Column reboilers

A heat exchanger positioned near the bottom of the distillation column re-heats and vaporizes liquid and reintroduces the vapor several trays higher. This improves separation by introducing more heat into the column. For effective functioning of the reboiling process, level monitoring of the reboiler is required.

Challenge

In some steam reboilers, the level must be controlled so that only a percentage of tubes are covered. This allows a control scheme to regulate the heat transfer in the reboiler by controlling the percentage of the reboiler tubes covered by liquid. This is a critical control loop as heat transfer into the liquid is a strong function of the percentage of tubes covered.

Related products

Orion Instruments

Atlas™ magnetic level indicator

The AtlasTM is our standard, high performance magnetic level indicator. The ATLAS is a single-chamber design, with either 2", 2.5", or 3" chamber diameter, as required by the application. There are twelve basic configuration styles, including top mount models.

ATLAS magnetic level indicators are produced in a wide range of materials of construction, including exotic alloys and plastics. We also offers one of the most complete selections of process connection types and sizes for level measurement.

The ATLAS unit may be equipped with a variety of level transmitters and switches, as well as flag and shuttle indicators with or without stainless steel scales. This enables the ATLAS magnetic level indicator to be a complete level and monitoring control.

Orion Instruments

Aurora® magnetic level indicator

The Aurora® combines the operating system of a conventional float-based magnetic level indicator (MLI) with the leading-edge Eclipse® guided wave radar transmitter developed for level measurement applications. The result is true level-measurement redundancy in a single-chamber design.

Using a 3" or 4" chamber to house both the Eclipse probe and the MLI float, these devices operate seamlessly to provide continuous electronic guided wave radar measurement and visual indication. There are six basic configuration styles and more than 15 material selections for the Aurora magnetic level indicator.

For the first time ever, the ability to accurately and repeatedly measure ultra low dielectric media, high temperature/high pressure process conditions, and media with shifting and changing dielectric values can be accomplished with Aurora.

Orion Instruments

Gemini^™ magnetic level indicator

The Gemini MLI offers innovative level measurement in a special twin-chamber design. A magnetic float and high-visibility indicator in the primary chamber operate indepently of the Eclipse^® Guided Wave Radar transmitter in the secondary chamber. This use of two differing technologies adds a layer of redundancy similar to the Aurora model.

Gemini's magnetic indicator chamber can be equipped with switches and additional transmitters for expanded capability. Isolation vales are also easily implemented between both chambers to provided flexibility while fulfilling periodic maintenance procedures.

Other applications

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