Method for obtaining explosion limit of binary combustible liquid mixture and computer

A technology of liquid mixture and explosion limit, which is applied in the field of flammability research of liquid vapor, can solve problems such as the method of undiscovered binary mixture explosion limit, and achieve the effect of avoiding combustion and explosion accidents

Pending Publication Date: 2020-08-28
LINGDONG NUCLEAR POWER +4
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Combustible liquid mixtures need to be strictly controlled in production and life, but no method has been found that can accurately estimate the explosion limit of binary mixtures containing difficult volatile liquids

Method used

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  • Method for obtaining explosion limit of binary combustible liquid mixture and computer
  • Method for obtaining explosion limit of binary combustible liquid mixture and computer
  • Method for obtaining explosion limit of binary combustible liquid mixture and computer

Examples

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Embodiment 1

[0048] In the method for obtaining the explosion limit of the binary flammable liquid mixture of this embodiment, the binary flammable liquid mixture includes component 1 and component 2, and the method includes the following steps:

[0049] S1. The lower explosion limit values ​​of the pure substances of component 1 and component 2 at the initial temperature T and initial pressure p measured through experiments are L respectively 1 and L 2 , the upper limit of the explosion is U 1 and U 2 ;

[0050] S2, the molar ratio of component 1 to component 2 is c 1 :c 2 , the lower explosion limit of the binary flammable liquid mixture is Explosion limit is Calculate the actual liquid phase mole fraction of component 1 and component 2 at the initial temperature T and initial pressure p according to the gas-liquid phase equilibrium as x L1 and x L2 , the gas phase mole fraction is x v1 and x v2 , and then obtain the sum p' of the actual gas phase partial pressures of compone...

Embodiment 2

[0087] The computer in this embodiment includes a memory and a processor, the memory is used to store computer programs; the processor executes the computer programs to implement the method for obtaining the explosion limit of the binary flammable liquid mixture as described above.

Embodiment 3

[0089] With reference to Table 1, using the estimation method of the present invention, the lower explosion limit of the binary mixture of undecane / n-pentanol with a mole fraction of 0.7:0.3 at an initial temperature of 60° C. and an initial pressure of 100 kPa was carried out in this example. Estimation, the estimated result is 2.17%, the experimental value of the lower explosion limit is 2.06%, the deviation between the estimated value and the experimental value is 0.11%, and the deviation is basically within the uncertainty range of the experimental results.

[0090] Table 1 Estimation of lower explosion limit of undecane / n-pentanol binary mixture

[0091]

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Abstract

The invention relates to a method for obtaining the explosion limit of a binary combustible liquid mixture and a computer. The method comprises the following steps: firstly, obtaining the sum p'v of actual gas-phase partial pressures of a component 1 and a component 2, and the sum p''v of the gas-phase partial pressures of the component 1 and the component 2, then calculating y = p'v-p''v, if y isgreater than 0, reducing the value of the explosion lower limit or the explosion upper limit of the binary combustible liquid mixture, and calculating p'v and p''v again according to the step S2 andthe step S3, if y is less than 0, increasing the value of the explosion lower limit or the explosion upper limit of the binary combustible liquid mixture, and recalculating p'v and p''v according to the step S2 and the step S3; and when y is equal to 0, enabling the explosion lower limit value or the explosion upper limit value corresponding to y to be the explosion lower limit value and the explosion upper limit value of the binary combustible liquid mixture respectively. According to the method, the explosion limit of the binary mixture containing the liquid difficult to volatilize at normaltemperature and normal pressure can be obtained, the explosion lower limit and the explosion upper limit of the binary mixture under other different temperature and pressure initial conditions can also be obtained, and combustion explosion accidents can be avoided.

Description

technical field [0001] The invention relates to the field of research on the flammability of liquid vapor, and more specifically, relates to a method and a computer for obtaining the explosion limit of a binary flammable liquid mixture. Background technique [0002] The explosion limit is one of the most important safety indicators for combustible gases and liquid vapors. At present, most of the research on the explosion limit of combustibles at home and abroad is limited to flammable gases, and the research on the explosion limit of flammable liquids is very rare, and most of them are For the study of the explosion limit of pure flammable liquid. Combustible liquid mixtures need to be strictly controlled in production and life, but no method has been found that can accurately estimate the explosion limit of binary mixtures containing low-volatile liquids. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F113/08G06F119/14G06F119/08
CPCG06Q10/06393G06F30/20G06F2113/08G06F2119/14G06F2119/08
Inventor 翁文庆张可方兴王定义李剑波胡程镇
Owner LINGDONG NUCLEAR POWER
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