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Wednesday, July 22, 2020 | History

2 edition of one-dimensional model for in situ coal gasification found in the catalog.

one-dimensional model for in situ coal gasification

C. B. Thorsness

one-dimensional model for in situ coal gasification

by C. B. Thorsness

  • 285 Want to read
  • 37 Currently reading

Published by Dept. of Energy, Lawrence Livermore Laboratory, for sale by the National Technical Information Service] in Livermore, Calif, [Springfield, Va .
Written in English

    Subjects:
  • Coal gasification, Underground -- Mathematical models.

  • Edition Notes

    StatementC. B. Thorsness, E. A. Grens, and A. Sherwood.
    SeriesUCRL ; 52523
    ContributionsGrens, E. A., Sherwood, A., Lawrence Livermore Laboratory.
    The Physical Object
    Paginationiii, 51 p. :
    Number of Pages51
    ID Numbers
    Open LibraryOL15233903M

    gasification by means of a comprehensive 1-dimensional model. The influence of bed material circulation, biomass reactivity and gas mixing on the degree of char conversion are studied. 2. MODEL DESCRIPTION In this work, the dense bed of an indirect biomass gasifier is modelled in one, the horizontal, dimension, Fig. 1. Reduction in packed bed of iron ore and coal under one-dimensional heating: experimental results and modelling T. Coetsee1 and P. C. Pistorius*2 Packed beds of coal and iron ore (mostly in the size range mm) were heated by thermal radiation to the bed surface, to test possible rate determining steps, the effect of coal volatiles.

    "In-Situ Combustion Model" In Soc. of Petr. Eng. Journal, Rubin, B and Vinsome P.K.W.: "The Simulation of In-Situ Combustion Process in in One Dimension Using A Highly Implicit Finite-Difference Scheme" In Journ of Canadian Petr. Techn No. 4, Oct-Dec This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation.

    Bruining, J. (a.o.) “Underground Coal gasification in Europe”, Report of the European Working Group for Underground Coal Gasification to the EEC (). Bruining, J., Palmgren, C.T.S., and Kleijn, P.H van der.: “Competition between steam drive and water drive for the recovery of low viscosity oils”, Report of the Delft University of. In-Situ Combustion Model. Keith H. Coats, Intercomp Resource Development and Engineering Inc. Abstract This paper describes a numerical model for simulating wet or dry, forward or reverse combustion in one, two, or three dimensions. The formulation is considerably more general than any reported to date. The model allows any number and identities of components.


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One-dimensional model for in situ coal gasification by C. B. Thorsness Download PDF EPUB FB2

@article{osti_, title = {One-dimensional model for in situ coal gasification}, author = {Thorsness, C B and Grens, E A and Sherwood, A}, abstractNote = {This report presents a calculational model that describes certain aspects of the in situ gasification process. The primary aim of this preliminary work was to predict and correlate reaction and thermal-front.

Get this from a library. A one-dimensional model for in situ coal gasification. [C B Thorsness; E A Grens; A Sherwood; United States.

Department of Energy.]. In Environmental Impacts of Coal Mining & Utilization, Basic Principles. Coal gasification means the complete conversion of coal into gas using heterogeneous gas solid reactions. The main process is the reaction of the carbon of coal with steam, at pressures below 10 MPa and temperatures above °C, to form a “synthesis gas” containing mainly CO and.

A one-dimensional time-dependent computational model has been developed as a pilot study for the multidimensional simulation of coal gasification in a packed bed, treated as a porous medium. A one-dimensional mathematical model for the chemical reaction of a semi-infinite block of coal has been developed and is applied to the problem of.

power generation from Integrated Gasification Combined Cycle (IGCC) plant. There are three main types of coal gasifiers namely, moving (also known as fixed) bed, fluidised bed and entrained flow. In a moving bed gasifier, the coal is fed through the top of the gasifier and the oxygen and steam usually from the bottom.

This paper discusses the optimization and control of the one dimensional (1-D) packed bed model of underground coal gasification (UCG) process for an actual UCG site. The optimization is performed to compensate for the uncertainty in coal and char ultimate analysis (caused by repeated measurements of different samples) and in steam to oxygen (O Cited by: 7.

Abstract. Underground coal gasification is an in situ coal utilization technique that has immense potential as a future clean coal technology. UCG possesses a number of advantages including the ability to use deep and unmineable : Preeti Aghalayam.

