Ask about the problem of variable desulfurization foam settlement and separation
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Hello everyone! Recently, in our factory, the separation of desulfurization foam in the settling tank has changed. The desulfurization clear liquid is on top, and the sulfur foam is on the bottom. This causes the separation sack (relatively crude: lol) to be blocked, and it cannot achieve the separation effect. Nowadays, pumps are mostly used to pump the supernatant liquid back and forth into the system and slowly adjust it. The shape and color of the sulfur bubbles in the regeneration tank are good, and the density of the sulfur bubbles is relatively high. Compared with the past, after the sulfur bubbles were flotated and the overflow sulfur channel ruptured, they were all desulfurization liquid, whereas in the past, sulfur paste was the main source. My friends, has your factory encountered a similar situation? If so, how to solve it? Please give me more advice, thank you! :handshake
The form of sulfur is relatively complex and is affected by many factors. According to the situation of your factory, it is enough to overflow the sulfur paste at the upper part of the foam tank, and then melt the sulfur when the sulfur paste at the bottom reaches a sufficient amount. Discuss again.
I wonder what wet desulfurization process your factory uses? Some surfactants, such as activated tannin extract, can be added to the regeneration tank, and the amount of regeneration air can be increased to improve the flotation effect.
The shape of sulfur particles is relatively complex. How these particles aggregate causes different sulfur foam shapes, that is, whether they float on the liquid surface or sink to the bottom of the tank. This increases the settling time, allows the solid and liquid to fully separate, releases the desulfurization clear liquid, and processes the rest. If you have a filter, it will be easier to handle.
The phenomenon you mentioned is very common. The best way is: Remove the foam filter tank, install a microporous filter (ceramic membrane, planting membrane, Gore membrane, etc.), and use the intermittent sulfur melting process. The advantage is: 1. Save steam. 2. Reduce the formation of secondary salts. 3. Reduce catalyst consumption. 4. Low labor intensity. 5. The desulfurization liquid is of good quality. 6. Eliminate sulfur blockage. 7. Reduce corrosion. :handshake :P This post was last edited by 7276166 on 2007-12-17 17:49 ]
Who can provide specific equipment and processes?
Add a valve to the middle and lower part of the foam tank. After the foam tank is full, let it sit for an hour. Open the valve to drain the supernatant liquid, and then stir and process the sulfur foam.
If a stirrer is added to the foam tank, the on-site environment of the previous continuous sulfur melting kettle will be much better, and the labor intensity will be reduced for workers.