Preparation of a new high-performance calcium-based desulfurizer using a steam jet mill.
J Hazard Mater
; 389: 121914, 2020 05 05.
Article
en En
| MEDLINE
| ID: mdl-31879114
ABSTRACT
Dry flue gas desulfurization is an increasingly attractive technique in SO2 emission control. However, the low efficiency in dry desulphurization is the bottleneck of this technology. To find a high-performance desulfurizer is an urgent task. This research utilized a steam jet mill digestion to prepare a desulfurizer at steam temperature of 220â¯â and pressure of 0.45â¯MPa, and compared this product with the conventional digestion desulfurizer. Our results show that the digestion in steam jet mill can transform all the calcium oxide into calcium hydroxide. The calcium hydroxide had good fluidity and with honeycomb morphological characteristics. The experiments of dry flue gas desulfurization demonstrated that under the relative humidity of 15, 30 and 45%, the total dead times were 340, 640 and 720â¯min, the working time for keeping a 100% desulfurization efficiency were 120, 420 and 580â¯min, and the total sulfur fixation were 124.05, 274.58 and 332.09â¯mg. Compared with the desulfurizer by conventional dry digestion, the desulfurizer prepared in this research had a significantly superior performance. This experiment provides a new method for high-performance desulfurizer via quicklime digestion, which is an important step in pushing forward the application of dry flue gas desulfurization.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Hazard Mater
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2020
Tipo del documento:
Article