NOBETH Clean Steam Generator: Reliable Clean Steam for Hygienic Production

In industries where steam comes into direct or indirect contact with products, equipment, packaging materials, or sterile surfaces, ordinary industrial steam may not be suitable.

Rust, scale, oil, chemical residues, pipe contamination, and excessive moisture can affect product quality, cleaning results, and sterilization reliability. For this reason, food factories, medical device manufacturers, laboratories, cosmetic plants, and other hygiene-sensitive facilities increasingly require a dedicated clean steam system.

The NOBETH clean steam generator is designed to produce stable and hygienic steam using treated feedwater and sanitary steam-contact components. It can be customized according to the customer’s required steam capacity, working pressure, heating source, water quality, and production process.

What Is a Clean Steam Generator?

A clean steam generator is equipment designed to produce steam with controlled cleanliness and reduced contamination risk.

Unlike ordinary industrial steam, which may pass through carbon steel boilers and long pipe networks, clean steam is normally generated from treated water inside a separate system. The surfaces in contact with water, steam, and condensate are selected according to the hygiene requirements of the application.

A complete clean steam system may include:

• Feedwater treatment equipment
• Clean steam generator
• Sanitary steam separator
• Steam filter
• Pressure control system
• Steam flow control system
• Sanitary valves and pipelines
• Condensate drainage system
• Steam distribution header

The exact configuration depends on whether the steam is used for direct product contact, equipment sterilization, tank cleaning, pipeline sterilization, humidification, heating, or another process.

Why Is Clean Steam Important?

Steam quality affects more than temperature.

If ordinary steam contains rust particles, scale, excessive condensate, boiler treatment chemicals, oil, or other impurities, these contaminants may be transferred to the production equipment or final product.

This can create several problems:

• Product contamination
• Unstable sterilization results
• Stains or deposits on equipment
• Corrosion of sanitary pipelines
• Reduced product consistency
• More frequent cleaning and maintenance
• Difficulty meeting internal hygiene standards

For direct food contact, clean equipment sterilization, sanitary tank heating, and other sensitive processes, the steam system should be designed as part of the production process rather than treated only as a utility supply.

Main Features of the NOBETH Clean Steam Generator

1. Sanitary Stainless Steel Construction

According to the customer’s process requirements, the clean steam generator can use stainless steel materials for the components in contact with feedwater, steam, and condensate.

For higher hygiene requirements, SS316L can be selected for key steam-contact parts. SS316L offers good corrosion resistance and is widely used in sanitary processing systems.

The final material configuration should be selected according to:

• Feedwater quality
• Steam purity requirement
• Product contact conditions
• Cleaning method
• Operating pressure
• Industry standards

2. Stable Steam Pressure and Output

Stable pressure is important for sterilization, heating, cooking, cleaning, and direct steam injection.

The NOBETH control system can automatically manage water feeding, heating, pressure, temperature, and operating alarms. The system can also be customized with PLC and touchscreen control according to the project requirements.

This helps operators maintain a more consistent steam supply while reducing manual operation.

3. Treated Feedwater

Feedwater quality has a direct effect on steam quality and equipment service life.

Depending on the raw water condition and application, the system can be equipped with:

• Water softener
• Precision filtration
• Activated carbon filtration
• Reverse osmosis system
• Purified water tank
• Stainless steel feedwater tank

For general industrial steam, softened water may be sufficient. For direct food contact or hygiene-sensitive applications, reverse osmosis water or purified water may be recommended.

A water analysis should be completed before confirming the final water treatment configuration.

4. Improved Steam Dryness

Wet steam contains excessive water droplets and may reduce heat transfer efficiency or affect the production process.

A sanitary steam separator can be installed downstream of the clean steam generator to remove entrained moisture. A steam filter may also be added where the process requires further particle control.

For direct steam injection, the following components may be combined:

Clean Steam Generator
→ Steam Separator
→ Steam Filter
→ Pressure and Flow Control
→ Production Equipment

This configuration helps provide a more stable and controlled clean steam supply.

5. Automatic Operation and Safety Protection

The system can be designed with automatic operating and safety functions, including:

• Automatic water feeding
• Automatic heating control
• Pressure control
• Water level monitoring
• Overpressure protection
• Low-water protection
• Temperature monitoring
• Safety valve
• Alarm display
• Emergency stop

The exact control configuration depends on the selected model and customer requirements.

Applications of Clean Steam

Food and Beverage Processing

Clean steam can be used for:

• Direct steam injection
• Food cooking
• Cheese melting
• Dairy processing
• Beverage heating
• Tank sterilization
• Pipeline sterilization
• Bottle and jar sterilization
• Mixing and emulsification
• Packaging equipment cleaning

When steam directly contacts food, the quality of the feedwater, steam-contact materials, piping, filtration, and condensate drainage must all be considered.

Medical Device Sterilization

Clean steam is suitable for hygiene-sensitive processes such as:

• Sterilizer steam supply
• Surgical instrument sterilization
• Medical device cleaning
• Equipment chamber heating
• Clean pipeline sterilization
• Laboratory equipment sterilization

The required steam quality should be confirmed according to the sterilizer design, process validation requirements, and local standards.

Cosmetics and Personal Care Production

In cosmetic production, clean steam may be used for:

• Mixing vessel heating
• Emulsification
• Tank cleaning
• Pipeline sterilization
• Process temperature control
• Hygienic humidification

A stainless steel clean steam system helps reduce contamination risk in hygiene-sensitive production areas.

Laboratory and Research Facilities

Laboratories may use clean steam for:

• Autoclaves
• Sterilization chambers
• Humidification
• Reactor heating
• Pilot production
• Clean equipment washing

Compact electric clean steam generators are often suitable where steam demand is relatively low and installation space is limited.

