System device for directly and effectively spray-drying high-solid-content sludge and method thereof

A system device and high solid content technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of high requirements for supporting equipment, insufficient dispersion of materials, and limited application range, so as to save equipment investment and reduce energy consumption. The basic value of consumption and the effect of improving thermal power efficiency

CN101781078BInactive Publication Date: 2011-06-29星河航天科技(天津)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-06-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a system device for directly and effectively spray-drying high-solid-content sludge, which comprises a hopper, wherein the hopper is connected with a feed pump and used for feed agitation, the feed pump is connected with one end of a nozzle in a spray drying tower through a pipeline, and the other end of the nozzle is connected with an air compressor; an air inlet at the lower part of the spray drying tower is connected with a hot blast furnace through the pipeline, the top of the spray drying tower is connected with a dust remover through the pipeline, the dust removeris connected with a smoke gas wet recovery tower through the pipeline provided with an exhaust fan, and the recovery tower is communicated with a pool arranged at the bottom of the recovery tower anda nozzle at the top through the pipeline provided with a water pump. The invention also provides a method adopting the system device for directly and effectively spray-drying the high-solid-content sludge. The invention has the effects that the energy consumption is low by using the method, and the atomized sludge has small grains, uniform diameter, good drying effect, high loosening degree and high porosity and is markedly superior to other drying forms. The produced drying sludge is adaptable to the paths of combustion heating, cement manufacture, greening, landfill and the like.
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Description

technical field

[0001] The invention relates to sludge treatment and disposal technology, in particular to a system device and method for directly and efficiently spraying and drying high-solid-content sludge of municipal sludge drying treatment, and is also applicable to industrial sludge, pipe network sludge and river sludge. Drying treatment of lake sludge. Background technique

[0002] According to research and analysis, sludge and water molecules are very closely combined and have different phase states: free water; physically bound water, such as capillary / interstitial water, colloidal / surface adsorbed water; chemically bound water is called "Balanced water" includes intracellular water and molecular water.

[0003] Free water can be removed by gravity sedimentation and mechanical action in sewage treatment plants. According to different process technologies, the moisture content of the sludge after removal is different, usually 65-95%.

[0004] "Physically bound wa...

Examples

Embodiment Construction

[0034] The system device and method for direct and high-efficiency spray drying of sludge with high solid content according to the present invention will be described in conjunction with the accompanying drawings and examples.

[0035] The high-solid content sludge of the present invention is directly and efficiently spray-dried system device such as figure 1 shown. The system device includes a hopper 1 connected to a feed pump 2 for stirring, the feed pump 2 is connected to one end of the nozzle 4 in the spray drying tower 6 through a pipeline, and the other end of the nozzle 4 is connected to an air compressor 3; The air inlet at the bottom of the spray drying tower 6 is connected with a hot blast stove 5 through a pipeline, and the top of the spray drying tower 6 is connected with a dust collector 7 through a pipeline, and the dust collector 7 is connected with flue gas through a pipeline provided with an exhaust fan 8 Wet recovery tower 9, the recovery tower 9 communicate...