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(Daily Question) Coal-to-Oil and Olefins Forum, April 16, 2018

2018-04-16View Original

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3.jpg Participation: Prize of 5 Wealth; Correct answer: Reward of 10 wealth points ; Note: This post is valid for 48 hours. Question: (DMTO) Olefin separation unit: Why is the rehydration system circulated before starting the condensing turbine? Since a vacuum must be created before starting the turbine, the primary and secondary jet pumps require water to cool the steam ejected from their nozzles, and water is also needed at each water seal point; therefore, the feedwater pump must be started before the ejectors, in order to condense the steam coming out of the jet pumps into water, which is then sent to the feedwater reheater. Note: The answers will be released automatically in two days!
Reply #22018-04-16
Because a vacuum is created before starting the turbine, the ejector needs water to cool the steam ejected from its nozzle. Therefore, the reheat pump must be started before the ejector; the steam emitted by the ejector is condensed into water and then sent to the reheater.
Reply #32018-04-16
Since a vacuum must be created before starting the turbine, the primary and secondary jet pumps require water to cool the steam ejected from their nozzles, and water is also needed at each water seal point; therefore, the feedwater pump must be started before the ejectors, in order to condense the steam coming out of the jet pumps into water, which is then sent to the feedwater reheater.
Reply #42018-04-16
Since a vacuum must be created before starting the turbine, the primary and secondary jet pumps require water to cool the steam ejected from their nozzles, and water is also needed at each water seal point; therefore, the feedwater pump must be started before the ejectors, in order to condense the steam coming out of the jet pumps into water, which is then sent to the feedwater reheater
Reply #52018-04-16
Since a vacuum must be created before starting the turbine, the primary and secondary jet pumps require water to cool the steam ejected from their nozzles, and water is also needed at each water seal point; therefore, the feedwater pump must be started before the ejectors, in order to condense the steam coming out of the jet pumps into water, which is then sent to the feedwater reheater
Reply #62018-04-16
Because a vacuum is created before starting the turbine, the ejector needs water to cool the steam ejected from its nozzle. Therefore, the reheat pump must be started before the ejector; the steam emitted by the ejector is condensed into water and then sent to the reheater.
Reply #72018-04-16
Because a vacuum is created before starting the turbine, the ejector needs water to cool the steam ejected from its nozzle. Therefore, the feedwater pump must be started before the ejector, so that the steam in the ejector can be condensed into water and then sent to the feedwater reclaimer.
Reply #82018-04-16
Since a vacuum must be created before starting the turbine, the primary and secondary jet pumps require water to cool the steam ejected from their nozzles, and water is also needed at each water seal point; therefore, the feedwater pump must be started before the ejectors, in order to condense the steam coming out of the jet pumps into water, which is then sent to the feedwater reheater.
Reply #92018-04-16
Since a vacuum must be created before starting the turbine, the primary and secondary jet pumps require water to cool the steam ejected from their nozzles, and water is also needed at each water seal point; therefore, the feedwater pump must be started before the ejectors, in order to condense the steam coming out of the jet pumps into water, which is then sent to the feedwater reheater.
Reply #102018-04-16
Since a vacuum must be created before starting the turbine, the primary and secondary jet pumps require water to cool the steam ejected from their nozzles, and water is also needed at each water seal point; therefore, the feedwater pump must be started before the ejectors, in order to condense the steam coming out of the jet pumps into water, which is then sent to the feedwater reheater.

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