Product Overview
The LSS Series Gas/Oil-Fired Once-Through Steam Boiler is a compact vertical steam solution designed for rapid, on-demand industrial steam supply. Its low-water-volume once-through structure, W-shaped flue-gas path, and fin-connected dual-ring tubes provide fast start-up and efficient heat transfer. The factory-assembled package saves installation space and supports multi-unit parallel operation for variable steam loads. Intelligent combustion controls, multi-layer safety protection, and IoT-enabled remote monitoring help deliver efficient, reliable operation with reduced operator workload.
Product Structure Drawing
Key Advantages
The low-water-volume once-through design enables steam generation in approximately 3–5 minutes under specified start-up conditions, reducing warm-up losses and responding quickly to changing steam demand.
The W-shaped flue-gas path and fin-connected dual-ring vertical tubes expand effective heat-transfer area, supporting ≥98% thermal efficiency under specified design and operating conditions.
Factory-assembled vertical construction minimizes installation footprint and on-site work. Multiple units can operate in parallel for flexible capacity adjustment and staged steam supply.
Network-enabled controls support remote multi-unit monitoring of fuel use, steam output, pressure, and temperature, with automated daily and monthly reports when the connected system is configured.
A sound-absorbing structure helps reduce operating noise, while optimized combustion control supports low-NOx performance tailored to the selected fuel and local emission requirements.
Standardized automatic or semi-automatic CO₂ welding supports consistent seam quality. Seamless-tube preheaters with sandblasted and hot-dip-galvanized surfaces improve component durability and service reliability.
Typical Applications
Cooking、Pasteurization、Sterilization、Cleaning、Evaporation、Drying
Dyeing、Bleaching、Washing、Sizing、Printing、Drying、Finishing
Reactor Heating、Distillation、 Evaporation、Drying、Stripping、Tank Heating 、Cleaning
Pulp Cooking、Evaporation、Paper Drying、Starch Preparation、Coating、Tank Heating、Cleaning
Rubber Vulcanization、Compounding、Mold Heating、Process Water Heating、Equipment Cleaning、Drying
Space Heating、Domestic Hot Water、Campus Heating、Public Building Heating、Industrial Heat Supply、Peak-Load Support
Technical Specifications
| Model | LSS0.3–0.7–Y·Q | LSS0.5–0.7–Y·Q | LSS0.75–1.0–Y·Q | LSS1–1.0–Y·Q | LSS2–1.0–Y·Q | LSS3–1.0–Y·Q | LSS4–1.0–Y·Q | |||
| Performance | Rated capacity | Kgh | 300 | 500 | 750 | 1000 | 2000 | 3000 | 4000 | |
| Rated working pressure | MPa | 0.7 | 0.7 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | ||
| Fuel boiler capacity | m³ | 0.134 | 0.19 | 0.206 | 0.256 | 0.49 | 0.61 | 0.8 | ||
| Boiler efficiency | % | 92–96 | 92–96 | 92–96 | 92–96 | 92–96 | 92–96 | 92–96 | ||
| Energy saver | – | 5.4 | 6.6 | 7.8 | 9 | 11.5 | 35 | 45 | ||
| Combustion type | – | ON–OFF | ON–OFF | ON–OFF | ON–OFF | ON–OFF | ON–OFF | ON–OFF | ||
| Fuel consumption | Natural gas | Nm³/h | 22.6–21.8 | 37.7–36.3 | 56.5–54.4 | 75.3–72.6 | 150.7–145.1 | 226.1–217.7 | 290.2–301.4 | |
| Gas inlet diameter | Kgh | 18.7 | 31.2 | 46.7 | 62.3 | 124.6 | 186.9 | 249.2 | ||
| Total power consumption of boiler | KW | 1.35 | 2.45 | 3.2 | 3.9 | 11.4 | 19.3 | 22.8 | ||
| Weight of equipment | Kg | ~ 900 | 1320 | 1630 | 2050 | 2990 | 3345 | 3985 | ||
| Pipe performance & connection size | Gas inlet diameter | mm | 25 | 40 | 40 | 40 | 50 | 65 | 65 | |
| Feed water inlet diameter | 20 | 25 | 25 | 25 | 40 | 40 | 40 | |||
| Steam outlet diameter | 25 | 40 | 40 | 50 | 65 | 80 | 100 | |||
| Pipe diameter | 25 | 25 | 25 | 25 | 25 | 25 | 25 | |||
| Safety valve diameter | 20 | 25 | 25 | 32 | 25、32 | 40、40 | 40、40 | |||
| Auto discharge | – | – | – | 10 | 10 | 15 | 15 | |||
| Chimney diameter | mm | 200 | 250 | 330 | 330 | 360 | 400 | 450 | ||
| Size | Boiler dimensions | Length | mm | 1500 | 1750 | 1900 | 2000 | 2200 | 2400 | 2400 |
| Width | mm | 1150 | 1250 | 1120 | 1500 | 2200 | 2370 | 2470 | ||
| Height | mm | 1900 | 2300 | 2230 | 2400 | 2500 | 2600 | 3350 | ||
