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METHOD FOR DRYING SLUDGE, IN PARTICULAR MUNICIPAL SLUDGE.
METHOD FOR DRYING SLUDGE, IN PARTICULAR MUNICIPAL SLUDGE.
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机译:干燥市政污泥中污泥的方法。
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摘要
A method for drying sludge which may contain combustible vapors in a manner to positively prevent fires and explosions within the sludge dryer and the associated sludge-drying piping. The method provides for a substantial reduction of the oxygen content of the sludge-drying vapors by deviating a part of the sludge-drying vapor stream from the principal vapor circuit and passing it as secondary combustion air into the combustion chamber which generates hot gases for drying the sludge. Furthermore, a portion of the hot effluents from the combustion chamber is deviated from the sludge-drying circuit and is used to heat the sludge-drying vapors whereafter it is vented to the atmosphere. In a variant of the invention, an acid scrubber is provided to remove hydrochloric acid. A number of embodiments is presented.
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