Improving solid-fuel pyrolysis and gasification for effective cogeneration

Abstract

The thermal conversion of solid fuel is considered (for the example of biomass), with assessment of the yield of volatiles and coke residue. The optimal temperature range for its pyrolysis (the range corresponding to maximum heat of combustion of the gases per unit mass of the initial product) is identified. The influence of steam and air flow rates on the gasification products is studied. A system for the generation of thermal and elec trical energy in the steam-gas cycle is proposed, with a biomass gasification unit. The energy loads of a popula tion center are calculated, with engineering and economic assessment of the steam-gas cycle. Biomass based cycles are compared, from the perspective of the energy efficiency of a cogeneration system.

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

“…The synthesis gas and char prepared from different types of biomass can be used in small scale power engineering for the combined production of electrical and thermal energy for the needs of the power supply of settlements and small cities. Comparative analysis of steam -gas cycles based on the pyrolysis and gasification of biomass permits the following conclusions [11].…”

Some aspects of use of organic containing waste for electrical and thermal energy generation

“…Some of its components, such as metal, plastic, ceramics, are recyclable and reusable [1], food waste can be biodegradable. A significant part of waste (about 30% by volume of MSW) is not recyclable, the organic-containing part of such waste can be subjected to thermal utilization in order to generate thermal and electric energy [2][3][4][5]. The leaders in the field of MSW processing are Japan, where 75% of MSW are processed, USA (46%), Switzerland (53%) [6], Denmark (46.3%), the Netherlands (51.7%), Germany (66.1%), Sweden (48 %), France (39.5%) [7].…”