Discussion on the process of producing sulfuric acid by absorbing sulfuric ammonia solution
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In the current ammonia absorption process, the circulating liquid containing ammonia as an absorbent absorbs SO2 from the exhaust gases; a reaction takes place to form sulfurous acid, which is then processed. This process is applied to the exhaust gases from sulfur recovery in refineries. Discuss the advantages and disadvantages of this process. :victory:
Ammonia escape issue? The issue of desulfurization accuracy. Wastewater problem
Before installing our unit, we used the ammonia-based desulfurization method. During the operation of the unit, the problems encountered were: 1. Issues related to water balance； 2. The temperature in the desulfurization tower exceeds the decomposition temperature of AN sulfite, causing AN sulfite to decompose and produce ammonia, sulfur dioxide, and water ； 3. The device operates unstably, with frequent occurrences of exceeding limits online ； After the device was modified to alkaline desulfurization, it has been operating stably without any instances of exceeding specified limits. And now there are companies that handle sodium sulfite solutions.