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Soot collection system for laminar flame of hydrocarbon fuel and particle size analysis method

A hydrocarbon fuel and collection system technology, applied in particle size analysis, particle and sedimentation analysis, material analysis, etc., can solve problems such as the inability to realize the study of soot growth mechanism, achieve the effect of reducing impact and improving conductivity

Pending Publication Date: 2018-11-06
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiency that the sampling device in the prior art cannot realize the research on the mechanism of soot growth, and provides a soot collection system and particle size analysis method in the laminar flow flame of hydrocarbon fuel. When collecting, the time can be accurately controlled at the millisecond level, so as to realize the collection of soot during the formation of soot, and provide a basis for the study of growth mechanism

Method used

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  • Soot collection system for laminar flame of hydrocarbon fuel and particle size analysis method
  • Soot collection system for laminar flame of hydrocarbon fuel and particle size analysis method
  • Soot collection system for laminar flame of hydrocarbon fuel and particle size analysis method

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Embodiment 1

[0041] combine figure 1 , a soot collection system in a hydrocarbon fuel laminar flame of the present embodiment includes a burner 1, a collection net 2, a cylinder 4 and a signal generator 6, the collection net 2 is installed on the piston rod of the cylinder 4, and can be The flame reciprocates; the intake pipe and the outlet pipe of the cylinder 4 are connected to the nitrogen cylinder 8 through the two-way solenoid valve 5; the two-way solenoid valve 5 controls the action of its spool through the signal generator 6.

[0042] The collection net 2 is installed on the piston rod of the cylinder 4 through the self-locking tweezers 3, and the collection net 2 is placed parallel to the airflow direction to reduce the influence on the flame temperature field and flow field due to the introduction of the collection net.

[0043] Cylinder 4 is a two-way cylinder, and the intake pipe and outlet pipe of cylinder 4 are connected with nitrogen cylinder 8 through two-way solenoid valve ...

Embodiment 2

[0047] The soot collection system in a hydrocarbon fuel laminar flame of this embodiment has the same basic structure as that of Embodiment 1, and further: the cylinder 4 is installed on a lifting platform 7, and the lifting platform 7 is a scissor lifting platform. Scale is set outside lifting platform 7, as height adjustment datum.

[0048] combine figure 2 , The burner 1 is mainly composed of an outer pipe 15 and an inner pipe 16, and the inner pipe 16 is connected with the fuel bottle 9 through a pipe for fuel to flow out. The outer tube 15 surrounds the inner tube 16 and communicates with the bottom space of the burner 1. An oxidant inlet 21 is arranged on the bottom shell of the burner 1. The oxidant inlet 21 is connected to the mixing tank 10 through a pipeline, and the mixing tank 10 is connected to the mixing tank 10 through a pipeline. Connect with oxygen cylinder 13 and nitrogen cylinder 14 respectively, and connect three pipelines with three-way valve 11, the oxi...

Embodiment 3

[0051] A soot collection system in a hydrocarbon fuel laminar flame of the present embodiment, its basic structure is the same as that of Embodiment 2, further: in combination image 3 , the collection net 2 is made up of carrier net 24, supporting film 23 and carbon film 22, and carrier net 24 is a copper net, and supporting film 23 is a layer of organic film carried on the basis of carrier net 24, and carbon film 22 is to support film A layer of 10-15nm carbon particle film sprayed on the surface of 23 is used to increase the conductivity of the support film 23 to achieve a good observation effect.

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Abstract

The invention discloses a soot collection system for laminar flame of hydrocarbon fuel and a particle size analysis method, and belongs to the field of analysis for soot particles. The soot collectionsystem is characterized in that a collecting network is mounted on a piston rod of a cylinder, and a gas inlet pipeline and a gas outlet pipeline of the cylinder are connected with a nitrogen gas cylinder through a two-way electromagnetic valve; the two-way electromagnetic valve controls a valve core to act by a signal generator, self-locking tweezers clamping the collection network are driven torapidly get in and out of flame, and the soot particles are deposited on a copper net under the action of thermophoretic force and adsorbed by a carbon film. During analyzing, the soot particle morphology and structure are characterized by a transmission electron microscope; the particle size of basic soot particles is counted by the aid of Nano Measurer particle size analysis software, and particle diameter distribution is subjected to nonlinear fitting. According to the invention, soot particle sampling under different flame heights in millisecond-grade sampling time can be realized, morphological observation of soot growing stage can be realized, and a foundation is laid for research of overall characteristics of the soot particles.

Description

technical field [0001] The invention relates to the technical field of soot particle analysis, and more specifically relates to a soot collection system and a particle size analysis method in a hydrocarbon fuel laminar flow flame. Background technique [0002] Energy and the environment are two major issues in today's world. Combustion is the main way for humans to utilize fossil fuels, and clean and efficient combustion is one of the effective ways for humans to solve two major problems. Soot is an important product of incomplete combustion of fuel (including coal), which has various effects on combustion efficiency, heat transfer process and environmental effects. The soot produced by incomplete combustion of fossil fuels not only reduces the economy of fossil fuel combustion, but also has a great impact on human health. The entry of soot particles into the atmosphere reduces visibility and forms haze weather; in addition, soot is also one of the causes of the "greenhous...

Claims

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Application Information

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IPC IPC(8): G01N15/02
CPCG01N15/02G01N2015/0294
Inventor 楚化强韩伟伟汪鹏任飞曹文健相龙凯
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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