Condensate Recovery and Steam Traps
Whenever steam condenses in a process, it creates hot liquid condensate. It is the role of steam traps to remove condensate from steam lines and process equipment with a minimum loss of live steam. The condensate has economic value, so it is typically collected and reused. This module discusses the collection and re-use of condensate in a steam generation system. Three major classifications of steam traps are discussed, including their principles of operation, and their strengths and weaknesses.
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Course Details
Learning Objectives
• Identify the difference between raw water, steam and condensate • Describe the benefits of recycling condensate • Describe the treatment of collected condensate • Describe the purpose of a steam trap • Identify the benefits of steam traps • Identify the three classes of steam traps • List some of the considerations in selecting a steam trap • Describe the need to monitor steam trap operation • Describe safety concerns associated with steam traps
Specs
Frequently Asked Questions
When water is boiled, where does the heat energy go?
Why is condensate collected in steam generation processes?
What are the three general classifications of steams traps?
Why is it important to monitor steam traps?
What are some considerations that need to be taken into account when selecting a steam trap?
Sample Video Transcript
Mechanical steam traps rely on the density difference between steam and condensate to operate. One common mechanical trap is called an F&T or float-and-thermostatic trap. In this trap, the inlet is near the top of the body and the outlet is near the bottom. A float on a hinge moves a valve plug which controls the flow of condensate through an orifice in the outlet. The float is positioned such that when the level of the condensate in the body is slightly above the outlet orifice, the valve is closed. As more condensate enters the body, the float rises, pulls the valve plug away, and opens the orifice. Any steam entering the body must force condensate out before it can escape. But as the condensate level falls the orifice closes and the steam is contained.
