Experimental study of the influence of the operating variables on natural gas reburning efficiency

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie00039a047· OSTI ID:183102

Bilbao, R; Alzueta, M U; Millera, A ^[1]

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1. Univ. of Zaragoza (Spain). Dept. of Chemical and Environmental Engineering

The process of reburning with natural gas has been demonstrated to be an attractive technique that can be applied to reduce the NO{sub x} emissions in coal combustion systems. The influence of the main operating conditions in the reburning zone using natural gas on the NO, HCN, and NH{sub 3} concentrations obtained at the exit of this zone has been analyzed. Experiments with a wider range of variable values than those presented in the literature have been performed. The variables analyzed have been the temperature (1,200--1,500 C), the natural gas concentration (1--4.5%) or reburning fuel fraction (0.08--0.50), the oxygen concentration at the inlet of the reburning zone (0--5%), the stoichiometric ratio in the reburning zone (0.75--1.05), the primary NO concentration (100--1,200 ppm), and the gas residence time (94--280 ms).

• Sponsoring Organization: USDOE
• OSTI ID: 183102
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 12 Vol. 34; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
03 NATURAL GAS
AIR POLLUTION ABATEMENT
AMMONIA
COAL
COCOMBUSTION
COMBUSTION PRODUCTS
FLUE GAS
GAS ANALYSIS
HYDROCYANIC ACID
NATURAL GAS
NITRIC OXIDE
NITROGEN OXIDES
PARAMETRIC ANALYSIS
STAGED COMBUSTION