Steam Generator Vessel

Product Specifications

Technical details and manufacturing context for Steam Generator Vessel

Definition

The Steam Generator Vessel is a critical pressure vessel component within an industrial steam generation system for process heating. It serves as the primary containment and heat exchange unit where water is converted to steam through thermal energy transfer from combustion gases, electric heating elements, or other heat sources. Designed to withstand high temperatures and pressures, it ensures efficient steam production for industrial heating applications. The vessel is typically fabricated from carbon steel, stainless steel, or alloy steel, with material selection depending on service conditions and corrosion requirements. Key design parameters include design pressure (1.0–1.6 MPa), design temperature (150–200 °C), steam capacity (500–2000 kg/h), water volume (0.5–2.0 m³), shell thickness (8–20 mm), and heat transfer area (10–30 m²). Material grades such as Q245R per GB/T 713 are referenced, and design and fabrication follow standards like GB/T 150. Overall dimensions range from 2000 to 4000 mm, with weights between 1500 and 5000 kg. Nozzle sizes (DN50–DN150) accommodate steam outlet and feedwater inlet, and inspection ports (400–600 mm) allow internal access. Corrosion allowance (1.5–3.0 mm) is added to shell thickness for service life. These values are directory reference ranges and must be verified against the specific model and application with the legal manufacturer or supplier. The vessel operates under controlled pressure and temperature, with safety systems ensuring safe operation. It is a component, not a standalone product, and its selection requires careful consideration of process requirements, materials, and applicable standards.

Working Principle

Water is introduced into the vessel where it absorbs thermal energy from heat sources (combustion gases, electric elements, or thermal fluids) through heat exchange surfaces. This causes the water to boil and generate steam at controlled pressure and temperature. The steam is then distributed for process heating applications. Pressure regulation and safety systems maintain safe operating conditions. The vessel's design ensures efficient heat transfer and steam generation while withstanding the thermal and mechanical stresses of operation.

Common Materials

Carbon Steel, Stainless Steel, Alloy Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Design Pressure	1.0–1.6 MPa	Determines shell thickness and safety valve setting.GB/T 150
Design Temperature	150–200 °C	Material selection and thermal expansion.GB/T 150
Steam Capacity	500–2000 kg/h	Matches boiler output requirements.
Water Volume	0.5–2.0 m³	Affects blowdown and startup time.
Shell Thickness	8–20 mm	Calculated from pressure and diameter.GB/T 150
Material Grade	Q245R	Carbon steel for moderate service.GB/T 713
Overall Dimensions	2000–4000 mm	Diameter × length; affects footprint.
Weight	1500–5000 kg	For transport and installation.
Heat Transfer Area	10–30 m²	Determines efficiency.
Nozzle Size	DN50–DN150 mm	For steam outlet and feedwater inlet.GB/T 9119
Inspection Port Diameter	400–600 mm	For internal inspection and cleaning.
Corrosion Allowance	1.5–3.0 mm	Adds to thickness for service life.GB/T 150

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Shell Part
Primary pressure-containing cylindrical body of the vessel

Material: Carbon Steel or Stainless Steel
Heads/End Closures Part
Sealed ends of the vessel that contain pressure

Material: Carbon Steel or Stainless Steel
Nozzles/Connections Part
Inlet and outlet connections for water, steam, and instrumentation

Material: Carbon Steel or Stainless Steel
Manway
Access opening for inspection and maintenance

Material: Carbon Steel or Stainless Steel
Support Saddles/Lugs Part
Structural supports for mounting and securing the vessel

Material: Carbon Steel
Heat Exchange Surfaces
The tubes or elements the heat actually crosses to reach the water.
Pressure Regulation and Safety System
Holds the working pressure and relieves it before the vessel is overpressured.

Manufacturers of Steam Generator Vessel

Manufacturer profiles associated with Steam Generator Vessel.

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Frequently Asked Questions

What is the primary function of a steam generator vessel?

The primary function is to contain water and steam while facilitating heat transfer from combustion gases, electric elements, or other heat sources to convert water into steam for industrial process heating.

What materials are commonly used for steam generator vessels?

Common materials include carbon steel, stainless steel, and alloy steel. Material selection depends on operating conditions, corrosion resistance, and temperature requirements. Specific grades like Q245R are referenced in standards such as GB/T 713.

What design parameters are critical for selecting a steam generator vessel?

Critical parameters include design pressure, design temperature, steam capacity, water volume, shell thickness, heat transfer area, and corrosion allowance. These must be matched to the process requirements and verified with the manufacturer.

What standards apply to the design and fabrication of steam generator vessels?

Standards such as GB/T 150 for pressure vessels and GB/T 713 for steel plates are commonly referenced. However, compliance must be verified with the legal manufacturer or supplier for the specific model.

Data Basis

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pressure:	Up to 2.5 MPa (25 bar) standard, higher available with specialized designs
flow rate:	5-100 m³/h water capacity, steam output dependent on heat input
temperature:	150°C to 350°C (saturated steam conditions)
slurry concentration:	Not applicable - designed for clean water/steam only

Product Specifications

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