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Penentuan Laju Alir Penambahan Naoh Dan So2 Untuk Meminimalkan Excess Sulfite Pada Dechlorinated Tank

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ABSTRACT
The production of caustic soda (NaOH) uses the electrolysis method in an
electrolyzer using 300 gpl of sodium chloride (NaCl). In addition to producing
caustic soda (NaOH), this process also produces chlorine gas which in the
chemical plant department is used for the production of hydrochloric acid gas
(HCl) and sodium hypochlorate (NaOCl). The side product is a weak brine with a
concentration of about 220 gpl. Weak brine will return to the brine system to be
saturated again. It is important to ensure that the weak brine by the electrolyzer
does not contain chlorine. This is because it can interfere with the efficiency of
resin performance in the ion exchanger in the brine system. To ensure that the
weak brine does not contain chlorine, the chlorine removal steps are carried out.
One of the steps is the addition of caustic soda (NaOH) and sulfur dioxide (SO2)
to form sodium sulfite (Na2SO3). Sodium sulfite (Na2SO3) will react with dissolved
chlorine to form sodium chloride (NaCl). At this stage, the parameter to be
maintained is the excess sulfite value of 50-100 ppm to ensure removal of
dissolved chlorine. Through this final project, it is hoped that the results of
guidance data for the addition of flow rate of caustic soda (NaOH) and sulfur
dioxide (SO2) at each variation of electrical load and pH. This data can keep
excess sulfite levels not exceeding 50 ppm and the target pH on the dechlorinated
tank is reached.
Keywords: electrical load, excess sulfite, pH, caustic soda, sulfur dioxide

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

07 02. 021 (0050)

Penerbit

Pekanbaru : Universitas Riau – Fakultas Teknik - Teknologi Pulp Dan Kertas D III., 2021

Deskripsi Fisik

xii, 29 hlm.; ill.: 29 cm

Bahasa

ISBN/ISSN

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Klasifikasi

07 02. 021 (0050)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Daus

Versi lain/terkait

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