The problems are presented of the bricks on the conical bottom of the localized coal-water slurry gasifier, quench ring and downcomer cylinder in operation in the large nitrogenous fertilizer plant.

• 摘要介绍了国产化大氮肥水煤浆气化炉锥底砖、激冷环和下降筒在使用中出现的问题。