Gas evolution during pyrolysis of various Colorado oil shales

Huss, E.B.; Burnham, Alan K.

doi:10.1016/0016-2361(82)90018-7

Cited by 80 publications

(59 citation statements)

References 9 publications

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“…Methane yields from a previous open pyrolysis experiment were reported to decline above a critical temperature (Huss and Burnham, 1982). However, the yield of methane in the present closed pyrolysis experiments increased continuously with pyrolysis temperatures.…”

Section: Yields Of Gasescontrasting

confidence: 51%

“…Methane yield increased more rapidly above 450°C. Previous closed system pyrolysis studies (Huss and Burnham, 1982;Behar et al, 1992) have similarly shown the main accumulation of methane occurs after 480°C. The increase in methane in the present experiments above 450°C was coincident with a sharp decline in the yields monitored for all PC 2 hydrocarbons.…”

Section: Yields Of Gasesmentioning

confidence: 87%

“…These studies have consistently identified a higher proportion of long aliphatic chains than side chains in the structure of Kukersite kerogen, which explain the very small ratios (< 0.4) of i-C 4 /n-C 4 and i-C 5 /n-C 5 in the present data. CO 2 is a common product of the thermal treatment of organic matter and large amounts of CO 2 typically accompany the generation of hydrocarbons on the cracking of kerogen, probably due to decarboxylation of organic acids and esters (Huss and Burnham, 1982). Carbonate minerals were removed from the Kukersite sample by HCl treatment, so the CO 2 measured can all be attributed to an organic origin.…”

Section: Yields Of Gasesmentioning

confidence: 99%

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Gas evolution during kerogen pyrolysis of Estonian Kukersite shale in confined gold tube system

Wang

Lü

Greenwood

et al. 2013

Organic Geochemistry

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Section: Yields Of Gasescontrasting

confidence: 51%

Section: Yields Of Gasesmentioning

confidence: 87%

Section: Yields Of Gasesmentioning

confidence: 99%

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Gas evolution during kerogen pyrolysis of Estonian Kukersite shale in confined gold tube system

Wang

Lü

Greenwood

et al. 2013

Organic Geochemistry

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“…(2001) b. Bar et al (1986) c. Campbell et al (1978) The temperature of maximum pyrolysis yield for kerogen falls within a narrow range of about 420 to 440 ºC (Huss and Burnham 1982;Clayton et al 1992), but only for high heating rates; on the order of 2880 ºK day -1 (2 ºC min -1…”

Section: Figure 18 Thermal Gravimetric and Differential Thermal Gravmentioning

confidence: 99%

“…Formation of oil occurs at temperatures between about 400 and 500 ºC. Kerogen, with an initial C/H mole ratio of about 0.67 undergoes three pyrolysis reactions (Campbell et al 1980;Huss and Burnham 1982): 1) Primary pyrolysis occurs between 350 and 500 ºC, oil is driven off generating a residual char with a C/H ratio in the range of 1 to 1.6; 2) Secondary char pyrolysis occurs between 500 and 650 ºC, hydrogen gas and methane gas are driven off, the residual char has a C/H ratio between 1.6 and 4.3.…”

Section: Kerogen / Oil Modelmentioning

confidence: 99%

Water Usage for In-Situ Oil Shale Retorting ? A Systems Dynamics Model

Mattson¹,

Hull²,

Cafferty³

2012

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A system dynamic model was construction to evaluate the water balance for in-situ oil shale conversion. The model is based on a systems dynamics approach and uses the Powersim Studio 9™ software package. Three phases of an insitu retort were consider; a construction phase primarily accounts for water needed for drilling and water produced during dewatering, an operation phase includes the production of water from the retorting process, and a remediation phase water to remove heat and solutes from the subsurface as well as return the ground surface to its natural state. Throughout these three phases, the water is consumed and produced. Consumption is account for through the drill process, dust control, returning the ground water to its initial level and make up water losses during the remedial flushing of the retort zone. Production of water is through the dewatering of the retort zone, and during chemical pyrolysis reaction of the kerogen conversion. The major water consumption was during the remediation of the insitu retorting zone. v vi CONTENTS

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Oil Shale Processing, Chemistry and Technology

Oja

Suuberg

2012

Encyclopedia of Sustainability Science and Technology

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Chevron Shale O i l Company P.O. Box 599 Denver, CO 80201 B. Project Scope This collaborative project with industrial participants studied oil shale retorting through an integrated program of fundamental research, mathematical model development and operation of a 4-tonne-per-day solid recirculation oil shale test unit. Quarterly, project personnel presented progress and findings to a Project Guidence Committee consisting of company representatives and DOE program management. We successfully operated the test unit, developed the oil shale process (OSP) mathematical model, evaluated technical plans for process scale up and determined economics for a successful small scale commercial deployment, producing premium motor fuel, specility chemicals along with electricity co-production. In budget negotiations, DOE funding for this three year CRADA was texminated, 17 months prematurely, as of October 1993. Funds to restore the project and continue the partnership have not been secured. C. Technical Our technical progress stopped as of October 1993, due to tennination of funding by DOE. No closeout funds were provided for project closeout or summary. Plans for process scale-up and field demonstration are currently on hold. D. Partner Contribution Our industrial partneers provided technical know-how &d guidence through quartely meetings of the Project Guidance Committee. Due to the premature shutdown of the project, no further plans are progressing by industry for deployment of the technology.

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Gas evolution during pyrolysis of various Colorado oil shales

Cited by 80 publications

References 9 publications

Gas evolution during kerogen pyrolysis of Estonian Kukersite shale in confined gold tube system

Gas evolution during kerogen pyrolysis of Estonian Kukersite shale in confined gold tube system

Water Usage for In-Situ Oil Shale Retorting ? A Systems Dynamics Model

Oil Shale Processing, Chemistry and Technology

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