Hydraulic Compressors
Hydraulic Compressors
(OP)
I am interested in the CNG compressor technology utilizing hydraulic compression. i currently build cng stations in the midwest utilizing atlas copco, arial compressors xebec gas dryers ect. I am a GC not an engineer! i have been reading about hydraulic compressors like these http://www.sicom-compressori.com but can not find anyone in the states that have one. I am looking into it for the operational benefits ie..oil free, lower operations and maintenance cost. I will be looking for a consultant to design a compressor for a specialty application that will meet these specs
Natural Gas compression
oil free
inlet 15 to 30 psi
outlet pressure 500 to 700 psi
flow rate 350 scfm
I like the thought of hydraulic compression from a maintenance stand point, but would be interested in a centrifuge or rotary screw compressor as well. Of course what i am wanting is to get to a price point..I would have the ability to assemble the compressor...at cost price point of 55 to 75K
Am I going in the right direction? or am I approaching this from the wrong angle?
Natural Gas compression
oil free
inlet 15 to 30 psi
outlet pressure 500 to 700 psi
flow rate 350 scfm
I like the thought of hydraulic compression from a maintenance stand point, but would be interested in a centrifuge or rotary screw compressor as well. Of course what i am wanting is to get to a price point..I would have the ability to assemble the compressor...at cost price point of 55 to 75K
Am I going in the right direction? or am I approaching this from the wrong angle?





RE: Hydraulic Compressors
I definately would give them a call with your requirements as normally the websites don't tell the whole tale.
http://www
You might also search on net for gas intensifiers. I think you will find several as there is a big push for both CNG and H2 filling stations.
RE: Hydraulic Compressors
RE: Hydraulic Compressors
The 24 ratio case would be 4.9 ratios/stage for a two stage machine. That is a touch too high for an air-cooled cylinder, but a water cooled cylinder would be fine.
So a 120 hp, water cooled, two stage hydraulic compressor is what you're looking for. That sounds like it is probably a custom application. I worked on a machine like this last year, but the company kind of refocused itself and the compressor fell through the cracks. Getting the cylinders right (both size, clearance, and stresses) was pretty easy, but the valves were kicking my butt when they dropped funding.
The Engineering work on the first compressor will eat up every bit of your $55-75k before the first lathe touches the first chunk of steel. The first compressor will be pretty expensive because you won't have any jigs or fixtures to facilitate fabrication. After the Engineering, and the first compressor, I would expect to be able to build machines like this for around $500/hp. For a 150 hp machine you would be looking at numbers in the neighborhood of $75k. I would guess that you are looking at around a year to get the first machine on the ground if you are clear of patent violations (or can license existing patents).
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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RE: Hydraulic Compressors
RE: Hydraulic Compressors
David
RE: Hydraulic Compressors
RE: Hydraulic Compressors
RE: Hydraulic Compressors
David
RE: Hydraulic Compressors
most of the time one concept will be in favour compared to another concept,when looking at the operating cost and out of favour looking at installation cost.
i would think the benefit of hydraulic compressor lies in installation cost, not in operation/maintenance cost.(low
relyability pace setter of a recip are the valves, this you still have with a hydraulic compressor.
RE: Hydraulic Compressors
Do you have any recommendations on suppliers for multistage centrifugal compressors or approximate price range for the outlined specs?
RE: Hydraulic Compressors
since it's your project, asking a budget quote doesn' hurt
atlas copco, manturbo,...
as your mind and motivation is set on a hydraulic compressor, i'll keep my mouth shut
RE: Hydraulic Compressors
David
RE: Hydraulic Compressors
if you insist:
http://ww
RE: Hydraulic Compressors
David
RE: Hydraulic Compressors
David
RE: Hydraulic Compressors
http://ww
RE: Hydraulic Compressors
I am not used to work with non metric units
i thought 350 SCFM meant suction cubic feet/minute
and atmospheric cubic feet/minute
a wikki search later:
standard cubic and actual cubic
...
same here, just want to help
wouldn't hurt to contact sundyne and see if they can stretch the curve a bit