Simulation of a process for the two-stage thermal conversion of biomass into the synthesis gas

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Kosov, V.F.^1 ; Lavrenov, V.A.^1 ; Zaichenko, V.M.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

关键词: Biomass residue;    Carbon content;    Experimental investigations;    Operation mode;    Pyrolysis products;    Thermal conversion;    Total efficiency;    Wood biomass;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012031/pdf
DOI  :  10.1088/1742-6596/653/1/012031

来源: IOP

【 摘 要 】

The paper presents results of simulation of a process for the two-stage thermal conversion of wood biomass into the synthesis gas. The first stage of process is pyrolysis of raw materials, the second stage is cracking of volatile pyrolysis products which blown through the char at a temperature of about 1000° C. Char is a porous biomass residue with carbon content about 90%. The simulation based on the results of experimental investigations of a pilot plant with capacity up to 50 kg of raw material per hour. The main result of simulation is estimation of an energy conversion efficiency of wood biomass into synthesis gas for three different operation modes. The first mode is conversion of biomass into fuel gas and char, and the char is not further used. The second mode is the same, but char used as fuel for producing heat for own demand of the process. The third mode includes gasification of char by means of water steam, aimed to obtaining an additional yield of synthesis gas. The simulation shown, that total efficiency of power plant was 17.1% in the first mode, 22.4% in the second mode and 22.6% in the third mode.