AIChE Equipment Testing Procedure - Trayed and Packed - download pdf or read online

By American Institute of Chemical Engineers (AIChE)

This new version of a relied on consultant combines and updates the easiest to be had box wisdom on either trayed and packed distillation columns. in a single whole, straightforward quantity, it offers a compilation of innovations instead of a unmarried set of obligatory steps, permitting readers to choose the approach that most nearly fits their wishes. With its engineer-tested systems and distinct factors, the 3rd variation offers chemical engineers, plant managers, and different pros with firstclass suggestion on assessing and measuring functionality for quite a few distillation column forms in a number of functions.

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Extra info for AIChE Equipment Testing Procedure - Trayed and Packed Columns: A Guide to Performance Evaluation

Sample text

Measuring Pressure Drop with Purge Liquid Seal 30 Trayed and Packed Columns SEAL POT —ex- 3/r PRESSURE TAP UNE —CX- i X FILL LINE — X MANIFOLD VALVE XH-tX- LJ MANOMETER VALVE MANOMETER (OR DIFFERENTIAL PRESSURE INSTRUMENT) Figure 9. 3 Static Liquid Seal: A static liquid seal is used on columns where the process fluids must be kept out of the instrument lines, but where a continuous purge is impractical. The sealing liquid then should be immiscible with, and heavier than, the column liquid or condensate.

4 The containers should be inspected for cleanliness and leaks before use. Sample vessels should be pressure-tested if the sample is to be drawn and stored under pressure. 4 0 5 . 1 Sampling of a nontoxic stream that has no component boiling lower than 200°F (93°C) can normally be done in open containers that are immediately stoppered. For a vapor sample, it should be condensed and cooled to at least 80°F (27°C) as it is withdrawn to prevent flashing. 2 The sample line should first be flushed out to a safe place (or used to rinse the container) with a volume of liquid that is three or four times the dead space of the connections.

During purging, the sample valve is throttled to prevent exceeding the maximum sample pressure. The sample container valves are closed when at least three times the volume of the sample line and container has been purged through. 4 Samples taken into evacuated sample vessels: When this method is used, the sample line is purged and then the evacuated sample 39 AlChE Equipment Testing Procedure PRESSURE GAUGE SAMPLE —CX3— BLOCK VALVE 2. -CÏ3SAMPUNG VALVE SAMPLE CONTAINER Figure 12. Sampling Vapors by Purging vessel is attached to the sample line with suitable fittings.

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