Reasons of high efficiency dedusting and no settling dust and no abra-sion at the throat inlet of the system under the condition of no water With the double-Venturi Tube washing process are presented.

• 介绍了双文清洗工艺中在喉口不供水的情况下系统仍能高效除尘而且喉口不积灰不磨损的原因。