Abstract
In order to use coke oven gas (COG) as a chemical feedstock and/or city gas, it is necessary to reduce or eliminate various impurities, especially sulfur compounds. An adsorbent to remove a sulfur compound, carbon disulfide (CS2), at around room temperature is investigated. Calcium silicate impregnated with diethanolamine is found to show high adsorption activity in the low temperature range of 4050°C. In COG containing large amounts of hydrocarbons and carbon dioxide, the adsorbent removes 100% of CS2 for 280 days at 45°C and a space velocity of 99 h-1. By using this adsorbent and the previously reported K2CO3 impregnated alumina catalyst, more than 96% of CS2 and 76% of carbonyl sulfide, which account for most organic sulfur compounds in COG, are removed for 300 days at 45°C under atmospheric pressure
