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Method for drying inorganic fine-grained sludge and movable drying system

An inorganic, mobile technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of large equipment and high cost, and achieve the effects of improving efficiency, reducing drying energy consumption, and small volume

Active Publication Date: 2014-11-19
华东理工常熟研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] 1. The purpose of the present invention is to solve the problem that the drying method in the prior art needs to be combined with other methods and microwave methods to meet the drying rate requirements, the cost is high, and the equipment is relatively large. The further drying method and mobile drying device for the dehydrated inorganic fine-grained sludge meet the needs of subsequent treatment and disposal, and have the dual effects of environmental protection and economic utilization

Method used

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  • Method for drying inorganic fine-grained sludge and movable drying system

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Effect test

Embodiment 1

[0037] Inorganic fine-grained sludge mobile drying system, including sludge dispersion and loading device, sludge leveling device, waste heat utilization device, microwave drying device, microwave leakage prevention device, exhaust gas collection and purification device, heat exchange device, condensed water The outlet of the collecting device, the sludge dispersing and loading device is connected to the sludge leveling device, the outlet of the sludge leveling device is connected to the waste heat utilization device, and the exit of the waste heat utilization device is connected to the anti-microwave leakage device, and the waste heat utilization device and the anti-microwave leakage device are respectively connected to The waste gas collection and purification device is connected to exhaust the waste gas; the microwave leakage prevention device is installed at the entrance and exit of the microwave drying device; The collection and purification device is connected, the heat o...

Embodiment 2

[0051] The difference from Example 1 is that the waterworks sludge with a water content of 65% is selected, and a 2450MHz microwave source is used to work continuously, and the sludge is 12.2 cm thick (approximately equal to 3 × 10 8 / 2450MHz), the microwave power is 1.0 kg water / electric conversion, and can be dried to 35% water content.

Embodiment 3

[0053] The difference from Example 1 is that electroplating sludge with a moisture content of 65% is selected, and a 915MHz microwave source is used for continuous operation. The sludge is 32.8 cm thick (approximately equal to 3×10 8 / 915MHz), the microwave power is 1.2 kg water / electricity conversion, and can be dried to 30% water content.

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Abstract

The invention discloses a method for drying inorganic fine-grained sludge and a movable drying device. The selective absorption characteristic of microwaves is utilized, the microwaves are taken as a main drying measure rather than an auxiliary measure, and the method provided by the invention does not need to be specific to specific kinds of inorganic fine-grained sludge. Efficient dehydration is realized, and the highest dehydrating efficiency can be up to 1.6kg of water / kWh; the conventional method which combines a plurality of measures with a microwave technology is simplified, the production cost is lowered, and the benefit is increased; heat can be effectively utilized circularly by arranging a heat exchanger, and the cyclic utilization ratio of energy is increased; and compared with the prior art, the designed equipment has the advantages of small size, can be moved on a vehicle, facilitates sludge drying at any place, and is convenient and flexibile.

Description

technical field [0001] The invention relates to a further drying method and a mobile system for realizing dehydrated inorganic fine-grained sludge by using microwaves, and belongs to the technical field of solid waste reduction and resource utilization. Background technique [0002] Inorganic fine-grained sludge refers to sludge with a moisture content of more than 90% and a sludge with an inorganic content of more than 95% in solids in the dry sludge. Reducing the moisture content of sludge generally includes two steps: dehydration and drying. The sludge with a water content greater than 90% can be reduced to a water content of 50%-65% by dehydration, and then further reduced to 5%-35% by drying. Dehydration technologies mainly include direct mechanical dehydration, dehydration with conditioner addition, microwave-assisted dehydration, electro-osmosis dehydration, ultrasonic-assisted dehydration and enzyme engineering dehydration, etc. There are many related research and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 乔秀臣
Owner 华东理工常熟研究院有限公司
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