[article]
| Titre : |
Thermal decomposition of waste linear alkylbenzene sulfonate |
| Type de document : |
texte imprimé |
| Auteurs : |
Hyung Ju Lee, Auteur ; Kyun Young Park, Auteur ; Monn surk-silk, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 8412–8415 |
| Note générale : |
chemical engineering |
| Langues : |
Anglais (eng) |
| Mots-clés : |
thermal decompositionlinear alkylbenzene |
| Résumé : |
A thermal decomposition is proposed to convert a waste linear alkylbenzene sulfonate (LAS) into a solid material that is environmentally more favorable and disposable at a lower cost. The waste LAS is a viscous liquid containing sulfur as high as 13.3 wt %. The waste LAS was heated in a nitrogen atmosphere at 200−300 °C for 1−4 h. The thermal treatment at 250 °C for 2 h decomposed the waste into vapors and a solid material or residue, 2.0 wt % in sulfur content. The vapors were cooled with water to form two condensate layers in the receiving cylinder. The upper layer was identified to be a linear alkylbenzene (LAB) and the lower one a mixture of water and organic sulfur oxy compounds. The uncondensed vapor that left the condenser was determined to be a mixture of SO2, SO3, and H2SO4. A material balance shows that the mass of the waste LAS charged was distributed in the decomposition products as follows: the solid residue, 65.3%; the LAB, 5.6%; the mixture of water and organic sulfur compounds, 5.6%; the mixture of SO2, SO3, and H2SO4, 21.5%; unidentifiable loss, 2.0%. |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie800382n |
in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p. 8412–8415
[article] Thermal decomposition of waste linear alkylbenzene sulfonate [texte imprimé] / Hyung Ju Lee, Auteur ; Kyun Young Park, Auteur ; Monn surk-silk, Auteur . - 2008 . - p. 8412–8415. chemical engineering Langues : Anglais ( eng) in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p. 8412–8415
| Mots-clés : |
thermal decompositionlinear alkylbenzene |
| Résumé : |
A thermal decomposition is proposed to convert a waste linear alkylbenzene sulfonate (LAS) into a solid material that is environmentally more favorable and disposable at a lower cost. The waste LAS is a viscous liquid containing sulfur as high as 13.3 wt %. The waste LAS was heated in a nitrogen atmosphere at 200−300 °C for 1−4 h. The thermal treatment at 250 °C for 2 h decomposed the waste into vapors and a solid material or residue, 2.0 wt % in sulfur content. The vapors were cooled with water to form two condensate layers in the receiving cylinder. The upper layer was identified to be a linear alkylbenzene (LAB) and the lower one a mixture of water and organic sulfur oxy compounds. The uncondensed vapor that left the condenser was determined to be a mixture of SO2, SO3, and H2SO4. A material balance shows that the mass of the waste LAS charged was distributed in the decomposition products as follows: the solid residue, 65.3%; the LAB, 5.6%; the mixture of water and organic sulfur compounds, 5.6%; the mixture of SO2, SO3, and H2SO4, 21.5%; unidentifiable loss, 2.0%. |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie800382n |
|
Ajouter le résultat dans votre panier Faire une suggestion Affiner la rechercheEffect of reactive distillation on the yield of tetraacetylethylenediamine (TAED) in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010)
