TABLE 1.
Different gas compositions obtained by authors in steam plastics waste gasification.
| Plastic type | Reactor | Reaction conditions | Bed material | Composition of gas (% vol) | Gas produced (m3/kg) | LHV (MJ/m3) | Tar content (g/m3) | References |
|---|---|---|---|---|---|---|---|---|
| Waste plastics | Plasma reactor | Gasifying agent: steam/O2 T: 1,200 | — | CO: 34, H2: 62, CH4: –, CO2: – | 3.5 | 10.1 | — | Rutberg et al. (2013b) |
| PE | Spouted bed reactor (0.1 kg h−1) | T: 900, S/P: 1 | Olivine | CO: 27, H2: 58, CH4: 7, CO2: 3 | 3.2 | 16.2 | 15 | Erkiaga et al. (2013a) |
| PE | Spouted bed reactor | T: 900, S/P: 1 | γ-Alumina | CO: 26, H2: 59, CH4: 8, CO2: 2 | 3.3 | 16.2 | 16.1 | Erkiaga et al. (2013a) |
| PE | Two steps: Spouted bed plus packed bed reactor (0.1 kg h−1) | T: 900/600–700, S/P: 1 | Olivine/NiCa-Al2O4 | CO: 8–12, H2: 71–73, CH4: 3–0.3, CO2: 17–15 | 4.4–5.6 | — | 0 | Lopez et al. (2015b) |
| PET | Semi-batch and fixed (packed) bed reactor | T: 1,000 | — | CO: 6, H2: 61, CH4: 2, CO2: 12 | — | 7.8 | — | Lee et al. (2014) |
| PS + PE | Fluidized bed (dual) (15 kg h−1) | T: 850, S/P: 1.8 | Olivine | CO: 24, H2: 52, CH4: 12, CO2: 7 | 1.4 | 17 | 110 | Martínez-Lera et al. (2013a) |
| PET + PE | Fluidized bed (dual) (15 kg h−1) | T: 850, S/P: 1.2 | Olivine | CO: 20, H2: 27, CH4: 15, CO2: 29 | 1 | 16.4 | 160 | Martínez-Lera et al. (2013a) |
| PE + PP | Fluidized bed (dual) (15 kg h−1) | T: 850, S/P: 2.0 | Olivine | CO: 22, H2: 46, CH4: 16, CO2: 5 | 2.1 | 19.4 | 30 | Martínez-Lera et al. (2013a) |
| PP | Fluidized bed (dual) (15 kg h−1) | T: 850, S/P: 2.0 | Olivine | CO: 4, H2: 34, CH4: 40, CO2: 8 | 1 | 27.2 | 180 | Martínez-Lera et al. (2013a) |
| PE | Fluidized bed (dual) (15 kg h−1) | T: 850, S/P: 2.0 | Olivine | CO: 7, H2: 38, CH4: 30, CO2: 8 | 1.2 | 25.8 | 190 | Martínez-Lera et al. (2013a) |
| HDPE | Fixed (packed) batch bed (0.1 g) | Gasifying agent: steam/O2 1:1, T: 850 | Ni-dolomite | CO: 43, H2: 35, CH4: 11, CO2: 10 | 2.4 | — | 17 | Friengfung et al. (2014) |
| PS | Fixed (packed) batch bed (0.1 g) | Gasifying agent: steam/O2 1:1, T: 850 | Ni-dolomite | CO: 43, H2: 29, CH4: 1.7, CO2: 26 | 1.3 | — | 290 | Friengfung et al. (2014) |
| PP | Fixed (packed) batch bed (0.1 g) | Gasifying agent: steam/O2 1:1, T: 850 | Ni-dolomite | CO: 45, H2: 38, CH4: 9, CO2: 8 | 1.9 | — | 140 | Friengfung et al. (2014) |
| Plastic waste | Fixed (packed) batch bed (0.1 g) | T: 850 (15 °C/min) | — | CO: 19, H2: 44, CH4: 20, CO2: 13 | — | 20.4 | — | Akkache et al. (2016) |
| Plastic waste and refuse paper | Fixed (packed) batch bed (0.1 g) | T: 900 | — | CO: 22, H2: 38, CH4: 12, CO2: 17 | 0.9 | 17.9 | — | Hwang et al. (2014) |
| PW waste | Fixed (packed) bed (0.3 kg h−1) | T: 700–900, S/P: 1.33 | Ni/γ-Al2O3 | CO: 20–27, H2: 17–37, CH4: 21–10, CO2: 35–21 | 1.22–2.04 | 12.4–11.3 | 106–13 | HeMXiao et al. (2009a) |