| Customization: | Available |
|---|---|
| After-sales Service: | One Year |
| Warranty: | One Year |
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At present, various enterprises using activated carbon generate a large amount of waste activated carbon every year. According to incomplete statistics, at least tens of millions of tons of waste activated carbon are produced, with less than 20% being reused. Most of it is disposed of as garbage by incineration, which not only wastes resources but also causes greater pollution to the environment. Humanity faces the dual pressures of natural resource scarcity and solid waste environmental pollution, threatening human survival and livelihood. In response to the easy reusability of spent activated carbon, our factory has adopted a new process using thermal regeneration technology, which can save activated carbon resources and reduce secondary pollution, thereby achieving significant social and economic benefits and having broad market prospects.
Raw Material Unpacking: Used saturated activated carbon collected is mechanically and automatically unpacked and stored in a dust-free unpacking and unloading machine. The unpacking operation takes place in a sealed and negative pressure space. The main pollutants generated in this process are dust and organic waste gas. The unpacking and unloading machine is equipped with a built-in bag filter to prevent dust from escaping, while the waste gas is directed into a gas collection pipe through a pipeline.
Feeding Equipment: Waste activated carbon is transported to the silo by a conveyor and then pushed into the regeneration kiln by a screw.
The activated carbon powder goes through several stages in the regeneration kiln:
1. Drying Stage: Heating waste activated carbon with a moisture content of 20-60% to evaporate the absorbed water within the carbon particles, along with the simultaneous volatilization of some low-boiling-point organic compounds.
2.Carbonization Stage: The carbon particles are heated to around 850°C. As the temperature increases, different organic substances are eliminated from the activated carbon matrix through processes such as volatilization, decomposition, carbonization, and oxidation.
3. Activation Stage: After high-temperature carbonization of organic substances, a considerable portion of carbonized material remains in the micropores of the activated carbon. At this stage, an activating agent is used to carry out gasification reactions, converting the residual carbonized material at around 850-900°C into gases such as hydrogen and carbon monoxide, thereby cleaning the surface of the activated carbon micropores and restoring their adsorption performance. Specific reaction equations are as follows: C+H2O=CO+H2 2CO+O2=2CO2 2H2+O2=2H2O C+CO2=2CO Cooling and Conveying of Finished Products: After undergoing regeneration in the continuous furnace, the waste activated carbon enters the cooling equipment and is cooled indirectly, with the temperature dropping below 40°C.
Product Treatment: The activated carbon is sieved, ground, homogenized, and packaged.
Waste Gas Treatment: Harmful substances in the waste gas can be removed through secondary combustion, SNCR (selective non-catalytic reduction), waste heat boiler, rapid cooling, dry acid gas removal, pulse dust removal, wet acid gas removal, and defogging, among other treatments.
Applicable materials: used coconut shell activated carbon, powdered activated carbon, columnar activated carbon, coal-based activated carbon, etc.
| Raw material |
Coconut shell/nut shell/cylindrical activated carbon |
Powdered activated carbon |
|
Capacity |
5-20t/d |
3-10t/d |
|
preprocessing |
Screening and impurity removal |
Screening and impurity removal |
|
Regeneration kiln heating method |
Internal heating/external heating |
external heating |
|
Regeneration carbon rate |
80-90% |
50-65% |
|
Particle size requirements |
1-10mm |
0-1mm |
|
fuel |
natural gas/oil |
|
|
Regeneration effect (compared with original activated carbon) |
50-100% |
|
|
Regeneration temperature |
800-950ºC |
|
|
Finished product cooling method |
Indirect water cooling |
|
|
Activator |
Water vapor/flue gas |
|
|
Waste gas treatment process |
Secondary combustion, SNCR, waste heat boiler, quenching, dry deacidification, pulse dust removal, wet deacidification, defogging, etc. |
|
|
Reproduction cost |
60-140 USD/T |
140-200USD/T |
1.Wide Range of Applications: Can handle powdered activated carbon, granular activated carbon, cylindrical activated carbon, honeycomb activated carbon, shaped activated carbon, and more.
2.High Regeneration Efficiency: 60-100%. Through secondary activation, not only are the micropores of the waste activated carbon reactivated, but new micropores can also be activated to restore and enhance the adsorption performance of the activated carbon.
3.High Economic Benefits: Higher heat utilization rate, heat recovery rate, and the use of minimal fuel consumption to achieve activated carbon regeneration.
4.High Automation Level: The entire set of equipment adopts PLC (programmable logic controller) for automatic control, with sensors installed at multiple process points on the production line to ensure safety. The process parameters of the equipment can be automatically adjusted via PLC, providing flexibility. The entire production line requires minimal manual labor.
5.Large Output: 1-20t/d.
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