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Natural gas sample collection method for natural gas mercury content detection

A technology for sample collection and natural gas, which is used in material inspection products, sampling, sampling devices, etc., can solve the problems of inaccurate mercury content in natural gas and errors in test results, and achieve the effects of wide application range, high installation coefficient, and practical convenience.

Pending Publication Date: 2020-10-30
承德石油高等专科学校
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Problems solved by technology

[0006] Although the method adopted in this comparative document CN103149057A can easily collect natural gas samples with mercury content in natural gas, when collecting natural gas samples with mercury content in natural gas, the air and other gases inside the sampling device are not evacuated , the natural gas sample collected by this method contains air and other gases, the mercury content in the detected natural gas is inaccurate, resulting in errors in the detection results

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  • Natural gas sample collection method for natural gas mercury content detection

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0038] refer to figure 1 , the present invention also proposes a natural gas sample collection method for mercury content detection in natural gas, comprising the following steps;

[0039] S1. Install a sampling device for natural gas sample collection for the detection of mercury content in natural gas on the natural gas pipeline to be tested;

[0040] S2. Limiting the flow rate on the pipeline of the sampling device;

[0041] S3. Empty the gas inside the collection device, and at the same time, empty the container for collecting natural gas samples;

[0042] S4. Open the control valve on the main pipeline to allow the natural gas to flow into the collection conta...

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Abstract

The invention discloses a natural gas sample collection method for natural gas mercury content detection. The natural gas sample collection method comprises the steps of mounting a sampling device fornatural gas sample collection for natural gas mercury content detection on a to-be-detected natural gas pipeline; limiting the flow velocity on the pipeline of the sampling device; emptying the gas in the collecting device, and emptying a container for collecting the natural gas sample; opening a control valve on the main pipeline to enable the natural gas to flow into the collecting container, and collecting to obtain a natural gas sample for detecting the mercury content of the natural gas. According to the method, in the process of collecting the natural gas sample for detecting the mercury content of the natural gas, the collecting device can be emptied, so that residual air or impurities in the pipeline and the collecting container are avoided, and the influence on the accuracy of adetection result of the mercury content in the natural gas is prevented.

Description

technical field [0001] The invention relates to the fields of natural gas geochemistry and natural gas surface engineering, in particular to a natural gas sample collection method for detecting mercury content in natural gas. Background technique [0002] Mercury is a common harmful heavy metal element in natural gas, and the mercury content of different types of natural gas often varies greatly. For gas field production, high-mercury natural gas is not only highly corrosive to production equipment, causing catastrophic accidents such as gas leakage, shutdown or even explosion, but may also cause great harm to operators. Therefore, it is necessary to remove mercury from natural gas with high mercury content, and the detection results of mercury content in natural gas are the most basic data for mercury removal in gas fields. [0003] At present, the method for detecting mercury content in natural gas is mainly for product gas, which is not only complicated but also not suit...

Claims

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Application Information

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IPC IPC(8): G01N1/22G01N33/22F17D1/02F17D3/01F17D3/18F04B37/14
CPCG01N1/2247G01N33/225F17D1/02F17D3/01F17D3/18F04B37/14
Inventor 刘春艳周芳芳王金树褚会丽
Owner 承德石油高等专科学校
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