@article{osti_, title = {Preliminary laboratory and modeling studies on the environmental impact of in-situ coal gasification}, author = {Campbell, J H and Washington, H}, abstractNote = {A preliminary laboratory and modeling study on the environmental impact of ''in-situ'' coal gasification field testing is reported.

Experiments were conducted on the aspects of ground. Underground coal gasification (UCG) has been identified as an environmentally friendly technique for gasification of deep un-mineable coal seams in situ.

This technology has the potential to be a clean and promising energy provider from coal seams with minimal greenhouse gas emission. The UCG eliminates the presence of coal miners underground hence, it is Cited by: 9.

In underground coal gasification, the reaction takes place on reasonably large sized coal particles, wherein diffusion effects are significant. A one-dimensional reaction diffusion model is therefore developed in order to determine the diffusional resistance in the coal particle, and values of diffusivity are by: A mathematical model of a process of coal gasification in a one-dimensional steady flow in the form of a system of ordinary differential equations of energy and changes in the concentrations of the reactants is represented in this paper.

Model is based on the kinetics of chemical reactions that determine the process. The offered. viii and approaches could be adapted to other coal conversion and combustion problems, we have not considered combustion or gasification in fluidized or fixed beds or in situ processes.

In addition, we have not considered other fossil-fuel combustion problems associated with oil shale, tar sands, etc., even though many aspects of pulverized.

model for in situ coal gasification; Lawrence Livermore; 4)iy, ni, yam. Reactor Model for the Underground Coal Gasification (UCG) Channel; International journal of Chemical Reactor Engineering; Volume 4, Article A37, The objective of this work is to develop a two-dimensional model of.

Underground Coal Gasification (UCG) is the process of in-situ conversion of coal into combustible products (syngas) which can be used either as fuel or as a chemical feedstock. In this study, the gasification channel is viewed as a one-dimensional packed bed by: By igniting in the coal seam and injecting gas agent, underground coal gasification (UCG) causes coal to undergo thermochemical reactions in situ and, thus, to be gasified into syngas for power generation, hydrogen production, and storage.

Compared with traditional mining technology, UCG has the potential sustainable advantages in energy, environment, and the by: 2. Pulverized-Coal Combustion and Gasification: Theory and Applications for Continuous Flow Processes David T.

Pratt (auth.), L. Douglas Smoot, David T. Pratt (eds.) viii and approaches could be adapted to other coal conversion and combustion problems, we have not considered combustion or gasification in fluidized or fixed beds or in situ processes.

The chapter presents basic principles of one-dimensional gas chromatography (1D-GC) and comprehensive two-dimensional gas chromatography (GC × GC) related to the main advantages of the two-dimensional technique, as well as its application to the study of organic compounds in liquids derived from coal, mainly through pyrolysis and : Gabriela Pereira da Silva Maciel, Juliana Macedo da Silva, Mozart Daltro Bispo, Laiza Canielas Kraus.

Get this from a library. Pulverized-Coal Combustion and Gasification: Theory and Applications for Continuous Flow Processes. [L Douglas Smoot; David T Pratt] -- Viii and approaches could be adapted to other coal conversion and combustion problems, we have not considered combustion or gasification in fluidized or fixed beds or in situ processes.

Development and validation of a reduced one-dimensional model for accelerated simulation of coal gasification. 9th International Freiberg Conference on IGCC & XtL Technologies, Berlin, Germany.

The combined FG-DVC model was integrated with BYU`s comprehensive two-dimensional reactor model for combustion and coal gasification, PCGC-2, and a one-dimensional model for fixed-bed gasifiers, FBED Progress utilizing these models is : P.R.

Solomon, Serio, D.G. Hamblen.The technical feasibility of underground coal gasification (UCG) has been established through many field trials and laboratory-scale experiments over the past decades. However, the UCG is site specific and the commercialization of UCG is being hindered due to the lack of complete information for a specific site of operation.

Since conducting UCG trials and data extraction are Cited by:   A One-Dimensional Model for In Situ Coal Gasification, Thorsness et al., Aug. 25, (76 pages). Control Aspects of Underground Coal Gasification: LLL Investigation of Ground-Water and Subsidence Effects, Mead et al., Nov.

10, (21 pages).