scholarly journals Fluidized-bed pyrolysis of oil shale: oil yield, composition, and kinetics

1982 ◽  
Author(s):  
J H Richardson ◽  
E B Huss ◽  
L L Ott ◽  
J E Clarkson ◽  
M O Bishop ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Oil Shale ◽  
Oil Yield ◽  
Shale Oil

Some Effects of Pressure on Oil-Shale Retorting

1969 ◽  
Vol 9 (03) ◽  
pp. 287-292 ◽  
Author(s):  
J.H. Bae
Keyword(s):  
High Pressure ◽  
Oil Shale ◽  
Oil Yield ◽  
Shale Oil ◽  
Effect Of Pressure ◽  
Batch Type ◽  
Sweeping Gas ◽  
Experimental Pressure

Abstract A series of batch-type retorting experiments 930 degrees F were performed to investigate the effect of pressure and surrounding atmosphere on the retorting of oil shale. The experimental pressure ranged from atmospheric to 2,500 psig. pressure ranged from atmospheric to 2,500 psig. The sweeping gases used were N2, COe, H2O, NH3 and H2. We found that high pressure reduces the oil yield significantly and produces a larger volume of light hydrocarbon gases. The crude shale oil obtained at high pressure has higher aromaticity and a lower pour point than the low pressure material. The sulfur pour point than the low pressure material. The sulfur and nitrogen content in shale oil does not change significantly with increasing pressure. The effect of sweeping gas is usually small. In general, gases which decompose to yield H2 increase the oil yield at high pressure. At atmospheric pressure there is no effect. The high oil yield with H2, pressure there is no effect. The high oil yield with H2, more than 100 percent of the Fischer Assay, reported on "hydrotorting" experiments was not observed in this work. Introduction The in-situ retorting of oil shale has attracted much interest because it obviates the troublesome problem in surface retorting of mining, crushing and problem in surface retorting of mining, crushing and handling a large quantity of oil shale. The cost of these operations in the surface retorting process amounts to more than half the total production cost of shale oil. From an economic point of view, the recovery of shale oil by in-situ methods is highly desirable At present in--situ retorting is accomplished by combustion or hot gas injection, following conventional hydraulic fracturing. Explosive fracturing also has been studied. While these methods of fracturing are promising, there is still much uncertainty associated with them. On the other hand, even if an adequate mass permeability could be created, the high pressures encountered at depths of several thousand feet where oil shale commonly existwould certainly affect the thermal decomposition of oil shale. Thomas has experimentally simulated the effects of overburden pressure on the physical and mechanical properties of oil shale during underground retorting. Allred and Nielson studied the effect of pressure in reverse combustion on the yield and pressure in reverse combustion on the yield and quality of oil produced. These results are fragmentary and are applicable only to reverse combustion. Grant reported an oil yield of 35 to 40 percent of the Fischer Assay was obtained in a laboratory forward combustion experiment at 500 psig. We decided to investigate the effect of pressure on oil shale retorting because so little information was available on subjects. We sought to determine me effects of fluid pressure and surrounding atmosphere on the quantity and quality of products obtained from retorting oil slide. Results of a series of batch-type retorting experiments are reported. EXPERIMENTAL EQUIPMENT A schematic drawing of the retorting and product-collecting system is shown in Fig. 1. The pump product-collecting system is shown in Fig. 1. The pump delivers the sweeping gas at a constant rate to the retorting unit, which is maintained at the experimental pressure. The gas purged from the unit passes through pressure. The gas purged from the unit passes through a glass adapter to a centrifuge tube that is cooled by an ice-salt mixture. The gases are cooled further in the condenser that is kept at 32 degrees F and then sampled, measured through a wet-test meter, and vented. The retorting unit is an Autoclave single-ended reactor of 2–3/16-in. ID and 8–1/4-in. inside depth, rated 3,000 psi at 1000 degree F. SPEJ P. 287

Effect of oil shale retorting temperature on shale oil yield and properties

Fuel ◽  
2012 ◽  
Vol 95 ◽  
pp. 131-135 ◽  
Author(s):  
Jeong Geol Na ◽  
Cheol Hyun Im ◽  
Soo Hyun Chung ◽  
Ki Bong Lee
Keyword(s):  
Oil Shale ◽  
Oil Yield ◽  
Shale Oil

Effect of Demineralization on Shale Oil Yield by Bioleaching Process of Huadian (China) Oil Shale

2013 ◽  
Vol 295-298 ◽  
pp. 146-149
Author(s):  
Xue Qing Zhang ◽  
Lan Ying Zhang ◽  
He Jun Ren
Keyword(s):  
Organic Carbon ◽  
Surface Structure ◽  
Mixed Culture ◽  
Oil Shale ◽  
Thiobacillus Ferrooxidans ◽  
Oil Yield ◽  
Mineral Matter ◽  
Shale Oil ◽  
Temperature Programmed

