Self-sustaining smouldering combustion of waste: A review on applications, key parameters and potential resource recovery

Wyn, Hons K.; Konarova, Muxina; Beltramini, Jorge N.; Perkins, Greg; Yermán, Luis

doi:10.1016/j.fuproc.2020.106425

Cited by 68 publications

(49 citation statements)

References 164 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under the condition of a known coal seam dip, according to fitting Eq (6), the strip width required by the seam pressure relief protection in the strike direction can be obtained. From the obtained strip width, the pressure relief angle can be obtained according to fitting Eqs (7) and (8), that is, the strip position corresponding to the protected seam can be inverted in the strike direction.…”

Section: Plos Onementioning

confidence: 99%

“…Because coal is an important energy source [1][2][3][4][5][6][7][8], research on the safety of coal production has become more detailed [9][10][11][12][13][14][15]. The development law of mining fractures of overlying strata and the traditional "three zones" theory is the basis for the research of first mining the underside coal seam mining to protect the coal group [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The pressure relief protection effect of different strip widths, dip angles and pillar widths of an underside protective seam

et al. 2021

View full text Add to dashboard Cite

To design underside protective seam strip layout. Similarity model experiments, numerical simulations and theoretical calculations are used to quantitatively study the pressure relief protection effect of different strip widths, dip angles and coal pillar widths of a thin underside protective seam under deeply buried conditions. The optimal strip width range is obtained according to the change law of strain during the mining process of the underside protective seam in a similar model experiment. The change law of the expansion of the protected coal seam is obtained and the fitting surfaces among the dip angle and strip width of the coal seam with the protection distance and pressure relief angle along the strike and dip of the protected coal seam are established according to the numerical simulation results of underside protective seam mining. It is concluded that the best pressure relief effect can be achieved when the dip angle is 16.7° and the strip width is 70 m. According to the stability threshold of coal pillars considered in strip mining theory, the coal pillar width is calculated to be 50 m. Similarity model experiments and numerical simulations of protected coal seam mining verify the pressure relief effect of the designed protective seam strip width and pillar width. A calculation method of the protective seam strip width, position and pillar width required by the specific width of the protected seam is proposed.

show abstract

Section: Plos Onementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The pressure relief protection effect of different strip widths, dip angles and pillar widths of an underside protective seam

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The separation between the zones represented on Figure 2 are indicative to explain the main type of reactions that take place inside the reactor. A more detailed explanation of the different zones, as well as chemical reactions occurring in the reactor, is available in a review by Wyn et al [19].…”

Section: Gas Production From Smouldering Processesmentioning

confidence: 99%

“…Gas products and emission from processes involving smouldering combustion are affected by many products. These are summarised here and are reviewed in detail in [19].…”

Section: Gas Production From Smouldering Processesmentioning

confidence: 99%

“…A comprehensive review of the production of valuable gases from smouldering processes can be found in [19]. That review showed that, while more systematic approaches are required, smouldering gas products can be partially controlled with operative conditions such as air ux, moisture content, and some feed characteristics.…”

Section: Gas Production From Smouldering Processesmentioning

confidence: 99%

See 1 more Smart Citation

Fuel Gas Production From Self-Sustaining Smouldering Combustion of Lignocellulosic Waste

Wyn¹,

Konarova²,

Perkins³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Smouldering combustion has shown to be an effective application for soil remediation and as a waste treatment method for solids with high moisture content. The experimental set-up of smouldering combustion reactors is similar to autothermal fixed-bed gasification, updraft reactor configuration. In this study, smouldering experiments were conducted using lignocellulosic agricultural waste. The moisture content of lignocellulosic biomass was varied between 10 % to 50 %. Air flux was varied between 1.8 and 7.4 cm/s. Experiments were also conducted with varying oxygen concentration in the airflow (3.6 – 21 %), addition of sand (4 and 8 g/g) and other lignocellulosic material (wood pellets, and residual berry plant). Fuel gas with maximum H2, CO, CH4, CO2 concentrations of 7.7, 32.6, 2.3, and 57.4 % (N2 free) respectively were obtained with 10 % moisture content and 7.4 cm/s air flux. The smouldering yielded 1.24 Nm3/kgfeed_dry of gas with calorific value of 1.82 MJ/Nm3 (HHV).

show abstract

High‐Performance Ionic Thermoelectric Supercapacitor for Integrated Energy Conversion‐Storage

Yang

Tian

et al. 2021

Energy & Environ Materials

View full text Add to dashboard Cite

Converting low‐grade waste heat into usable electricity and storing it simultaneously requires a new technology that realize the directional migration of electrons or ions under temperature difference and enrichment on the electrodes. Although the urgent demand of energy conversion‐storage (ECS) has emerged in the field of wearable electronic, achieving the integrated bi‐functional device remains challenge due to the different mechanisms of electrical transportation and storage. Here, we report an ionic thermoelectric supercapacitor that relies on the synergistic functions of thermoelectricity and supercapacitor in the thermoelectric ionogel electrolyte and high‐performance hydrogel electrodes to enhance the ECS performance under a thermal gradient. The thermoelectric electrolyte is composed of polyacrylamide hydrogel and sodium carboxymethyl cellulose (PMSC), possessing cross‐linked network with excellent cation selectivity, while the ionic thermoelectric properties are further improved in the presence of NaCl. The corresponding Seebeck coefficient and ionic conductivity of the NaCl–PMSC electrolyte reach 17.1 mV K−1 and 26.8 mS cm−1, respectively. Owing to good stretchability of both gel‐based electrolyte and electrode, the full‐stretchable integrated ECS device, termed ionic thermoelectric supercapacitor, presents promising thermal‐charge storage capability (~1.3 mC, ΔT ≈ 10 K), thus holds promise for wearable energy harvesting.

show abstract

Self-sustaining smouldering combustion of waste: A review on applications, key parameters and potential resource recovery

Cited by 68 publications

References 164 publications

The pressure relief protection effect of different strip widths, dip angles and pillar widths of an underside protective seam

The pressure relief protection effect of different strip widths, dip angles and pillar widths of an underside protective seam

Fuel Gas Production From Self-Sustaining Smouldering Combustion of Lignocellulosic Waste

High‐Performance Ionic Thermoelectric Supercapacitor for Integrated Energy Conversion‐Storage

Contact Info

Product

Resources

About