How many kg of fuel to evaporate 1 kg water in spray drying tower?

The amount of fuel required to evaporate 1 kg of water in a spray drying tower varies based on factors such as the efficiency of the drying process and the type of fuel used. Generally, it takes about 1.5 to 3 kg of fuel to evaporate 1 kg of water, depending on the specific energy requirements of the system and operational conditions. Efficient systems may reduce this ratio, while less efficient ones may require more fuel.