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residence time |
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residence time [′rez·ə·dəns ‚tīm] (chemical engineering) The average length of time a particle of reactant spends within a process vessel or in contact with a catalyst. (nucleonics) The time during which radioactive material remains in the atmosphere following the detonation of a nuclear explosive; it is usually expressed as a half-time, since the time for all material to leave the atmosphere is not well known. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Processes with long residence times or higher temperatures--like fiber spinning at up to 450 F--need more drying, to less than 50 ppm of moisture. The line speeds, LCM residence times and LCM temperatures are given in table 1. The uptake and elimination residence times for BDCM are not known and are unlikely to be the same as those for CH[Cl. |
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