Thermal analysis of wood fuel pyrolysis process

The paper presents the results of studies of conversion process on the laboratory pyrolysis reactor and the results are compared with data, obtained in model experiments by thermogravimetric analysis (TGA). The heating rates were compared in the pyrolysis reactor and in the laboratory furnace of TGA in the pyrolysis process of wood biomass conversion. The laboratory pyrolysis reactor, as a part of the multistage gasification facility of low-grade solid fuel, was launched in several modes. Three experimental modes of the device operation with different screw speeds and fuel flow rates through the reaction shaft were tested. The temperature profile of fuel and wall along the length of the pyrolysis reactor was shown. The temperature up to 600 °C was recorded in a mode with a low fuel flow rate, and in the end of the reaction zone the fuel temperature was close to that of the wall. The kinetic coefficients and conversion rates for the wood biomass pyrolysis were calculated from the obtained equation. Therefore, the calculated data of the conversion rate and the pyrolysis parameters, based on the TGA data, can be used to further develop the pyrolysis reactor and evaluate the parameters of its operation. © 2018 Institute of Physics Publishing. All rights reserved.The research was performed at Melentiev Energy Systems Institute SB RAS under the support of Russian Science Foundation (Grant № 16-19-10227) and by using the Unique Scientific Plant “High‐temperature circuit”.Russian Foundation for Basic Research (RFBR

Experimental Study of an Internal Combustion Engine Fueled by a Low-Calorific Value Producer Gas

This paper describes an experimental study of the operation of an internal combustion engine of fueled by a low-calorific value gas. The main operating parameters of low-power ICE were determined. Efficiency was also evaluated when the ICE was converted to operate on producer gas. In the experiment, it was shown that the engine reached a stable operating mode under load and data on the temperature and exhaust gases composition were obtained. According to our estimates, in the steady-state operation of the internal combustion engine with a load, the efficiency factor was about 22 %. When using the model gas, the from generator output power, was about 30-40 % of the nominal value, under variable load conditions. However, it was found that in steady-state operation, the power of the internal combustion engine was 40-55% of the nominal value. © 2022 Institute of Physics Publishing. All rights reserved.This reported study was funded by the Russian Foundation for Basic Research (RFBR) No. 19-58-80016; the Department of Science and Technology of India (DST) No. CRG/2018/004610, DST/TDT/TDP-011/2017;the Ministry of Science and Technology of the People’s Republic of China (MOST) No. 2018YFE0183600; the National Research Council of Brazil (CNPq) No. 402849/2019-1; and the National Research Foundation of South Africa (NRF) No. BRIC190321424123; the resources of the High-Temperature Circuit Multi-Access Research Center were used (Ministry of Science and Higher Education of the Russian Federation,ProjectNo.13.CKP.21.0038)