Diagnostic method for gas separating system

A diagnostic method for a gas separating system is provided. The gas separating system comprises a low pressure distillation tower. The diagnostic method comprises the steps of: (A) obtaining a temperature inside the low pressure distillation tower; (B) calculating a temperature change rate of the l...

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Bibliographic Details
Main Authors LI, MING-WEI, GAO, XIAN-JUN, CHEN, DING-SHUO, TANG, EN-RONG, SHEN, RUI-FU
Format Patent
LanguageChinese
English
Published 16.03.2014
Subjects
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:A diagnostic method for a gas separating system is provided. The gas separating system comprises a low pressure distillation tower. The diagnostic method comprises the steps of: (A) obtaining a temperature inside the low pressure distillation tower; (B) calculating a temperature change rate of the low pressure distillation tower; and (C) increasing the temperature of the low pressure distillation tower if the temperature of the low pressure distillation tower continues to decrease and the temperature change rate of the low pressure distillation tower is greater than 0.01℃/min. A nitrogen concentration inside the low pressure distillation tower can be derived from the temperature change rate of the low pressure distillation tower. Moreover, the temperature of the low pressure distillation tower is increased if the temperature of the low pressure distillation tower continues to decrease and the temperature change rate of the low pressure distillation tower is greater than 0.01℃/min, thus to avoid nitrogen block
Bibliography:Application Number: TW20120133015