Pressure Drop of Irrigated Random and Structured Packings

Pressure Drop of Irrigated Random and Structured Packings 

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Model for Determining the Pressured Drop of Irrigated Random and Structured Packings 207... 

Model for Determining the Pressured Drop of Irrigated Random and Structured Packings, Based on the Known Resistance Coefficient t r for Single-Phase Flow and the Dimensionless Pressure Drop Ap/Apo... 

The advantage of determining the pressure drop of irrigated random and structured packings acc. to Eq. (4-48) lies in the fact that this method is applicable to a wide range of... 

The correlations for determining the pressure drop Ap/H of irrigated random and structured packings, presented in Sect. 4.3, lead to the following conclusions ... 

As described above, it is possible to determine the pressure drop Ap/H of irrigated random and structured packings relatively accurately for practical applications for the entire parameter range of the varied systems, packing elements and constructive variables ds and H, see Eq. (4-63). The mean errors 5 (Ap/H) relating to the individual packing systems can be found in Tables 4-4a-e. 

A generally valid Eq. (3-8) was derived to calculate the pressure drop of dry, non-irrigated, random and structured packings. 

The experimental vaUdation of the correlations developed to calculate the flooding point uv,Fi and the pressure drop of dry Apo/H and irrigated packings Ap/H was achieved by means of a systematic analysis of the random and structured packings, shown in Figs. 1-la and 1-lb. 

In 1990, a database was created for the purpose of evaluating aU experimental data, including literature data. It currently holds more than 1,200 experimental flooding point data, in excess of 1,100 Kquid hold-up data and more than 10,000 pressure drop data for irrigated random and structured packings. The number of test mixtures is 32. The result is a comprehensive data pool, which is constantly being updated with the addition of new experimental data. 

This chapter takes a closer look at the calculation of the pressure drop of the irrigated packed bed Ap/H for randomly filled and stacked packing elements as well as structured... 

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