Pollutant emissions during the pyrolysis and combustion of flexible polyurethane foam

Garrido, María A.; Font, Rafael; Conesa, Juan A.

doi:10.1016/j.wasman.2016.04.007

Cited by 47 publications

(26 citation statements)

References 30 publications

(5 reference statements)

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“…Knowledge of the thermal performance of expanded RPUF can also help understanding shelf life and durability , and optimizing processing and quality. Indeed, RPUF present an amount of thermal energy close to that of solid fuels, as coal and heavy oil, and may replace fossil fuels in cement kilns or positively affect waste treatment plants . However, study of the thermal decomposition of these foams is particularly difficult, since they degrade in a number of decomposition steps, and generate several gaseous products.…”

Section: Introductionmentioning

confidence: 99%

Thermal and combustion features of rigid polyurethane biofoams filled with four forest‐based wastes

Delucis

Magalhães²,

Petzhold³

et al. 2018

Polymer Composites

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In this study, four fillers from forest‐based wastes were studied using thermogravimetry and contact angle measurements, and their compatibility with polyurethane were investigated by infrared spectroscopy performed in induced reaction mixtures, wherein the fillers were tested in the presence of excess isocyanate and catalyst. The fillers were then incorporated into rigid bio‐based polyurethane foams (RPUFs), which were characterized using thermal and combustion analyses. Wood presented higher compatibility with the polyurethane system, leading to a copolymer formation comprised by urethane groups during its polymerization. Filled RPUF reached increased thermal and dimensional stabilities, and similar thermal conductivities and flammabilities compared with the neat RPUF. POLYM. COMPOS., 39:E1770–E1777, 2018. © 2018 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Thermal and combustion features of rigid polyurethane biofoams filled with four forest‐based wastes

Delucis

Magalhães²,

Petzhold³

et al. 2018

Polymer Composites

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“…The present study comprises emission data from a total of 98 experimental runs corresponding to 20 different types of waste. In a previous paper 4 it was evaluated the reproducibility of similar runs to that presented in this work, where it is shown that the reproducibility is quite good for all kind of compounds analysed in the emissions from pyrolysis and combustion of polyurethane foams.…”

Section: Experimental Datamentioning

confidence: 89%

“…A complete and interesting dataset was collected from these series of runs, that combined different wastes and conditions of thermal decomposition (temperature, residence time, oxygen presence). Specifically, data from the following previous studies were used in the present work (classified according to the waste used in the study): www.nature.com/scientificreports www.nature.com/scientificreports/ • Meat and bone meal (MBM) 5 • Poly vinyl chloride (PVC) 6 • Cotton and polyester fabrics 7,8 • Sewage sludges 9,10,19 • Electronic waste (including materials from mobile phones and electric wires) [11][12][13] • Polychloroprene (neoprene) 14 • Solid Recovered Fuel (SRF) 20 • Mattresses wastes (viscoelastic and polyurethane foams) 4,15 • Furniture wood waste 17 • Automotive Shredder Residue (ASR) 16 • Pine cones and needles 26 • Tomato plant 25 . Table 1 shows the calculations conducted during the decomposition modelling of one particular ASR waste.…”

Section: Methodsmentioning

confidence: 99%

Estimation of Industrial Emissions during Pyrolysis and Combustion of Different Wastes Using Laboratory Data

Conesa

García

Palmer

2020

Sci Rep

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In our lab, we have been studying the emissions of different pollutants during pyrolysis and combustion of wastes under different conditions for the last three decades. These studies have focused on the effect of temperature and presence of oxygen on the production of different pollutants. Waste decomposition has been studied in a horizontal laboratory scale reactor, but no estimate has been made of the actual emissions in a conventional thermal decomposition system. In the present study, emissions during these wastes’ thermal decomposition were estimated using Aspen HYSYS. In the simulation software, the waste composition (elemental analysis) was given as an input parameter, as well as the gas flow rate used as atmosphere during the decomposition. The emitted hydrocarbons measured in the laboratory were equated to the emission of a single compound (propylene). The simulation permitted calculating the percentage of oxygen in the emitted gas, and the pollutant emissions were then recalculated under standard conditions. The emission of dioxins and furans were estimated under different conditions of decomposition, and an adequate approximation of the waste decomposition in actual incineration systems could be obtained.

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“…The materials employed for the combustion runs were: PUF from mattress waste, which (Conesa and Soler, 2017;Garrido et al, 2016). For comparison purposes, the results are shown in Table 1.…”

Section: Characteristics Of Materials and Experimental Proceduresmentioning

confidence: 99%

“…However, the production of CNPs is limited and expensive at the moment. Nevertheless, pyrolysis of fuel with significant nitrogen content such as PUF produces gaseous NH3 at high levels (Garrido et al, 2016;Moreno and Font, 2015), which has been found as an effective inhibitor of the PCDD/F formation (Hajizadeh et al, 2012;Liu et al, 2015;Ruokojärvi et al, 2004). In addition, it must be noted that the first stage of combustion is a pyrolysis process, in which NH3 formation can be high if the nitrogen content of the fuel is significant.…”

Section: Introductionmentioning

confidence: 99%

Inhibition effect of polyurethane foam waste in dioxin formation

2019

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The present work has been focused on studying the polychlorinated polychlorodibenzop-dioxin/furan (PCDD/F) inhibition in the combustion process by prior addition of an inhibitor to the fuel. Three different experiments of combustion were carried out at 850 ºC in a laboratory-scale horizontal tubular quartz reactor, and several compounds were analyzed from the flue gas obtained, such as PCDD/Fs, dioxin-like polychlorinated biphenyls (dl-PCBs), NH3, HCN, NOx, HCl, Cl2, chlorobenzenes (ClBzs), chlorophenols (ClPhs), polycyclic aromatic hydrocarbons (PAHs), volatile and other semivolatile organic compounds. The fuel used was a synthetic waste which was composed of sawdust and PVC (95 wt% and 5 wt%, respectively) and the inhibitors studied were polyurethane foam (PUF) that can be found in mattress waste and gases from the oxidative pyrolysis of PUF. Due to the high N content of PUF, a significant decrease of PCDD/F and dl-PCB formation has been obtained in the experimental runs carried out with the inhibitors studied, particularly with the gases from the oxidative pyrolysis of PUF. In addition, it must be noted that emissions of incomplete combustion products have also decreased.

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Pollutant emissions during the pyrolysis and combustion of flexible polyurethane foam

Cited by 47 publications

References 30 publications

Thermal and combustion features of rigid polyurethane biofoams filled with four forest‐based wastes

Thermal and combustion features of rigid polyurethane biofoams filled with four forest‐based wastes

Estimation of Industrial Emissions during Pyrolysis and Combustion of Different Wastes Using Laboratory Data

Inhibition effect of polyurethane foam waste in dioxin formation

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