A stochastic model to describe the design and operation of knitted mesh mist eliminators
- UMIST, Manchester (United Kingdom)
Methods used to design and predict the performance of mist eliminators are deficient in their inability to predict the outlet concentration of dispersed liquid in the outlet gas stream. This is a requirement specified in many process applications especially in gas treatment prior to atmospheric dispersion. In this paper a model is proposed, based on determining the trajectory of droplets through a knitted mesh mist eliminator, from which both the outlet gas concentration and drop size distribution in this gas stream can be specified. The model predicts the expected variations in performance, a decrease in the separation efficiency with decreasing both drop size in the feed mixture and gas velocity. A limiting velocity is predicted at which the drainage of liquid from the pad decreases. This corresponds to the flooding condition. Quantitative predictions of this limiting velocity compare well with the experimental results measured for air-water systems. The model offers the prospect of optimizing the pad construction to maximize the separation efficiency at a target pressure drop or designing to a maximum pressure drop. For all designs, the conditions of the outlet gas steam can be defined.
- OSTI ID:
- 468266
- Report Number(s):
- CONF-961003-; TRN: 96:006577-0071
- Resource Relation:
- Conference: 71. annual technical conference and exhibition of the Society of Petroleum Engineers, Denver, CO (United States), 6-9 Oct 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 SPE annual technical conference and exhibition: Production operations and engineering/general; PB: 892 p.
- Country of Publication:
- United States
- Language:
- English
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