Question 1

What is the difference between activation furnace and carbonization furnace?

Accepted Answer

A carbonization furnace pyrolyzes raw materials into charcoal under oxygen-deficient conditions (first stage); an activation furnace reacts the charcoal with steam at high temperature to develop pores and produce activated carbon (second stage). They work together: carbonization first, then activation.

Question 2

What feedstocks suit the rotary activation furnace?

Accepted Answer

The rotary activation furnace accepts a wide particle size range and suits continuous activation of coal-based, wood-based and shell charcoals, especially for large-scale production.

Question 3

How to choose between Slep furnace and rotary furnace?

Accepted Answer

Choose the Slep furnace for high-iodine shell-based granular carbon with low steam cost; choose the rotary furnace for continuous, high-capacity production with mixed feedstocks. We can provide investment and energy comparison.

Question 4

What equipment is needed for a new activated carbon line?

Accepted Answer

Mainly: crushing & screening, carbonization furnace, activation furnace, combustion & heating system, dedusting & desulfurization system, and finished product screening & packaging. We offer turnkey solutions.

Question 5

What if my old activation furnace consumes too much energy?

Accepted Answer

Retrofit options include insulation upgrade, combustion system retrofit, waste heat recovery and automation upgrade, which usually cut energy consumption notably. We provide on-site diagnosis.

Question 6

How often should furnace refractories be replaced?

Accepted Answer

Depending on furnace type and operation, activation-zone refractories typically need inspection or partial replacement every 1-3 years. Regular inspection and proper drying extend life. We offer inspection and replacement services.

Question 7

How to select a rotary activation furnace?

Accepted Answer

Selection should match raw material type (coal, wood, coconut/shell), target iodine value and capacity, and align activation temperature window and residence time. Supply raw material samples and target specs for a process validation by the manufacturer.

Question 8

What is the difference between a rotary furnace and a Sleipner (pit) furnace?

Accepted Answer

A rotary furnace feeds continuously, offers large capacity and controlled energy use, suited to mass production; a Sleipner furnace suits batch/semi-continuous, small-batch, high-uniformity fine activation. Choice depends on capacity and product positioning.

Question 9

What capacity and iodine value can a rotary activation furnace achieve?

Accepted Answer

Capacity and iodine value depend on raw material and process; commit to figures only after sample testing and process validation.

Question 10

How are carbonization and activation furnaces combined into a production line?

Accepted Answer

Raw material is first carbonized into char, then activated in the activation furnace. The two stages link in series with matched heat and atmosphere, forming a complete continuous line with exhaust and waste-heat systems.

Question 11

What drives activation furnace running costs?

Accepted Answer

Fuel consumption, activation medium usage, heat recovery efficiency and lining life are key factors. Henan Songrui produces its own refractory lining and provides waste-heat recovery to lower long-term costs.

Frequently Asked Questions

Frequently Asked Questions