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Fluidized bed sludge drying system

A sludge drying and fluidized bed technology, which is applied in dehydration/drying/concentrated sludge treatment, energy wastewater treatment, etc., can solve the problem of affecting the drying effect of sludge particles, high energy consumption of the air preheater, and sludge lumps The problem of different sizes can achieve the effect of improving the drying effect, prolonging the service life and reducing heat loss

Inactive Publication Date: 2014-12-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

This patent has a strong sludge drying ability, but the air preheater consumes a lot of energy, which increases the production cost; and the sludge dried in the fluidized bed is mixed unevenly, resulting in the size of the sludge after drying It is not only difficult to collect, but also seriously affects the drying effect of sludge particles

Method used

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  • Fluidized bed sludge drying system
  • Fluidized bed sludge drying system
  • Fluidized bed sludge drying system

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0027] Such as figure 1 As shown, the present invention includes a sludge mixing device, a sludge breaking device, a fluidized bed 7, a heater and a sludge collecting device. The sludge mixing device is used to uniformly mix sludge in different states into a viscous state. The sludge disintegration device is connected with the sludge mixing device through a viscous sludge conveying pipeline 8, and is used for converting the sludge in a viscous state into a lumpy sludge. The fluidized bed 7 is used to dry the lumpy sludge, and the heater provides heat for the working medium in the heat pipe heat exchanger of the fluidized bed 7, and the sludge collection device separates the dried lumpy sludge, Gather together.

[0028] The fluidized bed 7 includes a heat pipe heat exchanger layer, a sludge drying layer and an air box layer, the inlet of the air box layer is arrange...

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Abstract

The invention relates to a fluidized bed sludge drying system. The fluidized bed sludge drying system comprises a sludge blending device, a sludge breaking device, a sludge collecting device, a fluidized bed and a heater, wherein the heater comprises a solar heat supply device for providing energy for the fluidized bed, sludge to be dried is mixed to a sticky state by the sludge blending device and then conveyed to the sludge breaking device, the sludge in the sludge breaking device is firstly turned from the sticky state to a strip-like state, then the strip-like sludge is cut into block-like sludge, the block-like sludge is dried in the fluidized bed, the fluidized bed comprises a heat pipe heat exchanger layer, a sludge drying layer and an air box layer and the block-like sludge after the completion of drying is collected by the sludge collecting device. The fluidized bed sludge drying system provided by the invention has the advantages of low energy consumption, small volume and good drying effect.

Description

technical field [0001] The invention relates to a sludge treatment system in the field of environmental protection, in particular to a fluidized bed sludge drying system. Background technique [0002] With the development of urbanization, urban sewage continues to increase, and sludge, as a by-product of sewage treatment, how to deal with it has become a major problem facing society today. In some places, most of the sludge is directly dumped without other treatment methods, which not only seriously pollutes the soil environment, but also poses a serious threat to people's health. [0003] At present, the commonly used sludge treatment methods in the world mainly include: sanitary landfill, sludge incineration, sludge drying and heat treatment. Among these treatment methods, sludge drying can greatly reduce the volume of sludge, which is convenient for transportation and storage, so it is the first choice for sludge treatment in various countries. In the sludge drying proc...

Claims

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Application Information

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IPC IPC(8): C02F11/16
CPCY02W10/37
Inventor 方立军曹通殷立宝武生
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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