Improvements in the performance of a medium-pressure-boiler through the adjustment of inlet fuels in a refinery plant

Chien li Lee, Chih Ju G. Jou, Cheng Hsien Tsai, Hong-Paul Wang

Research output: Contribution to journalReview article

8 Citations (Scopus)

Abstract

Hydrogen has been considered as a promising alternative for fossil fuel in recent years because it is very "clean". Fossil fuel generates CO 2 , CO, SO x , unburned hydrocarbon and particles during combustion, while hydrogen only yields NO x . In this study, a medium-pressure boiler with 130 ton/h boiler loading in a full-scale plant was studied with two inlet hydrogen-rich refinery gas (RG)/fuel oil (FO) volumetric flow rate ratios (inlet RG/FO ratio) and two residual O 2 concentration (vol.%) in flue gases (2%, 4%) to evaluate their influence on the emissions of NO x and CO 2 , flue gas temperatures and boiler efficiencies. The result shows significant improvements in both boiler efficiencies and emissions of air pollutants. By increasing the inlet RG/FO ratio from 1:5 to 1:1.5, the fuel cost was reduced by 11%, NO x emission down by 12%, and the CO 2 emission 20,200 ton lower per year was achieved. Thus, better economic operating conditions for the boiler are suggested at inlet RG/FO ratio = 1:1.5 with the residual O 2 concentration in flue gases = 2%.

Original languageEnglish
Pages (from-to)625-631
Number of pages7
JournalFuel
Volume86
Issue number5-6
DOIs
Publication statusPublished - 2007 Mar 1

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Fuel Oils
Gas fuels
Boilers
Fuel oils
Carbon Monoxide
Flue gases
Hydrogen
Fossil fuels
Air Pollutants
Hydrocarbons
Flow rate
Economics
Air
Costs
Temperature

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Lee, Chien li ; Jou, Chih Ju G. ; Tsai, Cheng Hsien ; Wang, Hong-Paul. / Improvements in the performance of a medium-pressure-boiler through the adjustment of inlet fuels in a refinery plant. In: Fuel. 2007 ; Vol. 86, No. 5-6. pp. 625-631.
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abstract = "Hydrogen has been considered as a promising alternative for fossil fuel in recent years because it is very {"}clean{"}. Fossil fuel generates CO 2 , CO, SO x , unburned hydrocarbon and particles during combustion, while hydrogen only yields NO x . In this study, a medium-pressure boiler with 130 ton/h boiler loading in a full-scale plant was studied with two inlet hydrogen-rich refinery gas (RG)/fuel oil (FO) volumetric flow rate ratios (inlet RG/FO ratio) and two residual O 2 concentration (vol.{\%}) in flue gases (2{\%}, 4{\%}) to evaluate their influence on the emissions of NO x and CO 2 , flue gas temperatures and boiler efficiencies. The result shows significant improvements in both boiler efficiencies and emissions of air pollutants. By increasing the inlet RG/FO ratio from 1:5 to 1:1.5, the fuel cost was reduced by 11{\%}, NO x emission down by 12{\%}, and the CO 2 emission 20,200 ton lower per year was achieved. Thus, better economic operating conditions for the boiler are suggested at inlet RG/FO ratio = 1:1.5 with the residual O 2 concentration in flue gases = 2{\%}.",
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Improvements in the performance of a medium-pressure-boiler through the adjustment of inlet fuels in a refinery plant. / Lee, Chien li; Jou, Chih Ju G.; Tsai, Cheng Hsien; Wang, Hong-Paul.

In: Fuel, Vol. 86, No. 5-6, 01.03.2007, p. 625-631.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Improvements in the performance of a medium-pressure-boiler through the adjustment of inlet fuels in a refinery plant

AU - Lee, Chien li

AU - Jou, Chih Ju G.

AU - Tsai, Cheng Hsien

AU - Wang, Hong-Paul

PY - 2007/3/1

Y1 - 2007/3/1

N2 - Hydrogen has been considered as a promising alternative for fossil fuel in recent years because it is very "clean". Fossil fuel generates CO 2 , CO, SO x , unburned hydrocarbon and particles during combustion, while hydrogen only yields NO x . In this study, a medium-pressure boiler with 130 ton/h boiler loading in a full-scale plant was studied with two inlet hydrogen-rich refinery gas (RG)/fuel oil (FO) volumetric flow rate ratios (inlet RG/FO ratio) and two residual O 2 concentration (vol.%) in flue gases (2%, 4%) to evaluate their influence on the emissions of NO x and CO 2 , flue gas temperatures and boiler efficiencies. The result shows significant improvements in both boiler efficiencies and emissions of air pollutants. By increasing the inlet RG/FO ratio from 1:5 to 1:1.5, the fuel cost was reduced by 11%, NO x emission down by 12%, and the CO 2 emission 20,200 ton lower per year was achieved. Thus, better economic operating conditions for the boiler are suggested at inlet RG/FO ratio = 1:1.5 with the residual O 2 concentration in flue gases = 2%.

AB - Hydrogen has been considered as a promising alternative for fossil fuel in recent years because it is very "clean". Fossil fuel generates CO 2 , CO, SO x , unburned hydrocarbon and particles during combustion, while hydrogen only yields NO x . In this study, a medium-pressure boiler with 130 ton/h boiler loading in a full-scale plant was studied with two inlet hydrogen-rich refinery gas (RG)/fuel oil (FO) volumetric flow rate ratios (inlet RG/FO ratio) and two residual O 2 concentration (vol.%) in flue gases (2%, 4%) to evaluate their influence on the emissions of NO x and CO 2 , flue gas temperatures and boiler efficiencies. The result shows significant improvements in both boiler efficiencies and emissions of air pollutants. By increasing the inlet RG/FO ratio from 1:5 to 1:1.5, the fuel cost was reduced by 11%, NO x emission down by 12%, and the CO 2 emission 20,200 ton lower per year was achieved. Thus, better economic operating conditions for the boiler are suggested at inlet RG/FO ratio = 1:1.5 with the residual O 2 concentration in flue gases = 2%.

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