Refinery excess sludge dewatering method and refinery excess sludge dewatering apparatus
A technology for excess sludge and oil refineries, applied in the direction of water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve unfavorable transportation, storage and digestion, poor dehydration effect, complicated process flow and other problems to achieve the effect of high dehydration efficiency, convenient operation and low operating cost
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[0073] In a deep dewatering device for surplus sludge in an oil refinery, the deep dehydration of surplus sludge is carried out according to the method and device of the present invention, and its specific operation process and effects are described as follows:
[0074] 1. Properties of excess sludge
[0075] The excess sludge used comes from the excess sludge of Shanghai Secco Petrochemical Co., Ltd. After the biochemical excess sludge of Secco Petrochemical is dehydrated by a centrifuge, the moisture content is still 90.9% by weight, and the average particle size is 13.1μm. The mud properties are shown in Table 1 below.
[0076] Table 1: Properties of Aqueous Sludge
[0077]
[0078] 2. Implementation process
[0079] Implement with reference to the method of the present invention, specifically as follows:
[0080] In this embodiment, the material is water-containing sludge, and air is selected as the gas for the swirling and autorotation dehydration of the sludge and ...
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