Chemical and High-Purity Material Processing

For processes requiring controlled contamination, clean steam may be applied to:

• Reactor heating
• Pipeline cleaning
• Vessel sterilization
• High-purity material processing
• Temperature-controlled production
• Clean utility systems

The material, pressure, and water treatment configuration should be selected according to the chemical properties of the process.

Clean Steam Generator System Configuration

A complete clean steam solution is not limited to the steam generator itself.

A typical system may include:

1. Raw water tank
2. Water treatment equipment
3. Purified water tank
4. Clean steam generator
5. Steam separator
6. Steam filter
7. Pressure-reducing and flow-control system
8. Steam distribution header
9. Sanitary pipeline
10. Condensate discharge system
11. Production equipment

NOBETH can provide either a single clean steam generator or a complete system solution based on the customer’s production process and installation conditions.

How to Select the Correct Clean Steam Generator

Before selecting a model, the following information should be confirmed.

Required Steam Capacity

Steam capacity is normally expressed in kilograms per hour.

The required capacity can be calculated from:

• Production output
• Number of machines using steam
• Heating time
• Sterilization cycle
• Tank volume
• Initial water temperature
• Target temperature
• Simultaneous steam demand
• Heat loss

It is not recommended to select the machine based only on electrical power or equipment size.

Working Pressure

Different applications require different steam pressures.

The customer should confirm:

• Required operating pressure
• Maximum allowable pressure
• Equipment inlet pressure
• Whether pressure reduction is required
• Whether several production lines use different pressures

A pressure-control station may be required where the clean steam generator supplies several pieces of equipment.

Heating Source

Clean steam generators can be designed with different heating methods depending on the project.

Common options include:

• Electric heating
• Industrial steam heating
• Gas heating
• Diesel heating
• Customized heat source

Electric heating is often suitable for clean production areas because it is easy to control and does not require an on-site combustion system.

Industrial steam-heated clean steam generators are suitable for factories that already have a central boiler system but need to separate ordinary industrial steam from clean process steam.

Voltage and Power Supply

For electric clean steam generators, customers should provide:

• Voltage
• Phase
• Frequency
• Available electrical capacity
• Local electrical standard

Common industrial power supplies include 380 V, 400 V, 415 V, three-phase, 50 Hz, or 60 Hz. The electrical configuration should be confirmed before production.

Feedwater Quality

The customer should provide a raw water report when possible.

Important parameters may include:

• Hardness
• Conductivity
• Chloride
• Silica
• Total dissolved solids
• pH
• Iron content
• Microbiological condition

This information helps determine whether the project requires a water softener, reverse osmosis system, purified water tank, or another treatment process.

Clean Steam and Pure Steam: Are They the Same?

Clean steam and pure steam are related, but they are not always identical.

Clean steam is generally produced using treated water and sanitary equipment to reduce contamination risk. It is commonly used in food processing, medical device sterilization, laboratories, cosmetics, and hygienic industrial applications.

Pure steam normally refers to a higher-purity steam system used in processes with stricter water and condensate quality requirements.

The correct solution should be selected according to:

• The final application
• Whether steam contacts the product directly
• Required condensate quality
• Validation requirements
• Local regulations
• Customer quality standards

Customers should not select equipment only according to the product name. The steam quality specification and process requirements are more important.

Why Choose NOBETH?

Founded in 1999, NOBETH specializes in steam generators and complete steam system solutions.

The company operates a modern manufacturing base and provides customized steam equipment for customers in food processing, medical sterilization, laboratories, chemical processing, commercial laundry, concrete curing, and other industries.

NOBETH can provide:

• Customized clean steam generator design
• Electric, gas, diesel, and steam-heated solutions
• SS304 and SS316L material options
• Water treatment systems
• Steam separation and filtration
• Pressure and flow control
• Steam distribution systems
• System flow diagrams
• Technical quotations
• Factory testing
• Operation manuals
• Installation guidance
• Overseas project support

Rather than supplying only one machine, NOBETH evaluates the customer’s complete process, including water supply, steam demand, pressure, pipe arrangement, equipment connection, condensate drainage, and operating conditions.

Frequently Asked Questions

Does every food factory need a clean steam generator?

Not every food process requires clean steam. However, clean steam should be considered when steam directly contacts food, packaging, tanks, pipelines, or hygiene-sensitive surfaces.

Is SS316L necessary for every clean steam system?

Not always. The material should be selected according to water quality, steam purity, product contact, corrosion risk, cleaning method, and customer standards.

Is reverse osmosis water always required?

No. Some applications may only require softened water, while direct product contact or higher hygiene requirements may require reverse osmosis or purified water.

Can clean steam be generated from ordinary industrial steam?

Yes. A secondary clean steam generator can use industrial steam as the heating source while keeping the clean steam side separated from the industrial steam side.

Can NOBETH provide a complete clean steam system?

Yes. The system can include water treatment, water tanks, clean steam generator, separator, filter, pressure control, flow control, steam header, pipelines, valves, and condensate discharge components.

What information is required for a quotation?

Please provide:

1. Application
2. Required steam capacity
3. Working pressure
4. Operating temperature
5. Whether steam directly contacts the product
6. Feedwater condition
7. Voltage, phase, and frequency
8. Preferred heating source
9. Installation country
10. Connected production equipment

Request a Clean Steam Solution

A clean steam system should be designed according to the actual production process, rather than selected only by steam capacity.

To receive a suitable model recommendation and technical quotation, please send NOBETH your steam demand, pressure, application, water quality, power supply, and equipment connection requirements.

Based on this information, the NOBETH technical team can prepare a customized clean steam generator configuration and complete system proposal for your project.