Water curtain dust removal is used for boiler flue gas emissions; so what happens to the water after dust removal?
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Hello, esteemed colleagues. The company’s boilers use a water curtain dust removal system, but the water resulting from this process contains a large amount of coal particles. At present, the company employs two-stage sedimentation tanks to allow the water to settle and be reused; however, the sedimentation effect is not satisfactory. Lime is being added to improve this situation. I hope the seniors have some good experiences regarding how to make changes through pool design, so as to facilitate the addition of chemicals, simplify operations, and also make it easier to clean up the sediment at the bottom. Is there any better reagent with a better precipitation effect?
This post was last edited by stony_wanghc on 2010-12-27 09:03. It should be dust removal using a water film; the fact that you’re using lime indicates that you’re also carrying out desulfurization. These are all simple systems designed to minimize costs. There are many ways to achieve the effect you described, but the investment required is high
This post was last edited and replied to by lee75008 on 2010-12-26 21:25. 1# **anggang, hello, poster! In my opinion: you currently have two stages of sedimentation, and there are still large carbon particles present. I assume you haven’t installed any filtering devices; to save money and effort, you should simply install several filtering units at the outlet of the sedimentation tank (such as screens, chosen based on the size of your carbon particles), with the pore sizes getting smaller progressively. Additionally, it’s necessary to clean the filters regularly. As for the sediment at the bottom of the tanks, you can clean it regularly; for two tanks, just clean one at a time on a rotating basis. If conditions permit, it is best to avoid manual cleaning; your smoke may contain sulfur, and having people down there could pose many safety risks. It is recommended to use excavators or other mechanical devices to ensure the safety of personnel. Of course, if necessary, you can modify the pool and add an automatic slag removal system. The above are personal experiences; please forgive any imperfections.
I’m glad, thank you. I wonder if anyone has any actual cases in which they could provide a detailed description of how they handled this situation and the devices used
Why is no one talking? . . .
:'(No one suggests any plans at all. . . .
Haha, it’s your process that’s incorrect. You should first install a cyclone dust collector to remove larger particles; this will naturally reduce the amount of particulates in the sedimentation tank. After that, use lime water to remove sulfur. A water circulation system will suffice for this purpose. If the sulfur removal effect isn’t good enough, you can use sodium silicate, though it’s more expensive