Energy savings and emission reduction of traditional pollutants, particulate matter, and polycyclic aromatic hydrocarbon using solvent-containing water emulsified heavy fuel oil in boilers

Sheng Lun Lin, Wen Jhy Lee, Shun Shiang Chang, Chia Fon Lee, Lien Fwu Lee, Chiao Shang Lin, Haiti Loong

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

Heavy fuel oil is one of the most commonly used petroleum fuels in boilers, although it is associated with a high level of pollutants. Emulsification is a developing technique to enhance fuel efficiency and reduce regulated pollution emissions. In the current study, the water phase of emulsified heavy oil contained 1 vol % methanol, 4 vol % isopropyl alcohol (IPA), and 95 vol % water, representing actual industrial solvent-containing wastewater (SCW). The SCW fractions in emulsified fuel were optimized by thermal, centrifugal, and 14-day standing stability tests. The emulsion M1P4-10 with 10 vol % SCW showed no separation and contained the smallest and most homogeneous water-in-oil (W/O) droplets after stability tests. Four boilers, including three with 3.6 and one with 10 ton h-1 steam capacities, were employed to be operated for 30 h with a regular heavy fuel oil and M1P4-10. The microexplosion and tinder effects of solvent contents improved boiler efficiency by 10-33% and reduced fuel consumption by 5-31% using M1P4-10. The emulsion also reduced SO x by 3.3-7.1%, particulate matter (PM) by 41-85%, CO by 89-93%, HC by 91-60%, and NOx by 3.3-23%. With regard to inhibiting toxic air pollutants, the emission levels of total polycyclic aromatic hydrocarbons (PAHs) and total benzo[a]pyrene (BaPeq) were reduced by 37.7 and 61.8%, respectively using M1P4-10. The PM and NOx trade-off problem could be solved by lower temperature combustion of M1P4-10. Consequently, the solvent-containing wastewater emulsified heavy fuel oil could effectively promote boiler efficiency and reduce the pollutant emissions in a specific emulsifying ratio.

原文English
頁(從 - 到)1537-1546
頁數10
期刊Energy and Fuels
25
發行號4
DOIs
出版狀態Published - 2011 4月 21

All Science Journal Classification (ASJC) codes

  • 一般化學工程
  • 燃料技術
  • 能源工程與電力技術

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