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Upgrading Centrifugal Compressors With Polymer Seals In An Ethylene Plant - A Case History.
(Texas A&M University. Turbomachinery Laboratories, 2000)
Thermoplastic use a labyrinth seals in rotating equipment is continuing to gain acceptance in the process industries. Presented in this paper is a discussion on thermoplastic use as a labyrinth seal material in centrifugal ...
Critical Review Of Compressor Impeller Vibration Parameters For Failure Prevention.
(Texas A&M University. Turbomachinery Laboratories, 2000)
One of the most difficult diagnostic problems for centrifugal compressors is fatigue failure of an impeller, especially those with covers. The structure of a covered impeller is inherently resistant to alternating forces ...
Multiple Resonance Vibration Mitigation On A 54,000 HP Parallel Shaft Double Helical Speed Increaser.
(Texas A&M University. Turbomachinery Laboratories, 2000)
Test stand vibration measurements on a partially loaded 54,000 hp, parallel shaft, double helical speed increaser revealed synchronous resonant vibrations near normal operating speed. Further testing confirmed the lateral ...
Low Emissions Combustion Technology For Stationary Gas Turbines Engines.
(Texas A&M University. Turbomachinery Laboratories, 2000)
The need to control exhaust emissions from stationary power sources is dictated by environmental regulations that limit the amount of smoke (particulates), sulfur dioxide, carbon monoxide, hydrocarbons, and oxides of ...
Rod Drop Monitoring, Does It Really Work?.
(Texas A&M University. Turbomachinery Laboratories, 2000)
In 1994, the Twenty-Third Turbomachinery Symposium featured the first session of Discussion Group 12, “Reciprocating Compressors.” Each year since its inception, there has been one consistent discussion topic brought up ...
Torsional Vibration Analysis Of Synchronous Motor-Driven Turbomachinery.
(Texas A&M University. Turbomachinery Laboratories, 2000)
One of the foremost concerns facing turbomachinery users today is that of torsional vibration. In contrast to lateral rotordynamics problems, torsional failures are especially heinous since the first symptom of a problem ...
FCC Hot Gas Expander Reliability Upgrade Evaluation.
(Texas A&M University. Turbomachinery Laboratories, 2000)
The hot gas expander (PRT) is an integral part of the refinery’s fluid cat cracker unit’s PRT train. Since 1995, the PRT has experienced four unplanned outages due to blade and steam baffle bolting failures. These failures ...
Recent Technologies For The Reliability And Performance Of Mechanical-Drive Steam Turbines In Ethylene Plants.
(Texas A&M University. Turbomachinery Laboratories, 2000)
Recently, large capacity ethylene plants have been constructed in the world and the trend for the capacity of these plants is increasing. At present it reaches up to about one million tons per year and more. Accordingly, ...
Design Considerations For A 66,000 HP Motor Driving An Air Compressor.
(Texas A&M University. Turbomachinery Laboratories, 2000)
The design of a 66,000 hp electric motor to drive an air compressor presented significant design challenges. Using conventional assumptions in assessing the bearing support and foundation stiffness yielded a scenario where ...
Influence Of Previous Operational Cycle On The Microstructure Of Rejuvenated Ni-Base Superalloy Gas Turbine Blades After Their Return To Service.
(Texas A&M University. Turbomachinery Laboratories, 2000)
The practice of rejuvenating reheat treatments, with and without hot isostatic pressing (HIP), has been successful in restoring severely overaged gas turbine blade microstructure and alloy properties to a nearly “as-new” ...