Abstract
The study presents a concept of integration a gasifier system with distributed generation of electricity and heat cogeneration system based on a gas microturbine. The gas generator is supplied by the RDF fuel from waste and biomass fuel Bio-CONOx. In the scale considered, the cogeneration system is designed to produce 30kWe of electricity and approx. 50kW of heat. Important perspective directions of technology development are: (i) the possibility of gas microturbine to cooperate with the gasifier (up to date, in such systems were used, and continue to apply only piston engines), (ii) the production of syngas in the gasifier (for efficient cogeneration) in the composition of which there is a high content of methane (CH 4 = 18%-22%). In the first step of possible commercialization a mathematical model to simulate single shaft gas turbine cogeneration plant has been developed. In conceptual design is application of microturbine as the prime mover of Combined Heat and Power (CHP) system but with especial emphasis on possible use of a low calorific gas attainable from presented in details a gasifier unit. To support the calculations for preliminary design analysis, a computer program is developed in EES software environment.
Highlights
The use of gasifiers in the energy sector is limited by too low efficiency of chemical energy conversion in the fuel, into chemical energy derived from post-processing gas
The effect of process improvements has been achieved by reactive additives to fuels, that affect the increase in the content of flammable components in the generator gas, which translates into an increase in the calorific value of the syngas
The test results of RDF fuel gasification containing formulation Bio-CONOx are shown in Fig. 2 and 3
Summary
The use of gasifiers in the energy sector is limited by too low efficiency of chemical energy conversion in the fuel, into chemical energy derived from post-processing gas. The effect of process improvements has been achieved by reactive additives to fuels, that affect the increase in the content of flammable components in the generator gas, which translates into an increase in the calorific value of the syngas. The additives to fuels do not play the catalyst role, they are additional fuel- a substrate taking part in the thermal change process Their participation does not significantly increase the calorific value of the fuel. The resulting gaseous fuel with high calorific value, achieved through significantly increased content of CH4. Such obtained and tested gasifier system can be treated as a very interesting source of fuel which is applicable to supply a gas microturbine and to create a concept of cogeneration plant designed for supply industrial process or residential needs with pressurized, hot water
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