AU2018101655A4 - A method of regenerating activated carbon - Google Patents
A method of regenerating activated carbon Download PDFInfo
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- AU2018101655A4 AU2018101655A4 AU2018101655A AU2018101655A AU2018101655A4 AU 2018101655 A4 AU2018101655 A4 AU 2018101655A4 AU 2018101655 A AU2018101655 A AU 2018101655A AU 2018101655 A AU2018101655 A AU 2018101655A AU 2018101655 A4 AU2018101655 A4 AU 2018101655A4
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- activated carbon
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- high temperature
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Abstract
The invention provides a method of regenerating activated carbon, comprising the steps: a. placing waste activated carbon in a stainless steel storage tank, and extracting gas in the storage tank using a vacuum pump to make the storage tank negatively pressurized inside; b. placing waste activated carbon with a moisture content of 30-40% into a digital control high temperature smoldering furnace and heating for 2-4 hours at a temperature of 100-120'C; c. controlling the digital control high temperature smoldering furnace to gradually heat to a temperature of 700-850'C within 3-4 hours; d. introducing oxidizing gas into the digital control high temperature smoldering furnace to carry out a gasification reaction, controlling the temperature at 800-850 C, maintaining for 5-7 hours to obtain activated carbon.
Description
A METHOD OF REGENERATING ACTIVATED CARBON
TECHNICAL FIELD
The invention relates to a method of regenerating activated carbon.
BACKGROUND
The traditional method of regenerating activated carbon is performed by manually disposing the waste activated carbon in a clay tank, moving it to the earth kiln for heating and regeneration, and heating it from a temperature of 30 °C to 900 °C with wood. After heated at a constant temperature for 18 hours, it is directly sprayed with water to cool down to 30 °C, manually moved out, and screened using a screening machine. The traditional method of regenerating activated carbon may cause serious pollution, high labor cost, high energy consumption, low and unstable quality of activated carbon.
Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field.
It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.
SUMMARY
The invention is to solve the technical problem that the method of regenerating activated carbon of prior art may cause high energy consumption, high labor cost, low and unstable quality for activated carbon, so as to provide a method of regenerating activated carbon that causes low energy consumption, and achieve environmental protection and may produce high quality activated carbon.
SPECIFICATION
2018101655 05 Nov 2018
Thus, the invention provides a method of regenerating activated carbon, comprising the steps:
a. placing waste activated carbon in a stainless steel storage tank, and extracting gas in the storage tank using a vacuum pump to make the storage tank negatively pressurized inside;
b. placing waste activated carbon with a moisture content of 30-40% into a digital control high temperature smoldering furnace and heating for 2-4 hours at a temperature of 100-120°C;
c. controlling the digital control high temperature smoldering furnace to gradually heat to a temperature of 700-850°Cwithin 3-4 hours;
d. introducing oxidizing gas into the digital control high temperature smoldering furnace to carry out a gasification reaction, controlling the temperature at 800-850 °C, maintaining for 5-7 hours to obtain activated carbon, and re-introducing high temperature exhaust gas generated into the furnace for performing the step b;
e. cooling the activated carbon for 5-7 hours to a temperature of 30 °C through a water cooling treatment system;
f. decontaminating and classifying the activated carbon after cooling, using an air flow conveyor, a classifier, a cyclone collector, a pulse collector and a carbon mixer respectively;
g. packing the classified activated carbon after being vacuum-compressed;
wherein, 40-60% of low temperature exhaust gas generated in step b is introduced into a roasting section and an activation section for roasting and activation, and the remaining part of the low temperature exhaust gas is introduced into the a exhaust gas treatment system; and
SPECIFICATION
2018101655 05 Nov 2018 heat generated by the exhaust gas treatment system through high temperature combustion and the water cooling treatment system is led back to step b or c or d for preheating.
Unless the context clearly requires otherwise, throughout the description and the claims, the words ‘comprise’, ‘comprising’, and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of ‘including, but not limited to’.
In the method of regenerating activated carbon of embodiments of the invention, the temperature in step b is 105-110°C and duration for heating is 2.5-3.5 hours.
In the method of regenerating activated carbon of embodiments of the invention, the digital control high temperature smoldering furnace is controlled to gradually heat to 800 °C within 3.5 hours.
The invention has the following technical advantages compared with prior arts:
1. According to the method of regenerating activated carbon of the embodiments of the invention, the activation is performed in a high temperature smoldering furnace, so that it may achieve high level of automation, low labor cost, long energy consumption, and low pollution, and also make sure the quality and stability of activated carbon regenerated.
