Device for online detection of solid fuel combustion products at different spatial locations

A solid fuel and combustion product technology, which is applied in measuring devices, chemical analysis by combustion, material separation, etc., can solve problems such as inability to ensure detection and affect the detection of low-concentration products, so as to optimize combustion products, improve accuracy and convenience Effect

Active Publication Date: 2019-08-13
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main combustion products of pulverized coal studied in this literature include O 2 , CO, CO and NO X , but the gas-solid separator and dryer in the sampling process will greatly affect the detection of low-concentration products, and the analysis instrument uses a flue gas analyzer, which cannot ensure the detection of low-concentration light hydrocarbons or polycyclic aromatic hydrocarbons, etc. effective detection of the product
[0005] So far, there have been no reports on the online qualitative and quantitative detection of solid fuel combustion products at different axial and radial positions in planar flame entrained flow reactors. Obtaining comprehensive information on these inorganic and organic products is very important for understanding solid fuel combustion. Mechanism and optimization of combustion products are of great significance

Method used

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  • Device for online detection of solid fuel combustion products at different spatial locations
  • Device for online detection of solid fuel combustion products at different spatial locations
  • Device for online detection of solid fuel combustion products at different spatial locations

Examples

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Effect test

example 1

[0060] The raw material used in Example 1 is Shenmu coal, the particle size range is 90-100 μm, and the feed rate is 200 g / h. In the plane flame entrained flow reactor system 10, the mixed premixed gas of oxygen, nitrogen and methane is passed into the outer burner pipeline 14 through the intake system 16, and these premixed gases are ignited to form a uniform laminar premixed flame ; The mixed premixed gas of oxygen, nitrogen and methane passes into the internal burner pipeline 13 through the intake system 16, and the Shenmu coal particles provided by the feeder 11 are brought into the internal burner 121; Nitrogen passes through as the outer ring protection gas The air intake system 16 leads into the outer ring pipeline 15, finally forming a stable Shenmu coal combustion flame.

[0061] The conical probe 21 in the online sampling system 20 performs sampling along the axial direction of the Shenmu coal flame through the two-dimensional moving platform 23 .

[0062] The combu...

example 2

[0065] The conditions such as the experimental raw materials used in Example 2 and the gas introduced into the flat flame entrained flow reactor system 10 are the same as those in Example 1.

[0066] The conical probe 21 in the online sampling system 20 samples along the radial direction of the Shenmu coal flame through the two-dimensional mobile platform 23. The location of the intermediate distance reactor.

[0067] The quantitative loop 32, vacuum pump 33, analytical instrument 34, and carrier gas 36 used in the online detection system 30 are the same as those in Example 1.

[0068] image 3 It is the radial (r-axis, away from the reactor surface z=10mm place) spatial distribution figure of part product in the Shenmu coal combustion flame that obtains in example 2, by example 2, utilize the device that the present invention proposes, can along the reactor diameter To carbon dioxide (CO 2 ), carbon monoxide (CO), oxygen (O 2 ), methane (CH 4 ), ethane (C 2 h 6 ) and e...

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Abstract

The invention provides a device for detecting solid fuel combustion products at different space positions on line. The combustion products at different axial and radial positions of solid fuel flame can be sampled by adjusting the position of the pointed end of a conical probe relative to the solid fuel flame; a two-dimensional movable platform is used, and richer and more accurate space distribution information of the solid fuel combustion products can be obtained more conveniently and flexibly, which is beneficial for learning combustion chemical reaction mechanism of the solid fuel and optimizing the combustion products; the axial and radial positions of the conical probe located on the solid fuel flame can be controlled more accurately through a driver and a controller, and sampling and detecting accuracy and convenience are further improved; multiple inorganic substances and multiple organic substances including light dydrocarbon and polycyclic aromatic hydrocarbon can be conveniently and fast detected in real time on line by using a six-way valve, an analytical instrument and other devices to obtain qualitative and quantitative analysis results.

Description

technical field [0001] The invention relates to the technical field of industrial chemical analysis, in particular to a device for online detection of solid fuel combustion products at different spatial positions. Background technique [0002] The situation that my country's energy structure is dominated by coal and the shortage of oil and gas will not change for a long time. In my country's coal use, coal direct combustion accounts for 84%, and the pollutants produced by coal combustion are one of the main sources of air pollution in my country. At present, my country has included the high-efficiency and clean combustion technology of coal in the national medium and long-term scientific and technological development plan. Therefore, the efficient and clean combustion of coal will be a long-term and important research topic. In recent years, due to its renewable, low-cost, CO 2 and SO 2 It has become a hot topic in the field of energy heat conversion research because of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/12G01N30/02G01N21/359
CPCG01N21/359G01N30/02G01N31/12G01N2021/3595G01N2030/025
Inventor 田振玉翁俊桀
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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