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Method for treating combustible waste

A treatment method and waste technology, applied in the field of combustible waste treatment, can solve the problems of limited use of activated carbon, inability to treat with water, heavy metal smelting, etc.

Inactive Publication Date: 2002-09-04
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current situation is that the use of activated carbon obtained from this is limited because combustible wastes including RDF contain impurities, such as chlorine, ash, heavy metals, etc.
That is, even if the chlorine is removed during the dry distillation process, the activated carbon still contains ash and heavy metals in the ash, so there is a problem of smelting heavy metals, and it cannot be used for water treatment.
In addition, the properties of combustible waste as the initial raw material are various, such as pulverization in the dry distillation process, and the shape of the obtained activated carbon is not uniform, which is also one of the reasons for limiting its use.

Method used

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  • Method for treating combustible waste
  • Method for treating combustible waste
  • Method for treating combustible waste

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Used paper (moisture content 15%, ash content 5%, and combustible content 80%) was used as combustible waste. use this old paper figure 1 The electric tube furnace retort shown. exist figure 1 Among them, 1 is a quartz glass tube, 2 is an electric heater, 3 is a thermocouple, 4 is nitrogen, 5 is exhaust gas from dry distillation, 6 is combustible waste, and 7 is a temperature controller. Put the combustible waste (old paper) 6 into the electric heater 2, feed nitrogen 4 at 50ml / min, make the carbonization temperature rise to 1000°C with a heating rate of 10°C / min, and carry out the carbonization treatment for 10 minutes. The temperature is measured with a thermocouple 3 and controlled with a temperature controller 7 . The yield rate of the obtained dry distillation carbide is 22%, the ash content and volatile components measured by JISM8812 are 33% and 3.5% respectively, and the specific surface area measured by BET method is 215m 2 / g. (Example 2)

Embodiment 2

[0060] Sewage sludge (72.9% of water content, 14.7% of ash content, and 12.4% of combustible components) was used as combustible waste. A dry distillate was obtained in exactly the same manner as in Example 1, except that the dry distillation temperature was 1100°C. The yield rate of the obtained dry distillation carbide is 18%, the ash and volatile components measured by JISM8812 are 72% and 0.6% respectively, and the specific surface area measured by BET method is 73m 2 / g. (Example 3)

Embodiment 3

[0061] With 100 parts of combustible waste, add 50 parts by weight of lignite (moisture content 15%, ash content 3.1%, combustible component 81.9%), obtain dry distillate with the method identical with embodiment 2 except this. The yield rate of the obtained dry distillation carbide is 24.7%, the ash and volatile components measured by JIS M8812 are 49% and 0.5% respectively, and the specific surface area measured by the BET method is 149m 2 / g. (Example 4)

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Abstract

The treatment method of combustible waste is the process of carbonizing the combustible waste to obtain carbonized carbide and combustible gas, and blowing the carbonized carbon into the exhaust gas in the process in order to purify the exhaust gas in the process. The process consists of the process of using the dust collector to recover the dry distillation carbides in the exhaust gas during the process. Dry distillation must be carried out at least at a temperature above 400°C.

Description

technical field [0001] The present invention relates to a method for treating combustible waste. Specifically, it relates to a method of disposing of combustible waste without generating harmful substances such as HCl and dioxin. Background technique [0002] Currently, combustible wastes are generally effectively utilized as fuel for boilers, raw materials for cement, and fuel for power generation, or disposed of in landfills. In addition, there is solidified refuse fuel (RDF: Refuse Derived Fuel) known as a special form of combustible waste. Solidified garbage fuel is solidified garbage that uses combustible garbage as fuel resources and can be reused. It may replace fossil fuels in terms of its storage performance, transportation performance and stability of properties. It is being studied as boiler fuel, It is used as a raw material for cement, fuel for power generation, and the like. [0003] However, the presence of chlorine in combustible waste including RDF reduce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/74B01J20/20C10B53/00C10B57/02C10L5/46
CPCB01D53/74B01J20/20B01J20/3078C10B53/00C10B57/02C10L5/46Y02E50/10Y02E50/30C10B57/16
Inventor 上野一郎冈田敏彦有山达郎庵屋敷孝思六川庄一石井纯
Owner JFE STEEL CORP