[Digestion] Compressing of biogas

Tue Nov 23 22:27:47 CST 2010

Hi there!   I believe that the  Phill unit is coming back on the market again soon?  http://www.cnginfoguide.com/node/26
This is  a hang on the wall unit that  will refill the tank on a car or truck over night.  It does not require extra cylinder storage.  This is the cheapest way  I know of to make CNG.   To get rid of the CO2  and H2S   needs a separate 
single stage of compression in water via a drum packed full.of bashed up old rusty tin cans.  Q.V.  the MAF brochures on my website. http://www.coffee.20m.com/Publications.htm
Ken Calvert.  
  ----- Original Message ----- 
  From: bingham 
  To: For Discussion of Anaerobic Digestion 
  Sent: Wednesday, November 24, 2010 9:36 AM
  Subject: Re: [Digestion] Compressing of biogas

  On the ranch where I lived as a child: the water system was a stream from the top of a small mountain.  We placed a black
  poly plastic pipe in the water at the top and ran it to a tank at the house near the bottom of the mountain.
   The excess water ran to the pond. We were repairing the tank one summer (years later) and turned the valve
  at the bottom the black pipe line off ,for the first time. In a short time the valve blew off. 

  It gave me the idea to hooking the line directly to the house and eliminating the water pressure pump. The water lines
  continued to burst from the water pressure. It turned out the water was over 100PSI and the water heater was
  always full of high pressure air. As the water was pulled into the pipe at the top by the siphoning action of water falling
  due to gravity (energy source), it was pulling in air. As the air and water (liquid) mixture  traveled down the pipe the 
  weight of the water compressed the air (the gas). I eventually placed pressure reducing valves in the plastic line.
  The old rock quarry up the canyon from the house used steam to power the saws and drills.I originally put an old steam 
  tank in the  pipe to remove the air but the pressure pop off kept  blowing. I rebuild one of the old flywheels that ran the 
  belt saws and hooked it to the compressed air coming from the steam tank. I thought I would start the quarry
  and get rich but that never paid off. I found an old electric generator and hooked it to the belt and we had nearly
  free electricity.  One idea lead to an other and several things developed.

  This all took years but it resulted in a lot of research and a few more ideas of on gravity, hydraulic pressure and how
  it could be used. The world is full of old mines and mountains. Finding the liquid is a problem. You do not always have
  water at the top of a mountain or at a mine opening. Developing  better ways to separate the liquid form the Gas has
  been  a long process.  You must be in the right place to apply the process. There are many versions and variations
  that can be applied to many energy dependant systems. We used this process to pump water out of a flooded mine.
  Turns out old fashioned water pumps that ran on steam are very practical to run on compressed air.

  Brent

    ----- Original Message ----- 
    From: Alexander Eaton 
    To: For Discussion of Anaerobic Digestion 
    Sent: Tuesday, November 23, 2010 12:25 PM
    Subject: Re: [Digestion] Compressing of biogas
    snip

    I am afraid I am a bit lost regarding the shaft compression method you are discussing here.  In what situation would one have a large shaft available?  How are you mixing the gas and liquid with no energy?  How are you then separating them effectively?  Is this something that you are using commonly?  I am having trouble understanding how this is all being fed into a pipe, with no gas leaks, and then the gas is being forced downward, somehow in sustained suspension in the liquid.  How is this "feeding" with no energy?  What liquid are you using?  How do you have two power sources?  Are you somehow capturing the kinetic energy of the liquid in a turbine?  More information please!  

    snip

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