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Device and method for measuring volatilization amount of hydrogen sulfide in pulverized coal

A hydrogen sulfide and volatilization technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as difficult to meet the detection requirements of hydrogen sulfide, concentration test methods that do not consider the process, etc., to improve accuracy, reduce adsorption, and test results precise effect

Pending Publication Date: 2021-04-13
SHANXI JINSHEN SHAPING COAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, the accumulated coal powder will cause the adsorption of hydrogen sulfide, which is a dialectical contradiction with its own hydrogen sulfide release. In the prior art, the volatile amount of hydrogen sulfide in coal is mainly measured by chromatography, but this is a A Concentration Test Method Regardless of Process
Existing technologies are difficult to meet the high-precision (PPM level) detection requirements for hydrogen sulfide
At present, there is no special test device and test method that can achieve technical requirements such as high test accuracy, continuous cycle test, and avoidance of adsorption.

Method used

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  • Device and method for measuring volatilization amount of hydrogen sulfide in pulverized coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A device for measuring the volatilization of hydrogen sulfide in pulverized coal, comprising:

[0041] The reaction chamber and the cyclone separator are connected by pipelines and form a circulation loop; the top of the reaction chamber is connected to the dusty air inlet of the cyclone separator through pipelines, and the particle outlet at the bottom of the cyclone separator is connected to the bottom of the reaction chamber through pipelines; The structure makes the pulverized coal "raised" by the air flow to form a gas-solid mixture, which circulates in the device and continuously measures the release of hydrogen sulfide gas in a uniform state.

[0042] The clean gas outlet of the cyclone separator is connected to the bottom of the reaction chamber after passing through the connecting fan through the pipeline;

[0043] A heating device is arranged on the pipeline between the fan and the reaction chamber;

[0044] A water inlet is provided on the pipeline along the...

Embodiment 2

[0048] On the basis of Example 1, temperature and pressure measuring devices are added in the reaction chamber, so that the measurements of temperature, pressure and hydrogen sulfide concentration are all completed in the reaction chamber, making the test more accurate.

[0049] In each embodiment herein, the water inlet adds liquid water or water vapor to the system.

Embodiment 3

[0051] On the basis of Example 1, the reactor is a vertical cylindrical structure with a sealable cleaning opening at the bottom, and the pipeline between the particulate matter outlet of the cyclone separator and the reaction chamber is provided with bends. The function of bending is to prevent the material pressure from dropping too quickly.

[0052] In each of the above embodiments, a dust filter may be provided between the cyclone separator and the fan. The heating device is preferably an electric heating device.

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Abstract

The invention discloses a device for measuring a volatilization amount of hydrogen sulfide in pulverized coal. The device is structurally characterized by comprising a reaction chamber and a cyclone separator which are connected through a pipeline and form a circulation loop, wherein the top part of the reaction chamber is connected with a dusty air inlet of the cyclone separator through a pipeline, and a particle outlet at the bottom part of the cyclone separator is connected to the bottom of the reaction chamber through a pipeline; the reaction chamber is provided with a sample inlet and a hydrogen sulfide detection port; a clean gas outlet of the cyclone separator is connected to the bottom of the reaction chamber after passing through a connecting fan through a pipeline; a heating device is arranged on a pipeline between the fan and the reaction chamber; and a cyclone separator-fan-reactor pipeline is provided with a water adding port. The invention further provides a testing method corresponding to the device. The device has the advantages that continuous circulation and continuous testing are achieved in a closed environment, no gas is discharged, and the testing result is accurate; and the adsorption of the powdered coal to the hydrogen sulfide gas is reduced, and the precision is improved.

Description

Technical field: [0001] The application belongs to the field of mining and harmful gas measurement and processing, and specifically relates to a device for measuring the volatilization of hydrogen sulfide in pulverized coal and a measurement method related to the device. Background technique: [0002] In the prior art, the volatilization of hydrogen sulfide in coal is mainly determined by chromatography, but this is a concentration test method that does not consider the process. [0003] Hydrogen sulfide gas in pulverized coal mainly comes from the hydrolysis of calcium sulfide, zinc sulfide and other compounds, which are gradually reacted and released. Under different temperature conditions, the degree of volatilization is also different. Therefore, accurate measurement of hydrogen sulfide requires control of moisture, Temperature, cycle continuous measurement of these three elements. On the other hand, the accumulated coal powder will cause the adsorption of hydrogen sulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
CPCG01N25/00
Inventor 王大鹏王宪勇李创民管跃荣
Owner SHANXI JINSHEN SHAPING COAL IND CO LTD