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Wet sludge drying, incinerating and treating device

A treatment device and wet sludge technology, applied in the field of waste treatment devices, can solve problems such as heat waste, and achieve the effects of reducing consumption, reducing operating costs, and simplifying the device

Inactive Publication Date: 2009-03-18
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if there is no heat user near the sludge incineration plant area, the hot water or steam generated by the water-cooled heating surface needs to be cooled by the cooling system, resulting in waste of heat

Method used

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  • Wet sludge drying, incinerating and treating device
  • Wet sludge drying, incinerating and treating device
  • Wet sludge drying, incinerating and treating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 1 :

[0039] A circulating fluidized bed incinerator is used to incinerate wet sludge with a moisture content of 76% and a calorific value of 3000kcal / kg on a dry basis. After the wet sludge C is dried in the sludge dryer 9, it is incinerated in the furnace 1, and the incineration produces The high-temperature flue gas is cooled by the heat exchanger 5 and the air preheater 6 in the tail flue 4, and the dust is removed by the dust collector 7, and then discharged through the chimney 8.

[0040] The circulating fluidized bed incinerator includes a circulating fluidized bed furnace 1, a separator 2, a feeder 3, a tail flue 4, a dust collector 7, a chimney 8 and an auxiliary system, as well as a fluidized bed sludge dryer 9.

[0041] The furnace 1 is insulated, and the side wall is provided with a secondary tuyere, a feeding port, and a dry sludge inlet.

[0042] The sludge dryer 9 is a fluidized bed type, with a wind cap and an air distribution plate at the ...

Embodiment 2

[0051] see figure 1 :

[0052] A circulating fluidized bed incinerator is used to incinerate wet sludge with a moisture content of 60% and a calorific value of 3000kcal / kg on a dry basis. After the wet sludge C is dried in the sludge dryer 9, it is incinerated in the furnace 1, and the incineration produces The high-temperature flue gas is cooled by the heat exchanger 5 and the air preheater 6 in the tail flue 4, and the dust is removed by the dust collector 7, and then discharged through the chimney 8.

[0053] The circulating fluidized bed incinerator includes a circulating fluidized bed furnace 1, a separator 2, a feeder 3, a tail flue 4, a dust collector 7, a chimney 8 and an auxiliary system, as well as a fluidized bed sludge dryer 9.

[0054] A water-cooled heating surface is provided in the furnace 1, and its side wall is a membrane water-cooled wall, and the lower part of the side wall is provided with a secondary tuyere, a feeding port, and a dry sludge inlet.

[0...

Embodiment 3

[0063] see figure 2 :

[0064] A circulating fluidized bed incinerator is used to incinerate wet sludge with a moisture content of 76% and a calorific value of 3500kcal / kg on a dry basis. After the wet sludge C is dried in the sludge dryer 9, it is incinerated in the furnace 1, and the incineration produces The high-temperature flue gas is cooled by the heat exchanger 5, the air preheater 6 and the waste heat boiler 11 in the tail flue 4, and the dust is removed by the dust collector 7, and then discharged through the chimney 8.

[0065] The circulating fluidized bed incinerator includes a circulating fluidized bed furnace 1, a separator 2, a feeder 3, a tail flue 4, a dust collector 7, a chimney 8 and an auxiliary system, as well as a fluidized bed sludge dryer 9.

[0066] The furnace 1 is insulated, and the lower part of the side wall is provided with a secondary tuyere, a material return port and a dry sludge inlet.

[0067] The sludge dryer 9 is a fluidized bed type, w...

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Abstract

The invention discloses an incineration treatment device for wet sludge and relates to a technology for treating waste. The device comprises a circulating fluidized bed hearth, a separator, a feed returning device, a tail flue, a dust catcher and a chimney and also comprises a fluidized bed type sludge drier; the top of the sludge drier is provided with an exhaust gas outlet and a wet sludge inlet; the bottom of the sludge drier is provided with a wind distribution device and a dry sludge outlet; the inside of the sludge drier is provided with an exothermic pipe coil filled with a heat exchange medium; the tail flue is provided with an air preheater and a heat exchanger; the heat exchanger is communicated with the exothermic pipe coil in the sludge drier; the lower part of the sidewall of the circulating fluidized bed hearth is provided with a secondary wind port, a feed returning port and a dry sludge inlet; the dry sludge inlet is communicated with the dry sludge outlet of the sludge drier; and the secondary wind port is communicated with the exhaust gas outlet of the sludge drier. The device recycles heat of sludge incineration with a process as simple as possible, carries out incineration treatment to the wet sludge with low energy consumption and simultaneously has no harmlessness to gas deodorization.

Description

technical field [0001] The invention relates to a waste treatment device, in particular to a sludge incineration treatment device. Background technique [0002] Sludge is the solid residue after sewage treatment, and the amount of sludge accounts for about 1‰ of the sewage treatment volume (calculated with a water content of 80%). With the continuous construction of sewage treatment plants, the amount of industrial and domestic sewage treatment in my country is increasing rapidly, and more sludge will be produced. The composition of sludge is very complex. In addition to a large amount of water, it also contains a large amount of organic matter, refractory organic matter, various trace elements, pathogenic microorganisms, parasite eggs, and heavy metals. How to make harmless and resourceful sludge with huge output and complex components has become one of the topics that the world's environmental circles have focused on. [0003] The sludge treatment method centered on inci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/14
Inventor 吕清刚高鸣朱建国李诗媛王东宇那永洁贺军矫维红
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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