Pabrik Natrium Hidroksida Dari Brine Dengan Proses Elektrolisis Sel Membran

Febrianti, Intan and Ramadhanti, Dewi Rahmita Aulia (2019) Pabrik Natrium Hidroksida Dari Brine Dengan Proses Elektrolisis Sel Membran. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

NaOH atau caustic soda merupakan salah satu bahan kimia dasar yang memiliki peranan penting pada proses produksi, berbagai industi di Indonesia. Kebutuhan NaOH di Indonesia cukup tinggi dan mengalami peningkatan dari tahun ke tahun namun produksi dalam negeri NaOH belum mencukupi kebutuhan dalam negeri. Perkiraan kebutuhan NaOH di Indonesia pada tahun 2021 sebesar 868.628 ton/tahun. Semakin besarnya kebutuhan NaOH di Indonesia memberikan peluang untuk didirikan sebuah pabrik NaOH. Proses pembuatan NaOH dari Brine dilakukan melalui 4 tahap. Tahap pertama adalah tahap pretreatment digunakan untuk memurnikan Brine dengan proses klarifier, filtrasi dengan sand filter, serta proses pertukaran ion dengan kation dan anion exchanger. Tahap kedua adalah pembuatan NaOH dengan proses elektrolisis dengan ion exchange membrane sebagai transportasi kation Na+ untuk direaksikan dengan ion OH- . Tahap ketiga adalah tahap pemekatan, yang dilakukan menggunakan multiple effect evaporator untuk menghasilkan NaOH cair 50%, lalu dengan single effect evaporator untuk menghasilkan NaOH cair 63% dan menggunakan flash evaporator menghasilkan NaOH cair 97%. Tahap terakhir adalah tahap pembentukan NaOH prilling, yang dilakukan pada prilling tower deangan menghasilkan produk NaOH prills 97%. Pabrik ini direncanakan beroperasi secara kontinyu selama 330 hari/tahun dengan basis 24 jam/hari. Bahan baku Brine sebanyak 276429,5 kg/jam. Kebutuhan utilitasnya adalah air sanitasi, air pendingin, air boiler dan air proses.
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NaOH or Caustic soda is one of the basic chemicals that have an important role in the production process, various industry in Indonesia. The need for NaOH in Indonesia is quite high and increase from year to year but the domestic production of NaOH has not been sufficient for domestic needs. Estimated requirement of NaOH in Indonesia by 2021 amounted to 868.628 tons / year. The growing need for NaOH in Indonesia provides an opportunity for the establishment of a NaOH plant. The process of making NaOH from Brine is carried out in 4 stages. The first stage is the pretreatment stage used to purify the Brine by clarifier process, filtration with sand filter and plate and frame filter, and ion exchange process with cation and anion exchanger. The second stage is the making of NaOH by electrolysis process with ion exchange membrane as Na+ cation transport to be reacted with OH -ion. The third stage is mounting concentration, which is carried out using a multi-effect evaporator to produce 50% liquid NaOH, then with a single effect evaporator to produce liquid NaOH 63% and using flash evaporator to produce liquid NaOH 97%. The last stage is the stage of making prilling NaOH, which is carried out on the prilling tower and produces 97% NaOH prills. Factory The plant is planned to operate continuously for 330 days / year on a 24 hour / day basis. The raw material of Brine is 276429,5 kg / hour. Its utility needs are water sanitation, cooling water, boiler water and process water.

Item Type:	Thesis (Diploma)
Additional Information:	RSKI 660.297 Feb p-1 2019
Uncontrolled Keywords:	Naoh,Brine,Elektrolisis
Subjects:	T Technology > TP Chemical technology > TP248.25.M46 Membrane separation
Divisions:	Faculty of Industrial Technology > Chemical Engineering > 24401-(D3) Diploma 3
Depositing User:	Febrianti Intan
Date Deposited:	13 Aug 2026 03:20
Last Modified:	13 Aug 2026 03:20
URI:	http://repository.its.ac.id/id/eprint/67485

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