| 摘要 |
PROBLEM TO BE SOLVED: To provide a dry gas purification facility capable of inhibiting carbon deposition to a remover of impurities, pipelines or the like and dry purifying coal gasified gas and a method of inhibiting deposition of carbon in a coal gasification composition power generating unit equipped with the dry gas purification facility.SOLUTION: There is provided a method for adding steam or COgas as a fluid changing a ratio of χand χto a coal gasification gas produced in a coal gasification furnace so that Kdefined by the formula 1 and a reference value K(T) defined by the formula 2 become a relationship of the formula 3 where χand χare actual molar fractions of COgas and CO gas in a coal gasification gas (pressure P) flowing into a removal device 6 at a temperature T, χ(T) and χ(T) are molar fractions of COgas and CO gas under a condition that a deposition reaction of carbon at the temperature T is not proceeded and P' is a pressure of the coal gasification gas. [Formula 1] K=χ/(χ×P) [Formula 2] K(T)=χ(T)/(χ(T)×P') [Formula 3] K(T)≤K.SELECTED DRAWING: Figure 2 |
