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Carbonized combustible pyrolysis kinetic parameter calculation method based on single-peak pyrolysis curve

A technology of kinetic parameters and pyrolysis curves, applied in chemical statistics, chemical data mining, chemical process analysis/design, etc., can solve problems such as high optimization efficiency and good calculation accuracy, and achieve improved accuracy and high accuracy , the effect of fast calculation speed

Active Publication Date: 2019-12-06
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0004] The present invention aims at the problems existing in solving the existing carbonized combustible unimodal pyrolysis kinetic parameters, and provides a kind of carbonized combustible pyrolysis based on unimodal pyrolysis curve Kinetic parameter calculation method, which reduces the difficulty and complexity of solving high-order partial differential equations for single-peak pyrolysis of carbonized combustibles; good calculation accuracy; high optimization efficiency; wide range of applications, and can be applied to multiple sets of heating rates and various In the unimodal pyrolysis solution of carbonized combustibles, the results are efficiently calculated

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  • Carbonized combustible pyrolysis kinetic parameter calculation method based on single-peak pyrolysis curve
  • Carbonized combustible pyrolysis kinetic parameter calculation method based on single-peak pyrolysis curve
  • Carbonized combustible pyrolysis kinetic parameter calculation method based on single-peak pyrolysis curve

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specific Embodiment

[0059] This embodiment provides an implementation case of solving and optimizing the pyrolysis kinetic parameters of carbonized combustibles based on the unimodal pyrolysis curve. In the example, the unimodal EPS of the external wall insulation material is pyrolyzed in a nitrogen environment.

[0060] In step S1, the EPS single peak of the external wall insulation material is pyrolyzed in a nitrogen environment, and the pyrolysis single-step reaction formula is:

[0061] Solid → v carbon + (1-v) volatile matter, v is the carbon generation rate. When the single-peak reaction mechanism of EPS is not grasped, by the equal conversion rate method FWO method, at different heating rates of 5k / min and 20k / min, the measured values ​​are 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, the temperature at 15 conversion values. According to the formula: lnβ=ln(AE / Rg(α))-5.331-1.052(E / RT), where R represents the universal gas constant, β represents t...

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Abstract

The invention discloses a carbonized combustible pyrolysis kinetic parameter calculation method based on a single-peak pyrolysis curve. The method comprises the steps: calculating the activation energy value E of combustible single-peak pyrolysis through an equal conversion rate method FWO method; assuming a plurality of reaction mechanisms, calculating an activation energy value E through a CR method, comparing the activation energy value E with a value obtained through an FWO method, determining a reaction mechanism function f(alpha) of unimodal pyrolysis of the combustible, and calculatinga pre-exponential factor A; determining a value range of solving parameters; and optimizing the pre-exponential factor A, the activation energy value E and the carbon generation rate v through a particle swarm artificial intelligence (PSO) optimization algorithm, and outputting a calculation result in the case of an optimal solution. According to the method, the difficulty of solving the unimodalpyrolysis high-order partial differential equation of the combustible is reduced; the calculation precision is high; the optimization efficiency is high; the application range is wide, the method canbe applied to single-peak pyrolysis solution of multiple groups of heating rates and multiple combustibles at the same time, and the experiment result is effectively predicted.

Description

technical field [0001] The invention relates to a method for calculating pyrolysis kinetic parameters of carbonized combustibles based on unimodal pyrolysis curves, in particular to the solution and optimization of unimodal pyrolysis kinetic parameters of carbonized combustibles, by writing particle swarm artificial intelligence optimization algorithm (PSO ) script main program and set algorithm parameters, run the PSO script main program, iteratively calculate, search for the optimal solution and deviation degree of each parameter, and belong to the field of solving and optimizing the single-peak pyrolysis kinetic parameters of carbonized combustibles. Background technique [0002] In the context of the world energy crisis, the consumption of non-renewable energy urgently requires the development of new energy technologies. Through the pyrolysis of carbonized combustibles, carbonized combustibles, liquid and gas products can be obtained to realize the renewable utilization o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C20/10G16C20/70G06N3/00
CPCG16C20/10G16C20/70G06N3/006
Inventor 丁彦铭张文龙毛少华黄必清
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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