Optimization of Fuel in Saturated Steam Boiler through Preheating of Controlled Air-Fuel Mixture

Ibrahim, Uzair; Farrukh, Sarah

doi:10.1109/icomet.2019.8673398

Cited by 10 publications

(5 citation statements)

References 20 publications

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“…From the table above, the boiler efficiency increased by 2.43%. This is in line with previous studies which stated that optimizing the air-tofuel ratio along with the pre-mixing of air and fuel before entering the combustion chamber can increase boiler efficiency by 4%, resulting in significant energy savings, lower operating costs, and greenhouse gas emission reduction [1].…”

Section: Resultssupporting

confidence: 92%

“…The fourth study emphasized the importance of using the appropriate coal particle size to achieve optimal combustion efficiency [5]. Lastly, the fifth study found that optimizing the coal and combustion air mixing ratio prior to entering the combustion chamber could boost boiler efficiency by 4%, resulting in reduced operating costs and air emissions [1].…”

Section: Introductionmentioning

confidence: 99%

“…A significant portion of the operating cost for any industrial process is related to fuel consumption [1]. The largest production cost component for Energy Production 1 is the raw material cost, specifically the cost of purchasing coal.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Atmospheric Fluidized Bed Combustion Boiler by Computational Fluid Dynamics

Ramadhan,

Gunawan

2023

E3S Web Conf.

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Viscose rayon is a natural fabric from regenerated cellulose derived from wood pulp, bamboo, or cotton linters. The viscose rayon industry relies on electricity to generate steam for textile production. This study aims to optimize the 45-ton-per-hour Atmospheric Fluidized Bed Combustion (AFBC) boiler. Its efficiency is 78.16%, lower than the industry benchmark of 85.78%. Boiler efficiency decreases as the flue gas temperature increases, reaching 220 degrees Celsius, indicating suboptimal coal fuel utilization for water heating. The study explores two controllable variables: coal calorific value and combustion air mass flow rate for optimum efficiency. ANSYS Fluent 2021, a Computational Fluid Dynamics (CFD) software, is used for analysis. Boiler efficiency is calculated using the indirect method following ASME PTC 4.0. The research shows that adjusting the combustion air mass flow rate and coal calorific value increases efficiency to 81.04%.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Optimization of Atmospheric Fluidized Bed Combustion Boiler by Computational Fluid Dynamics

Ramadhan,

Gunawan

2023

E3S Web Conf.

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“…Udara yang berlebih merupakan salah satu penyebab hilangnya energi pada boiler, karena dapat menurunkan suhu pembakaran, meningkatkan jumlah gas buang yang dihasilkan, dan memperbesar panas yang hilang. Oleh karena itu, optimalisasi udara berlebih dapat secara signifikan meningkatkan efisiensi boiler dan dapat menurunkan emisi gas buang (Ibrahim and Farrukh, 2019). Pada simulasi efek perbaikan konsentrasi oksigen dari 13% menjadi 8%, dihasilkan reduksi batubara dan penurunan emisi, masing-masing sebesar 5,0% dan 2.841 tCO 2 / tahun (Gambar 4).…”

Section: Perbaikan Rasio Udara Pembakaranunclassified

Studi Kasus Proyek Co-Benefit Peningkatan Efisiensi Boiler Batubara di Industri Kertas

