This blog will present application solutions and equipment used in process heating. Components such as temperature controls, thermocouples, gas pressure regulators and flow meters, to complete industrial burner systems will be discussed. We hope to educate on current technologies, introduce unique process heating applications, and present new industrial heating/process products. For more, please visit Combustion Technology or call 800-327-1831.
Working Closely with a Combustion Controls Expert: The Key to Optimal Industrial Combustion Systems
Siemens Combustion Controls HFV Series Control Valves for Feedwater and Steam Flow
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Seeking Alternatives: A Drop-in Replacement in Response to the Discontinuation of Eclipse Veri-Flame
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UL508A Control Panels for Modern Process Heating Systems
What is UL508A?
What is a UL508A Control Panel?
How is a UL508A Control Panel Used in Industrial Heating and Combustion Applications?
- Temperature Control: The control panel can regulate the temperature of a furnace, boiler, or oven by adjusting the fuel supply or the operation of heating elements, ensuring that the equipment operates within a safe and desired temperature range.
- Safety Monitoring: The panel can continuously monitor various safety-related parameters. For instance, it can monitor pressure levels inside a boiler or the oxygen level in a combustion chamber. If any of these parameters fall outside of safe limits, the control panel can automatically sound an alarm or even shut down the equipment.
- Sequential Control: In many industrial processes, various stages of the operation must occur in a specific sequence. The control panel can ensure that, for example, a specific valve doesn't open unless a particular temperature is achieved.
- Data Logging: The control panel can record operational data over time, such as temperature profiles, fuel consumption, or emission levels. This data can be crucial for troubleshooting, performance analysis, or compliance with regulatory requirements.
- Interfacing with Other Systems: UL508A control panels can communicate with other systems in the facility, such as building management systems or emergency shutdown systems, ensuring that the heating or combustion system operates harmoniously with the broader environment.
- User Interface: Modern control panels often come with intuitive interfaces that allow operators to set parameters, view current operational data, or respond to alarms. These interfaces can be physical (like buttons or touchscreens) or digital (accessible via a computer or mobile device).
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Revolutionizing Industrial Heating: The Selas Superflame™ High Velocity Low NOx Burner
A high velocity burner is an industrial combustion device that produces a high-velocity flame. This type of burner is particularly beneficial in applications requiring higher heat transfer rates or where the flame needs to penetrate deeply into the process media. The high velocity ensures better mixing of the fuel and air, leading to efficient combustion and uniform heating.
Some key features of high velocity burners include:
- Improved Heat Transfer: Due to the high velocity of the flame, there is an increased heat transfer rate from the flame to the material, leading to quicker heating cycles and improved process efficiency.
- Penetration: The forceful nature of the flame allows it to penetrate deeply into materials or cavities, ensuring uniform heating, which is particularly useful in processes like forging or certain types of melting applications.
- Reduced Scale Formation: In metal heating processes, the formation of scale (an oxide layer) on the metal surface is a concern. The high-velocity flame can reduce the formation of this scale, leading to better product quality.
- Efficient Combustion: The combustion process in a high-velocity burner is often more complete due to better mixing of fuel and air, meaning fewer unburned hydrocarbons and lower emissions.
Selas, headquartered in Streetboro, Ohio, manufactures industrial burners and serves the industrial thermal processing industry by offering various innovative and reliable gas burners, combustion systems, and thermal components. Their new product, the Superflame™ Low NOx Medium & High Velocity Burner, is constructed with an outer tube from advanced silicon carbide. The inner firing tube consists of stainless steel alloy. The high-velocity burner uses two-stage combustion to achieve low NOx emissions. Specifically designed nozzles facilitate excellent NOx-inhibiting combustion in the first stage. The second stage sees combustion products exiting at speeds exceeding 275fps (83mps) for medium velocity and 400fps (122mps) for high velocity.
The Superflame™generates heat in dense loads and circulates it within the furnace, ensuring faster and more consistent heating. Superflame's medium and high-velocity burners operate effectively with either ambient or preheated combustion air, reaching temperatures up to 700°F (371°C). They also feature durable, lightweight, and self-supporting SiC firing tubes. These burners fit perfectly in brick and fiber wall furnaces and attach easily to the furnace, are compatible with ultraviolet detectors, and most models also accommodate a flame rod. The inclusion of a direct spark offers more flexibility in control system design.
For more information about the Superflame™in the Pacific Northwest, contact Combustion Technology, LLC. Call them at 800-327-1831 or visit https://combustion-tech.net.
The Perfect Fit: Siemens Combustion Controls HFV Series Control Valves for Boiler Applications
- Feedwater Flow Control: The feedwater, which is water fed into the boiler for conversion into steam, must be carefully controlled. A modulating control valve regulates feedwater flow into the boiler, which is critical because the amount of feedwater entering the boiler should match the steam demand from the process. If the feedwater supply is too low, the boiler can run dry, causing damage to the boiler tubes and other components. Conversely, the feedwater supply is too high, which can cause overfilling and unnecessary pressure on the boiler.
- Steam Flow Control: The steam generated in the boiler provides various processes like heating, power generation, etc. The modulating control valve regulates the steam flow from the boiler to the process. It adjusts the steam flow rate according to the process requirements, ensuring the process receives the correct amount of steam at the required pressure and temperature.
HFV Series Control Valve Features
- Up to 150 psi differential across the valve when modulating.
- High close-off pressure.
- Stainless steel body, stem, and plug.
- Linear or equal percentage flow characteristic.
- ANSI Class IV shutoff.
- Fail closed.






