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Urban life sludge locally self-circulation comprehensive utilization device and method

A technology for municipal domestic sludge and sludge, which is applied in combustion methods, dehydration/drying/thickened sludge treatment, lighting and heating equipment, etc., can solve secondary pollution and other problems, achieve cost saving, avoid pollution along the way, and automate high degree of effect

Active Publication Date: 2012-01-11
HANGZHOU HUADIAN ENERGY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the sludge contains a large amount of heavy metals, it will be transferred to the flue gas during the combustion process, causing secondary pollution

Method used

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  • Urban life sludge locally self-circulation comprehensive utilization device and method
  • Urban life sludge locally self-circulation comprehensive utilization device and method
  • Urban life sludge locally self-circulation comprehensive utilization device and method

Examples

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Embodiment 1

[0029] Embodiment 1: as Figures 1 to 4 As shown, this embodiment consists of a sludge granulator 1, a sludge dryer 2, a feeder 3, an air distribution plate 6, a cyclone separator 7, a small ash hopper 8, a return device 9, an ash discharge device 10, It consists of induced draft fan 11, air preheater 12, bag filter 13, chimney 14, circulating fluidized bed boiler 16, air intake pump 18, superheater 16-6, and downstream flue 16-1.

[0030] The discharge port of the sludge granulator 1 is opposite to the feed port 2-1 of the sludge dryer 2, and the discharge box 2-4 of the sludge dryer 2 is connected to the fuel feed port 4 of the circulating fluidized bed boiler 16 In contrast, the cyclone separator 7 is connected to the circulating fluidized bed boiler 16 through pipelines. A small ash hopper 8 , a material return device 9 , and an ash discharge device 10 are arranged below the cyclone separator 7 , and the material return device 9 is connected to a circulating fluidized bed...

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Abstract

The invention relates to an urban life sludge locally self-circulation comprehensive utilization device and a method. By locally establishing an urban life sludge processing system, the heat generated from the burning of sludge is utilized to dehydrate and dry wet sludge, thus realizing heat self-circulation and quantitative reduction of sludge in the system. The device provided by the invention has advantages of reasonable design of the structure, less pollution of combustion products, good continuous operation performance, high combustion efficiency, simple maintenance, low carbon and energy conservation.

Description

technical field [0001] The invention relates to an on-site self-circulating comprehensive utilization device and method for municipal domestic sludge. This process can simultaneously solve the problems of urban domestic sludge treatment and comprehensive utilization without energy input, and realize the stabilization of sludge treatment , reduction, harmlessness, and resource utilization. Background technique [0002] In the process of urban domestic sewage treatment, a large amount of biologically active sludge will be produced. The sludge discharged from urban sewage treatment plants has a water content of about 80%, is perishable and smelly, and contains a large amount of organic matter, plant nutrients, heavy metals, pathogenic bacteria, parasites (eggs) and other harmful substances, which is inconvenient for disposal and utilization. If not properly disposed of And disposal will cause secondary pollution to the surrounding environment of the stacking area. [0003] At...

Claims

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Application Information

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IPC IPC(8): C02F11/12F23G7/00
Inventor 朱跃李锋何胜程雪山杨用龙马彦斌王仁雷
Owner HANGZHOU HUADIAN ENERGY ENG
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