Model Calculation of Heat Balance of Wood Pyrolysis

Abstract

Stoichiometric analysis and heat balance analysis of wood pyrolysis were conducted to improve a pyrolytic gasification system. Heat balance around a pyrolysis furnace was estimated by calculating heat of pyrolysis, sensible and latent heats of products and heat loss of a furnace. Using literature data, macromolecules were expressed by mean compositional formulas, and the heat of pyrolysis was obtained by the stoichiometric approach including the overall equation of pyrolysis. Pyrolysis was exothermic reaction at the range of 773 -1373 K. Despite the exothermic nature of pyrolysis, heat balance calculation around a pyrolysis furnace showed that external heat was required to compensate heat consumption of the sensible and latent heats of products and heat loss of a pyrolysis furnace. When a feed contains moisture, additional external heat was required. To use charcoal as fuel for the external heating to a furnace, the required amount of charcoal was calculated.

Biochar as a Renewable Substitute for Carbon Black in Lithium-Ion Battery Electrodes

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Generating Energy and Greenhouse Gas Inventory Data of Activated Carbon Production Using Machine Learning and Kinetic Based Process Simulation

“…A series of complex chemical reactions are involved in both steps, and it is challenging to directly determine the yields and composition of the products of each step. Yet the yield and composition of the gases and vapors are required to estimate the energy consumption and GHG emissions of AC production . To address this challenge, previous studies used either experiments or literature data for specific feedstocks with a limited set of activation conditions. ,,,, However, such data cannot be accurately extended to a broad array of different feedstocks.…”

High Yield and Quality Charcoal From Oil Palm Kernel Shell With an Improved Pilot-Scale Continuous Carbonisation System

“…The input and output energy of the present study was considered for energy balance calculation (Kodera and Kaiho, 2016). First, Equation (1) was employed to calculate the input energy from the calorific contents of the raw materials.…”