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biomass carbonization plant

carbonization plant for activated carbon making

Capacity: 8-30t/d

Application: apply for coal activated carbon and nut shell activated carbon from high-quality coal, sawdust, nutshell, coconut shell, and other materials.

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advanced technique

we own individual techniques in the carbonization process for activated carbon making.

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integrated service involving technologies and funds required for projects.

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200+ successful cases of activated carbon production have been built around the world.

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full set of manufacturing equipment for activated carbon making machines.

what is carbonization plant?

The carbonization process is a necessary section of activated carbon production line. The carbonization process is to isolate the raw materials from the air and heat them to reduce non-carbon elements and produce carbonaceous materials suitable for the activation process. The carbonization process is the main preparation and foundation before the activation process.

Raw materials of carbonization process: there are many raw materials for carbonization, mainly including wood materials, fuel wood, forest harvesting residues, miscellaneous wood, wood processing factory residues, sawdust, husks, fruit pits, and tree roots can be carbonized. Except for sawdust which is granular, other raw materials are mostly lumps, which meet the requirements of most carbonization furnaces or carbonization kilns.

activated carbon Carbonization process

The activated carbon carbonization process is actually the dry distillation process of the material under low-temperature conditions. The material undergoes a series of complex physical and chemical changes under specific conditions. Ultimately, the purpose of carbonization is to form a secondary pore structure that is easily activated and imparts the mechanical strength required to withstand activation.

Material flow: The wood or nutshell is lifted by the conveyor into the charging chamber of the carbonization kiln, fed into the drum of the carbonization kiln by the action of the feeder, and brought to the copying board along the spiral movement in the drum, and the cylinder transfers the carbonization needs. After the first half of the preheating and drying stage, it enters the carbonization stage at 350-550 °C. During this process, the carbon particles are in contact with the heat to carbonize, discharge moisture and volatile matter, and finally discharge through the discharge port.

Gas flow: After the volatile gas generated by the carbonization kiln is burned in the combustion chamber, the cylinder wall of the rotary kiln is heated, and the flue gas after heat exchange is discharged from the chimney.

carbonisation process

Note: AGICO CEMENT offers two typical processes of carbonization plant to clients: the process of external thermal biomass carbonization plant and the process of internal thermal biomass carbonization plant. Every client can choose a suitable process according to their real needs.

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Carbonization equipment

A complete carbonization plant has to be equipped with a series of carbonization equipment, which is mainly composed of a silo, a hoist, a feeder, a continuous carbonization kiln, a refractory material, a rotating device, a temperature measuring device, a PLC control cabinet, a cooling device, a settling chamber, a fan, and a dust removal device. The carbonization kiln is definitely the core part of all carbonization equipment, it is where the carbonization process takes place.

Carbonization process
carbonization kiln

The continuous carbonization kiln, is composed of four major parts: feeder, carbonization kiln, flue gas purification system and cooling machine.

When the continuous carbonization kiln is running, the material is fed into the carbonization furnace through the feeder, because the carbonization kiln is almost a closed space, which satisfies the condition of less oxygen, so that the material is dry distilled at a high temperature of more than 600 degrees inside the carbonization machine, and carbonization occurs. The carbonized material passes through the carbonization machine to generate flue gas. After the flue gas purification system filter, the gas impurities such as wood tar fume, carbonized material is returned to the carbonization kiln for combustion, so that the thermal energy of the machine can run continuously, achieving the effect of smoke-free, environmental protection, and continuous. Finally, the finished charcoal is transported by the cooler to cool down, so that the temperature of the charcoal is only 50-80 degrees when it comes out. It is also possible to add mist spray equipment to cool the charcoal for a second time, so as to achieve the goal of completely eliminating the fire source.

ModelsCapacity(t/d)Heat exhaustion
1.9m* 10m8-10Self-balancing of material without thermal energy
2.2m* 10m13-16
2.6m* 10m18-15
table1: carbonization kiln
MaterialsHard wood materialinduced draft fanPower: 40KW, air volume of 35000 ㎡/h, wind pressure: 2590MP
Raw materialsMoisture <15%, particle size:1-20cm, ash content<3%Feed wayhoist or screw feeder
Finished carbonized materialMoisture <1%, ash content<5%, volatile component:15-18%, particle size:1-10cm, iodine sorption value: 120-200mg/gCarbonization conditionsoxygen-poor carbonization
gas compositionWater, carbon dioxide, and carbohydrates
out-feeding temperature350-400℃dusting methodCyclone collector, bag filter, spray device
temperature behind the cooler<50℃Cooling methodConverter natural cooling tube, external cooling water bath converter
Power<100kwEquipment materialQ345
quantity of steam1.5-3t/hRefractory materialssteel fiber reinforced castable, high alumina refractory brick
steam pressure5kgInsulation thickness>40cm
steam flow1.6-2.3t/hAluminum content of resistant material>45%
flue gas temperature at inlet600-800℃ maximum temperature of resistant material>1300℃
 Furnace temperature<660℃gas amount15,000 m3/h
Flue gas incinerator temperature800-960℃temperature sensing thermocoupleUnit:6,  Heat-resistant: 1200℃
table2: carbonization equipment parameter

highlights of carbonization Furnace

Good compatibility and wide application

It can be applied to a variety of biomass raw materials, which can be used for woodblock material, fruit stone material, powder material, and continuous carbonization of granular material and scrap material, with small limitations and high compatibility.

Smokeless carbonization design

Adopting a new innovative structure, the combustion exhaust gas can be discharged up to the standard, and the combustion flue gas can be fully utilized to achieve smokeless carbonization during the operation process.

Continuous operation, large-scale production

The continuous carbonization furnace overcomes the disadvantages of the traditional batch carbonization furnace, and through innovation, it can carry out efficient continuous production.

Low energy consumption, green production

The production process of carbon/gas/oil co-production is realized, and the traditional defects of high energy consumption/large pollution/low efficiency are solved. In the carbonization process, tar/wood vinegar and combustible gas are all recovered by equipment and reused.

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