Which of the following is NOT an advantage of fluidized bed combustion?

Fluidized bed combustion is recognized for several significant advantages in the realm of power engineering. The choice indicating increased carbon emissions stands out as the correct response to the question posed.

Fluidized bed combustion is designed to be more efficient in fuel combustion and to reduce harmful emissions compared to traditional combustion methods. One of the notable advantages includes efficient heat transfer, which allows for the design of less costly boilers. The process utilizes fine particles to create a fluid-like state, enhancing heat and mass transfer, thus leading to more effective combustion processes overall.

In addition, fluidized bed systems often eliminate the need for pulverizing equipment, as fuel can be fed in larger chunks, which reduces energy consumption and simplifies the fuel preparation process. This brings about a more convenient and cost-effective handling of the fuels being burned.

Moreover, fluidized bed combustion is effective at reducing sulfur dioxide (SO2) emissions by using an additive like crushed limestone during the combustion process. The limestone reacts with sulfur compounds, thereby significantly diminishing the emission of SO2, which is a major contributor to acid rain.

Thus, the mention of increased carbon emissions contradicts the foundations of fluidized bed technology, which actively works towards reducing harmful emissions, including CO2, through better combustion efficiency and reduced unburned