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An online measuring device for gas composition and calorific value

A technology for measuring devices and gas components, which is applied in the field of on-line measuring devices for gas components and calorific value, and can solve problems such as the inability to achieve simultaneous analysis

Active Publication Date: 2018-10-12
湛江新奥燃气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using a chromatograph to analyze gas components, the minimum sampling interval is more than 4 minutes; the online device using the principle of infrared detection cannot realize the simultaneous analysis of all components

Method used

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  • An online measuring device for gas composition and calorific value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Taking the measurement of the composition and calorific value of mixed gas in metallurgical enterprises as an example, the mixed gas is mixed with blast furnace gas, coke oven gas, converter gas, etc. according to different proportions. When the mixing ratio changes, the volume percentage of each component in the mixed gas fluctuates greatly.

[0017] use figure 1 The device in the device measures the composition and calorific value of the mixed gas.

[0018] The mixed gas contains: methane, ethylene, acetylene, propane, carbon monoxide, hydrogen, carbon dioxide, nitrogen, oxygen and other components. According to the cross-interference characteristics of each sensor, it is analyzed that hydrogen, ethylene, acetylene, and propane have cross-interference on the carbon monoxide sensor.

[0019] Adjust the openings of the first flow regulating valve 12 , the second flow regulating valve 11 and the third flow regulating valve 8 so that each gas sensor is always within the ...

Embodiment 2

[0032] Take the composition and calorific value measurement of coke oven gas in metallurgical enterprises as an example.

[0033] use figure 1 The device in the device measures the composition and calorific value of the mixed gas.

[0034] Coke oven gas contains: methane, ethylene, acetylene, propane, carbon monoxide, hydrogen, carbon dioxide, nitrogen, oxygen and other components. During the production process of the enterprise, the content fluctuation of each component of coke oven gas is less than 10%.

[0035] Adjust the openings of the first flow regulating valve 12 , the second flow regulating valve 11 and the third flow regulating valve 8 so that each gas sensor is always within the linear working range during calibration and measurement.

[0036] Keep the openings of the first flow regulating valve 12 , the second flow regulating valve 11 and the third flow regulating valve 8 unchanged. If the openings of the flow regulating valves change, the device must be recalibra...

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Abstract

The invention relates to an online fuel gas component and heat value online measuring device which is particularly suitable for online analysis of coal gas of industrial enterprises, city fuel gas components and heat values. According to the device, the condition that fuel gas components are separated by utilizing a chromatographic column is not needed, fuel gas is diluted gradually to achieve certain concentration by utilizing air or nitrogen gas or argon gas, the volume contents of the components in the fuel gas can be respectively measured by directly using a gas sensor, and then the heat value of the fuel gas is calculated.

Description

technical field [0001] The invention relates to an on-line measurement device for gas components and calorific value, which is especially suitable for on-line analysis of components and calorific value of industrial enterprise gas and urban gas, and can realize coke oven gas, blast furnace gas, converter gas, mixed gas, Component analysis and calorific value measurement of water gas, coal gas, petroleum gas, natural gas, town gas and other gases. technical background [0002] Gas is an important fuel for metallurgy, coal chemical, petrochemical enterprises and urban residents. Realizing on-line analysis of gas composition and calorific value can improve the production process and fuel utilization efficiency of enterprises. [0003] At present, some of the on-line analysis equipment for gas components use chromatographs, and some use the principle of infrared detection. When using a chromatograph to analyze gas components, the minimum sampling interval is more than 4 minutes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/22G01N1/38
Inventor 陈爱美
Owner 湛江新奥燃气有限公司
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