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Sundyne Integrally Geared Centrifugal Pumps Selected for Critical High Pressure Purge Oil Feed Service
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HMP-5000 pump and seal support skids
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A modernization project at a refinery includes the installation of new residue upgradation units to process the refinery’s vacuum residue. Residue upgradation is a process that helps refineries maximize the returns out of every barrel of oil. Chevron Lummus Global license was selected for the residue upgradation. The refinery contacted Sundyne for a solution to their need for API compliant high-pressure purge oil feed pumps. Sundyne’s integrally geared centrifugal pumps (HMP) are ideal for this application, which requires low flow and high head. Sundyne optimizes the pump hydraulics to achieve the best efficiency, curve shape, NPSHr, and radial loading to provide economical and reliable operation. In this purge oil feed service, two high-speed stages in series are used to produce the required head.
The purge oil feed pumps presented several significant challenges:
- The elevated suction temperature required extensive thermal analysis to calculate thermal induced stresses and adjust the pump design accordingly.
- To maintain the high purge oil temperature, the pump was insulated with a blanket and the piping was steam traced with tubing covered with rock wool and into an aluminum shell.
- The high pressure in the second stage required a special design to reduce the seal cavity pressure and protect the double mechanical seal.
- The dimensional constraints were high; engineers designed a very compact package.
- The complete unit was tested at Sundyne, not just the pump as is usually the case.
Sundyne is proud to be contributing its high-speed pump technology to the new residue upgradation facility. This project is valuable to both the refinery and the environment.
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Sundyne World Headquarters
14845 W. 64th Ave. | Arvada, CO 80007 | USA | +1 303-425-0800 |
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