Sulphur Reduction Studies in UK Coals

Abstract. Three upland Lake District Tarns, Scoat, Greendale and Burnmoor, have been evaluated using MAGIC (Model of Acidification of Groundwater In Catchments) to reconstruct past, present and future chemical behaviour. The modelled historical changes in acidity are compared with palaeoecological estimation of pH to demonstrate model validity. Chemistry as simulated for all anions and cations and two of the three lakes are shown to have undergone significant acidification. The effects of changing atmospheric pollution levels on lake chemistry is evaluated and 80-90% sulphur reduction levels are required to achieve zero alkalinity. The impacts of increased nitrogen deposition are assessed and are shown to further delay reversibility.

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The costs and benefits of sulphur reduction measures: Sulphur scrubbers versus marine gas oil

Transportation Research Part D Transport and Environment ◽

10.1016/j.trd.2013.12.005 ◽

2014 ◽

Vol 28 ◽

pp. 19-27 ◽

Cited By ~ 109

Author(s):

Liping Jiang ◽

Jacob Kronbak ◽

Leise Pil Christensen

Keyword(s):

Gas Oil ◽

Costs And Benefits ◽

Sulphur Reduction

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Membrane separation for sulphur reduction

Membrane Technology ◽

10.1016/s0958-2118(02)01022-4 ◽

2002 ◽

Vol 2002 (10) ◽

pp. 11 ◽

Cited By ~ 5

Keyword(s):

Membrane Separation ◽

Sulphur Reduction

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Sulphur reduction in fluid catalytic cracking using a kaolin in situ crystallization catalyst modified with vanadium

Clay Minerals ◽

10.1180/claymin.2009.044.3.281 ◽

2009 ◽

Vol 44 (3) ◽

pp. 281-288 ◽

Cited By ~ 2

Author(s):

Ya-Li Dai ◽

Shu-Qin Zheng ◽

Dong Qian

Keyword(s):

Catalytic Cracking ◽

Comprehensive Evaluation ◽

Catalyst Activity ◽

Reduction Rate ◽

Liquid Product ◽

Fluid Catalytic Cracking ◽

Lewis Acidity ◽

Sulphur Reduction ◽

In Situ Crystallization

AbstractSulphur reduction catalysts represent a viable option for S reduction in the fluid catalytic cracking (FCC) process. In this paper, a kaolin in situ crystallization catalyst was modified with vanadium and evaluated in a fixed fluid bed (FFB) reactor. The relation between the acidity of the catalyst, the S reduction rate and the catalyst activity is discussed. The results show that increasing weak Lewis acid acidity favours S reduction in the FCC process. Increasing the V content enhances the weak Lewis acidity, so causing the S reduction rate to increase. The kaolin in situ crystallization catalyst modified with 0.6 wt.% of V leads to a 34.5% reduction in the S content of the liquid product. Comprehensive evaluation of the FFB results and the S reduction ability indicates that the catalyst modified with 0.45 wt.% V provided the best performance.

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