Material & Energy balance example: Spray Drier

In the previous blog, material and energy balance in process design, I revised common principles of mass and energy balance. Balances on spray driers, kilns, furnace and filters has been described briefly. In this blog, I will describe the details of spray drier mass and energy balance. 

The figure below shows the components of a spray drier system configuration. Drying air is first heated in the heater to the desired temperature as determined partly by the product property.The material to be dried is sprayed by spray system( nozzles) into the drying chamber. The dried product is collected by product

Material and energy balance in process plant design

Once the literature survey in done and the specific objectives and the plant size has been determined from demand study, the next step is to do the mass and energy balance. This is a crutial step as it affects the sizing and thus the economics of the plant.  

In this blog, I will revise some principles and state how to do balances on filters, distillation columns, kilns and so on. Soon I will add more posts on solved energy and material balances on some key processes. Please subscribe to get email updates on the coming posts which you shouldn´t miss.

The market demand study and raw material availability studies give us the proper size of the manufacturing plant. The size of the plant should balance the raw material availability and the market demand. Based on this, the material and energy balances are done.

Using the information form demand study determine the capacity of the plant in terms of total annual production or total raw material requirement. This leads to the following ways of making balances.

There are two approaches for performing material and energy balances; upstream and downstream ways as known informally. In the upstream the balance is started from the last