Simulation and optimization of electricity generation by waste to energy unit in Tehran

In this research, using the information obtained from Tehran Municipality, the municipal solid waste incineration plant with a capacity of 4 MW power generation was simulated and the effective parameters were investigated. Then, in order to achieve the power of 19 MW, optimization was done and by exergy analysis, the loss of different parts was determined. Finally, economic and environmental analysis of the process was performed. The results showed that the amount of steam produced by the boiler to cool the exhaust gases of the furnace from 750 to 300 degrees C is equal to 298 tons per day. This amount of steam has a bar pressure of 24 and a temperature of 350 degrees C. The steam sent to the turbine generates 4 MW of electricity. The waste incinerated per day is equal to 180 tons, which requires 1,200 tons of air per day to perform the combustion process. After completing the simulation, it was found that the obtained turbine power is equal to 4.052 MW, which has an error value of 1.34% and also the furnace power is equal to 67510000 kJ / h. Finally, the simulation was optimized to generate 19 MW of electricity and it was determined that the waste discharge should be increased from 180 tons to 879 tons per day.

Automated summary

In this research, a municipal solid waste incineration plant with a capacity of 4 MW power generation was simulated and investigated using data from Tehran Municipality. The effective parameters were analyzed and optimization was carried out to achieve a power output of 19 MW. Exergy analysis was used to determine the losses in different parts of the plant. Economic and environmental analysis of the process was also conducted. The results showed that the plant can produce 298 tons of steam and generate 4 MW of electricity per day, with the incineration of 180 tons of waste and the use of 1,200 tons of air for combustion. The simulation was optimized to generate 19 MW of electricity, requiring an increase in waste discharge to 879 tons per day.