Gas Phase Train in Upstream Oil & Gas Fields: PART-I Model Development

The prime contribution of this paper is to provide a large scale system (LSS) model for the gas phase operation in upstream oil and gas plants. The process model consists of the three main gas conditioning processes which exist in most upstream oil and gas processing plants; these are gas sweetening, gas dehydration, and hydrocarbon dew-pointing. The function of such a model is to provide a realistic process representation to test and verify different process control approaches, specifically those which deal with highly interactive control loops

Interplay Between Bromine and Iodine in Oxidative Dehydrogenation

Oxidative dehydrogenation is a promising way to produce olefins, diolefins and aromatics. However, the product yield is limited by the consecutive oxidation of the product to oxygenated products. The highest yield reported for propane oxidative dehydrogenation is only about 30%. Alternatively, halogens can be used as oxidants in oxidative dehydrogenations. Although the iodine process is highly selective, it requires very high reaction temperatures (≈900K) to give a good yield of C3H6+C3H7I, and iodine is too expensive for industrial deployment. Bromine is a more reactive oxidant but less selective towards C3H6 and C3H7Br. We show that the use of bromine-iodine mixtures with low iodine content (no greater than 20%) results in up to 80% of C3H6+C3H7X single-pass yield at moderate reaction temperatures (<800K). The results are promising for developing a low temperature on-purpose propylene technology. Furthermore, the underlying chemistry might be extended to the synthesis of many other commercially desirable unsaturated hydrocarbons. © 2013 WILEY-VCH Verlag GmbH & Co

Enthalpy measurement of coal-derived liquids. Quarterly technical progress report, July-September 1980

Equipment modifications to a Freon 11 boil-off type calorimeter are described. The calorimetric system was used to measure the enthalpies of thiophene experimentally. Data were taken over a temperature range of 100/sup 0/F to 750/sup 0/F at pressures of 50, 100, 200, 400, 600, 825.9 (the critical), 1000, and 1500 psia. Thermodynamic properties derived from the data are compared to values in the literature, and the agreement is exceptionally good. The data are then compared directly to results calculated by means of two correlations: a modification of the BWR equation of state by Kesler and Lee, and a modified SRK equation of state method. Both correlations are found to work well in predicting the enthalpy of thiophene