Gas Compression Solution

Cylinder pushing cylinder. Use hydraulics in a cylinder to compress the gas in another.

If there is no issue with some contamination one cylinder will do if the H2 + CO2 are under some pressure. With check valves in place use low pressure mix to force swab one direction and hydraulics to pressurize it. With a few switches could get its to cycle and fill a pressure vessel with the required volume. A filter can be used to remove most of the contaminates(any oil blow by at the swab).

Sounds excellent!

My apologies, but I'm not only not an expert in the field - I'm not even competent.

Could you expound a bit on the basic idea? Any pointers to examples of similar ideas?

(Sorry - understanding the depth of one's ignorance isn't always the most comforting thing... ;-)

Best, Andrew

Be very careful about the gas leakage in the cylinders. Better to go for established manufacturers

Understood -- this is exactly why I'm having this problem... ;-)

To reiterate: it's easy to find someone who'll custom-manufacture what we need - which is a SMALL compressor (~10 cfm, 600psi, 100% duty cycle, can handle hydrogen), available SOON.

Any suggestions for particular manufacturers?

You could probably adapt the pump part of an airless spray gun to do the job - Contact Grayco or De Vilbis - They should compress gas just as easily as they pump paint at high pressure.

You could probably adapt the pump part of an airless spray gun to do the job - Contact Grayco or De Vilbis - They should compress gas just as easily as they pump paint at high pressure.

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I've been looking at stuff like this - but, again - I need 600psi for a gas mixture that includes hydrogen.

(My analogy for this: you've arrested 30 drunks, and need to cram them in a jail cell only big enough, for about 20. You squeeze them in like a Japanese rush-hour subway train car - they're not going to escape. That's air.

Now: you've arrested 7,000 drunk, highly agitated ... mice. Same jail cell.

That's hydrogen. ;-)

You really have me curious, what are you using this for? Lynn

Curbing the spread of drunken, disorderly mice, of course.

Err...that is - compressing syngas - we make fuels.

I am also curious to know why you want to compress H2 and CO2?

I can only think you want to do something similar to us, at Air Fuel Synthesis Ltd:

www.airfuelsynthesis.com . We want to combine CO2 from the air with H2 from electrolysis of water in a Fischer-Tropsch reactor to make synthetic fuel.

Would you like to discuss further and possibly work together?

Some sort of diaphram pump should do for the small volumes you require.

Since we have two experts in the world of hydrogen, here are some threads you would be uniquely qualified to comment on:

http://cr4.globalspec.com/thread/35169?Pg=1

http://cr4.globalspec.com/thread/35580?Pg=1

The AFS site is claiming to somehow take two net energy losing processes into a winner?