potential problems. Mmmm, you know - just to put right questions.

 

 

 

EIGA is more than sufficient in directing you to mug up Air Separation Unit practises.Please read those docs properly.

 

OK, thanks

 

 

 

Sharing P&ID would not be possible due to confidential clauses.

 

 

Bad, it might be useful

Edited by shvet, 03 April 2016 - 12:00 AM.