Sludge drying system with high thermal driving force

A technology of sludge drying and driving force, which is applied in the direction of sludge treatment through temperature control, dehydration/drying/thickening sludge treatment, chemical instruments and methods, etc. Conduction resistance and other problems, to achieve the effect of delaying dryness

Active Publication Date: 2017-01-04
GREEN WATER SEPARATION EQUIP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The flow of circulating gas quickly carries away water vapor, which is very effective for drying the sludge surface layer. However, experiments have proved that when the moisture content of the sludge surf

Method used

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  • Sludge drying system with high thermal driving force
  • Sludge drying system with high thermal driving force

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Embodiment Construction

[0020] The technical solutions of the present invention will be further specifically described below through examples.

[0021] figure 1 It is a schematic diagram of the structure of the sludge drying system with high thermal driving force in the preferred embodiment of the present invention. by the figure 1 It can be seen that, with the fluidized drying bed 1 as the center, the sludge slurry with a moisture content of about 80% after mechanical preliminary dehydration is pumped into the fluidized drying bed 1 by the sludge input part 2 along the screw feed channel. The granulation, heating and water removal are carried out in the drying bed; the heat transfer oil as the heat transfer medium is heated by the combustion furnace, and then is input from the oil supply system 3 to the heat exchange tube in the fluidized drying bed 1 to provide heat for heating and drying , and then recirculated back to the oil supply system 3; the circulating gas is sent into the fluidized dryin...

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Abstract

The invention provides a sludge drying system with high thermal driving force. According to the sludge drying system, on the basis of fluidized drying, sludge is radiated by microwaves, so that water molecules in the sludge are prompted to rub and collide with each other so as to heat without the restriction of heat conduction, internal and external heating is uniform, and the water molecules in the sludge are prompted to diffuse outwards under the action of the thermal driving force; granulation and fluidization of the sludge are realized by adopting a sludge spraying and dry backmixing granulation technique, so that a granule structure of which an inner core is basically dry and an outer surface layer is wrapped with the sludge is formed, and complete drying of the sludge is facilitated; the surface layer of the sludge granule is prevented from being quickly dried by adopting a water vapor backflow surface humidity preservation technique, so that more adverse effects are not generated on thermal diffusion of the internal water molecules.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge drying system with high thermal driving force. Background technique [0002] Sludge is an important pollution output formed in industrial and agricultural production and urban life. will produce sludge. Sludge contains a large number of harmful microorganisms, heavy metals and organic pollutants. If not properly disposed of, it will have a serious negative impact on the natural environment and people's health. [0003] Sludge incineration is to make the combustible substances in sludge burn at high temperature and make them oxidatively decompose, so as to achieve the purpose of reducing sludge capacity, killing harmful microorganisms, removing toxicity and making full use of energy. Sludge incineration is a widely used and mature sludge high-temperature treatment technology in foreign countries. It can minimize the volume of sludge, and has the advantages of f...

Claims

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Application Information

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IPC IPC(8): C02F11/16C02F11/18B01D45/16B01D53/00B01D50/00
CPCB01D45/16B01D50/00B01D53/002C02F11/16C02F11/18
Inventor 刘富稳
Owner GREEN WATER SEPARATION EQUIP
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