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Co-combustion of solid recovered fuel with coal in an entrained flow reactor and the effect of additives: The 35th International Technical Conference on Clean Coal & Fuel Systems
| Content Provider | Semantic Scholar |
|---|---|
| Author | Glarborg, Peter Dam-Johansen, Kim Jensen, Peter Arendt Frandsen, Flemming Sander, Bo |
| Copyright Year | 2010 |
| Abstract | Co-combustion of a bituminous coal (COCERR) and a solid recovered fuel (SRF) was carried out in a 5KW entrained flow reactor, and the effects of different additives including NaCl, PVC, ammonium sulphate (AmSulf), and Kaolin on co-combustion were investigated. Different SRF shares, 7.9%, 14.8% and 25% (weight basis), were applied in the co-combustion experiments, and the effects of different additives on co-combustion were evaluated by maintaining the coal share at 85.2%. The experimental results showed that the both the NO and SO2 emissions in cocombustion of coal and SRF decreased with increasing share of SRF. Most of the additives did not have significant impacts on the emissions of NO, expect for the AmSulf which showed significant reduction effects on NO. For SO2 emissions, it was found that all of the additives increased the retention of sulphur in the ashes. Analysis of the compositions of ashes from experiments showed that the majority of the S and Cl in the fuels was released to the gas phase during combustion, whereas the K and Na in the fuels were mainly retained in the ashes, with a slight enrichment in smaller particles. In co-combustion of coal and SRF, the majority of K and Na (~99%) in the fuels was present in a water insoluble form. The addition of NaCl, PVC, and AmSulf generally increased the overall vaporization of K and Na, resulting in increased formation of water soluble alkalis, whereas the addition of Kaolin showed a slight reduction effect on the formation of water soluble alkalis. During the experiments, ash deposits were formed on an air-cooled probe, with a flue gas temperature of 800 C and a probe surface temperature of 550 C. The results showed that the deposition propensity of the fly ashes in co-combustion generally decreased with increasing share of SRF. The addition of NaCl and PVC increased the ash deposition propensity, whereas the addition of AmSulf and Kaolin showed opposite effects. The Cl content in the deposits generally indicated a low corrosion potential, except for the cases with NaCl and PVC additions. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://backend.orbit.dtu.dk/ws/portalfiles/portal/5203645/1015+-+Co-combustion+of+solid+recovered+fuel+with+coal+in+an+entrained+flow+reactor+and+the+effect+additives.pdf |
| Alternate Webpage(s) | http://orbit.dtu.dk/files/5203645/1015%20-%20Co-combustion%20of%20solid%20recovered%20fuel%20with%20coal%20in%20an%20entrained%20flow%20reactor%20and%20the%20effect%20additives.pdf |
| Alternate Webpage(s) | http://orbit.dtu.dk/fedora/objects/orbit:59728/datastreams/file_5203645/content |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
