If you’re new to working with distillation columns, you might hear someone mention an “analysis 10-dish plate.” It may sound like a type of tray or a part of the equipment, but what exactly is it for?
In this article, we’ll explain what an analysis 10-dish plate is, how it’s used in distillation columns, and why it matters—especially when you need to take liquid samples from different points in the column, like the top or bottom. No advanced knowledge needed!
🧪 What Is an Analysis 10-Dish Plate?
An analysis 10-dish plate is a special type of tray installed in a distillation column. It’s used mainly for sampling the liquid at a specific point inside the column.
Despite the name, it doesn’t always have exactly 10 trays—it refers more to the sampling purpose than the exact count. Most commonly, it’s placed near the top or bottom of the column, where sampling is needed for lab analysis.
🔍 Why Is Sampling Important?
In a distillation column, liquid and vapor move between trays to separate chemical components. Engineers need to know how well the separation is working, and sampling helps check the concentration of components at different heights.
By taking samples at the analysis plate, engineers can:
- Check product quality
- Monitor separation performance
- Adjust operating conditions if needed
🏗️ Where Is the Plate Installed?
The analysis plate is usually placed at one of these locations:
- Top tray area (overhead): to sample the final light component
- Bottom tray area (reboiler return): to sample the heavy component
In some columns, there might be analysis trays in the middle, too, depending on process needs.
🧰 How Do You Take a Sample?
The plate has a sampling nozzle or port, which connects to a sampling line. This allows operators to safely collect liquid from inside the column, usually while the column is still running.
The sample is then sent to the lab for analysis—checking things like component concentration, purity, or even physical properties.
📌 Don’t Confuse It with Other Trays
Not all trays in the column are used for sampling. Most are just for separation. The analysis tray is special because it’s connected to a sampling line and used for measurement, not just operation.
✅ Summary
- An analysis 10-dish plate is a special tray in a distillation column used to take liquid samples.
- It helps engineers check the condition and quality of the process at certain heights in the column.
- Samples are taken through a nozzle and sent to the lab for testing.
- Despite its name, it may not have exactly 10 trays—it’s just a label for sampling trays.