cbems 149b - team 11 (final poster)
TRANSCRIPT
DESIGN AND OPTIMIZATION OF A CRUDE DISTILLATION UNITMichael Capistrano, Joseph Pham, Steven Bui, Fareed Ahmed, Kayvon Hosseini
Faculty Advisor: Cesar Ruiz, PEDepartment of Chemical Engineering and Materials Science
University of California, Irvine
Background
References
Objectives
ContactEmail: [email protected]: www.linkedin.com/in/michaelceit
The project aims to provide a comprehensive engineering design proposal to a prospective client given specific design criteria for a crude distillation unit with a normal capacity of 165,000 BPD from a crude oil blend.
Two drums, horizontal and vertical, are sized as a simple storage vessel and a flash separator respectively. They are sized to meet safety requirements based on given flowrates and operating pressures derived from Pro/II and liquid level design criteria.
A typical crude oil distillation unit includes a main distillation column with side-strippers and several auxiliary equipment such as desalters, heat exchangers, and hydraulic pumps. This unit is designed to extract the desired petroleum products from crude oil such as naphtha, turbosene, and diesel.
1. Peters, Max S., and Klaus D. Timmerhaus. Plant Design and Economics for Chemical Engineers. 5th ed. New York: McGraw-Hill, 2001.
2. Poling, Bruce E. Perry's Chemical Engineers' Handbook. 8th ed. New York: McGraw-Hill, 2008.
Cost Calculated values ($M)
Calculated values ($M)
Total Direct Cost 50.72
Total Indirect Cost 20.29
Fixed Capital Investment 71.01
Working Capital 12.54
Total Capital Investment 83.55
Methods1. The crude distillation
simulation is performed in Pro/II to gather pertinent materials and thermodynamic data for heat integration and vessel sizing.
2. Cost estimations are based on 2001 equipment pricing available online.
To minimize utility costs, hot product streams and column pump-arounds (PA) are used in the three stages of preheating (PH) the crude oil. The heat integration optimizes the number of shells required. It also measures the surplus heat (Q+) before fired heating and the remaining duties (Q-) to cool down the different products.
The various pumps are designed to meet standards to prevent cavitation. Calculations take into account variable friction losses and static head at the source and destination.
The preliminary cost estimate of the new unit is based on the total cost of delivered equipment. This is adjusted to 2014 dollar amount and to appropriate sizing. Estimation of other direct costs, indirect costs and working capital are based on a fraction of the delivered equipment.
Heat Integration Cost Estimation
Vessel Sizing Pump Calculations
Future Work
Determine the optimal locations of equipment on plant site
Fine-tune the design of equipment, piping and instruments with expanded engineering team
Perform hazard and operability studies Verify cost based on vendor quotes Consult with clients for project feasibility
AcknowledgmentsWe would like to thank our advisor, Cesar Ruiz, for his guidance and expertise in providing insight into industry standards. We would also like to thank the Department of Chemical Engineering and Materials Science for funding this exhibition.
Total direct cost61%
Total indirect cost24%
Working cap-ital
15%