Method for obtaining stale cold flame through adding O3 and CH3OH

A technology of CH3OH and cold flame, which is applied in the field of fuel flame stabilization, can solve problems such as complexity, hindrance to the understanding of the cold flame process, and uncontrolled types of production, and achieve good versatility

Inactive Publication Date: 2015-12-02
CHONGQING UNIV
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Problems solved by technology

[0005] (1) A stable cooling flame is obtained by changing the wall heat transfer conditions and external heating, so that the cooling flame process is affected by both system thermodynamics and chemical reaction kinetics, and the two are closely related, which makes the analysis of the cooling flame law become difficult. Complexity hinders our understanding of the cold flame process
[0006] (2) The cold flame is stabilized by generating active free radicals through the plasma. However, the type of plasma is not controlled. In this process, various substances are often produced, which interact with each other during the combustion process, leading to the recognition of the cold flame. The process is more difficult and complex
[0007] (3) The method of adding active substances to obtain a stable cold flame designed for specific fuels, different fuels need to be considered separately, redesigned, fuel applicability is poor
[0008] (4) The combustion conditions for obtaining the cold flame are all premixed combustion methods, which cannot clearly observe the flame structure and measure the free radical changes during the combustion process, which is not conducive to analyzing the specific structure of the cold flame and the detailed generation process

Method used

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  • Method for obtaining stale cold flame through adding O3 and CH3OH

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Embodiment Construction

[0020] Taking the specific working conditions of n-heptane and isooctane as an example, the flame draw ratio of n-heptane is 50, the fuel side composition is 7% n-heptane, 0.5% methanol and 92.5% nitrogen, and the temperature is 550K; The oxidant side is 0.02% ozone and 99.98% oxygen, the temperature is 300K, and a cold flame with a temperature of about 720K can be obtained. The flame draw rate of isooctane is 60, the fuel side is composed of 12% isooctane, 0.5% methanol and 87.5% nitrogen, and the temperature is 650K; the oxidant side is 2% ozone and 98% oxygen, The temperature is 300K, and a cold flame with a temperature of about 780K can be obtained.

[0021] For n-heptane, there are different O 3 and CH 3 OH ratio, but the ratio size varies from 1:25 to 1:5.

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Abstract

The invention provides a method for obtaining stale cold flame through adding O3 and CH3OH, and aim to provide a method for stabilizing cold flame having fuel applicability, provide conditions of measurement on the structure of cold flame, temperature and concentrations of components, and establish base to research on rules of generation, end and fluctuation of cold flame. The combustion can be controlled through adjusting the proportions of O3 and CH3OH.

Description

[0001] 1. The technical field to which it belongs: [0002] The invention relates to a method for stabilizing a fuel flame, in particular to a method for controlling the low-temperature oxidation process of a fuel by adding active molecules and inhibitors, and belongs to the application field of fuel flame stabilization technology. 2. Background technology [0003] A cold flame is a low-temperature flame that appears during the low-temperature combustion of hydrocarbon fuels and continues to release heat at a very slow rate. As an important stage in the low-temperature combustion zone, the cold flame has an important impact on the ignition of the low-temperature zone and the formation of final products. Therefore, the study of the cold flame plays an important role in industrial applications and the understanding of the combustion process. The degenerate branched reaction involved in the cold flame reaction accelerates slowly and the reaction rate is small. In this slowly oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L7/00F23C1/00
CPCY02E20/34
Inventor 苟小龙王子君
Owner CHONGQING UNIV
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