Rotary drum type film squeezing sludge dryer

A sludge drying and drum-type technology, which is applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of complex drying process and equipment, high drying thermal efficiency, and small processing capacity of a single machine, so as to shorten the drying time, Uniform moisture content and good drying effect

Inactive Publication Date: 2016-02-03
赵忠宝
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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

Method used

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  • Rotary drum type film squeezing sludge dryer

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Embodiment Construction

[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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Abstract

The invention relates to a rotary drum type film squeezing sludge dryer, belongs to the technical field of environmental protection equipment, and relates to drying of dewatered sludge in an urban sewage treatment plant, particularly to a rotary drum type film squeezing sludge drying device for treating sewage sludge. The rotary drum type film squeezing sludge dryer is characterized in that pressure rollers drive a conveying net belt to rotate along with a rotary heating surface in which water vapor is introduced, and the dewatered sludge is driven to rotate along the rotary heating surface and the conveying net belt, so that the moisture content of the sludge is greatly decreased by virtue of the heat conduction function of the water vapor; an air suction hood is added outside for collecting, treating and recycling the hot gas generated through drying and providing the negative pressure environment for sludge drying, so that the drying effect of sludge is improved. The rotary drum type film squeezing sludge dryer has the benefits that the dryer has the advantages of being compact in structure, low in manufacture cost, low in energy consumption, quick in drying, convenient to check and maintain, and the like, and is quite applicable to large-batch sludge drying, so that the reduction and reutilization of sludge are achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment and relates to the drying of dewatered sludge in urban sewage treatment plants, in particular to a sludge drum-type film-pressing drying equipment for treating sewage sludge. 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 drying tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 赵忠宝
Owner 赵忠宝
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