Steam Generator
Boilers
Steam Generator
Model: LSS/ZLSS Series
1. Product Overview
A steam generator produces steam by fuel combustion or electric heating. Compared with conventional steam boilers, it holds a smaller water volume, starts up faster and carries a lower safety risk; with water volume below 30 L, it falls outside the scope of statutory boiler inspection. The LSS/ZLSS series vertical water-tube steam generator adopts a vertical once-through tube bundle structure: water is heated and evaporated inside the tubes, and saturated steam is delivered from the upper steam-water separator. The unit is compact, reaches rated output within minutes and combines high thermal efficiency with a small footprint. It is widely used in food processing, biopharmaceuticals, chemical processing, garment pressing, cleaning and sterilization, and other applications requiring a rapid steam supply.
Key Features
Rated evaporation capacity 0.1–2 t/h
Rated pressure 0.4–1.0 MPa
Thermal efficiency ≥95%
3–5 minutes rapid steam generation
Water volume <30L, exempt from supervision inspection
Fully automatic control, one-button start
Multiple heat sources: natural gas/electric
2. Working Principle
Once-Through Tube Bundle Evaporation Principle
Fuel burns in the combustion chamber producing high-temperature flue gas, which flows transversely across the once-through tube bundle, transferring heat to the circulating water inside the tubes. The heated water partially evaporates forming a steam-water mixture with reduced density, which rises through the tube bundle into the upper steam chamber. After steam-water separation, saturated steam is output. The separated water returns to the lower header via downcomers, forming a natural circulation. The once-through tube bundle structure provides large heat transfer area and high heat transfer coefficient, enabling the steam generator to reach rated evaporation capacity within an extremely short time.
Electric Heating Steam Generation Principle
The electric model converts electrical energy into heat through immersion-type heating elements, bringing the water in the vessel directly to a boil. The stainless-steel heating elements are arranged in groups for stepwise power regulation, while the PID-based temperature control keeps steam pressure stable. With no combustion process and zero emissions, the electric model suits sites with strict environmental requirements.
3. System Classification
By Heat Source
1. Gas-fired steam generator (natural gas, LPG)
By Structure
1. Vertical once-through tube type (LSS) — water tube structure, rapid steam
By Control Mode
1. Fully automatic control (PLC + touch screen)
4. Detailed Technical Parameters
4.1 Gas-Fired Main Parameters
| Parameter | Unit | LSS-0.1 | LSS-0.2 | LSS-0.3 | LSS-0.5 | LSS-1 | LSS-2 |
|---|---|---|---|---|---|---|---|
| Rated evaporation capacity | t/h | 0.1 | 0.2 | 0.3 | 0.5 | 1 | 2 |
| Rated pressure | MPa | 0.4/0.7 | 0.4/0.7/1.0 | 0.4/0.7/1.0 | 0.7/1.0 | 0.7/1.0 | 0.7/1.0 |
| Steam temperature | °C | 152/170 | 152/170/184 | 152/170/184 | 170/184 | 170/184 | 170/184 |
| Thermal efficiency | % | ≥95 | ≥95 | ≥95 | ≥96 | ≥96 | ≥96 |
| Natural gas consumption | Nm³/h | 7.5 | 15 | 22.5 | 37 | 73 | 146 |
| Water volume | L | <30 | <30 | <30 | <30 | <30 | <30 |
| Dimensions (L×W×H) | m | 0.8×0.7×1.8 | 0.9×0.8×2.0 | 1.0×0.9×2.1 | 1.1×1.0×2.3 | 1.4×1.2×2.6 | 1.8×1.5×3.0 |
| Shipping weight | kg | 320 | 480 | 650 | 950 | 1600 | 2800 |
4.2 Electric Heating Main Parameters
| Parameter | Unit | DR-0.05 | DR-0.1 | DR-0.2 | DR-0.3 | DR-0.5 |
|---|---|---|---|---|---|---|
| Rated evaporation capacity | t/h | 0.05 | 0.1 | 0.2 | 0.3 | 0.5 |
| Rated pressure | MPa | 0.4/0.7 | 0.4/0.7 | 0.4/0.7/1.0 | 0.7/1.0 | 0.7/1.0 |
| Electric power | kW | 36 | 72 | 144 | 216 | 360 |
| Power supply | — | 3P~380V/50Hz | 3P~380V/50Hz | 3P~380V/50Hz | 3P~380V/50Hz | 3P~380V/50Hz |
| Water volume | L | <30 | <30 | <30 | <30 | <30 |
| Dimensions (L×W×H) | m | 0.6×0.5×1.5 | 0.7×0.6×1.6 | 0.8×0.7×1.8 | 0.9×0.8×2.0 | 1.0×0.9×2.2 |
