Continuous Sludge Carbonization Plant

Features
  • Continuous Biochar Production: Sludge carbonization plant utilizes continuous pyrolysis technology and is equipped with automated control system. It enables continuous feeding, pyrolysis carbonization, and biochar production.
  • Processes A Variety of Feedstocks: agricultural and forestry waste, sludge, animal manure, etc.
  • Energy Self-circulation: Syngas generated during carbonization are filtered and purified for reuse as a heat source. This enables a self-sustaining heat cycle, significantly reducing fuel costs.
  • Extreme Eco-friendliness: Equipped with an advanced purification system to ensure zero black smoke emissions during the production process.
  • Customized Solutions: Pre-treatment system can be configured based on the size and moisture content of the raw materials.
Request a quote

Technical Specifications

ModelMJT-100MJT-500MJT-1000MJT-2000MJT-3000MJT-5000
Capacity100KG/H500KG/H1000KG/H2000KG/H3000KG/H5000KG/H
OperationFully Continuous
Accepted materials Rice Husk, Saw Dust, Wood Waste, Straw, Palm Shell, Coconut Shell, Sludge, Animal Manure, Sugarcane Bagasse
End productsBiochar, Syngas, Tar& Wood Vinegar(optional)
Applicable fuelCoal/Natural Gas/LPG/Diesel/Wood/Pyrolysis Oil 
Material of reactor304 Stainless Steel
Reactor structureDouble Cylinders
Cooling Water Cooling 
Land Required300-400m2

The continuous sludge carbonization plant employs a slow pyrolysis process to convert sludge into sludge biochar within a sealed environment, while simultaneously recovering syngas to provide self-sustaining heat. The biomass carbonization plant achieves sludge volume reduction, harmless treatment, and resource recovery.

Raw Materials

Municipal Sewage Sludge

Excess activated sludge generated from the biochemical treatment of urban domestic sewage. It has a high organic matter content and is the most commonly used feedstock for sludge carbonization projects. The organic matter consists primarily of microbial biomass and humus, making it suitable for pyrolysis-based carbonization to produce sludge biochar.

Municipal sewage sludge cannot be fed directly into the carbonization furnace. Dewatered sludge with a moisture content of 80% must first be dried to below 20% before entering the pyrolysis stage.

Industrial Organic Sludge

Sludge from the food, brewing, and papermaking industries: High organic matter and low heavy metal content. Pyrolysis and carbonization of these materials can yield high-quality biochar.

Sludge from printing and dyeing, chemical, and pharmaceutical wastewater: High organic matter content, but requires careful monitoring for heavy metals, persistent organic pollutants (POPs), and toxic contaminants.

Livestock and poultry manure digestate sludge: Classified as organic sludge. It is suitable for co-carbonization and offers high potential for carbon sequestration.

Final Products

Name Picture Application
Biochar/Charcoal Sludge Biochar Used as soil conditioner, carbon sequestration, improve the quality of soil Used as fuel for industry heating and cooling or BBQ Can be reprocessed into activated carbon, widely used in the smelting, chemical fields.
Syngas Syngas Can be recycled to heat the carbonization host. By this way, you can reduce a lot of fuel costs.

Sludge Carbonization

Continuous Biochar Production Process

Drying System

Feedstock Pre-treatment

Raw sludge from wastewater treatment plants typically has a moisture content of around 80% and cannot be fed directly into the carbonization furnace. High moisture content drastically increases energy consumption for drying, consumes the furnace's thermal load, and can even lead to unstable pyrolysis temperatures.

Wastewater sludge generally requires mechanical dewatering, such as plate-and-frame filter pressing or belt press dewatering. Some projects incorporate a pre-drying unit to reduce the sludge cake to the target moisture content before it enters the continuous carbonization equipment.

Sludge Carbonization Plant

Feedstock Conveying

Continuous and stable feeding is a crucial foundation for the steady operation of a continuous biomass pyrolysis plant.The dried material is transported via conveyor belt to the feeder.

Conveying equipment can continuously transport pre-treated feedstock to the carbonization zone. For industrial large scale biochar production projects, the uniformity of the feed directly affects the stability of the subsequent biomass carbonization process.

Slow Pyrolysis in Biomass to Biochar Production

High-Temperature Continuous Carbonization

Once biomass feedstock enters the carbonization equipment, it undergoes pyrolysis and carbonization at a set temperature and residence time. Precisely controlling the pyrolysis and carbonization process ensures greater uniformity in the quality of the resulting biochar.

Biomass feedstocks vary in terms of moisture, density, ash, and volatile matter content. Consequently, operational parameters for the carbonization equipment must be adjusted based on the specific characteristics of the feedstock during actual production.

Biomass to Biochar Production

Biochar Cooling and Discharge

Biochar that has just undergone carbonization is typically at a high temperature. Therefore, after discharge, it requires cooling via an appropriate cooling and conveying system. The biochar then proceeds to subsequent stages such as storage, packaging, or further processing.

A well-designed cooling system not only facilitates the collection of the finished product but also enhances the safety of the entire production process.

Energy Recovery and Utilization

Syngas is generated during the biomass pyrolysis process. It first passes through a cyclone dust removal system for desulfurization and dust removal, then enters a condenser where it is separated into wood vinegar and tar. The remaining syngas is directed to the exterior of the main furnace to heat the carbonization reactor.

A portion of the waste heat flue gas can be used to heat the dryer. The remaining flue gas is discharged after passing through the dust removal system.

Our Advantages

OEM
We are original manufacturer,has the ability to do customized design, keep competitive prices
Experience
We have more than 20 years manufacturing experience, 10 years exporting experience
R&D
We have R&D department, to do technology upgrading and new products research, clients have the chance to share the latest innovation
Service
Mingjie will provide seamless service from our first communication, after-sale service has the beginning but never has the end
Investment
With constant financial support, Mingjie also looking for possibilities of investment overseas
Overseas Office
Mingjie has overseas office in the Philippines and Brazil, has its own runing factory in Thailand, we can do the local technical and installation service. Solve the clients’ problems in the most efficient way.

Advantages of Biomass Pyrolysis Carbonization Plant

Reactor structure takes dual cylinder type, which has long stroke and can ensure the biomass carbonized completely

Complete Reactor made of 304 stainless steel, which can resist high temperature and give the machine service life much longer

Fully Continuous operation, non-stop running,  keep feeding and carbon discharging 24 hours per day, high automation,

The complete line takes modular design, which is easy for transportation and installation, save a lot of installation cost

The machine use it own produced syngas as main fuel during the carbonization, save a lot of energy cost

PLC control system, the process is fully automatic

Related Products

What can we help you with?