Remove water droplets entrained in steam or air with TLV's DC series steam separators and air separators.
The DC cyclone separators can be installed on steam lines, air lines, and at the inlet side of equipment to enable removal of virtually all water droplets within the flow. This can significantly improve heat quality, preventing problems such as:
- Low Heating Efficiency
- Product Defects or Off-spec
- Erosion of piping or valve parts, and other related problems
Why a Separator is Necessary
Drip legs are designed to remove a considerable portion of the condensate flowing through piping – that which has fallen out of the steam or air flow, but cannot remove the water droplets entrained within the flow itself.
Entrained condensate is not all discharged
These droplets may lead to problems such as erosion of valve parts and piping from liquid droplet impingement (LDI) and product defects from water droplets creating cold spots on steam heating surfaces or actually coming in direct contact with the product. In steam heating processes, the thickness of the water film significantly reduces heating, so removing as much water as possible will provide a more effective overall improvement.
Cut-view of Condensate Discharge Through Drip Leg
Negative Impact of Condensate Droplets in Steam Processes
Elbow in Piping
Direct Heating Application
Negative Impact of Condensate Droplets in Air Processes
DC Series Separator Features
The DC series separators use a cyclone separator to separate and remove water droplets from steam and air with 98% efficiency. High velocity centrifugal force and directional changes are key factors that enable such a high degree of separation.
Built-in Free Float® Trap
The Free Float® enables continuous discharge of condensate while still keeping a steam-tight / air-tight seal. This rapid discharge design with no back-up is essential to prevent condensate from being re-entrained into the steam or air flow.
Cut-view of DC Series Separator
Separating Condensate from Steam/Air
DC Series: Up to 98% Separation Efficiency
Effect of Flow Rate on Separation Efficiency
Sample Calculation: Steam Dryness Improvement of 10% Wet Steam at 10 barg (145 psig)
When calculated, the increase in steam dryness is quite significant, reaching up to 99.8% steam dryness as shown in the sample calculation below:
- Total Latent Heat of 10% Wet Steam = 1999 kJ/kg · 0.9 = 1799 kJ/kg [860 BTU/lb · 0.9 = 774 BTU/lb]
- 10% Wetness Loss = 200 kJ/kg [86 BTU/lb]
- Removing 98% of Wetness = 1799 kJ/kg + (200 kJ/kg · 0.98) = 1995 kJ/kg [774 BTU/lb · (86 BTU/lb · 0.98) = 858 BTU/lb]
- Improved Steam Dryness = 99.8% (1995 kJ/kg / 1999 kJ/kg [858 BTU/lb / 860 BTU/lb])
- Heating Efficiency Improved / Time Reduced
- Cold Spots Removed / Heating Quality Improved
For additional Information about Dry Steam, please read:
For Steam Applications
- Steam distribution lines
- Steam heating processes (indirect heating):
- Reaction kettles, dryers, heat exchangers, jacketed vessels, presses, etc.
- Steam heating processes (direct heating):
- Steamers, cookers, cylinder dryers, kneaders, steam atomization systems, etc.
For Air Applications
- Air distribution lines
- Before Filtration
- Air processes:
- Coaters, etc.
DC Series Line-up
|Model||Appearance||Fluid Type||Max Operating Pressure (psig)||Body Material||Specifications|
|DC3S||Steam||300||Ductile Cast Iron||View All|
|DC3A||Air||300||Ductile Cast Iron||View All|
|DC7*||Steam or Air||362||Cast Stainless Steel||View All|
|DC-L, DC-LS, DC-LUS*||550||Carbon Steel|
* Require a separate steam trap.