Sawdust charcoal machine

What is sawdust charcoal machine?

Sawdust charcoal machine is a kind of equipment that converts sawdust and other biomass wastes into environmentally friendly mechanism charcoal, and its core value lies in turning waste into treasure and energy recycling.

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Table of Contents

• What is sawdust charcoal machine?
• Sawdust charcoal machine introduction
• Charcoal machine working principle
• Charcoal briquetting machine advantages
• charcoal production machine
• Charcoal Industry Applications
• Charcoal machine technology development
• How to choose sawdust charcoal machine?

Sawdust charcoal machine introduction

• Sawdust charcoal machine is a kind of environmental protection equipment that converts agricultural and forestry wastes (such as sawdust, rice husk, straw, bamboo shavings, etc.) into high-density mechanism charcoal. Through high-temperature carbonization and molding process, this technology converts otherwise difficult-to-handle biomass waste into high calorific value, smokeless and tasteless clean fuels or industrial raw materials, and at the same time, it can recover high value-added by-products such as wood tar and wood vinegar liquid. Its core value lies in resource recycling and carbon neutral contribution, and has been widely used in agriculture, industry, civil fuel and environmental protection engineering fields.

Charcoal machine details

charcoal machine

Charcoal machine working principle

The core technology of the sawdust charcoal machine revolves around gasification cycle charring and automation control, which is divided into the following key stages:

• Gasification Heat Source Recirculation System

At the initial stage of equipment startup, the raw materials are ignited by external heat source (e.g. gasifier), which generates high temperature flue gas (containing flammable gases such as methane, carbon monoxide, etc.).
After the flue gas is cooled and purified by spraying, it is reintroduced into the combustion chamber as a heat source through the PLC control system, realizing a self-sufficiency rate of more than 90% in energy.

• carbonization reaction by dry distillation

Under the anoxic environment, the lignin and cellulose in the raw material undergo pyrolysis, and the temperature is controlled in segments: 160-280°C: volatile matter is removed and primary carbons are formed; 280-400°C: deep carbonization, and the carbon content is raised to more than 75%.

• Smoke-free emission design

Multi-layer purification devices (spray tower, condenser, activated carbon adsorption) are used to treat the residual flue gas to ensure that the emissions comply with international environmental standards (e.g., PM2.5 ≤ 10mg/m³)

Sawdust charcoal production site

Charcoal briquetting machine advantages

charcoal production machine

• Raw material pre-processing

Crushing: Crush the raw materials to ≤50mm particles by hammer mill (hardwoods need to be crushed to ≤3mm for the second time).
Drying: Drum drying system to reduce the moisture content to 8%-12% (too high will lead to carbonization efficiency decreased by more than 30%)

• High Pressure Molding

Adopting screw extrusion rod-making machine, compressing raw materials into hexagonal cylindrical salary rods (without binder) under 280-350℃ and 30-50MPa pressure.

• Continuous carbonization

Carbonization furnace type:
Horizontal charring furnace: suitable for small scale production, single furnace cycle 4-5 hours;
Roller type continuous carbonization furnace: 24 hours continuous operation, daily output of 3-5 tons.
Temperature control:
Heating stage: 160-280°C (volatile matter removal, lasting 1.5-2 hours);
Constant temperature stage: 280-400°C (deep carbonization, lasting 2-3 hours).

• Cooling and post-processing

After the charcoal is discharged, it is cooled down to below 50℃ by water cooling or air cooling system, and the crushed residue is removed by sieving, and the moisture content of the finished product is ≤6%.
Simultaneous recovery of wood tar (for antiseptic production) and wood vinegar liquid (for soil improvement).

Charcoal Industry Applications

Civil field: smokeless barbecue charcoal (calorific value 15% higher than traditional charcoal), heating fuel;
Industrial field: metal smelting reducing agent, raw material of activated carbon (adsorption performance increased by 30%);
Agricultural field: soil heavy metal adsorbent, organic fertilizer additive;
Environmental protection engineering: sewage treatment (wood tar recovery), waste gas purification.

Finished charcoal and use

Charcoal machine technology development

Diversification of raw materials: The new equipment in 2025 has supported the mixed carbonization of sludge and plastics, expanding the scenarios of municipal solid waste treatment.
Carbon sink value-added: carbon dioxide is sequestered in the carbonization process through carbon capture technology (CCUS), which enhances the income from carbon trading.
Modular design: Small integrated equipment (occupying an area of ≤20 square meters) promotes distributed energy production in rural areas.

How to choose sawdust charcoal machine?

Zhengzhou Fude Machinery produces sawdust charcoal machine with high efficiency and energy saving, environmental protection and no pollution, and high degree of automation. It can efficiently convert sawdust and other biomass raw materials into high-quality charcoal, and at the same time reduce pollution to the environment, such as reducing deforestation and garbage accumulation. In addition, the machine adopts advanced technology, such as PLC automatic control and smokeless carbonization process, to ensure the production process is stable and safe, and to improve the burning efficiency and calorific value of charcoal.