Low Pressure Biogas Sample Takeoff and Conditioning System
First Claim
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1. A system for conditioning and analyzing a low pressure biogas pipeline stream where the biogas contains one or more contaminants selected from the group consisting of H2O, CO2, H2S, NH3, C2H6, siloxanes, VOC, and O2 intermixed with CH4, said system, comprising:
- a) at least a first gas pipeline takeoff probe for extracting a biogas sample, a heated probe housing, a biogas communication line limiting dew point dropout of the biogas sample conveying the heated biogas sample to a solenoid controlled valve switch and into a sample analyzer cabinet;
b) a gas dryer unit for receiving the extracted biogas sample;
c) a pump and a pressure regulator for increasing the pressure of the heated biogas sample exiting the gas dryer;
d) a gas analyzer unit for measuring the quantity of a contaminant selected from the group consisting of H2O, CO2, H2S, NH3, siloxanes, VOC, and O2 present in the dried and pressurized and heated, biogas sample;
e) a source of compressed industrial grade purge gas input, said purge gas being passed through a pressure regulator to said gas dryer unit and said gas analyzer unit; and
f) a gas exhaust for venting the analyzed biogas sample.
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Abstract
A temperature and pressure regulating biogas sample extraction system and method for providing a conditioned biogas sample for constituent analysis.
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Citations
18 Claims
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1. A system for conditioning and analyzing a low pressure biogas pipeline stream where the biogas contains one or more contaminants selected from the group consisting of H2O, CO2, H2S, NH3, C2H6, siloxanes, VOC, and O2 intermixed with CH4, said system, comprising:
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a) at least a first gas pipeline takeoff probe for extracting a biogas sample, a heated probe housing, a biogas communication line limiting dew point dropout of the biogas sample conveying the heated biogas sample to a solenoid controlled valve switch and into a sample analyzer cabinet; b) a gas dryer unit for receiving the extracted biogas sample; c) a pump and a pressure regulator for increasing the pressure of the heated biogas sample exiting the gas dryer; d) a gas analyzer unit for measuring the quantity of a contaminant selected from the group consisting of H2O, CO2, H2S, NH3, siloxanes, VOC, and O2 present in the dried and pressurized and heated, biogas sample; e) a source of compressed industrial grade purge gas input, said purge gas being passed through a pressure regulator to said gas dryer unit and said gas analyzer unit; and f) a gas exhaust for venting the analyzed biogas sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for conditioning and analyzing a sample extracted from at least one stream of a biogas where the biogas contains one or more contaminants selected from the group consisting of H2O, CO2, H2S, NH3, C2H6, siloxanes, VOC, and O2 intermixed with CH4, said system, comprising:
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a) at least a first gas pipeline takeoff probe for extracting a low pressure biogas sample, a heated probe housing, a biogas communication line limiting dew point dropout of the biogas sample conveying the heated biogas sample to a solenoid controlled valve switch and into a sample analyzer cabinet; b) a first pump and a first pressure regulator for increasing the pressure of the heated gas sample for introduction into a gas dryer unit; c) a second pump and a second pressure regulator for further increasing the pressure of the heated gas sample exiting the dryer; d) a gas analyzer unit for measuring the quantity of a contaminant selected from the group consisting of H2O, CO2, H2S, NH3, C2H6, siloxanes, VOC, and O2 present in the dried and pressurized and heated, biogas sample; e) a source of compressed industrial grade purge gas input gas passed through a pressure regulator to gas dryer unit and said gas analyzer unit; and f) a gas exhaust for venting the analyzed biogas sample. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for conditioning a biogas sample for confirmation of its quality, comprising the steps of:
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extracting a biogas sample from a select source; regulating the temperature and pressure of the extracted biogas sample; feeding the pressure and temperature regulated biogas sample into a dryer for removal of moisture; increasing the pressurize of the biogas sample output from the dryer; and feeding said biogas sample to a dryer gas component analyzer for measuring the component in the biogas sample. - View Dependent Claims (16, 17, 18)
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Specification