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Intelligent analyzer and detection method for standard state dry basis

An intelligent analysis and detection method technology, applied in the direction of transmittance measurement, etc., can solve the problems of inability to measure the standard dry basis concentration of flue gas gaseous pollutants to be measured in real time, the instrument is easily damaged, and the lack of intelligent diagnosis function of monitoring equipment, etc. Achieve the effects of optimizing the overall layout, reducing costs, and improving sensitivity and accuracy

Active Publication Date: 2015-07-15
NANJING ASSEN ENVIRONMENT TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing flue gas analyzer can only monitor the concentration of gaseous pollutants in the flue gas, but cannot measure the standard dry-base concentration of gaseous pollutants in the flue gas to be measured in real time, and lacks intelligent diagnostic functions such as identification of the operating status of the monitoring equipment and fault alarms and many other deficiencies, the present invention provides a standard dry basis intelligent analyzer and detection method, which has the functions of directly outputting the standard dry basis concentration of gaseous pollutants, prolonging the service life of the analysis instrument, and real-time diagnosis of the operating state of the analyzer.
It solves the problems of how to ensure that the measured value of the instrument complies with the Chinese environmental protection standard, how to avoid the easy damage of the instrument under complex working conditions, and how to ensure the true reliability of the measured value of the analytical instrument, etc.

Method used

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  • Intelligent analyzer and detection method for standard state dry basis
  • Intelligent analyzer and detection method for standard state dry basis
  • Intelligent analyzer and detection method for standard state dry basis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as figure 1 The schematic diagram of the working process of the standard dry-based intelligent analyzer shown is mainly composed of the gas circuit part and the circuit part, the horizontal flow chart of the gas circuit part, and the vertical flow diagram of the circuit part (mainly electrical signals). The gas path process is that the flue gas passes through the flue gas water filter device in sequence to filter out the liquid water that may be generated in the gas path, and then passes through the flue gas multi-parameter measurement device. The sensor in the flue gas multi-parameter measurement device senses and transmits the measured temperature, The humidity and pressure signals are finally passed through the gaseous pollutant sensing and measuring chamber to measure the concentration signals of the flue gas components. The circuit part process mainly includes a data acquisition and processing unit and an output display communication unit. The data acquisition...

Embodiment 2

[0073] The structure is the same as in Example 1, except that the SO 2 Measuring range is 0~3000mg / m 3 , to be tested SO 2 Sample gas concentration is 1500mg / m 3 , the specific measurement steps are as follows:

[0074] 1. Turn on the power supply of the standard dry base intelligent analyzer;

[0075] 2. Calibration:

[0076] (1) Zero point calibration: connect the zero gas to the air inlet 19 of the standard dry-based intelligent analyzer, and pass the SO 2 The sensor measures the intensity of light passing through the reference cell at zero gas I 参 and the intensity I of the light passing through the sample cell 0 , according to the data acquisition and processing unit of the standard dry-based intelligent analyzer, the transmittance T of monochromatic light passing through the reference cell is obtained 参 =I 参 / I 0 After 10 minutes, check the measured value on the display screen 6. The measured value is stable at 1ppm, with a relative error of 0.03%, which meets t...

Embodiment 3

[0084] The sensors of multiple gaseous pollutant sensing and measuring chambers are integrated in the same chassis in series, such as SO2, NO, NO2, and CO sensors can be combined and matched in any way, and the data acquisition and processing unit is added with NO, NO 2 , CO signal collection channel and concentration conversion, the output display communication unit increases the functions such as the standard dry base type of pollutants displayed, the monitoring equipment has strong expandability, and other device structures are the same as in embodiment 1.

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Abstract

The invention discloses an intelligent analyzer and a detection method for a standard state dry basis, and belongs to the field of gas detection analyses. The intelligent analyzer comprises a sensing and measuring unit, a heating control unit, a data collecting and processing unit and an output display communication unit, wherein the heating control unit and the sensing and measuring unit are positioned in a same closed cavity chamber; and the peripheries of the heating control unit and the sensing and measuring unit are separated from the data collecting and processing unit and the output display communication unit through a heat insulating plate. The detection method comprises the following steps of: demarcating zero gas, and detecting sample gas, so as to obtain a wet basis volume value under a nonstandard state of measured gas; measuring parameters of fume, and changing the parameters into volume values under a standard state and converting to be a value of a standard state dry basis concentration. According to the intelligent analyzer and the detection method, the gaseous pollutant standard state dry basis concentration is directly output, the service life of the analyzer is prolonged, and functions of diagnosing the running state of the analyzer can in real time can be realized; and the detection method solves the problems that the condition that measured values of the analyzer can meet the China environmental standard, the condition that an instrument is easy to damage under a complicated working condition, and the reality reliability of the measured values of the analyzer are ensured, and the like can be solved.

Description

technical field [0001] The invention relates to a continuous automatic monitoring device for multi-component gases of flue gas discharged from pollution sources, in particular to a standard dry-based intelligent analyzer and a detection method. Background technique [0002] my country's environmental protection standards stipulate that the concentration of pollutants in flue gas is the content of pollutants in dry flue gas under standard conditions. Abbreviated as "standard state", the concentration of air pollutants specified in this standard refers to the value of dry flue gas under the standard state". [0003] The analysis of flue gas components is a complex subject involving multiple disciplines. It is not only necessary to ensure the detection accuracy and stability of flue gas components, but also to consider the influence of various factors on the analysis of flue gas components. Considering the influence of moisture content, temperature, particulate matter and other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/59
Inventor 刘德允章曙陈莹范黎锋陈清李浙英董拯
Owner NANJING ASSEN ENVIRONMENT TECH
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