Yudha, Alam Tri (2023) Studi Numerik Sudut Tilt Burner, Sudut Tilt Dan Yaw Sofa (Separated Over Fire Air) Yang Menghasilkan Deviasi Rear Pass Temperature Boiler Dan Nox Content Optimal Pada Tangentially Fired Pulverized Coal Boiler 625 Mw. Masters thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 6007201035-Master_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
6007201035-Master_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 April 2025. Download (4MB) | Request a copy |
Abstract
PLTU Banten 1 Suralaya merupakan pembangkit listrik dengan tipe tangentially fired pulverized coal boiler yang didesain menggunakan batubara 3900 - 4500 kcal/kg LHV. Boiler PLTU Banten 1 Suralaya dilengkapi fasilitas tilting burner, tilting dan yawing SOFA (Separated Over Fire Air) dimana fasilitas ini memungkinkan burner untuk dapat diarahkan ke atas maupun ke bawah membentuk sudut tertentu terhadap garis horizontal. Sudut tilting burner berfungsi untuk mengontrol posisi vertikal pembakaran dan juga ukuran nyala api untuk menghasilkan distribusi temperatur yang yang seragam ke semua tube boiler. Sedangkan sudut tilting dan yawing SOFA dapat diatur sudutnya secara vertikal maupun horizontal dengan besar sudut yang sama. Pengaturan secara vertikal akan berpengaruh terhadap pengontrol NOx, sedangkan pengaturan secara horizontal akan berpengaruh pada pengontrol level CO. Pengaturan secara horizontal juga dapat membantu mengurangi ketidakseimbangan O2 pada outlet. Namun demikian, pengaturan setting tilt burner, tilt dan yaw SOFA tersebut sulit untuk dilakukan secara langsung pada saat boiler beroperasi karena dapat mempengaruhi kestabilan dan keandalan operasi boiler. Oleh karena itu, data simulasi diperlukan untuk memberikan prediksi perubahan setting sudut tilt burner, tilt dan yaw SOFA terhadap kondisi pembakaran pada boiler, khususnya rear pass temperature dan NOx content. Variasi yang digunakan adalah variasi sudut tilting burner +30⁰, +15⁰, 0⁰, -15⁰, dan -30⁰ dan variasi sudut tilting dan yawing SOFA -15⁰, -8⁰, 0⁰, +8⁰, +15⁰. Metode GA (Genetic Algorithm) digunakan untuk menentukan seting optimal terhadap respon rear pass temperature dan NOx content. Studi numerik menggunakan software CFD dilakukan terhadap seting optimal yang didapat untuk dapat melihat distribusi temperature dan NOx content pada kondisi optimal. Penelitian mendapatkan hasil uji ANOVA pada ketiga faktor dua faktor yaitu sudut tilt burner, sudut tilt SOFA signifikan berpengaruh terhadap respon dan satu faktor yaitu yaw SOFA tidak signifikan berpengaruh. Variasi sudut yang menghasilkan deviasi rear pass yang optimal adalah sudut tilt burner +11⁰, sudut tilt SOFA -15⁰ dan yaw SOFA 2⁰. Variasi sudut tersebut menghasilkan rear pass temperature sisi A sebesar 821,33 ⁰K dan sisi B 816,27 ⁰K sehingga deviasi nya menjadi kecil 5,06 ⁰K jika dibandingkan dengan kondisi eksisting menghasilkan rear pass temperature sisi A sebesar 781,32 ⁰K dan sisi B 767,83 ⁰K sehingga deviasi nya menjadi kecil 13,49 ⁰K
=====================================================================================================================================
PLTU Banten 1 Suralaya is a power plant with a tangentially fired pulverized coal boiler type designed using 3900 - 4500 kcal / kg LHV coal. The boiler of PLTU Banten 1 Suralaya is equipped with a tilting burner, tilting and yawing SOFA (Separated Over Fire Air) facilities where the facility allows the burner to be directed up or down to form a certain angle to the horizontal line. The tilting burner angle controls the combustion's vertical position and the flame's size to produce a uniform temperature distribution to all boiler tubes. In comparison, the rise of the tilting and yawing sofa can be adjusted vertically or horizontally with the same angle. The vertical setting will affect the NO x controller, while the horizontal environment will affect the CO level controller. Setting horizontally can also help reduce the imbalance of O2 at the outlet. However, putting the tilt burner, tilt and yaw SOFA settings is difficult to do directly when the boiler is operating because it can affect the stability and reliability of boiler operation. Therefore, simulation data is needed to predict changes in tilt burner, tilt and yaw SOFA angle settings to combustion conditions in boilers, especially rear pass temperature and NOx content. The variations used are variations in tilting burner angles +30⁰, +15⁰, 0⁰, -15⁰, and -30⁰ and variations in tilting and yawing angle SOFA -15⁰, -8⁰, 0⁰, +8⁰, +15⁰. The GA (Genetic Algorithm) method determines the optimal setting for the rear pass temperature response and NOx content. Numerical data using CFD software is obtained against the optimal settings to see the temperature and NOx content distribution under optimal conditions. The study obtained the results of the ANOVA test on three two-factor factors: the tilt burner angle and the SOFA tilt angle significantly affect the response and one aspect. Namely, the SOFA yaw does not significantly affect it. The angle that produces the optimal rear pass deviation is the tilt burner angle +11⁰, the SOFA tilt angle -15⁰ and the SOFA 2⁰ yaw. The angular variation resulted in a rear pass temperature of side A of 821.33 ⁰K and side B of 816.27 ⁰K so that the deviation became small, 5.06 ⁰K when compared to existing conditions resulting in a rear pass temperature of side A of 781.32 ⁰K and side B of 767.83 ⁰K so that the deviation became small 13.49 ⁰K
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | tilt burner, tilt SOFA, yaw SOFA, rear pass temperature, NOx content, pola pembakaran, CFD, GA ========================================================================================================================tilt burner, tilt SOFA, yaw SOFA, rear pass temperature, NOx content, burning pattern, CFD, GA |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ263.5 Boilers (general) |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21101-(S2) Master Thesis |
| Depositing User: | Alam Tri Yudha |
| Date Deposited: | 17 Feb 2023 07:28 |
| Last Modified: | 17 Feb 2023 07:28 |
| URI: | http://repository.its.ac.id/id/eprint/97552 |
Actions (login required)
 |
View Item |