High Temperature gas compression 1

[BenjyMac]

Hi,

Are there gas compressors on the open market (UK if poss) that can fulfil the following duty.

Inlet pressure: ~20 mbarg
Oulet pressure: 2,000mbarg

Flow: 2,500 Nm3/h

Fluid: off gas (51% N2, 18% CO, 12% CO2, 17% H2, 2% CH4)

Inlet temperature 500 deg.C

Thanks in anticipation of a quick reponse.

 

[zdas04]

100 ratios? Stack gas that starts at 20 bar? 500C inlet? Moving 2,500 Nm^3/hr?

I don't think you're going to have any luck on so may levels.

David Simpson, PE
MuleShoe Engineering

http://www.muleshoe-eng.com

 

[DrenthHolland]

Hi,

You can check the next company (also UK):

http://www.industrial-turbines.siemens.com/.

They are specialists in Turbomachinery.

Hans

 

[25362]

zdas4: the compression ratio mentioned by BenjyMac, is just about (2+1)/(1+0.02)=2.94. Isn't it ?

 

[zdas04]

Is "m" mili? In oil and gas it is "thousand" (Roman numeral M). Mili makes more sense.

David Simpson, PE
MuleShoe Engineering

http://www.muleshoe-eng.com

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

The Plural of "anecdote" is not "data"

 

[25362]

Yes, 1 millibar (1/1000 bar) generally used as unit of atmospheric pressure equals 1000 dynes per square centimeter = 100 Pa.
Thus the pressure ratio, in this case, would be:
(1.01325+2)/(1.01325+0.02)=2.92

 

[BenjyMac]

25362:

Thanks for explaining it to zdas04. You are right 'm' is milli the same as 'mm' is millimeter. I knew the compression ratio wasn't onerous but the temperature is what I wasn't sure about as to whether any compressors could accept such high temperature.

Many thanks for the responses.

 

[gurmeet2003]

You will not find a compressor that can handle the high suction temperature indicated. The reason is the sealing elements. If metalic seals are used then a lubricant is required. And I do not know of a lubricant that can survive at 500 deg. C. On the other hand if a plastic seal is used, there is no plastic available that can survive at this temperature. Therefore it looks like that the gas will have to be cooled before being sent to the compressor.

Gurmeet

 

[pmover]

to supplement gurmeet2003 comments...

if using process fluid as the sealing/barrier fluid, then perhaps cooling that portion of gas used for sealing purposes is all that is needed. of course, a backup fluid will be needed (N2 ?).

yes, zdas04, one must be cognizant of postings with metric units.

-pmover

 

[zdas04]

I think I need a metric bablefish

David

 

[crjones]

You might look at a blower company. Probably a two stage unit.