Seven machines. One closed thermal loop.
Tongao builds its own gasification, carbonisation and drying equipment. Biomass in; biochar, hot air, hot water and fuel gas out — smokeless, odourless and engineered for continuous industrial duty.








Gasification smokeless furnace
Patented high-temperature pyrolysis with secondary combustion — over 85% efficiency, no smoke, no odour.
Three model sizes — 63, 92 and 120 — gasify biomass fuel at high temperature, then burn the gas a second time. Compact, light and movable, with custom sizes available on request.
- Recycled-resource recovery
- Reprocessing of manufacturing rejects
- Industrial-park production and domestic waste
- Electrophoresis and coating lines

Gasification hot-water boiler
3–5 tonnes of hot water an hour from biomass, with low flue-gas temperature and high thermal recovery.
High-temperature pyrolysis of biomass material followed by combustion of the pyrolysis gas raises biomass energy utilisation substantially while keeping exhaust temperature low.
- Process hot water for manufacturing
- Staff washing and canteen supply
- Workshop heating
- Washing, textile and dyeing lines

Gasification hot-air furnace
Smart temperature control and an independent flue keep the delivered air clean and precisely regulated.
Gasifies waste and biomass without smoke, dust or odour and delivers hot air for space heating or drying rooms. Dust collection and filtration sit inside the unit; the flue runs separately so the air stream stays pure.
- Greenhouse heating
- Constant-temperature livestock houses
- Workshop warming
- Paper making and industrial drying

Gasification drying room
A compressed drying process that replaces steam — sized to your volume, with trolleys and trays to match.
Smokeless, dust-free high-temperature pyrolysis heats circulating air through pipework at low combustion temperature. It replaces microwave and steam drying and cuts drying cost sharply, with an independent flue protecting product quality.
- Chinese medicinal herbs
- Vegetables and fruit
- Bamboo shoots
- Meat and other food drying

Rotary tumble dryer
1.5 tonnes of feedstock an hour, dropping moisture 15 points, with a shaftless auger and tumbling internals.
Makes full use of agricultural and forestry residues with smokeless, dust-free combustion. Secondary combustion cuts energy consumption and the vertical tumbling layout saves floor area while shortening drying time.
- Sawdust
- Distillers' grain
- Sand and aggregates
- Organic fertiliser

Three-in-one carbonisation furnace
Sealed pyrolysis into high-grade biochar — no smoke, no odour, no tar, with fixed carbon above 85%.
Gasification, carbonisation and drying combined in a single unit. The sealed design raises carbonisation efficiency, lowers energy use, stabilises char quality and reduces labour cost.
- Bamboo char
- Wood char
- Straw and crop-residue char
- Feedstock for certified carbon removal

Char–gas co-production line
Biochar and biomass fuel gas from one line — the gas feeds drying, heating and power on site.
Pyrolysis and gasification of wood, straw and other biomass produce biochar while releasing biomass fuel gas. Resource use and energy output are captured in the same loop, cutting operating cost substantially.
- Biochar production
- Activated carbon
- Barbecue charcoal
- On-site drying, heating and power
Nothing leaves the site as waste heat.
Each machine is a node in the same loop: residues are gasified, the pyrolysis gas is burnt a second time, and the recovered heat drives drying, heating and hot water while carbon stays locked in biochar.
Compare the range at a glance.
| Machine | Power | Dimensions | Weight | Output |
|---|---|---|---|---|
Gasification smokeless furnace 01 · 气化无烟炉 | 0.75 kW | 1.3 × 1.1 × 2.2 m | 910 kg | 100 / 200 / 300 kg per hour |
Gasification hot-water boiler 02 · 气化无烟热水锅炉 | 6.8 kW | 2.6 × 3.2 × 4.2 m | 2,860 kg | 3–5 t hot water per hour |
Gasification hot-air furnace 03 · 气化无烟热风炉 | 3 kW | 3 × 1.5 × 2.3 m | 1,380 kg | Adjustable air volume, controlled temperature |
Gasification drying room 04 · 气化无烟烘房 | 2.2 kW | 3.1 × 7.5 × 2.6 m | 2,800 kg | Customised to batch volume |
Rotary tumble dryer 05 · 烘干机 | 28 kW | 5.5 × 3.5 × 2.6 m | 10 t | 1.5 t/h at −15% moisture |
Three-in-one carbonisation furnace 06 · 三合一炭化炉 | 3 kW | 2.85 × 1.8 × 2.6 m | 1.8 t | High char yield, fixed carbon >85% |
Char–gas co-production line 07 · 炭气联产设备 | Line-scale | Configured per site | Configured per site | Biochar + biomass fuel gas |
Deployed across farms, mills and industrial parks.







Specify a line for your feedstock.
Non-standard sizes, throughputs and integrations are built to order. Send us your residue type, moisture and volume and we will size the loop.
No. 18 Yaojia'an, Xingang Village, Puyuan Town, Tongxiang, Jiaxing, Zhejiang




