S2: Continuous Carbonization & Char-Gas Co-generation Solution
Our continuous carbonization system converts biomass and organic waste into high-quality biochar while simultaneously generating combustible syngas for power co-generation. The char-gas co-generation process achieves complete thermal energy circulation — the heat released during carbonization is captured and reused, dramatically improving overall energy efficiency.
Carbon accounting boundary: Potential storage and avoided-emission effects depend on feedstock traceability, biochar properties, end use, energy balance, the selected methodology and independent verification. No carbon-credit eligibility or emissions result is stated before project-specific review.
ESG & Carbon Asset Management
Carbon-credit eligibility and any quantified climate benefit require a dated methodology, feedstock and operating evidence, product testing, eligible end use, independent validation and local project confirmation. They must not be treated as automatic project revenue.
Char-Gas Co-generation — Thermal Circulation Logic
The char-gas co-generation system operates on a closed-loop thermal circulation model:
- Primary Carbonization: Biomass feedstock enters the continuous carbonization reactor, where controlled pyrolysis at 450-650°C produces biochar and releases volatile syngas.
- Syngas Combustion: The hot syngas is directly fed into a gas combustion chamber, generating high-temperature flue gas (800-1000°C) for power generation via a steam turbine or ORC unit.
- Waste Heat Recovery: Exhaust heat from power generation is captured through economizers and heat exchangers, preheating incoming feedstock and drying biomass — reducing moisture content below 15% before entering the reactor.
- Thermal Recirculation: A portion of the hot flue gas is redirected to the carbonization reactor jacket, maintaining optimal pyrolysis temperature without external fuel input after startup.
- Energy integration basis: Available gas and heat depend on feedstock moisture and composition, operating stability, gas cleaning, auxiliary loads and the selected generator or steam system. Self-sufficiency and export require a verified project energy balance and grid or receiving-load review.
Connect biochar production with usable heat, steam or power.
A continuous carbonization project can be evaluated as a carbon-product system and an energy system. The correct route depends on biomass consistency, target carbon specification, heat demand, operating scale and the customer's ability to use energy continuously.

Separate three commercial routes before selecting equipment
Metallurgical biochar, carbon-project biochar and hard-carbon precursor projects have different customers, testing methods and acceptance cycles.
Metallurgical biochar
Prioritize fixed carbon, ash, sulfur, phosphorus, strength, sizing and delivered cost for the downstream furnace.
Carbon-project biochar
Prioritize feedstock traceability, stable carbon, emissions data, operating records and the applicable carbon methodology.
Activated-carbon feedstock
Prioritize precursor uniformity, volatile matter, ash and the subsequent activation route.
Hard-carbon precursor
Treat the project as a development program: precursor purification, controlled pre-carbonization and sample validation come before an industrial-line promise.
Use the recovered energy where it creates the clearest operating value
Direct steam supply can be more practical when a stable industrial steam user is nearby; power generation becomes a separate engineering package with stricter gas-cleaning and load-matching requirements.
- 01Dry and size the biomass
- 02Continuous oxygen-limited carbonization
- 03Separate dust and condensable fractions
- 04Clean and condition process gas
- 05Return heat to the carbonizer first
- 06Evaluate steam, power or combined heat-and-power use
What must be verified before an energy claim is used
Do not calculate an energy return from nameplate throughput alone.
Feedstock test
Moisture, ash, bulk density, particle size and seasonal variation determine drying and feeding requirements.
Carbon target
The carbon specification defines residence time, thermal profile, cooling and product handling.
Gas characterization
Gas quantity, heating value, tar, dust and moisture determine whether an engine, boiler or thermal oxidizer route is practical.
Demand match
Confirm the user's hourly steam or electrical load, pressure or voltage conditions, annual schedule and backup-energy requirement.
See the connected equipment boundary.
Reference visuals support early layout discussion. Final equipment, arrangement and interfaces are confirmed from the project material and site.
Translate project facts into an equipment list.
