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Incineration and drying integrated treatment process of hazardous wastes

A technology of hazardous waste and treatment process, which is applied in the field of incineration and drying treatment system of hazardous waste, which can solve the problems of energy waste and high cost, achieve good effect, low moisture content, and realize the effect of resource utilization

Inactive Publication Date: 2018-03-13
苏州浩长空环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (3) Restricting sustainable development
Obviously, the cost of landfilling the hazardous waste slag processed through the rotary kiln is high, and the traditional rotary kiln incineration treatment also causes serious energy waste

Method used

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  • Incineration and drying integrated treatment process of hazardous wastes
  • Incineration and drying integrated treatment process of hazardous wastes
  • Incineration and drying integrated treatment process of hazardous wastes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0036] Embodiment 2: as the preferred scheme of embodiment 1, such as figure 2 As shown, the drying rotary kiln 34 includes a kiln body 341, a roller screw conveying device installed in the kiln body 341, and a steam jacket 342 wrapped around the outer periphery of the kiln body 341. The steam inlet of the steam jacket 342 and the steam of the waste heat boiler 23 The outlet is connected. The present invention adopts indirect drying, that is, a layer of steam jacket 342 is wrapped on the outside of the rotary kiln, steam is passed through the steam jacket 342, and slag with high moisture content is discharged in the kiln, and the slag is dried to a moisture content of less than 5%. Compared with the original slag, which has a moisture content of about 40-50%, the reduction is about 40%, which greatly saves costs. At the same time, the resource utilization of boiler steam is realized, and the waste gas generated enters the secondary combustion chamber for treatment, without in...

Embodiment 3

[0037]Embodiment 3: As a preferred solution of Embodiment 2, the roller screw conveying device includes a roller 343 movably installed in the kiln body 341, a spiral conveying blade 344 installed on the outer periphery of the roller 343, and the two ends of the roller 343 respectively have tapered inlet ends 345 and the tapered outlet end 346. Between the outer wall of the drum 343 and the inner wall of the kiln body 341, there is an annular compartment where the spiral conveying blade 344 can be installed. The slag is introduced into the compartment through the tapered inlet 345, and after drying, it is exported from the tapered outlet 346. . The present invention adopts the method of annular compartments to slowly push the slag from one end of the drum 343 to the other end through the spiral conveying blade 344, which has a large dispersion area and excellent drying effect.

Embodiment 4

[0038] Embodiment 4: As a preferred solution of Embodiment 3, the drum 343 is a hollow structure, the tapered inlet end 345 is equipped with a steam inlet pipe 347 leading into the inner chamber of the drum, and the tapered outlet end 346 is equipped with a condensing pipe leading into the inner chamber of the drum. Water outlet pipe 348. Hot steam is passed into the inner cavity of the drum 343, and the hot steam in the steam jacket 342 heats the drum 343 internally and externally, thereby improving the drying effect of the slag.

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Abstract

The invention relates to an incineration and drying integrated treatment process of hazardous wastes. According to the incineration and drying integrated treatment process of the hazardous wastes, a hazardous waste pretreatment system, an incineration system and a drying system are included; the hazardous waste pretreatment system comprises a pretreatment flushing area, an analyzing and identification area and a hazardous waste storage area which are connected sequentially; the incineration system comprises an incineration rotary kiln, a secondary combustion chamber, a waste heat boiler, a bag-type dust remover, a scrubbing tower and a chimney which are connected sequentially; and the drying system comprises a furnace slag transition storage device, a water-seal cooling and temperature-reducing dedusting device, a slag remover, a drying rotary kiln, a shredding machine and a drying cleaning device which are connected sequentially. According to the incineration and drying integrated treatment process of the hazardous wastes, incinerated hazardous waste furnace slag is dried and then treated, the dried and treated furnace slag is low in moisture content, the reuse rate is greatly increased, the cost is greatly saved, meanwhile, resource utilization of boiler steam is realized, and co-processing is realized.

Description

technical field [0001] The invention relates to the technical field of waste incineration treatment, in particular to an incineration and drying treatment system for hazardous waste. Background technique [0002] With the development of industry, the hazardous waste discharged from industrial production process is increasing day by day. It is estimated that 330 million tons of hazardous waste are generated worldwide each year. Due to the serious pollution and potential serious impact of hazardous waste, hazardous waste has been called "political waste" in industrially developed countries. The public is very sensitive to the problem of hazardous waste and opposes the establishment of hazardous waste disposal sites in the areas where they live. Disposal of hazardous waste is expensive, and some companies try to transfer hazardous waste to industrially underdeveloped countries and regions. [0003] The hazards of hazardous waste mainly include the following points: [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/02F23G5/16F23G5/20F23G5/46F23G7/00F23J15/04F23J1/06
CPCF23G5/02F23G5/16F23G5/20F23G5/46F23G7/00F23G2201/60F23G2203/20F23G2206/201F23J1/06F23J15/04Y02E20/30
Inventor 张益史梦君
Owner 苏州浩长空环保科技有限公司
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