Greenhouse gas methane on-line detection analyzer and detection method

Abstract

The invention provides an online detection analyzer for greenhouse gas methane and a detection method. The online detection analyzer comprises a multi-way valve, a quantitative loop, a carrier gas supply module, a first EPC valve, a second EPC valve, a detector and a chromatographic column. The online detection analyzer disclosed by the invention has the beneficial effects that the online detection analyzer has the advantages that the detection concentration range is large, and the measuring range can reach 0-5000ppm; a chemical chromatographic separation technology is adopted, so that a test system is more stable and is not easily interfered; the test lower limit is low, and the accuracy and stability of the test result can be ensured when the low-concentration methane is tested; the on-line detection analyzer can realize automatic on-line monitoring, does not consume short-term consumables, is small in maintenance amount, and is convenient to operate and maintain.

Description

technical field [0001] The invention relates to the technical field of gas monitoring equipment, in particular to an online greenhouse gas methane detection analyzer and a detection method. Background technique [0002] In recent years, the world has paid more and more attention to carbon emissions, so the monitoring of greenhouse gas emissions has become more and more important. As a very important component of greenhouse gases, methane emissions must be strictly monitored. For the monitoring of the greenhouse gas methane (CH4), at present, non-dispersive infrared methods are generally used, or optical methods such as laser radar are used, but both methods have obvious defects: [0003] (1) Generally, the lower limit of detection is not high, and the monitoring is not accurate for places with lower concentrations, and the error is higher; [0004] (2) The optical system is susceptible to interference, resulting in large deviations in measurement results; [0005] (3) As ...

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Problems solved by technology

[0003] (1) Generally, the lower limit of detection is not high, and the monitoring is not accurate for places with lower concentrations, and the error is higher;

[0004] (2) The optical system is susceptible to interference, resulting in large deviations in measurement results;

[0005] (3) As the temperature changes, the entire monitoring system will have a large drift;

[0006] (4) The measuring range is generally narrow

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