What type of pumps are used in the Crude Distillation Unit?
1) Initially from crude storage tank to desalter unit.
2) For the pump arounds in the CDU
I have heard they use Gear or PD pumps..
Is it true? Why?
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Posted 26 June 2015 - 11:29 AM
What type of pumps are used in the Crude Distillation Unit?
1) Initially from crude storage tank to desalter unit.
2) For the pump arounds in the CDU
I have heard they use Gear or PD pumps..
Is it true? Why?
Posted 30 June 2015 - 04:16 PM
Dear Jack33,
You can review information about the pump selection in various sources, but initially I recommend the following:
- Neerken, R., "Selecting the Right Pump", Chemical Engineering, April 3, 1978, pages 87-98.
- Karassik I., et. al. Pump Handbook, 3rd. Ed. McGraw-Hill, 2001, Ch. 11: Selecting and Purchasing Pumps.
- Cheremisinoff P., Cheremisinoff N., Process Engineering Data Book, Technomic, 1995, Ch.2.
- Ulrich G., A Guide to Chemical Engineering Process Design and Economics, 1st. Ed., John Willey&Sons, Table 4-20, p. 228 (Spanish edition).
Also I send you information of the web and the chart is from Cole-Parmer Catalog.
The answer to your questions:
1.- If your crude is light centrifugal pump, if crude is heavy gear pump.
2.- Normally centrifugal. Gear or PD is employ principally for viscous liquids (heavy crude oils).
Napo.
Posted 02 July 2015 - 10:28 PM
Jack,
I share Napo answer, adding the following rules-of-thumb:
- Whenever is possible, centrifugal pump are used.
- Gear pumps are often used for delivering viscous crudes from tanks to the CDUs. This is a cold service where centrifugal pumps could have too low efficiency because of the high viscosity
- Centrifugal pumps are always used for pumparonds, that are hot services.
good luck
Edited by gegio1960, 03 July 2015 - 11:43 PM.
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