A kind of laboratory flame quartz probe online sampling system and sampling method

A sampling system and laboratory technology, applied to the laboratory flame quartz probe online sampling system and the field of sampling, can solve the problems of large experimental result errors, large test errors, and inability to analyze gaseous intermediate products, etc., to achieve reduction Experimental error, good controllability and repeatability, effect of little disturbance

Active Publication Date: 2018-09-18
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

[0004] Although researchers have studied the PAHs and other intermediates produced in gaseous fuel flames, the off-line sampling method usually used will not only produce large experimental errors, but also cannot conduct research on the gaseous intermediates produced in the flame. Measurement
[0005] In the existing technology, the Chinese patent No. 2011110058325.1 proposes a quantitative detection method for polycyclic aromatic hydrocarbons generated by internal combustion engines, and adopts an off-line sampling method for quantitative analysis of polycyclic aromatic hydrocarbons. This method will cause errors in experimental results Too large, in addition, the gaseous intermediate products generated by combustion cannot be analyzed

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  • A kind of laboratory flame quartz probe online sampling system and sampling method
  • A kind of laboratory flame quartz probe online sampling system and sampling method
  • A kind of laboratory flame quartz probe online sampling system and sampling method

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 Shown, a kind of laboratory flame quartz probe online sampling system, it comprises quartz probe 1, the tip of described quartz probe is tapered, and described quartz probe is connected with one end of sample pipeline, and described The other end of the sample pipeline is connected to the sampling hole 33 of a six-way valve, the sampling hole 34 of the six-way valve is connected to the vacuum pump 4, and the six-way valve hole II37 is connected to the gas chromatography-mass spectrometer 6 The mobile phase end is connected, and the six-way valve hole III39 is connected with the chromatographic column of the gas chromatography-mass spectrometer.

[0026] A heating band I2 is wrapped on the quartz probe and the sampling pipeline, and the wires in the heating band I are connected to the positive and negative poles of the...

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Abstract

The invention discloses a laboratory flame quartz probe on-line sampling system and a sampling method. The method comprises the following steps: (1) oxygen and protective nitrogen enter a combustor; meanwhile, nitrogen and n-heptane liquid fuel respectively enter a liquid evaporator to be completely evaporated in the liquid evaporator, the materials flow into the combustor through a pipeline for heating to 300 DEG C, gas heated in the combustor and oxygen are uniformly mixed and the gas mixture is ignited; (2) the combustor is moved; and (3) sampling and analysis are carried out. By the above method, flame under different control parameter conditions can be analyzed at real time.

Description

technical field [0001] The invention relates to an online sampling system and a sampling method for a quartz probe, in particular to an online sampling system and a sampling method for a laboratory flame quartz probe. Background technique [0002] Today, the adverse effects of soot particle emissions on the earth's environment and human health have attracted great attention from all countries in the world, and a series of laws and regulations have been introduced to control the emission of soot particles. The basis for controlling the emission of soot particles is a deeper understanding of the generation and evolution process of soot, so as to explore more effective removal methods and guide the actual production and application. [0003] Polycyclic aromatic hydrocarbons (PAHs) are environmental pollutants and important precursors of soot, and most PAHs are toxic, carcinogenic and mutagenic. In addition, other important intermediate products produced by combustion also play...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22G01N30/02
CPCG01N1/22G01N30/02
Inventor 宋崇林刘野吕刚李娜
Owner TIANJIN UNIV
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