Rotary drum type film pressing sludge baker
A sludge drying and drum-type technology, applied in dryers, dehydration/drying/thickened sludge treatment, drying, etc., can solve the problems of complex drying process and equipment, high drying thermal efficiency, and small single-machine processing capacity , to achieve the effect of shortening the drying time, uniform moisture content and good drying effect
Active Publication Date: 2009-06-03
DALIAN UNIV OF TECH
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Problems solved by technology
The advantage of indirect drying is that there is no danger of explosion and fire, the amount of tail gas produced by drying is small, the drying heat efficiency is high, the operating cost of tail gas deodorization treatment is low, and the economy of drying treatment is better. The disadvantage is that the drying process and equipment are uniform. It is more complicated, the processing capacity of a single machine is small, and it is easy to stick to the wall, so it is not suitable for the sludge with strong adhesion
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[0013] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.
[0014] The dewatered sludge is slowly fed along with the movement of the conveying mesh belt 3. When in contact with the rotating heating surface 1, the rotating heating surface 1 rotates clockwise, and the pressure roller 2 rotates counterclockwise, and the sludge is squeezed between them, so that The sludge feed maintains a certain thickness, so that the drying efficiency will not be low due to too thin material, and the drying effect will not be affected by too thick cloth. When the sludge rotates along the rotating heating surface 1 and the conveying mesh belt 3 to the pressure roller 2 with the largest opening angle (the pressure roller 2 marked with the rotation arrow), the sludge in the contact part of the sludge and the rotating heating surface 1 has been heated and dried. , forming a layer of sludge drying film, wh...
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The invention discloses a rotatable drum type diaphragm sludge drier in environmental protection equipment technical domain, which comprises the following steps: turning through pressing roll belt conveyer net belt; companying with rotary heating surface inward with water vapor; causing rotary of dewatering sludge along with rotary heating surface and conveyer net belt; decreasing moisture percentage of sludge through heat-transferring function of water vapor; adding air draught shield on the outside; collecting, disposing, reclaiming and using hot gas generating by dying; providing negative pressure environment for drying sludge; increase drying effect of sludge.
Description
technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a sludge drum-type lamination drying equipment for treating sewage sludge, which is suitable for drying dewatered sludge in urban sewage treatment plants. Background technique [0002] The moisture content of dewatered sludge in sewage plants is about 80% on a wet basis, and it is difficult to realize resource utilization without further treatment. As an important method of sludge treatment, drying has developed rapidly in recent years. Sludge drying mainly includes direct drying and indirect drying. The heat required for indirect drying is transferred to the sludge through heat conduction. The advantage of indirect drying is that there is no danger of explosion and fire, the amount of tail gas produced by drying is small, the drying heat efficiency is high, the operating cost of tail gas deodorization treatment is low, and the economy of ...
Claims
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IPC IPC(8): F26B17/28C02F11/16C02F11/12
Inventor 李爱民王伟云毛燎原
Owner DALIAN UNIV OF TECH