Scrupulous analysis of the carbon footprint of sustainable electricity produced from raw bagasse, torrefied bagasse, and filter cake pellets in Thailand

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2024-10-31 DOI:10.1016/j.psep.2024.10.091

Kaittisak Pajampa , Amnart Suksri , Kanit Manatura , Pattarabordee Khaigunha , Tanakorn Wongwuttanasatian

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Abstract

This study evaluates the carbon footprint of a 25 MW biomass power plant in a sugar factory, focusing on its 8 MW grid supply. Six key activities were assessed: fuel preparation, combustion, power generation, particulate removal, and water production (soft and cooling). The research compares greenhouse gas (GHG) emission from three scenarios: 100 % raw bagasse (RB), RB mixed with torrefied bagasse (TB), and RB with filter cake pellets (FP) at ratios of 95:5, 97:3, and 99:1. Data collected throughout 2023 revealed that the plant consumed 119,769.89 tons of RB (51 % moisture, 7740.40 kJ/kg heating value), generating 31,552,711.00 kWh annually. Emissions were calculated in kg CO₂eq/kWh using the 2006 IPCC Guideline (The Intergovernmental Panel on Climate Change). Results showed that 100 % RB emitted (0.184+0.006, −0.005) kg CO2eq/kWh. Incorporating TB reduced emissions to 5 % = (0.178±0.005), 3 % = (0.178+0.006, −0.005) and 1 % = (0.178+0.006, −0.005) kg CO₂eq/kWh due to decreased diesel oil, electricity, and steam usage in fuel preparation. Remarkably, using FP further decreased emissions, with 5 % FP resulting in negative total GHG emissions of (-0.225+0.015, −0.017) kg CO2eq/kWh, primarily due to the FP preparation process (-15,096,234.40±56,716.07 kg CO2eq/year). The study concludes that combining RB with TB or FP significantly reduces emissions and increases electricity production 5 % torrefied bagasse decreased 0.30 %, 3 % torrefied bagasse decreased 1.34 % and 1 % torrefied bagasse decreased 2.41 %, 5 % pelletized filter cake decreased 229.95 %, 3 % pelletized filter cake decreased 139.77 % and 1 % pelletized filter cake decreased 48.77 % by compare raw bagasse 100 %, promoting sustainable energy generation. These findings encourage the use of biomass for sustainable and environmentally advantageous power production.

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对泰国利用蔗渣原料、焙烧蔗渣和滤饼颗粒生产的可持续电力的碳足迹进行细致分析

本研究评估了一家糖厂 25 兆瓦生物质发电厂的碳足迹，重点是其 8 兆瓦的电网供电。对六项关键活动进行了评估：燃料制备、燃烧、发电、微粒清除和制水（软水和冷却水）。研究比较了三种方案的温室气体（GHG）排放量：100%的生蔗渣（RB）、RB 与托瑞蔗渣（TB）混合、RB 与滤饼颗粒（FP）混合，比例分别为 95:5、97:3 和 99:1。2023 年收集的数据显示，该工厂每年消耗 119,769.89 吨 RB（水分 51%，热值 7740.40 kJ/kg），发电量 31,552,711.00 kWh。根据 2006 年 IPCC 准则（政府间气候变化专门委员会），以千克 CO2eq/kWh 为单位计算排放量。结果显示，100% RB 排放 (0.184+0.006, -0.005) 千克 CO2eq/千瓦时。由于在燃料制备过程中减少了柴油、电力和蒸汽的使用量，加入 TB 后，排放量分别降至 5 % = (0.178±0.005)、3 % = (0.178+0.006, -0.005) 和 1 % = (0.178+0.006, -0.005)千克 CO2eq/千瓦时。值得注意的是，使用替代燃料进一步减少了排放量，5% 的替代燃料导致温室气体总排放量为负值 (-0.225+0.015, -0.017) kg CO2eq/kWh，这主要是由于替代燃料的制备过程（-15,096,234.40±56,716.07 kg CO2eq/年）。研究得出结论，将 RB 与 TB 或 FP 结合使用可显著减少排放并提高发电量，与原料蔗渣 100%相比，5% 托料蔗渣减少了 0.30%，3% 托料蔗渣减少了 1.34%，1% 托料蔗渣减少了 2.41%，5% 粒化滤饼减少了 229.95%，3% 粒化滤饼减少了 139.77%，1% 粒化滤饼减少了 48.77%，促进了可持续能源生产。这些研究结果鼓励使用生物质进行可持续的、对环境有利的发电。

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来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.