Hutabarat, Ricky (2019) Perancangan Peralatan Penunjang Utama pada Pembangkitan Uap High Voltage Electric Boiler 22 Ton/jam yang Diimplementasikan di PT. Vale Indonesia. Masters thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
02311650022016-Master_Thesis.pdf Download (3MB) | Preview |
Abstract
High Voltage Electrode Boiler (HVEB) adalah bejana pembangkit uap bertekanan yang menggunakan energi listrik sebagai sumber tenaganya. Mekanisme pembangkitan uap pada HVEB adalah dengan mengalirkan energi listrik bertegangan tinggi langsung melalui air berkonduktivitas tinggi yang disirkulasi didalamnya. HVEB umumnya digunakan untuk tujuan penghematan biaya pembangkitan uap ataupun pengoptimasian sumber energi terbaharukan (hydro, wind & PV power) pada periode dimana energi tersebut melimpah. PT. Vale Indonesia memiliki surplus kapasitas hydropower yang rencananya akan dimanfaatkan untuk pembangkitan uap HVEB. Studi ini dilakukan untuk merancang siklus pembangkitan uap HVEB yang tepat dan efisien sesuai kebutuhan PT. Vale Indonesia yaitu 22 ton. steam/jam, 180 psig (saturated steam). Studi dilakukan dalam tiga tahap kajian. Tahap pertama kajian adalah merancang kesetimbangan energi dan massa, tahap kedua yaitu merancang detail spesifikasi komponen penyusun siklus, dan tahap terakhir dikaji dengan simulasi variasi parameter operasi untuk memproyeksi performa HVEB. Peralatan penunjang utama pada siklus pembangkitan uap HVEB tersebut terdiri dari deaerator, blowdown tank dan boiler feed pump. Konsumsi process steam, pengaturan rasio blowdown dan perubahan tekanan operasi adalah tiga parameter yang paling mempengaruhi kinerja HVEB beserta peralatan pendukungnya. Penelitian ini menyimpulkan bahwa dengan semakin meningkatnya konsumsi steam maka penghematan biaya produksi dengan menggunakan HVEB menjadi lebih besar. Disisi lain, pengaruh pengubahan tekanan operasi HVEB hanya memiliki dampak minor terhadap efisiensi dan penghematan biaya. Variasi parameter blowdown rate relatif cukup signifikan mengurangi kapasitas maksimum steam yang dapat dibangkitkan HVEB.
================================================================================================
High Voltage Electrode Boiler (HVEB) is a vessel that utilizes electrical energy as a power source to convert water into pressurized steam. The mechanism of steam generation in HVEB is by flowing high-voltage electricity directly through high-conductivity water circulating inside. HVEB is generally applied to save steam generation costs by optimizing the accumulation of renewable energy (hydro, wind & PV power) in the period in which it is abundant. PT. Vale Indonesia has excess hydropower capacity which is planned to be used for HVEB steam generation. This study was conducted to design an appropriate and efficient HVEB steam generation cycle according to the needs of PT. Vale Indonesia is 22 tons. steam / hour, 180 psig (saturated steam). The study conducted in three stages. The initial stage of the study is to design mass and energy balance, the second stage is to design the detailed specifications of the cycle components, and the final stage is assessed by simulating variations in operating parameters to predict HVEB performance. The main auxiliary equipment of HVEB steam generation cycle are deaerators, blowdown tanks and boiler feed pumps. Process steam consumption, changes in operating pressure and blowdown ratio settings are the three parameters that most influence HVEB performance and its main auxiliary equipment. The study concluded that with increasing in steam consumption, the cost savings of steam generation by using HVEB were higher. On the other hand, the effect of changing HVEB operating pressure has only a minor impact on efficiency and cost savings. Variations in blowdown rate parameters slightly significant reducing the maximum steam capacity that can be generated by HVEB.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTF 621.312 132 Hut p-1 2019 |
| Uncontrolled Keywords: | HVEB, deaerator, boiler feed pump, blowdown, hydropower, saturated steam |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD899.S68 Steam power plants T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30101-(S2) Master Thesis |
| Depositing User: | Ricky Hutabarat |
| Date Deposited: | 11 Apr 2022 07:33 |
| Last Modified: | 11 Apr 2022 07:33 |
| URI: | http://repository.its.ac.id/id/eprint/62274 |
Actions (login required)
 |
View Item |