Simultaneous reduction of NOx and SO2 emissions from coal combustion by calcium magnesium acetate

Nimmo, W.; Patsias, A. A.; Hampartsoumian, E.; Gibbs, B.M.; Williams, Paul T.

doi:10.1016/s0016-2361(03)00257-6

Cited by 56 publications

(32 citation statements)

References 14 publications

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“…Particularly using organic calcium compound (OCC) as an additive is an alternative method to simultaneously remove these pollutants (Niu et al, 2011). Currently, extensive experiments in test rigs and power plants have been made to investigate the combustion behavior of OCC and coal (Nimmo et al, 2004;Patsias et al, 2005;Shemwell et al, 2000;Tayyeb Javed et al, 2009). Until now, our knowledge of using OCC as an additive for biomass or sewage sludge combustion to dual remove SO 2 /NOx is still deficient.…”

Section: Introductionmentioning

confidence: 99%

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Effect of organic calcium compounds on combustion characteristics of rice husk, sewage sludge, and bituminous coal: Thermogravimetric investigation

Zhang

Duan

Huang

2015

Bioresource Technology

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Section: Introductionmentioning

confidence: 99%

“…Many studies had found that the calcined CMA has the greater SO 2 removal rate at lower temperatures than conventional SO 2 absorbent (Nimmo et al, 2004;Patsias et al, 2005). Meanwhile, CP has more volatile matter and combustible content compared to other OCCs (Niu et al, 2011); therefore, CP and CMA are used in this study.…”

Section: Introductionmentioning

confidence: 99%

Effect of organic calcium compounds on combustion characteristics of rice husk, sewage sludge, and bituminous coal: Thermogravimetric investigation

Zhang

Duan

Huang

2015

Bioresource Technology

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“…More attentions have been paid to simultaneously reduce NOx and SO 2 . The ability to simultaneously remove these pollutants using OCCs has been recognized (Atal, 1995;Cheng et al, 2004;Nimmo et al, 2004;Steciak et al, 1995). OCCs can release plenty of carboxylic and hydrocarbonyl radical during the thermal decomposition process and these intermediates can reduce NO emission under proper condition, but also have combustible characteristics.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric investigation on characteristic of biomass combustion under the effect of organic calcium compounds

Zhang¹,

Duan²,

Huang³

2015

Bioresource Technology

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“…The resulting NO x reductions observed for natural gas (CH 4 ), biomass, orimulsion, coal, CPF, and CRDF were 25% -85%. In a reburn study performed by Nimmo et al [11] using calcium magnesium acetate (CMA) as a reburn fuel NO x reductions of 80% were achieved in addition to acid gas capture by the calcium component of the additive.…”

Section: Introductionmentioning

confidence: 99%

The evaluation of waste tyre pulverised fuel for NOx reduction by reburning

Nimmo¹,

Singh²,

Gibbs³

et al. 2008

Fuel

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The combustion of coal for power generation will continue to play a major role in the future, however, this must be achieved using cleaner technologies than we use at present. Scrap tyre arisings in the UK are 400,000 tonnes per year amounting to 30 million tyres and in the EU as a whole, more than 2.5 million tonnes of tyres per year are scrapped. The recent EC Waste Landfill Directive (1999) sets a deadline for the banning of whole and shredded tyres from landfill sites by 2006. Consequently, there is an urgent need to find a mass disposal route for tyres. We describe, in this paper, a novel use for tyre rubber pulverized fuel in a NOx reburning process which may have an application in power station boilers. This method of disposal could represent a way of combining waste disposal, energy recovery and pollution control within one process. A preliminary study of micronised tyre combustion was undertaken to identify the suitable size ranges for application in NOx reduction by reburning. Tests were performed in a down-fired, pulverised fuel combustor (PFC) operating at about 80kW. Superior combustion characteristics i.e. burnout were achieved with particle sizes less than 250 µm. A South African coal was used as the primary fuel in the reburn tests and the tyre was fed pneumatically via a separate feed system. Parameters studied, were, reburn zone stoichiometry and reburn fuel fraction. Additionally, the carbon content of the ash was carefully monitored for any effect on burnout at the fuel-rich reburn stoichiometries. The NOx reductions achieved with tyres are compared with reburning with coal. NO x reductions up to 80% were achieved with tyres at half of the reburn fuel feed rate required to achieve the same reductions by coal. The results have been evaluated within the context of other studies available in the literature on NOx reburning by bituminous coal, brown coal, gas and biomass.

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Simultaneous reduction of NOx and SO2 emissions from coal combustion by calcium magnesium acetate

Cited by 56 publications

References 14 publications

Effect of organic calcium compounds on combustion characteristics of rice husk, sewage sludge, and bituminous coal: Thermogravimetric investigation

Effect of organic calcium compounds on combustion characteristics of rice husk, sewage sludge, and bituminous coal: Thermogravimetric investigation

Thermogravimetric investigation on characteristic of biomass combustion under the effect of organic calcium compounds

The evaluation of waste tyre pulverised fuel for NOx reduction by reburning

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