In this study, the effect of the mineral matter of Huadian (China) Oil Shale on the conversion of organic carbon of oil shale to shale oil. The bioleaching process is taken in a mixed culture of the lithotrophic bacteria Thiobacillus ferrooxidans(Tf). The aim of bioleaching process was to dissolve the inorganic matters and improve the shale oil yield. A series of temperature-programmed pyrolysis operation was performed with raw and bioleached oil shale to find the best retorting temperature, 500oC is the best temperature to retort the oil shale. The oil shale samples were detected by SEM, DG, Fischer assay test, the results show that the surface structure was significantly different from the raw sample, and the shale oil yield improved from 8.9% to 11.7%.

Experimental Research on Producing Shale Oil through Thermal Cracking of Small-Particle Oil Shale

2013 ◽  
Vol 652-654 ◽  
pp. 839-843
Author(s):  
Zhi Yang Yuan
Keyword(s):  
Fluidized Bed ◽  
Experimental Research ◽  
Small Particle ◽  
Oil Shale ◽  
Orthogonal Experiment ◽  
Thermal Cracking ◽  
Shale Oil ◽  
Technological Parameters ◽  
Oil Productivity ◽  
Experimental Researches

Aiming at utilization status of China’s small particle oil shale, in the condition of laboratory, self-developed instrument of fluidized bed thermal cracking is used to conduct experimental researches on producing shale oil through thermal cracking of small-particle oil Shale. Through the orthogonal experiment, the optimal technological parameters on producing shale oil through thermal cracking are optimized. The experimental results have shown us that under the optimal technological conditions, oil productivity is at about 5%. Therefore, the technology of fluidized bed thermal cracking is an effective new method for producing oil through small-particle oil shale.

Contrastive Analysis on Low Temperature Carbonization of Longkou and Yaojie Oil Shale in Aluminum Retort

2013 ◽  
Vol 860-863 ◽  
pp. 960-966
Author(s):  
Yao Xiong ◽  
Ming Jie Ma ◽  
Guan Yu Wang ◽  
Shan Xiu Huang ◽  
Guang Yi Cai ◽  
...  
Keyword(s):  
Particle Size ◽  
Heating Rate ◽  
Residence Time ◽  
Oil Shale ◽  
Influence Factor ◽  
Volatile Component ◽  
Proximate Analysis ◽  
Oil Yield ◽  
Shale Oil ◽  
Experimental Findings

Lots of basic analyses carried on YJOS (Yaojie oil shale) and LKOS (Longkou oil shale) consist of proximate analysis, ultimate analysis, XRF analysis and shale oil yield in aluminum retort. Besides, TGA are used on YJOS, LKOS and shale oil, gas chromatographic analysis is used on retorting gas. The results show that LKOS and YJOS have the same hydrogen-to-carbon ratio, but LKOS has higher volatile component and its oil yield in aluminum retort is much higher than YJOS. Ca content in LKOS is much higher than YJOS, however, Al and Fe content in LKOS are lower than YJOS. Two kinds of shale oil after destructive distillation have similar composition and relative content, in addition, they all produce more low boiling point distillates, combustible component of their destructive distillation gas are H2 and CH4, the second are CO and C2H6. Aluminium retort experimental findings, The carbonization temperature is the main influence factor on oil shale destructive distillation process in aluminum retort. Residence time has small influence on shale oil yield but need to choose appropriate heating rate and particle size. Best carbonization parameters of LKOS in aluminum retort: Temperature 500~550°C, heating rate 5°C/min, particle size 2~4mm, Residence time 10~20min;the best parameters of YJOS: Temperature 500~550°C, heating rate 5°C/min, particle size0.2~0.9mm, residence time 10~20min.

Analysis of the pore structure of Longkou oil shale semicoke during fluidized bed combustion

Oil Shale ◽  
2020 ◽  
Vol 37 (2) ◽  
pp. 89 ◽  
Author(s):  
H Liu ◽  
S Feng ◽  
S Zhang ◽  
C Jia ◽  
H Xuan ◽  
...  
Keyword(s):  
Pore Structure ◽  
Fluidized Bed ◽  
Oil Shale ◽  
Fluidized Bed Combustion

Processing of eastern US oil shale in a multistaged fluidized bed system

Fuel ◽  
1990 ◽  
Vol 69 (9) ◽  
pp. 1124-1128 ◽  
Author(s):  
Scott D. Carter ◽  
Thomas L. Robl ◽  
Aurora M. Rubel ◽  
Darrell N. Taulbee
Keyword(s):  
Fluidized Bed ◽  
Oil Shale
Sign in / Sign up

Export Citation Format

Share Document