WHEN TO USE DEPRIESTER CHART PDF
WHEN TO USE DEPRIESTER CHART PLUS

The designer has six degrees of freedom to work with for a binary separation. If the feed is already hot and/or the pressure of the flash drum is quite low, the pump and heater shown in Figure 2-1 may not be needed. The pressures must be chosen so that at the feed pressure, p F, the feed is below its boiling point and remains liquid, while at the pressure of the flash drum, p drum, the feed is above its boiling point and some of it vaporizes. In addition, he or she will need to know how much the original feed has to be pressurized and heated. He or she also wishes to know the pressure, temperature, and flow rate of the feed entering the drum. The designer of a flash system needs to know the pressure and temperature of the flash drum, the size of the drum, and the liquid and vapor compositions and flow rates. Figure 2-1 shows a vertical flash drum, but horizontal drums are also common. Because of the intimate contact between liquid and vapor, the system in the flash chamber is very close to an equilibrium stage. The system is called вЂњflashвЂќ distillation because the vaporization is extremely rapid after the feed enters the drum. A demister or entrainment eliminator is often employed to prevent liquid droplets from being entrained in the vapor. The vapor is taken off overhead, while the liquid drains to the bottom of the drum, where it is withdrawn. Because of the large drop in pressure, part of the fluid vaporizes. The fluid is pressurized and heated and is then passed through a throttling valve or nozzle into the flash drum.

The equipment needed for flash distillation is shown in Figure 2-1. Usually a large degree of separation is not achieved however, in some cases, such as the desalination of seawater, complete separation results. The more volatile component will be more concentrated in the vapor. In this process, part of a feed stream vaporizes in a flash chamber, and the vapor and liquid in equilibrium with each other are separated. One of the simplest separation processes commonly employed is flash distillation.

WHEN TO USE DEPRIESTER CHART PLUS

Aspen Plus Troubleshooting Guide for Separations Chapter 17: Introduction to Adsorption, Chromatography, and Ion Exchange.Chapter 16: Introduction to Membrane Separation Processes.Chapter 14: Extraction of Partially Miscible Systems.Chapter 13: Immiscible Extraction, Washing, Leaching, and Supercritical Extraction.Chapter 11: Economics and Energy Conservation in Distillation.Chapter 10: Staged and Packed Column Design.Chapter 8: Introduction to Complex Distillation Methods.Chapter 7: Approximate Shortcut Methods for Multicomponent Distillation.Chapter 6: Exact Calculation Procedures for Multicomponent Distillation.Chapter 5: Introduction to Multicomponent Distillation.Chapter 4: Column Distillation: Internal Stage-by-Stage Balances.

Chapter 3: Introduction to Column Distillation.Chapter 1: Introduction to Separation Process Engineering.Wankat Separation Process Engineering, Second Edition Lesson5_Exercise4_Tom Smith).Chapter 2: Flash Distillation by Phillip C. Make sure that your name is in the document title before uploadingВ it to the correct assignmentВ (i.e.Find the Exercise 4В assignmentВ in the Lesson 5В ModuleВ byВ either clicking Next until you find it or by clicking Assignments and scrolling down until you find it.

WHEN TO USE DEPRIESTER CHART PDF

Once you have a solution to the exercises you will submit your answers as a PDF by uploading your file to be graded. The rest should be type-written for ease of reading when grading. The scanned pages should relate to using the graphs for solving the problem. Important Note:В You may submit scanned images or clear handwritten pages as a PDF that is less than 2 MB in size for this exercise. Submit your answers as a PDF in the Exercise 4 assignment inside the Lesson 5 Module, showing all the steps in your calculations, indicate the K values you read from the nomograms, and state your assumptions, if any. Would the summer, or winter asphalt product be вЂњheavierвЂќ? Explain why. Explain which of the following switches will take place in the refinery in about a month, and why? 40 ptsДЄ) Switch the deasphalting solvent from propane to pentane.Д«) Switch the deasphalting solvent from pentane to propane. In late fall this refinery switches operations to produce more fuel oil from VDR for the coming winter months, producing still some asphalt, but in lower quantity.

A refinery in Northwest Pennsylvania produces asphalt as an important product that brings revenue, particularly during the summer months.

When to use depriester chart