How to prepare the logistics balance sheet for PFD?

The logistics balance sheet associated with PFD is typically used to describe the flow of materials, including inputs, outputs, and intermediate processes. The specific steps are: 1. List all material inputs and outputs on the PFD. 2. For each material, locate its corresponding processing unit on the PFD, and determine the input and output quantities of that material in the processing unit. 3. Fill in the input and output quantities in the material flow balance table, and determine the positive or negative signs based on the flow direction of the materials in the PFD. 4. Calculate the material balance for each processing unit sequentially, in order from top to bottom. 5. Finally, verify whether the balance amount for each material is zero; if it is not zero, it is necessary to check whether there are any issues or errors in the design of the PFD or the processing unit. It should be noted that the logistics balance sheet associated with the PFD is established on the premise that the PFD itself is accurate; therefore, it is necessary to ensure the correctness of the PFD design before creating the logistics balance sheet. .

The PFD material balance is determined based on process simulation or experimental results