et al. 2020

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Pertumbuhan industri yang pesat menyebabkan masalah emisi gas rumah kaca. Kegiatan co-benefit peningkatan efisiensi boiler batubara telah dilakukan di industri kertas dalam proyek “Co-benefit Indonesia Tahun 2018” dari Kementerian Lingkungan Hidup Jepang dengan tujuan melakukan identifikasi langkah-langkah yang terkait dengan konservasi energi dan penurunan polutan emisi boiler industri berbahan bakar batubara dan cara melakukannya. Identifikasi meliputi analisis efisiensi termal boiler, pengukuran kadar air batubara, pengukuran kualitas air umpan boiler, air blowdown, dan kondensat, pemeriksaan insulasi panas, pengaturan rasio udara pembakaran, dan pengendalian operasi multi boiler. Berbagai kehilangan panas dianalisis dan beberapa rekomendasi diberikan untuk implementasi di pabrik sehingga efisiensi boiler dapat ditingkatkan. Beberapa masalah yang perlu diperbaiki untuk konservasi energi meliputi penggunaan batubara dengan kadar air tinggi, rasio udara pembakaran tinggi, konduktivitas air umpan tinggi menyebabkan rasio blowdown tinggi, tidak dilakukan insulasi pada mesin produksi yang relatif tua, dan pengoperasian beberapa boiler dengan efisiensi rendah. Potensi perbaikan melalui penyesuaian kadar air batubara, perbaikan rasio udara pembakaran, optimalisasi rasio blowdown, pemulihan air kondensat, pemasangan insulasi, dan kontrol multi boiler secara teori menghasilkan reduksi konsumsi batubara 16.445 ton/tahun atau 48,63%, dan reduksi CO2 sebesar 19.589 tCO2/tahun dengan estimasi penghematan biaya Rp 12 milyar/tahun. Kata kunci: co-benefit, industri kertas, boiler, batubara, emisi.Case Study of Co-Benefit Project Improvement of Coal Boiler Efficiency in The Paper IndustryABSTRACT Industrial rapid growth has caused greenhouse gas emissions problems. Co-benefit activities to improve the efficiency of coal boilers have been carried out in paper industry in the project of “Co-benefit Indonesia FY 2018” from the Japan Ministry of Environment aimed at identifying required steps to save energy and reduction of pollutant emission from the coal-fired industrial boilers and how to achieve it. Identification include analysis of boiler thermal efficiency, coal moisture content measurement, boiler feed water, blowdown water and condensate quality measurement, heat insulation examination, combustion air ratio management, and control of multiple boiler operations. Various heat losses have been analyzed and some recommendations have been proposed to be implemented by factory management to improve boiler efficiency. There are several issues that need to be addressed for energy conservation, namely: high water content coal utilization, high combustion air ratio, high conductivity feed water which causes high blowdown ratios, no insulation on relatively old production machines, and operational of several low efficiency boilers. The results of the co-benefit identification indicated that the potential for corrective action by adjusting the coal water content, improving the combustion air ratio, optimizing the blowdown ratio, recovering condensate water, installing insulation, and controlling multiple boilers theoretically can result coal consumption reduction of 16,445 tons/year or 48.63%, and CO2 reduction of 19,589 tCO2/year with an estimated cost savings of Rp 12 billion/year.

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“…Ibrahim and Farrukh [17] studied the air to air with premixing the fuel and the air before there introduced to the furnace. The background of the study is the previous founding that any improvement in fuel consumption leads to the remarkable reduction of carbon monoxide emission and improves boiler efficiency.…”

Section: Figure 2: Fuzzy Logic Control (Left) and Proportional Integral Control (Right)mentioning

confidence: 99%

Review of Stoichiometric Technique for Better Performance of the Boiler

Ndizihiwe

Mkandawire

Venant

2020

IJASRE

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The combustion within the boiler burns fuel to create heat energy which then produces electrical power. The combustion of fuel is its reaction with oxygen available in the air. The amount of fuel that can be well burnt is limited by the quantity of oxygen. Once all the fuel is not burnt at all, some of it stays in the boiler and other quantity goes to the atmosphere. Most of the fuels used in the boiler are hydrocarbons which release hydrogen and carbon as residuals. It causes small efficiency and degradation of the air. It is needed to take the faction of air/fuel to the optimum value to reduce these problems. This paper provides different reviewed algorithms that control the combustion within the boiler and the role of environmental temperature. The author found that the separation of the oxygen from the air combined with the preheating both fuel and oxygen taking into account environmental temperature would provide better stoichiometric values, which improve the performance.

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Optimization of Fuel in Saturated Steam Boiler through Preheating of Controlled Air-Fuel Mixture

Cited by 10 publications

References 20 publications

Optimization of Atmospheric Fluidized Bed Combustion Boiler by Computational Fluid Dynamics

Optimization of Atmospheric Fluidized Bed Combustion Boiler by Computational Fluid Dynamics

Studi Kasus Proyek Co-Benefit Peningkatan Efisiensi Boiler Batubara di Industri Kertas

Review of Stoichiometric Technique for Better Performance of the Boiler

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