This reference matrix shows the decision logic. Final quantities, models and interfaces belong in the approved project proposal.
| System block | Typical scope | Configuration basis |
|---|---|---|
| Biomass preparation | Drying, size control, storage and metered feeding | Moisture, density and seasonal consistency |
| Carbonization | Continuous reactor, atmosphere control and thermal profile | Target carbon specification |
| Product handling | Sealed cooling, sizing, storage and sample points | Oxidation, dust and product quality |
| Gas and condensables | Dust separation, condensation and gas conditioning | Tar, moisture and intended heat route |
| Energy integration | Internal heat return, optional boiler, generator or user interface | Verified energy balance and demand match |
Advance the project only when the required evidence is available.
Each gate turns customer information into a defined technical or commercial output for the next decision.
Biomass and product
Confirm biomass consistency and the actual carbon buyer specification.
OutputQualified material-to-product basisThermal route
Define drying, sizing, carbonization, cooling and quality sampling.
OutputConnected carbon-production flowEnergy demand
Match process heat with a verified nearby steam, heat or power demand.
OutputPreliminary energy-use boundaryEvidence and acceptance
Agree operating records, tests, emissions and any methodology review.
OutputProject acceptance and evidence planQuestions to resolve before configuration.
Answers define the engineering boundary; they do not replace representative material testing or local compliance review.
What changes the continuous carbonization configuration?
Biomass type, moisture, particle size, ash, target carbon specification, operating hours, heat-use route and environmental requirements change the equipment boundary.
Should steam or power generation be selected first?
The receiving energy load should be studied first. A stable nearby steam demand can favor direct steam use, while power generation requires a separate gas-cleaning, generator and electrical-integration package.
Can carbon-credit revenue be treated as guaranteed project income?
No. Eligibility depends on feedstock traceability, operating evidence, methodology, verification and local project conditions.
How is a hard-carbon precursor project different?
It requires precursor purification, controlled thermal development, powder processing and independent material or electrochemical validation beyond ordinary biochar production.
Define the material before selecting the equipment.
Share a representative material description, available volume, site status and target outputs. YUSHUNXIN will use those facts to prepare the relevant process boundary and configuration discussion.
Continuous carbonization and energy integration
Select the carbonization class from prepared volumetric feed, bulk density, moisture, target carbon and energy-use boundary.
Incoming material
Sawdust, rice husk, straw, shell or other biomass; particle size, full/air-dry moisture, ash and bulk density.
Expected outputs
Biochar and project-specific gas/heat streams; carbon properties require representative laboratory and stable-run data.
Project interfaces
Drying/preparation, sealed feeding, carbonization, gas treatment/combustion, cooling, storage, fire control and optional heat recovery.
Use only the row matching the selected process boundary.
| Catalogue reference | Capacity | Power | Physical envelope | Included boundary |
|---|---|---|---|---|
| SXTD820Continuous carbonization | 1–2 m³/h | 95 kW | 600 m² catalogue land reference | Prepared biomass continuous carbonization line |
| SXTD1200Continuous carbonization | 3–5 m³/h | 110 kW | 650 m² catalogue land reference | Prepared biomass continuous carbonization line |
| SXTD1500Continuous carbonization | 5–8 m³/h | 153 kW | 800 m² catalogue land reference | Prepared biomass continuous carbonization line |
| SXTD1800Continuous carbonization | 8–10 m³/h | 178 kW | 800 m² catalogue land reference | Prepared biomass continuous carbonization line |
| SXTD2000 - 10–14 classContinuous carbonization | 10–14 m³/h | 190 kW | 850 m² catalogue land reference | Catalogue prints SXTD2000 for this class |
| SXTD2000 - 14–17 classContinuous carbonization | 14–17 m³/h | 220 kW | 850 m² catalogue land reference | Catalogue repeats SXTD2000; final model code requires written confirmation |
Configuration rule: catalogue capacity is a planning reference. Stable throughput, installed/operating power, footprint, recovery, purity, emissions and utility demand require the approved equipment list, representative material and written acceptance conditions.
Information required before configuration and quotation
- Representative material photos, specifications and available sample.
- Required capacity plus hours per shift, shifts per day and operating days.
- Target outputs, sampling method and downstream receiver requirements.
- Site country, available power, fuel, water, compressed air and building limits.
- Local environmental, fire, storage and occupational-safety requirements.
- Requested delivery boundary: equipment, layout, installation, commissioning and training.