Raditya, Robertus (2017) Perancangan Sistem Pengendalian pH antara Reaksi H2S dan NaOH pada Caustic Scrubber dengan menggunakan Metode Fuzzy Logic. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Caustic scrubber merupakan salah satu teknologi yang digunakan untuk memisahkan kandungan H2S dari natural gas. Produk yang dihasilkan oleh caustic scrubber adalah NaHS. Untuk menjaga kualitas dari produk NaHS diperlukan pengendalian pH pada Caustic scrubber agar pH dari NaHS yang dihasilkan dapat dijaga pada range 10-11. Pengendalian pH didasari dari dua bentuk pemodelan matematis, dimana terdapat pemodelan statik yang dilakukan berdasarkan konsep reaksi invariant dan pemodelan dinamik yang dirumuskan melalui persamaan material balance pada plant. Penilitian ini bertujuan untuk merancang sistem pengendalian pH pada caustic scrubber untuk menjaga kualitas produk NaHS dengan menggunakan metode fuzzy-PID gain scheduling. Berdasarkan hasil simulasi, pengendali fuzzy PID memiliki respon yang lebih baik daripada pengendali PID biasa, dengan nilai error yang lebih kecil sebesar 0.540% dan settling time sebesar 117 detik, sementara pengendali PID memiliki error 0.596% dengan settling time 119 detik.
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Caustic scrubber is one of the latest technologies used to separate the H2S content from natural gas. The product produced by Caustic scrubber is NaHS. To maintain the quality of the NaHS product, pH control of Caustic scrubber is required so that the pH of the resulting NaHS can be maintained in the range of 10-11. The pH control is based on two forms of mathematical modeling, in which there are static modeling based on the concept of invariant reactions and dynamic modeling that is formulated through the material balance equation in the plant. This research aims to design pH control system in caustic scrubber to maintain the quality of NaHS product by using fuzzy-PID gain scheduling method. Based on the simulation result, the fuzzy PID controller has better response than the normal PID controller, with a smaller error value of 0.540% and the settling time of 117 seconds, while the PID controller has 0.596% error with a settling time of 119 seconds
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | caustic scrubber, fuzzy-PID, H2S, NaOH, pH, statik, dinamik |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL521.3 Automatic Control |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Raditya Robertus |
| Date Deposited: | 11 Oct 2017 01:48 |
| Last Modified: | 08 Mar 2019 02:22 |
| URI: | http://repository.its.ac.id/id/eprint/45968 |
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