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Process for preparing a liquid caustic composition for use in reactive dyeing which has target total and active alkalinities
Process for preparing a liquid caustic composition for use in reactive dyeing which has target total and active alkalinities
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机译：具有目标总碱度和活性碱度的用于反应性染色的液态苛性碱组合物的制备方法
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摘要
Liquid caustic compositions for use in reactive dyeing, having total and alkaline activities approximating the total and alkaline activities of a predetermined liquid caustic composition are prepared by providing a source of water; providing a container of concentrated sodium hydroxide solution; providing a container of liquid buffered alkali solution; providing a mixer communicating with the containers; providing at least one liquid caustic solution storage tank in communication with the mixer; providing flow meters communicating with the mixer to monitor the quantities of sodium hydroxide and buffered alkali flowing to the mixer; determining the total and active alkalinities of the target liquid caustic composition; determining the quantities of sodium hydroxide and buffered alkali solutions required to provide a liquid caustic solution having total and active alkalinities approximating the total and active alkalinities of the target solution; diluting the concentrated sodium hydroxide with the water to form dilute sodium hydroxide; feeding controlled quantities of the dilute sodium hydroxide and buffered alkali to the mixer; and mixing the sodium hydroxide and buffered alkali to form the desired liquid caustic solution.
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