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Device and method for preparing active coke by pyrolysis of domestic waste

A technology for household waste and active coke, which is applied in lighting and heating equipment, chemical instruments and methods, coke ovens, etc. Pyrolysis time, reduction of pollution sources, uniform heating effect

Active Publication Date: 2019-07-19
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the components of domestic waste are complex and different, and there is interaction with each other; the high water content leads to high energy consumption of direct microwave pyrolysis; the difficulty of continuous pyrolysis operation of the device, etc., all of which need to be considered in the process of microwave pyrolysis of waste question

Method used

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  • Device and method for preparing active coke by pyrolysis of domestic waste
  • Device and method for preparing active coke by pyrolysis of domestic waste
  • Device and method for preparing active coke by pyrolysis of domestic waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Domestic waste enters the drying rotary kiln. Under the action of flue gas and the rotation of the rotary kiln, the dried domestic waste gradually moves to the discharge port. The slope of the drying rotary kiln is set to 0.02, the speed is set to 5r / min, and the exhaust gas enters the The flue gas purification tower is discharged from the chimney by the induced draft fan after a series of treatments. Dry domestic waste enters the microwave pyrolysis furnace through the feed port. The microwave pyrolysis furnace is equipped with 2 microwave generators, and the power density of the microwave generators is 3×10 5 W / m 3 , Garbage is pyrolyzed under the action of microwave heating, and the temperature is controlled at 300°C. At the same time, under the crushing and disturbance of the stirring plate, the pyrolysis coke with small particle size enters the storage chamber through the sieve plate, and the rotating speed of the stirring plate is set at 5r / min. The pyrolysis ga...

Embodiment 2

[0036] Domestic waste enters the drying rotary kiln. Under the action of the flue gas and the rotation of the rotary kiln, the dried domestic waste gradually moves to the discharge port. The slope of the drying rotary kiln is set to 0.03, the speed is set to 8r / min, and the exhaust gas enters the The flue gas purification tower is discharged from the chimney by the induced draft fan after a series of treatments. Dry domestic waste enters the microwave pyrolysis furnace through the feed port. The microwave pyrolysis furnace is equipped with 2 microwave generators, and the power density of the microwave generators is 5×10 5 W / m 3 , Garbage is pyrolyzed under the action of microwave heating, and the temperature is controlled at 350°C. At the same time, under the crushing and disturbance of the stirring plate, the pyrolysis coke with small particle size enters the storage chamber through the sieve plate, and the rotating speed of the stirring plate is set at 7r / min. The pyrolysi...

Embodiment 3

[0038] Domestic waste enters the drying rotary kiln. Under the action of the flue gas and the rotation of the rotary kiln, the dried domestic waste gradually moves to the discharge port. The slope of the drying rotary kiln is set to 0.03, the speed is set to 8r / min, and the exhaust gas enters the The flue gas purification tower is discharged from the chimney by the induced draft fan after a series of treatments. Dry domestic waste enters the microwave pyrolysis furnace through the feed port. The microwave pyrolysis furnace is equipped with 2 microwave generators, and the power density of the microwave generators is 5×10 5 W / m 3 , Garbage is pyrolyzed under the action of microwave heating, and the temperature is controlled at 350°C. At the same time, under the crushing and disturbance of the stirring plate, the pyrolysis coke with small particle size enters the storage chamber through the sieve plate, and the rotating speed of the stirring plate is set at 7r / min. The pyrolysi...

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Abstract

The invention discloses a device and method for preparing activated coke by pyrolysis of domestic waste. The device mainly comprises a drying rotary kiln, a microwave pyrolysis furnace, a pyrolysis gas combustion chamber, an air preheater, a steam generator, a coke sample activation furnace and a flue gas purification tower; the drying rotary kiln is connected with the microwave pyrolysis furnace,and a flue gas outlet is connected with the flue gas purification tower, an induced draft fan and a chimney through a pipeline; the microwave pyrolysis furnace is connected with the induced draft fanand the pyrolysis gas combustion chamber through a pipeline, a flue gas outlet of the pyrolysis gas combustion chamber is connected with the air preheater, one way of the air preheater is connected with a hot-air inlet of the pyrolysis gas combustion chamber, and the other way is connected with the drying rotary kiln; and a storage chamber is connected with the coke sample activation furnace, a flue gas outlet of the coke sample activation furnace is connected with the microwave pyrolysis furnace through a gas bypass, and the coke sample activation furnace is connected with the steam generator. The device provided by the invention is adopted to pyrolyze the domestic waste, the efficiency is high, and emission is concentrated; and the device can further prepare high-quality activated cokeand complete large-scale treatment of the domestic waste.

Description

technical field [0001] The invention relates to the technical field of domestic waste treatment and reuse, in particular to a device and method for preparing active coke by pyrolyzing domestic waste. Background technique [0002] The deep sorting of domestic waste will gradually become an important link in the process of domestic waste treatment and disposal in my country, and it will also be conducive to the energy utilization of domestic waste. The sorted garbage mainly includes biomass components such as paper, fabrics, wood and bamboo, and polymer components such as plastics and rubber. However, the large volume of domestic waste and the high cost of long-distance transportation have seriously restricted the centralized and energy-based treatment and disposal of domestic waste in small towns and rural areas. [0003] Pyrolysis technology can quickly degrade domestic waste "in situ", simultaneously realize the homogeneity of complex components and increase the energy den...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/39C01B32/336C01B32/324F23J15/06C10B53/00
CPCY02P20/129
Inventor 胡红云章鹏超姚洪刘欢杨宇涵许勉申俊豪唐华
Owner HUAZHONG UNIV OF SCI & TECH
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