Thus the two operating lines below the feed stage

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: y material balance both lines pass through the bottoms composition on the 45o line. Also note that by material balance, the operating lines for Sections 1 and 4 intersect on the 45o line, and the operating lines for Sections 2 and 3 intersect on the 45o line. Starting from xD = 0.9974, stages are stepped off from the top between the operating line for Section 1 and the equilibrium curve for a few stages before switch to the operating line for Section 2. Then 5 stages are stepped off until the feed stage is reached. Then, 4 stages are stepped off between the operating line for Section 3 and the equilibrium curve before switching to the operating line for Section 4. The switches are made to maintain the same number of total stages, 15, and the same location for the feed stage. Other combinations of arbitrary operating lines and a q-line can be used to illustrate the potential of an intercondenser and interreboiler. The important thing to note is that the addition of an intercondenser and inter...
View Full Document

Ask a homework question - tutors are online