Development of a novel 2-stage entrained flow coal dry powder gasifier

Xu, Shisen; Ren, Yanwei; Wang, Baomin; Xu, Yang; Liang, Chen; Wang, Xiaolong; Xiao, Tiancun

doi:10.1016/j.apenergy.2013.07.045

Cited by 60 publications

(31 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most gasification processes typically produce syngases that are CO-rich or H 2 -rich depending on feedstock. CO-rich syngas has been produced by coal gasification with blends comprising 60% CO and 30% H 2 by volume [6]. The relative molar fraction of H 2 to CO for coal-derived syngas ranges from 0.4 to 1.0 [7].…”

Section: Introductionmentioning

confidence: 99%

H2-rich syngas strategy to reduce NOx and CO emissions and improve stability limits under premixed swirl combustion mode

Samiran

Jaafar

et al. 2016

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

The combustion performance of H 2-rich model syngas was investigated by using a premixed swirl flame combustor. Syngas consisting mainly of H 2 and CO was blended with components such as CH 4 and CO 2 in a mixing chamber prior to combustion at atmospheric condition. The global flame appearance and emissions performance were examined for high (H 2 /CO = 3) and moderate (H 2 /CO = 1.2) H 2-rich syngases. Results showed that higher H 2 fractions in the syngases produce lower NO x emissions per kWh basis across all equivalence ratios tested. CO emissions are equivalence ratio dependent and are less affected by the H 2 fraction in the syngas. Increasing CO 2 diluent ratios result in the decrease of NO x , particularly for moderate H 2-rich syngases. In contrast, syngas without CO shows an increase of NO x with increasing CO 2 for fuel-lean mixtures. Addition of CO 2 increases the lean blowout limit of all syngases. Higher fraction of H 2 produces lower lean blowout limits due to the characteristics of high diffusivity of hydrogen molecules and high flame speed that assist in the stabilisation of the flame under flame-lean conditions. The range of blowout limits for moderate and high H 2-rich and pure hydrogen syngases under diluent ratios up to 25% were within the range of φ = 0.12-0.15.

show abstract

Section: Introductionmentioning

confidence: 99%

H2-rich syngas strategy to reduce NOx and CO emissions and improve stability limits under premixed swirl combustion mode

Samiran

Jaafar

et al. 2016

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

show abstract

“…Three dimensional simulations of the HNCERI gasifier are performed with ANSYS Fluent [23] on a computational mesh consisting of about 0.5 million hexahedral cells (see Figure 1(b)) with realizable k-epsilon turbulence model, unreacted-core shrinking heterogeneous reaction model, and finite rate/eddy dissipation gas phase reaction model, augmented with discrete phase method for coal particle tracking [5]. The coal used in industrial operation is Shenhua coal and its industrial analysis is listed Table 1.…”

Section: Three Dimensional Cfd Simulationmentioning

confidence: 99%

“…In this work, a combined CFD-ROM approach is employed to investigate the flow and gasification characteristics of the HNCERI two-stage entrained flow gasifier [5], which, as illustrated in Figure 1(b), is a dry-feed, oxygen-blown slagging gasification system.…”

Section: Introductionmentioning

confidence: 99%

“…In IGCC, one of the central processes is coal gasification that converts coal, steam and oxygen to syngas under pressure upon heating. Currently, the entrained flow coal gasification has being developed in various locations around the world, while the oxygen blown entrained gasifier has reached demonstration scale in the IGCC process developed in the USA, the EU countries, and China [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical analysis of gasification and emission characteristics of a two-stage entrained flow gasifier

Zhang

Ren

Shi

et al. 2016

Chemical Engineering Science

View full text Add to dashboard Cite

“…Coal gasification is the key technology for power generation and coal chemical process [1]. It offers one of the most versatile and cleanest ways to convert coal into electricity, energy, hydrogen, and other chemical products [2,3].…”

Section: Introductionmentioning

confidence: 99%

Understanding mineral behaviors during anthracite fluidized-bed gasification based on slag characteristics

Huang

et al. 2014

Applied Energy

View full text Add to dashboard Cite

Development of a novel 2-stage entrained flow coal dry powder gasifier

Cited by 60 publications

References 28 publications

H2-rich syngas strategy to reduce NOx and CO emissions and improve stability limits under premixed swirl combustion mode

H2-rich syngas strategy to reduce NOx and CO emissions and improve stability limits under premixed swirl combustion mode

Numerical analysis of gasification and emission characteristics of a two-stage entrained flow gasifier

Understanding mineral behaviors during anthracite fluidized-bed gasification based on slag characteristics

Contact Info

Product

Resources

About