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Study on the Correlation between Functional Group Structural Parameters and Prediction of Biomass Combustion
Tingting Zhu1, Ziyi Ma1, Jiaxing Niu1
1University of Science and Technology Liaoning, Anshan 114051, China.
None:
In this work, the aim is to predict biomass combustion characteristics based on the semiquantitative analysis of biomass functional group structural parameters. The structural parameters of biomass were calculated by Fourier transform infrared (FT-IR) spectroscopy. Then, a chemical percolation devolatilization model suitable for biomass was used to predict the pyrolysis process of biomass, and the influence of functional group structural parameters on the pyrolysis behavior was analyzed. The combustion characteristics of biomass were investigated by using a thermogravimetric analyzer and visual drop tube furnace. Finally, correlations between functional group structural parameters and combustion characteristics were established. The results show that biomass with a high content of hydroxyl groups (I a1) preferentially generates H2O at 150 °C, leading to a delay in ignition time. Long-chain aliphatic hydrocarbons (I b1) exhibit lower thermal stability, and CH4 and tar are released in 200-400 °C. This accelerates the reaction combustion rate and increases the likelihood of homogeneous ignition. The release rates of CO and CO2 are related to the types of carbon-oxygen functional groups. The content of difficult-to-decompose ether bonds in corn stalks is as high as 33.97%, which does not easily decompose at low temperatures, leading to a long ignition delay time and a reduced probability of homogeneous ignition.
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Introduction to Functional Groups
Functional groups are group of atoms with specific chemical properties that occur within organic molecules and sometimes denoted as “R”. Functional groups are found along the carbon backbone of macromolecules can form chains or rings of carbon atoms. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of common functional groups
The table below summarizes some of the major functional groups in organic chemistry....
Functional Groups
Functional Groups
Overview of Functional Groups
Overview of Advanced Functional Groups
Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.