摘要:1. Cellulose, borosilicate glass and silica glass fiber thimble filters were achieved and inspected for the purpose of collecting micron order particles of dust in stack gas. 2. After several experiments, thimble filters of the size 25 mmD×90 mmH among other different sizes was shown most adequate for the practical use. 3. These thimble filters were revealed to have excellent characters compared to those of traditional filters.