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Influence of solvent temperature and type on naphthalene solubility for tar removal in a dual fluidized bed biomass gasification process
Author(s)
Tonpakdee, Pimnara
Hongrapipat, Janjira
Siriwongrungson, Vilailuck
Rauch, Reinhard
Pang, Shusheng
Thaveesri, Jullapong
Messner, Michael
Kuba, Matthias
Hofbauer, Hermann
Date Issued
October 1, 2021
Type
Article
Abstract
Tar condensation is a cause of blockage in downstream application of the gasification process. An oil scrubber is considered as an effective method for tar removal. In this research, the naphthalene solubility in different local Thai oils and water was investigated in a laboratory-scale test-rig. The solubility value was conducted at 30, 50, 70, and 80°C. Biodiesels investigated were rapeseed methyl ester (RME) and two different palm methyl esters (PME 1 and PME 2). Furthermore, vegetable oils including sunflower oil, rice bran oil, crude palm oil, and refined palm oil were examined. The results showed that higher temperature enhanced naphthalene solubility in all types of investigated oils. Biodiesel has the highest value of naphthalene solubility. All scrubbing oils have similar naphthalene solubility trends at the temperature range of 50-80°C in the order of RME > PME 1 > PME 2 > diesel > sunflower oil > refined palm oil > rice bran oil > crude palm oil. Based on these experimental investigations, PME 1 has a naphthalene solubility value similar to RME. Therefore, PME 1 has been selected to be tested as scrubbing solvent in the 1 MWel prototype dual fluidized gasifier located in Nong Bua district, Nakhon Sawan province, Thailand.
Citation
Current Applied Science and Technology, 21(4), 751-760, 2021