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Flue section matrix type real-time synchronous on-line sampling analysis device and sampling method thereof

A real-time synchronization, sampling and analysis technology, applied in sampling devices and other directions, can solve problems such as unfavorable ultra-low emission, efficient and stable economic operation, inability to effectively reflect distribution, uneven concentration field distribution, etc., to ensure efficient, economical and stable operation. Effect

Pending Publication Date: 2018-01-19
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] How to accurately detect and analyze NOx and SO in flue gas 2 , NH 3 , CO, CO 2 and other indicators, and truly reflect the distribution of gas components in the flue cross-section have become a major restrictive factor for the stable operation of ultra-low emissions, while NOx, SO 2 , NH 3 , CO, CO 2 Most of the detection and analysis of indicators such as flue gas are taken in the flue and then analyzed. However, the existing flue sampling usually adopts single-point sampling, one-to-two or one-to-four sampling methods. Due to the large cross-section of the flue, and the The flow field and concentration field are unevenly distributed, and single-point sampling, one-to-two or one-to-four sampling methods cannot effectively reflect the distribution of gas components on the entire flue section, which is not conducive to the high efficiency, stability and economy of ultra-low emissions run

Method used

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  • Flue section matrix type real-time synchronous on-line sampling analysis device and sampling method thereof
  • Flue section matrix type real-time synchronous on-line sampling analysis device and sampling method thereof
  • Flue section matrix type real-time synchronous on-line sampling analysis device and sampling method thereof

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Effect test

Embodiment 1

[0046] see Figure 1 to Figure 2 .

[0047] In this embodiment, the sample analysis time of the flue gas analyzer 4 is Δt=20s, the flue gas sampling flow rate in the sampling pipe 2 is v=0.05m / s, and the cross-sectional size of the flue 1 is 6m×6m (length×width). no 1 =2, the length direction of the grid division is L / (n 1 ·The rounded value l of Δt·v) 长 , that is, the rounded value l of 6 / (2·20·0.05) 长 =3, the width direction of grid division is M / (n 1 ·The rounded value m of Δt·v) 宽 , that is, the rounded value of 6 / (2·20·0.05) is m 宽 =3, where n 1 is 2, so that the mesh number of the section of flue 1 is determined to be l 长 × m 宽 =3×3.

[0048] Correspondingly, the number of sampling tubes 2 is nine, and the length difference between adjacent sampling tubes 2 is n 1 ·Δt·v=2·20·0.05=2m.

[0049] That is, the nine sampling tubes 2 are No. 1 sampling tube, No. 2 sampling tube, No. 3 sampling tube, No. 4 sampling tube, No. 5 sampling tube, No. 6 sampling tube, No. ...

Embodiment 2

[0057] see Figure 3 to Figure 4 .

[0058] In this embodiment, the sample analysis time of the flue gas analyzer 4 is Δt=40s, the flue gas sampling flow rate in the sampling pipe 2 is v=0.05m / s, and the cross-sectional size of the flue 1 is 8m×6m (length×width). no 1 =1, the length direction of the grid division is L / (n 1 ·The rounded value l of Δt·v) 长 , that is, the rounded value l of 8 / (1·40·0.05) 长 =4, the width direction of grid division is M / (n 1 ·The rounded value m of Δt·v) 宽 , that is, the rounded value of 6 / (1·40·0.05) is m 宽 =3, so that the mesh number of the section of flue 1 is determined to be l 长 × m 宽 =4×3.

[0059] Correspondingly, the number of sampling tubes 2 is twelve, and the length difference between adjacent sampling tubes 2 is n 1 ·Δt·v=1·40·0.05=2m.

[0060] That is, the twelve sampling tubes 2 are No. 1 sampling tube, No. 2 sampling tube, No. 3 sampling tube, No. 4 sampling tube, No. 5 sampling tube, No. 6 sampling tube, No. 7 sampling tu...

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Abstract

The invention relates to a flue section matrix type real-time synchronous on-line sampling analysis device and a sampling method thereof. The flue section matrix type real-time synchronous on-line sampling analysis device comprises a flue, a plurality of sampling pipes, a sampling distributor and a flue gas analysis instrument; one end of each sampling pipe is arranged in the flue and the other end of the sampling pipe is connected with the sampling distributor; the sampling distributor is connected with the flue gas analysis instrument; the sampling distributor comprises a smoke dust filter,a two-position three-way electromagnetic valve, a sampling flue gas collecting pipe, an emptying flue gas collecting pipe, a flue gas sampling pump and a flue gas emptying pump; the sampling pipes areconnected with the smoke dust filter; the smoke dust filter is connected with the two-position three-way electromagnetic valve; the two-position three-way electromagnetic valve is connected with thesampling flue gas collecting pipe; the sampling flue gas collecting pipe is connected with the flue gas sampling pump; the two-position three-way electromagnetic valve is connected with the emptying flue gas collecting pipe; and the emptying flue gas collecting pipe is connected with the flue gas emptying pump. The flue section matrix type real-time synchronous on-line sampling analysis device realizes real-time synchronous on-line sampling analysis of the whole flue section and guarantees real-time synchronization of sampling.

Description

technical field [0001] The invention relates to a flue cross-section matrix type real-time synchronous online sampling analysis device and a sampling method thereof. Background technique [0002] With the stricter environmental protection emission requirements, coal-fired units have gradually implemented ultra-low emission transformation, and ultra-low emission has greatly improved the requirements for operation level and control response. In order to ensure the stable and efficient operation of ultra-low emission, it is necessary Make timely adjustments to various facilities. At the same time, due to the large changes in the power generation load of thermal power units in recent years, and the ultra-low emission facilities are devices for the fine treatment of pollutants, when the unit load changes, the NOx and SO2 in the flue gas must be adjusted. 2 , NH 3 , CO, CO 2 The real-time detection results of various indicators, such as real-time detection results, adjust the op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24
CPCY02A50/20
Inventor 杜振朱跃冯前伟张杨柴磊江建平
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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