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* PDF α Ͻñ ٶϴ. |
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2000 / ȣ: V.12,no.4,Aug |
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Development of NaOH Concentration Control System for a Liquor-Flow Polyester Hydrolysis Machine |
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(λб а) (λб а) (б ȭаа) ڱ (λб а) Ȳ (ɴ а) (λб а) |
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233 ~ 238 : 6 |
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Korean |
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In this study, the control system of sodium hydroxide was demonstrated to systemize hydrolysis process in polyester dyeing. We mainly focused on the application method of acid-alkali titration for the polyester hydrolysis machine of liquor-flow type. Industrial pH meter with electrode type was used for identifying equivalence point. Three units which were analogue-to-digital card, microprocessor and digital output card were used to control NaOH concentration in the control part of the system. The yielded data are translated to the microprocessor through analogue-digital interfacing card. After calculating, NaOH concentration in NaOH storage tank was controlled through the digital output card and solenoid valves. |
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