Biomass Pyrolysis and Gasification Comprehensive Modeling for Effective Power Generation at Combined Cycle Power Plant

Abstract

Thermogravimetric experiments were carried out for a few types of wood with determination of the kinetic parameters characterizing the pyrolysis process. In the present work the various kinetic models used for this purpose are suggested. Analyzing software tool for calculation of thermal conversion products and reactor balance is developed. The optimal temperature range for biomass pyrolysis is identified using this tool. The influence of steam and air flow rates on the gasification products is represented. The impact of operating parameters on the synthesis gas composition was evaluated. Comparison of the computational model and the results obtained during experimental studies on the existing gasifier were carried out. The combined cycle power plant involving the biomass gasification process has been numerically simulated in the Aspen Plus. Calculations of the optimal operating parameters of different thermal process components and of the entire combined cycle power plant system were performed.

Influence of heat pumps inclusion in deaeration scheme of heating network make-up water on the operating modes of the TPP

“…All calculations were made for the simplest scheme of HP vapor compression. For all the options considered, the difference between the temperature in the HP evaporator and the temperature in its condenser was less than 33 ° C, so the operation of such an installation is effective, and the COP values varied from 4.9 to 7 in different modes [19,20,21]. For calculations, we used reference data of PJSC "TGC-1" tariffs for heat, purchase and sale of electricity in 2018.…”

Differentiation of wholesale prices for organic agricultural products

“…Taking into account the organizational and economic conditions, the most acceptable form of creation and functioning of cooperatives is chosen, which, even with high inflation, helps partners (producers and enterprises) eliminate problems that prevent reduction of prices [10].…”

Research into vertical axial elements in seasonally frozen grounds

“…Displacements of VAE are the major cause of inadmissible deformations of the foundations of structures in the regions with seasonally frozen grounds if those foundations were constructed without taking measures to exclude or reduce the deformation of foundations during springautumn periods. In this connection, we have conducted a research into the changes of stregnth and deformation properties of grounds in relation to the water content as these are the major parameters of sagging of the foundations of structures [8][9][10][11][12][13]. The research was aimed at the establishment of correlation dependency of the shear stregnthon the water content.…”