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1. Conceptual design of an autonomous once-through gas-to-liquid process — Comparison between fixed bed and microchannel reactors

Author:
Dalane, Kristin,   et al.   ; Ostadi, Mohammad; Rytter, Erling; Hillestad, Magne;     Show all 4 Authors
Source:
Fuel processing technology 2015 v.139 pp. 186-195
ISSN:
0378-3820
Subject:
Fischer-Tropsch reaction; air; heat transfer; heaters; hydrogen; liquids; methane; natural gas; nitrogen; oxidants; power generation; steam; synthesis gas
Abstract:
... A novel process concept is proposed for converting natural gas to liquid Fischer–Tropsch products. An autothermal reformer with enriched air as oxidant is applied for synthesis gas (syngas) production, and because of the inert nitrogen a once-through Fischer–Tropsch synthesis is the preferred option. In order to maximize the syngas conversion and the production of heavy hydrocarbons, a staged reac ...
DOI:
10.1016/j.fuproc.2015.07.022

2. Membrane contactor for subsea natural gas dehydration: Model development and sensitivity study

Author:
Dalane, Kristin,   et al.   ; Svendsen, Hallvard F.; Hillestad, Magne; Deng, Liyuan;     Show all 4 Authors
Source:
Journal of membrane science 2018 v.556 pp. 263-276
ISSN:
0376-7388
Subject:
absorbents; artificial membranes; gases; laminar flow; liquids; mathematical models; model validation; natural gas; permeability; porosity; solvents; temperature; triethylene glycol; turbulent flow; uncertainty
Abstract:
... A mathematical model of a membrane contactor using triethylene glycol (TEG) for dehydration of natural gas at subsea operation conditions has been developed. The goal for the membrane contactor is to dehydrate the natural gas to transport pipeline specifications, which are −19 °C at 69 barg. The membrane contactor model is based on a hollow fiber configuration with the gas in the shell side and th ...
DOI:
10.1016/j.memsci.2018.03.033

3. Thermopervaporation for regeneration of triethylene glycol (TEG):Experimental and model development

Author:
Dalane, Kristin,   et al.   ; Josefsen, Natalie Therese; Ansaloni, Luca; Hillestad, Magne; Deng, Liyuan;     Show all 5 Authors
Source:
Journal of membrane science 2019 v.588 pp. 117205
ISSN:
0376-7388
Subject:
air; artificial membranes; distillation; ecological footprint; energy use and consumption; liquids; mathematical models; natural gas; oil and gas industry; oils; permeability; pervaporation; temperature; triethylene glycol
Abstract:
... Subsea processing is getting increased interest in the oil and gas sector as it can provide broader exploration of the oil and gas with a lower environmental footprint. Dehydration of natural gas with the use of triethylene glycol (TEG) is one of the main processing step for natural gas treatment to avoid transportation problems caused by the presence of water. Distillation is a commonly used tech ...
DOI:
10.1016/j.memsci.2019.117205