Studi Numerik Pengaruh Sudut Tilt dan Yaw SOFA terhadap Rear Pass Temperature Boiler & NOx Content Pada Tangentially Fired Pulverized Coal Boiler 625 MW Pada Sudut Tilt Burner Positif

Hakim, Wildanul (2023) Studi Numerik Pengaruh Sudut Tilt dan Yaw SOFA terhadap Rear Pass Temperature Boiler & NOx Content Pada Tangentially Fired Pulverized Coal Boiler 625 MW Pada Sudut Tilt Burner Positif. Masters thesis, Institut Teknologi Sepuluh November.

Text 6007201026-Master_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2025. Download (8MB) | Request a copy

Abstract

PLTU Banten 1 Suralaya yang memiliki kapasitas 625MW menggunakan jenis boiler boiler PC (pulverized coal) tipe sub-critical pressure once middle reheat controlled circulation drum boilers four-corner tangential burner balanced draft. Pada boiler ini terjadi deviasi temperature rear pass boiler yang mengganggu kehandalan unit karena bisa mengakibatkan overheating pada pipa boiler dan emisi NOx yang cukup tinggi yang perlu menjadi perhatian dikarenakan telah ditetapkannya baku mutu emisi NOx untuk industry termasuk untuk PLTU batubara, dimana risiko jika tidak memenuhi standar baku mutu ini adalah larangan untuk beroperasi. Penelitian ini dilakukan dengan simulasi numerik menggunakan CFD (Computational Fluid Dynamics) dengan melakukan pengaturan pada sudut tilting burner dan sudut bukaan Separated Over Fire-Air (SOFA) baik itu untuk sudut tilting dan sudut yawing. Respon yang akan diperhatikan adalah deviasi boiler rear pass temperature dan emisi NOx. Sudut pengaturan tilting burner dilakukan pada sudut positif (0̊, +15̊, +30̊ ) dan untuk sudut tilting dan sudut yawing SOFA pada semua sudut (-30̊, -15̊, 0̊, 15̊, 30̊). Dari penelitian diambil kesimpulan bahwa sudut tilting burner positif dan sudut tilting SOFA berpengaruh terhadap deviasi rear pass temperature boiler pada kondisi batubara LRC. Sementara sudut yawing SOFA tidak berpengaruh terhadap deviasi rear pass temperature boiler pada kondisi batubara LRC. Nilai deviasi rear pass temperature terendah didapat pada variasi sudut tilt burner 30o, sudut tilt SOFA -8o dan sudut yaw SOFA -8o yaitu sebesar 5,11 K. Sudut tilting burner positif, sudut tilting SOFA dan sudut yawing SOFA tidak berpengaruh terhadap nilai emisi NOx yang dihasilkan oleh boiler pada kondisi batubara LRC.
================================================================================================================================
The PC boiler (pulverized coal) type sub-critical pressure once middle reheat controlled circulation drum boilers four-corner tangential burner balanced draft is used at PLTU Banten 1 Suralaya, which has a 625MW capacity. Due to the establishment of NOx emission quality standards for the industry, including coal-fired power plants, where the risk of it not meeting these quality standards is that it will be prohibited from operating, this boiler's rear pass boiler temperature deviation affects the reliability of the unit because it can lead to overheating of the boiler pipe and high NOx emissions. The Separated Over Fire-Air (SOFA) opening angle and the tilting burner angle were both adjusted for the purposes of this research utilizing numerical simulation using CFD (Computational Fluid Dynamics). The deviation in boiler rear pass temperature and NOx emission will be taken into consideration as a response. The tilting burner is adjusted at a positive angle (0o, +15o, +30o), while the SOFA's tilting and yawing angles are adjusted at all angles (-30o, -15o, 0o, 15o, 30o). It was found from the investigation that the positive tilting burner angle and SOFA tilting angle had a substantial impact on the deviation of the boiler's rear pass temperature under LRC coal conditions. The deviation of the boiler's rear pass temperature in the condition of the LRC coal, however, is not significantly impacted by the SOFA yawing angle. The tilt burner angle of 30o, the SOFA tilt angle of -8o, and the corner yaw SOFA -8o variation yield the lowest rear pass temperature deviation value, which is 5.11 K. Under LRC coal conditions, the positive tilting burner angle, SOFA tilting angle, and SOFA yawing angle have no impact on the boiler's NOx emission value.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	LHV, Tilting Burner, Tilting SOFA, Yawing SOFA, Boiler Rear Pass Temperature, emisi NOx
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:	Wildanul Hakim
Date Deposited:	10 Jul 2023 01:41
Last Modified:	10 Jul 2023 01:41
URI:	http://repository.its.ac.id/id/eprint/98385

Actions (login required)

View Item