DETAILED DESCRIPTION OF EMBODIMENTS
The embodiments of the invention provide a method of regenerating activated carbon, comprising the steps:
a. placing waste activated carbon in a stainless steel storage tank, and extracting gas in the storage tank using a vacuum pump to make the storage tank negatively
SPECIFICATION
2018101655 05 Nov 2018 pressurized inside;
b. placing waste activated carbon with a moisture content of 30-40% into a digital control high temperature smoldering furnace and heating for 2-4 hours at a temperature of 100-120 °C ;
c. controlling the digital control high temperature smoldering furnace to gradually heat to a temperature of 700-850 °C within 3-4 hours;
d. introducing oxidizing gas into the digital control high temperature smoldering furnace to carry out a gasification reaction, controlling the temperature at 800-850 °C, maintaining for 5-7 hours to obtain activated carbon, and re-introducing high temperature exhaust gas generated into the furnace for performing the step b;
e. cooling the activated carbon for 5-7 hours to a temperature of 30 °C through a water cooling treatment system;
f. decontaminating and classifying the activated carbon after cooling, using an air flow conveyor, a classifier, a cyclone collector, a pulse collector and a carbon mixer respectively;
g. packing the classified activated carbon after being vacuum-compressed;
wherein, 40-60% of low temperature exhaust gas generated in step b is introduced into a roasting section and an activation section for roasting and activation, and the remaining part of the low temperature exhaust gas is introduced into the a exhaust gas treatment system; and heat generated by the exhaust gas treatment system through high temperature combustion and the water cooling treatment system is led back to step b or c or d for preheating.
In the method of regenerating activated carbon of embodiments of the invention, the temperature in step b is 105-110°C and duration for heating is 2.5-3.5 hours.
SPECIFICATION
2018101655 05 Nov 2018
As a preferred embodiment, in the method of regenerating activated carbon of this embodiment, the temperature in the step b is 105-110 °C, and the duration of heating is 2.5-3.5 hours; As a further preferred embodiment, the temperature in the step b is 110 °C, and the duration of heating is 3 hours.
In the method of regenerating activated carbon of embodiments of the invention, the digital control high temperature smoldering furnace is controlled to gradually heat to 800 °C within 3.5 hours.
Obviously, the above mentioned embodiments are for clearly explaining the present invention, which do not constitute undue limitation of the present invention. It is obviously to the skilled person in the art that, various modifications could be derived without departing from the spirits and the effects of the invention. And there is no need to describe all the embodiments Therefore, the modifications or alternations derived thereof are still included in the protection scope of the present invention.
Claims (3)
1. A method of regenerating activated carbon, comprising the steps:
a. placing waste activated carbon in a stainless steel storage tank, and extracting gas in the storage tank using a vacuum pump to make the storage tank negatively pressurized inside;
b. placing waste activated carbon with a moisture content of 30-40% into a digital control high temperature smoldering furnace and heating for 2-4 hours at a temperature of 100-120 °C ;
c. controlling the digital control high temperature smoldering furnace to gradually heat to a temperature of 700-850 °C within 3-4 hours;
d. introducing oxidizing gas into the digital control high temperature smoldering furnace to carry out a gasification reaction, controlling the temperature at 800-850 °C, maintaining for 5-7 hours to obtain activated carbon, and re-introducing high temperature exhaust gas generated into the furnace for performing the step b;
e. cooling the activated carbon for 5-7 hours to a temperature of 30 °C through a water cooling treatment system;
f. decontaminating and classifying the activated carbon after cooling, using an air flow conveyor, a classifier, a cyclone collector, a pulse collector and a carbon mixer respectively;
g. packing the classified activated carbon after being vacuum-compressed;
wherein, 40-60% of low temperature exhaust gas generated in step b is introduced into a roasting section and an activation section for roasting and activation, and the remaining part of the low temperature exhaust gas is introduced into the a exhaust gas treatment system; and heat generated by the exhaust gas treatment system through high temperature combustion and the water cooling treatment system is led back to step b or c or d for preheating.
2018101655 05 Nov 2018
2. The method of regenerating activated carbon of claim 1, characterized in that the temperature in step b is 105-110°C and duration for heating is 2.5-3.5 hours.
3. The method of regenerating activated carbon of claim 1 or 2, characterized in that in the step c, the digital control high temperature smoldering furnace is controlled to gradually heat to a temperature of 800 °C within 3.5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101655A AU2018101655A4 (en) | 2018-11-05 | 2018-11-05 | A method of regenerating activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101655A AU2018101655A4 (en) | 2018-11-05 | 2018-11-05 | A method of regenerating activated carbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2018101655A4 true AU2018101655A4 (en) | 2018-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2018101655A Ceased AU2018101655A4 (en) | 2018-11-05 | 2018-11-05 | A method of regenerating activated carbon |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2018101655A4 (en) |
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2018
- 2018-11-05 AU AU2018101655A patent/AU2018101655A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |