PubAg

Main content area

You searched for: Author "Hillestad, Magne" Remove constraint Author: "Hillestad, Magne" Subject carbon dioxide Remove constraint Subject: carbon dioxide
Start Over

Search

6  Search Results

1 - 6 of 6
Number of results to display per page

Search Results

1. Boosting carbon efficiency of the biomass to liquid process with hydrogen from power: The effect of H2/CO ratio to the Fischer-Tropsch reactors on the production and power consumption

Author:
Hillestad, Magne,   et al.   ; Ostadi, Mohammad; Rytter, Erling;     Show all 3 Authors
Source:
Biomass and bioenergy 2019 v.127 pp. 105282
ISSN:
0961-9534
Subject:
Fischer-Tropsch reaction; biomass; carbon; carbon dioxide; carbon monoxide; energy; energy use and consumption; fuel production; fuels; gasification; hydrogen; kinetics; liquids; models; partial pressure; renewable energy sources
Abstract:
... Carbon efficiency of a biomass to liquid process can be increased from ca. 30 to more than 90% by adding hydrogen generated from renewable power. The main reason is that in order to increase the H2/CO ratio after gasification to the value required for Fischer-Tropsch (FT) synthesis, the water gas shift reaction step can be avoided; instead a reversed water gas shift reactor is introduced to conver ...
DOI:
10.1016/j.biombioe.2019.105282

2. Screening Cellulose Spinning Parameters for Fabrication of Novel Carbon Hollow Fiber Membranes for Gas Separation

Author:
Hillestad, Magne,   et al.   ; Lei, Linfeng; Lindbråthen, Arne; Sandru, Marius; Favvas, Evangelos P.; He, Xuezhong;     Show all 6 Authors
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.29 pp. 13330-13339
ISSN:
1520-5045
Subject:
acetates; air; carbon; carbon dioxide; cellulose; dimethyl sulfoxide; methane; nitrogen; oxygen; permeability; process design; screening; spinning
Abstract:
... Novel carbon hollow fiber membranes (CHFMs) have been, for the first time, prepared from cellulose precursors directly spun with a cellulose/(1-ethyl-3-methylimidazolium acetate (EmimAc) + dimethyl sulfoxide (DMSO)) system. The spinning parameters such as air gap, dope and bore flow, bore fluid composition, and take-up speed are investigated by a factorial design method to screen hollow fiber prec ...
DOI:
10.1021/acs.iecr.9b02480

3. Carbon molecular sieve membranes for biogas upgrading: Techno-economic feasibility analysis

Author:
Hillestad, Magne,   et al.   ; He, Xuezhong; Chu, Yunhan; Lindbråthen, Arne; Hägg, May-Britt;     Show all 5 Authors
Source:
Journal of cleaner production 2018 v.194 pp. 584-593
ISSN:
0959-6526
Subject:
absorption; adsorption; biogas; carbon; carbon dioxide; cost effectiveness; methane; natural gas; Europe
Abstract:
... Biomethane, produced by biogas upgrading, has a great potential to replace part of the fossil fuel natural gas, and may be injected into a gas grid or used as compressed biomethane as vehicle fuel. The state-of-the-art technologies for biogas upgrading in the European region are water scrubbing, pressure swing adsorption and chemical absorption, however, high performance carbon membranes may also ...
DOI:
10.1016/j.jclepro.2018.05.172

4. Optimization and Characterization of an Amino Acid Ionic Liquid and Polyethylene Glycol Blend Solvent for Precombustion CO2 Capture: Experiments and Model Fitting

Author:
Hillestad, Magne,   et al.   ; Usman, Muhammad; Huang, Huang; Li, Jun; Deng, Liyuan;     Show all 5 Authors
Source:
Industrial & Engineering Chemistry Research 2016 v.55 no.46 pp. 12080-12090
ISSN:
1520-5045
Subject:
absorbents; absorption; amino acids; carbon dioxide; industrial applications; ionic liquids; models; polyethylene glycol; solubility; temperature; thermal stability; vapor pressure; viscosity
Abstract:
... Amino acid ionic liquids are green solvents with low toxicities and properties suitable for precombustion CO₂ capture, such as high CO₂ absorption, good thermal stability, and negligible vapor pressure. However, their high viscosities and relatively high costs have hampered their industrial applications. In this work, we systematically studied the amino acid ionic liquid tetrabutylphosphonium glyc ...
DOI:
10.1021/acs.iecr.6b02457

5. Natural Gas Combined Cycle Power Plant Integrated to Capture Plant

Author:
Hillestad, Magne,   et al.   ; Karimi, Mehdi; Svendsen, Hallvard F.;     Show all 3 Authors
Source:
Energy & Fuels 2012 v.26 no.3 pp. 1805-1813
ISSN:
1520-5029
Subject:
carbon dioxide; electric energy consumption; energy; generators (equipment); heat; natural gas; power plants; solvents; steam
Abstract:
... A natural gas combined cycle (NGCC) power plant with capacity of about 430 MW integrated to a chemical solvent absorber/stripping capture plant is investigated. The capture ratio is 90%, and the captured CO₂ is compressed to 75 bar, liquefied, and finally pumped up to 110 bar. Both full load and partial load conditions are studied. The energy penalty for CO₂ capture is 398.4 kWhel/ton of CO₂, whic ...
DOI:
10.1021/ef201921s

6. Process concepts to produce syngas for Fischer–Tropsch fuels by solar thermochemical splitting of water and/or CO2

Author:
Hillestad, Magne,   et al.   ; Rytter, Erling; Soušková, Kateřina; Lundgren, Mathias Kristoffer; Ge, Wei; Nannestad, Åsne Daling; Venvik, Hilde Johnsen;     Show all 7 Authors
Source:
Fuel processing technology 2016 v.145 pp. 1-8
ISSN:
0378-3820
Subject:
Fischer-Tropsch reaction; aluminum oxide; carbon dioxide; carbon monoxide; catalysts; cobalt; energy; ferrimagnetic materials; fuels; heat exchangers; hydrogen; nitrogen; oxygen; probability; synthesis gas; temperature
Abstract:
... Process concepts for making synthesis gas by solar thermochemical cycling have been screened. The produced gas is delivered at 70°C, 5bar pressure and with a H2/CO ratio of 2.0 which, with moderate adjustments, fit specifications of Fischer–Tropsch synthesis using a cobalt-based catalyst. The cobalt ferrite/alumina assisted hercynite cycle run adiabatically between 1350 and 1330°C was selected for ...
DOI:
10.1016/j.fuproc.2016.01.015