Integrated design of a gas separation system for the upgrade of crude SNG with membranes

This paper investigates different design strategies and process layouts for upgrading crude synthetic natural gas (SNG) produced from lignocellulosic biomass to grid quality. The design problem is outlined by studying the involved key aspects with respect to the crude composition, purity requirements and process integration. A discussion of candidate technology identifies multistage membrane processes as a promising option, for which a multicomponent thermo-economic design model is coupled to a process model for SNG production. In a design study using multi-objective optimisation, the most promising membrane configurations are identified and optimised with respect to cost and efficiency. Comparing design strategies that consider different levels of process integration, it is shown that coupling the reactive and separation sections improves the process design. If process integration is not considered, the separation system is oversized by up to 60% and its investment cost is up to 46% too high. In the last part of the paper, the by-production of biogenic CO2 at sufficient purity for storage is investigated, which would turn the process into a CO2-sink for the atmosphere. The cost of captured CO2 is assessed between 15 and 40 EUR/ton, which makes it potentially more advantageous than the capture at a fossil fuel power plant.

[1]  Sukhvinder P.S. Badwal,et al.  Materials for separation membranes in hydrogen and oxygen production and future power generation , 2006 .

[2]  Waldo A. Steiner,et al.  Separation of Gases by Fractional Permeation through Membranes , 1950 .

[3]  François Maréchal,et al.  Thermodynamic comparison of the FICFB and Viking gasification concepts , 2009 .

[4]  José Manuel Domínguez,et al.  On the limits of gas separation in CO2/CH4, N2/CH4 and CO2/N2 binary mixtures using polyimide membranes , 2007 .

[5]  Li Liu,et al.  An industrial scale dehydration process for natural gas involving membranes , 2001 .

[6]  Sushil Adhikari,et al.  Hydrogen Membrane Separation Techniques , 2006 .

[7]  K. S. Knaebel,et al.  Landfill Gas: From Rubbish to Resource , 2003 .

[8]  May-Britt Hägg,et al.  Carbon molecular sieve membranes: a promising alternative for selected industrial applications. , 2003, Annals of the New York Academy of Sciences.

[9]  M. Mozaffarian.  FEASIBILITY OF BIOMASS / WASTE-RELATED SNG PRODUCTION TECHNOLOGIES , 2003 .

[10]  Jiri Hradil,et al.  Heterogeneous membranes based on polymeric adsorbents for separation of small molecules , 2004 .

[11]  Sun-Tak Hwang,et al.  Membranes in separations , 1975 .

[12]  Shivaji Sircar,et al.  Parametric Study of a Pressure Swing Adsorption Process , 2000 .

[13]  W. S. Winston Ho,et al.  CO2-selective polymeric membranes containing amines in crosslinked poly(vinyl alcohol) , 2006 .

[14]  L. Robeson,et al.  Correlation of separation factor versus permeability for polymeric membranes , 1991 .

[15]  J. A. Ritter,et al.  State‐of‐the‐Art Adsorption and Membrane Separation Processes for Hydrogen Production in the Chemical and Petrochemical Industries , 2007 .

[16]  Richard Turton,et al.  Analysis, Synthesis and Design of Chemical Processes , 2002 .

[17]  Alírio E. Rodrigues,et al.  Removal of Carbon Dioxide from Natural Gas by Vacuum Pressure Swing Adsorption , 2006 .

[18]  François Maréchal,et al.  Methodology for the design of industrial hydrogen networks and the optimal placement of purification units using multi-objective optimisation techniques , 2006 .

[19]  Neil B. McKeown,et al.  Gas separation membranes from polymers of intrinsic microporosity , 2005 .

[20]  Kristian M. Lien,et al.  A new robust design model for gas separating membrane modules, based on analogy with counter-current heat exchangers , 1994 .

[21]  Shivaji Sircar,et al.  Separation of Methane and Carbon Dioxide Gas Mixtures by Pressure Swing Adsorption , 1988 .

