Problems with alkali cleaning equipment
Thread Content
1. The gas contains about 5% impurities of CO2 and H2S. 2. It is required that these impurities be removed completely. 3. A sodium hydroxide solution with a concentration of over 40% yields better washing results in experiments. 4. However, when applied in production, due to the high concentration of the alkaline solution, the spray tower washing method cannot be used as it easily causes clogging of the packing. 5. If a container is used to connect the bottom pipe, aerating stones are attached to the bottom of this pipe to generate tiny bubbles, which results in a better cleaning effect; however, these aerating stones tend to get clogged over time with use. Are there any other good ways?
Try reducing the concentration of sodium hydroxide
If the concentration of sodium hydroxide is reduced, the washing effect becomes poor
If the concentration of the alkaline solution is low, can it be recycled for washing?
This post was last edited by Dugu Lingyun on 2018-12-4 at 08:13. It is possible to reduce the concentration of sodium hydroxide before considering the use of a spray tower for washing; the choice of concentration should take into account the crystallization temperature. As for the effectiveness of the washing process, factors such as contact area and residence time need to be considered, which in turn relates to the selection of the tower diameter and the type of packing used
To reduce the alkali concentration, spraying is a good option; it can be designed based on the principles of absorption towers
Can reducing the alkali solution concentration and using a spray tower completely remove CO2 and H2S impurities? Has anyone done this before? Are there any data?