Activated carbon making machine

Xuye’s externally heated activated carbon making machine boasts stable system operation, a high degree of automation, and meets emission standards after combustion. The resulting biochar is of considerable value. The entire system features high carbonization efficiency, a long service life, high production efficiency, and a smokeless, environmentally friendly design. It can operate in a 24-hour continuous cycle, eliminating the shortcomings of traditional activated carbon production equipment, which suffer from low efficiency, high failure rates, high pollution, and high energy consumption.

Environmental Protection Technology For environmentally friendly activated carbon kiln, carbonization flue gas treatment is crucial. During the carbonization process, the flue gas generated in Xuye’s externally heated activated carbon production line is treated by a flue gas purification system, transforming it into a pure, combustible gas that is then passed into the bottom of the carbonization furnace for combustion, completing the carbonization process. This utilizes waste resources while eliminating flue gas pollution and damage to the environment.

Activated carbon making machine technical principle

The material is continuously fed into the rotary kiln through a feed system and rotates within the furnace, achieving dynamic and uniform heating, avoiding the production bottlenecks associated with traditional batch processes.
At high temperatures (typically 800–950°C), water vapor reacts with the carbon material (C + H₂O → CO + H₂), expanding the pore structure and forming activated carbon with a high specific surface area. Steam as an activation agent is environmentally friendly and controllable.

Activated carbon making machine Process Flow

1.Feeding
Pretreated raw materials are continuously fed into the rotary kiln’s feed port via a specialized feeding device. This device, typically a screw feeder or other device, precisely controls the feed rate and amount, ensuring uniform distribution and a stable supply of material within the furnace.

In the preheating zone, the material gradually heats up through heat exchange with the hot flue gases or heating elements within the furnace, preparing for the subsequent activation reaction.

2.Preheating
Heating and Activation
Heating and Rising Zone

Temperature Range: 800-1050°C

Steam Activation Zone

Core Reaction Zone: The temperature is raised to a specified temperature, and superheated steam (pressure 0.1–0.4 MPa) is introduced.

3.Activation Reaction

C + H₂O → CO + H₂ (endothermic reaction)
C + H₂O → CO + H₂ (endothermic reaction)
The steam selectively oxidizes the carbon, expanding the microporous structure, resulting in an iodine value of 1700 mg/g and a specific surface area of 1500 m²/g.

Dynamic Contact: The rotary kiln rotates (1–5 rpm) to tumble the material, ensuring uniform and thorough steam contact.

The activated material enters the cooling zone. Within this zone, cool air is introduced into the furnace or other cooling methods are used to rapidly cool the material, preventing overreaction or degradation of product performance.

4.Cooling
Discharge
The activated carbon is discharged through a water-cooled screw discharger to prevent spontaneous combustion of the high-temperature material upon contact with air.

Activated carbon making machine Structural Features

1.Furnace Design
The furnace body features a double-layered shell with a central fan, enabling rapid temperature changes and effectively reducing the shell surface temperature, minimizing heat loss. Furnace tubes are typically constructed of high-quality heat-resistant metals, such as 310S alloy, offering excellent high-temperature and corrosion resistance.

2.Heating System
Equipped with advanced heating devices, such as electric heating wires, the heating power can be adjusted according to production needs. High temperature control precision ensures uniform and stable furnace temperatures, meeting the activation process requirements of different materials.

3.Sealing Device
Reliable sealing structures, such as mechanical seals or stainless steel flange seals, are employed at both ends of the furnace body to prevent gas leakage and maintain a stable activation atmosphere.

4.Drive System
Comprising a rotary motor and a reducer, the gear transmission drives the furnace body at an appropriate speed, ensuring uniform heating and sufficient reaction within the furnace.

5.Feeding and Discharging System
Utilizing specialized feeders and dischargers, the system enables continuous and stable material feeding and discharging, ensuring a continuous production process.

Exhaust gas treatment: Unreacted steam and volatile substances are recovered through combustion or condensation, meeting environmental protection requirements.

Activated carbon making machine video

Activated carbon making machine parameter：

capacity	5-8t/d	8-10t/d	10-12t/d	12-15t/d	15-20t/d
Dryer model	HG-800	HG-1000	HG-1200	HG-1500	HG-1800
Dryer power	3kw	4kw	7.5kw	15kw	22kw
continuous carbonization furnace model	TH-1500	TH-1500	TH-1800	TH-2000	TH-2000
Carbonization temperature	600-850℃
Fixed carbon content after carbonization	70-80%
Carbonization furnace drum material	309S/310S	309S/310S	309S/310S	309S/310S	309S/310S
Activation furnace model	HN-5	HN-8	HN-10	HN-12	HN-15
Activation furnace power	15kw	22kw	30kw	37kw	37kw
Activation furnace chamber material	QQ345+nano thermal insulation board+refractory
Activation temperature	850-950℃
Activator	Water vapor or Phosphoric acid (customized according to customer requirements, equipment design will be updated)
Activation time	1-2h
Cooling machine model	GTL-1004	GTL-1204	GTL-1206	GTL-1504	GTL-1506
Temperature after cooling	≤40℃
Activated carbon crusher model	SGP-400	SGP-400	SGP-600	SGP-800	SGP-800
Activated carbon finished product size	4-60mesh
Activated carbon iodine value	800-1300mg/g
Activated carbon specific surface area	800-1500m²/g
Activated carbon strength	≥95
CTC	≥60%
Filling density	0.45-0.55g/cm3
Activated carbon ash	≤3%

FAQ

Frequently asked questions about activated carbon making machine

The difference between external heating and internal heating activation furnace？

• Externally heated furnaces are suitable for a variety of raw materials.
• Internally heated furnaces offer high throughput and are relatively inexpensive, but are not suitable for particularly light raw materials.

How long can the carbonization furnace and activation furnace operate continuously？

• The carbonization equipment and activation equipment designed by Xuye can operate continuously for more than 30 days.

Under what circumstances do the carbonization furnace and activation furnace need to be shut down？

• It only takes half a day to add or replace lubricating oil for equipment.
• Some equipment’s wearing parts have reached the end of their service life. Depending on the number of wearing parts to be replaced, it will take about 0.5-2 days.

Can coal be used as fuel for the activation furnace？

• No. Because the flames need to burn in the furnace, burning coal will produce ash.
• The calorific value of coal is less stable than that of natural gas (different batches of coal have different calorific values).