[22]  S. A. Stern,et al.  Membrane processes for the removal of acid gases from natural gas. I. Process configurations and optimization of operating conditions , 1993 .

[23]  François Maréchal,et al.  Process design of Synthetic Natural Gas (SNG) production using wood gasification , 2005 .

[24]  최대기,et al.  Kinetic Separation of Landfill Gas by a Two-Bed Pressure Swing Adsorption Process Packed with Carbon Molecular Sieve: Nonisothermal Operation , 2006 .

[25]  Michael A. Henson,et al.  Optimization-based design of spiral-wound membrane systems for CO2/CH4 separations , 1998 .

[26]  Palanichamy Gandhidasan,et al.  Parametric Analysis of Natural Gas Dehydration by a Triethylene Glycol Solution , 2003 .

[27]  Air and Gas Drying with Activated Alumina , 2006 .

[28]  Robert Spillman,et al.  Chapter 13 Economics of gas separation membrane processes , 1995 .

[29]  R. Ocampo-Pérez,et al.  Adsorption of Fluoride from Water Solution on Bone Char , 2007 .

[30]  Ali A. Al-Mubarak,et al.  Dehydration of natural gas using solid desiccants , 2001 .

[31]  R Rautenbach,et al.  The separation of multicomponent mixtures by gas permeation , 1985 .

[32]  François Maréchal,et al.  Methodology for the optimal thermo-economic, multi-objective design of thermochemical fuel production from biomass , 2009, Comput. Chem. Eng..

[33]  Ahmad Fauzi Ismail,et al.  A review on the latest development of carbon membranes for gas separation , 2001 .

[34]  François Maréchal,et al.  Thermo-economic optimisation of the integration of electrolysis in synthetic natural gas production from wood , 2008 .

[35]  Yi Li,et al.  MIXED MATRIX MEMBRANES (MMMS) COMPRISING ORGANIC POLYMERS WITH DISPERSED INORGANIC FILLERS FOR GAS SEPARATION , 2007 .

[36]  R. Baker.  Future directions of membrane gas separation technology , 2002 .

[37]  B. Metz.  IPCC special report on carbon dioxide capture and storage , 2005 .

[38]  Ralph T. Yang,et al.  A COMPARISON OF GAS SEPARATION PERFORMANCE BY DIFFERENT PRESSURE SWING ADSORPTION CYCLES , 1987 .

[39]  Henrik Thunman,et al.  Integration aspects for synthetic natural gas production from biomass based on a novel indirect gasification concept , 2008 .

[40]  William J. Koros,et al.  Improvement of CO2/CH4 separation characteristics of polyimides by chemical crosslinking , 1999 .

[41]  S. A. Stern,et al.  Membrane processes for the removal of acid gases from natural gas. II. Effects of operating conditions, economic parameters, and membrane properties , 1993 .

[42]  Chun Cao,et al.  Chemical cross-linking modification of 6FDA-2,6-DAT hollow fiber membranes for natural gas separation , 2003 .

[43]  Tracy Q. Gardner,et al.  High-Pressure CO2/CH4 Separation Using SAPO-34 Membranes , 2005 .

[44]  Sten Bay Jørgensen,et al.  Proceedings of the 16th European Symposium on Computer Aided Process Engineering and 9th International Symposium on Process Systems Engineering , 2006 .

[45]  R. T. Yang,et al.  Kinetic separation of methane—carbon dioxide mixture by adsorption on molecular sieve carbon , 1989 .

[46]  May-Britt Hägg,et al.  Carbon Molecular Sieve Membranes , 2003 .

[47]  R. Mahajan,et al.  Pushing the limits on possibilities for large scale gas separation: which strategies? , 2000 .

[48]  J. E. Hogsett,et al.  Estimate membrane system area , 1983 .

[49]  François Maréchal,et al.  Hydrothermal gasification of waste biomass: process design and life cycle asessment. , 2009, Environmental science & technology.

[50]  F. Maréchal,et al.  Thermo-economic process model for thermochemical production of Synthetic Natural Gas (SNG) from lignocellulosic biomass , 2009 .