5. Core Component Selection
| Component | Material/Spec | Recommended Brand | Remarks |
|---|---|---|---|
| Once-through tube bundle | 20# seamless steel/SS | — | High heat transfer |
| Burner | Gas/oil fired | Baltur/Riello | Low NOx type |
| Electric heating tube | SS 316L/Incoloy800 | — | Group control |
| Feed water pump | Vertical multistage centrifugal | Grundfos/CNP | SS material |
| Control panel | PLC + touch screen | Siemens/OMRON | One-button start |
| Safety valve | Full-lift spring type | LESER/Spirax Sarco | Dual safety valve |
| Water level controller | Electrode/float type | Spirax Sarco | Dual protection |
| Pressure controller | Pressure transmitter | WIKA/Yokogawa | PID control |
6. Typical Application Fields
| Industry | Application | Steam Requirement |
|---|---|---|
| Food processing | Cooking, sterilization, drying | Saturated steam 0.3–0.7 MPa |
| Biopharmaceuticals | Sterilization, culture, concentration | Clean steam 0.2–0.5 MPa |
| Chemical industry | Reaction heating, distillation | Saturated steam 0.3–1.0 MPa |
| Garment & textile | Pressing, shaping | Saturated steam 0.4–0.7 MPa |
| Cleaning & sterilization | CIP cleaning, disinfection | Saturated steam 0.2–0.5 MPa |
| Hotels | Hot water, heating | Saturated steam 0.2–0.4 MPa |
7. Design Standards & Certification
Design Standards
GB/T 16508 — Fire-tube boiler standard
NB/T 47034 — Industrial boiler technical conditions
TSG 11 — Boiler safety technical regulations
JB/T 10094 — Industrial boiler general technical conditions
Certification
ISO 9001 quality management system certification
Special equipment manufacturing license
Environmental product certification
CE certification (optional)
8. Customizable Options
| Option | Description | Remarks |
|---|---|---|
| Economizer | Flue gas heat recovery | Efficiency +2–3% |
| Condenser | Deep flue gas heat recovery | Efficiency ≥98% |
| Water softener | Feed water softening | Extended service life |
| VFD control | Fan & pump variable frequency | Energy saving 30% |
| Remote monitoring | IoT cloud platform | Mobile access |
| SS casing | SUS304/316L enclosure | Food/pharma grade |
| Multi-fuel switching | Gas/oil dual burner | Flexible switching |
| Low noise design | Sound enclosure + silencer | ≤65dB |
9. Warranty Terms
Warranty period: 18 months from date of shipment or 12 months from date of commissioning (whichever comes first). The warranty covers equipment failures due to material or manufacturing defects. The warranty does not cover consumable parts (electric heating tubes, seals, refractory materials) or damage caused by improper operation, substandard water quality, or non-compliant installation.
Warranty Service Scope
Free replacement of defective parts
Free on-site diagnosis and repair
24/7 phone technical support
Discounted spare parts after warranty period
10. Packaging & Delivery
| Item | Packaging Method | Transport Dimensions | Gross Weight |
|---|---|---|---|
| Generator main unit | Weatherproof film + steel base | Per model | Unit +5% |
| Burner | Wooden crate | Per spec | Per spec |
| Control panel | Wooden crate + moisture barrier | 0.8×0.6×0.5m | ~40kg |
| Pump & valves | Wooden crate | Per spec | Per spec |
| Accessories | Wooden crate | 0.6×0.4×0.4m | ~20kg |
Lead time: 15–30 working days. Delivery terms: FOB/Shanghai. Shipping documents: Certificate of conformity, operation manual, packing list, pressure vessel certificate.
11. Information Required for Inquiry
To prepare an accurate quotation, please provide the following information:
| No. | Parameter | Description |
|---|---|---|
| 1 | Rated evaporation capacity | t/h or kg/h |
| 2 | Rated steam pressure | MPa or bar |
| 3 | Steam temperature | °C |
| 4 | Heat source type | Gas/oil/electric |
| 5 | Fuel calorific value | kcal/Nm³ or kcal/kg |
| 6 | Feed water temperature | °C |
| 7 | Steam application | Process description |
| 8 | Installation environment | Indoor/outdoor |
| 9 | Power supply | V/Hz/phase |
| 10 | Other requirements | SS casing, remote monitoring, etc. |