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Wet sludge anhydration burning processing system and process

A treatment system, sludge incineration technology, applied in sludge treatment, water/sludge/sewage treatment, sludge drying, etc.

Active Publication Date: 2008-10-22
SHENZHEN ECO SOLUTION TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the above-mentioned defects in the prior art, to provide a wet sludge drying treatment system and treatment method, to solve the problem of sludge resource regeneration in a manner of environmental protection, energy saving, high resource utilization rate, and low operating cost

Method used

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Examples

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Embodiment 1

[0034] Such as figure 1 Shown is a process flow diagram of an embodiment of the wet sludge drying treatment system and process of the present invention. In this process, wet sludge (water content about 80%) is put into a low-temperature pyrolysis reactor, and saturated water vapor with a pressure of 1.5-3.0MPa and a temperature of 150-300°C is introduced into the reactor; the reactor is a closed horizontal The pressure vessel is equipped with a stirring device; the wet sludge and steam are stirred and mixed evenly in the kettle, and under the action of heat and pressure, the water-holding structure of solid-phase substances such as organic polymer structures and colloidal flocs in the sludge is destroyed. The physical and chemical bound water in the sludge is fully released, thereby greatly improving the dehydration and drying performance of the sludge, so that most of the water in the dewatered sludge can be released in the form of liquid water through subsequent mechanical s...

Embodiment 2

[0040] Such as figure 2 Shown is a process flow diagram of another embodiment of the wet sludge drying treatment system and process of the present invention. In this process, on the basis of the process flow of embodiment 1, the following devices and process steps have been added:

[0041] A hollow paddle dryer (fluidized bed drying equipment or airflow drying equipment, etc. can also be selected) is installed between the centrifugal dehydrator and the sludge incinerator for drying, which is used to dry and remove the semi-dry sludge after centrifugal filtration After obtaining the dried sludge-type solid fuel with a moisture content of 10-40%, it is supplied to the sludge incinerator.

[0042] In this embodiment, the saturated steam generated by the waste heat boiler is not only supplied to the low-temperature cracking reactor, but also optionally provides heat to the drying equipment for sludge drying.

[0043] At the same time, the filtrate removed by the centrifugal deh...

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Abstract

The invention relates to a wet sludge drying and incineration processing system. The system comprises a low-temperature pyrolytic reaction device, a centrifuging filtering device, a steam condensation device, a filtrate recovery device and a sludge incineration device; the low-temperature pyrolytic reaction device is used for carrying out low-temperature pyrolytic reaction between wet sludge and saturated steam in order to convert macromolecular organics in the wet sludge into low-molecular organics and destroy a sludge water-holding structure; the centrifuging device is used for carrying out centrifuging filtering to the wet sludge after pyrogenation; the steam condensation device is used for condensing and collecting bled steam converted from saturated steam in the low-temperature pyrolytic reaction device; the filtrate recovery device is used for collecting filtrate produced in the centrifuging device and for collecting condensed fluid from the steam condensation device; the sludge incineration device is used for incinerating semidry sludge after being dehydrated in the centrifuging device and insoluble gas remained in the steam condensation device as fuel. The system also relates to a process for carrying out the processing of wet sludge drying and incineration by adopting the processing system. The system and the process can solve the problem of sludge resource regeneration in a mode of environmental protection, energy conservation, high resource utilization rate and low operating cost.

Description

field of invention [0001] The invention relates to an organic waste treatment device and process, in particular to a wet sludge drying and incineration treatment system and treatment process. Background technique [0002] Wet sludge is a by-product produced in the process of sewage treatment. The composition of sludge is extremely complex, mainly containing about 80-90% water, and other organic matter that can be recycled, various organic matter, various trace elements, and possible environmental pollution. Pathogenic microorganisms, parasite eggs, heavy metals, etc. that cause adverse effects. The harmless and resourceful treatment of wet sludge is an important topic of ecological environment protection worldwide. [0003] Traditional wet sludge treatment methods include throwing into the sea (or direct discharge), landfilling and composting, but there are negative impacts on the environment (water pollution, soil pollution and air pollution, etc.) and space resources (lan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/14F23G5/027C02F11/121
CPCC02F9/00C02F11/06C02F11/10C02F11/121F23G5/04F23G7/001F26B5/08F26B7/00F26B23/022F26B23/028F26B2200/18Y02W10/40
Inventor 吉川邦夫黄彤宇张林铃木德彦
Owner SHENZHEN ECO SOLUTION TECH CORP
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