Co-combustion of biochemical sludge
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I have reviewed some literature, which indicates that the blending ratio ranges from 10% to 33%. The water content in biochemical sludge is estimated to be around 80%. Has anyone among you experienced similar cases of blending such materials? I plan to carry out co-firing in a bubbling fluidized bed or a circulating fluidized bed furnace; I’m not sure if this is feasible. If possible, could you provide relevant information or design plans? The challenges lie in determining the co-firing ratio and mixing the sludge with coal powder. Thank you in advance for any assistance you can offer.
Mixing it in for combustion is definitely possible; it’s just a matter of the proportion. The question is whether it complies with environmental protection laws.
It certainly meets the requirements; the sludge used in blending is classified as general waste, satisfying environmental protection standards
Combusting with it is definitely possible； The key is to dry it out, if possible ； The cost is also not low ； Proportion problems ； It cannot be too large ； Also, the humidity of the coal used in your boiler should not be high ； Otherwise ； Prone to caking ； The heat content of biological sludge is at least around 1,000 calories ； Absolutely possible
Drying is too troublesome; it requires special equipment as well, and the operating costs are high. I want to mix the materials directly by controlling the proportion of each component before feeding them into the furnace for combustion
Your moisture content is a bit too high; the proportion isn’t controlled properly, which may often lead to fire suppression issues. It mainly depends on the calorific value. Additionally, I came across a case of directly burning domestic sludge
Could you talk about the experience with co-firing?