Wet Chemical Method for Determining Levels of Ammonia in Syngas from a Biomass Gasifier

Autor:	Robert C. Brown, Glenn A. Norton
Rok vydání:	2005
Předmět:	Biomass gasifier Wood gas generator General Chemical Engineering Energy Engineering and Power Technology Tar Mineralogy Producer gas Pulp and paper industry law.invention Filter (aquarium) Ammonia chemistry.chemical_compound Fuel Technology chemistry law Spark plug Syngas
Zdroj:	Energy & Fuels. 19:618-624
ISSN:	1520-5029 0887-0624
DOI:	10.1021/ef040065d
Popis:	A wet chemical sampling method using acidic absorbing solutions was used to determine levels of ammonia (NH3) in syngas from a biomass gasifier. Before syngas is bubbled into the absorbing solutions, a quartz thimble filter is used to filter ash from the gas stream at 450 °C followed by heavy tar removal at about 100 °C. When gasifying corn, good precision was observed for multiple samples collected on any given day of testing. Tests on producer gas obtained from gasification of switchgrass revealed important conditions for successfully sampling NH3. During gasification of switchgrass, high solids loading in the syngas caused the primary cyclone at the gasifier exit to plug, resulting in abnormally high ash loading in the thimble filter in the sampling system. While gasifying the switchgrass, the NH3 levels showed a continuous decline throughout the day. It is suspected that NH3 reacts with the ash in the thimble filter, confounding attempts to accurately measure NH3 in the syngas.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9c6ad6d2f050c828f9de04a01b315bf0 https://doi.org/10.1021/ef040065d Zobrazit plný text záznamu