Abstract: The following problems existed in the production of anhydrous sodium sulfate:1) low thermal utilization ratio of high-temperature condensate water and serious waste of condensate water;2) high power consumption;3) severe dust pollution.The application of comprehensive utilization technology of high-temperature condensate water AC frequency conversion governer,and closed exhaust dust circulation technology in the production of anhydrous sodium sulfate was introduced.The three new technologies have some reference value for the cleaner production of anhydrous sodium sulfate and energy saving.<BR>