scholarly journals Effect of Recycle Solvent Hydrotreatment on Oil Yield of Direct Coal Liquefaction

Energies ◽  
2015 ◽  
Vol 8 (7) ◽  
pp. 6795-6805 ◽  
Author(s):  
Shansong Gao ◽  
Dexiang Zhang ◽  
Kejian Li
Keyword(s):  
Coal Liquefaction ◽  
Oil Yield ◽  
Direct Coal Liquefaction

scholarly journals Room-Temperature Solid-State Preparation of CoFe2O4@Coal Composites and Their Catalytic Performance in Direct Coal Liquefaction

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 503 ◽  
Author(s):  
Baolin Liu ◽  
Yizhao Li ◽  
Hao Wu ◽  
Fengyun Ma ◽  
Yali Cao
Keyword(s):  
Solid State ◽  
Catalytic Performance ◽  
Solid State Synthesis ◽  
Coal Liquefaction ◽  
Oil Yield ◽  
Cofe2o4 Nanoparticles ◽  
Synthesis Strategy ◽  
Iron Based ◽  
Direct Coal Liquefaction ◽  
Iron Based Catalysts

Iron-based catalysts are promising catalysts in the direct coal liquefaction (DCL) process as they are inexpensive and environmentally friendly. However, most such iron-based catalysts show relatively low activity in coal conversion and oil yield. Common techniques for the synthesis of these catalysts with excellent catalytic performance remain a substantial challenge. We present a simple solid-state synthesis strategy for preparing CoFe2O4 nanoparticles and CoFe2O4 nanoparticles supported on coal (CoFe2O4@coal) composites for DCL. The obtained bimetallic oxide CoFe2O4 nanoparticles show an enhanced catalytic performance in the DCL compared with monometallic components Fe2O3 and Co(OH)2 nanoparticles. The synergistic effect between Co and Fe of CoFe2O4 nanoparticles promotes the catalytic hydrogenation of coal during the DCL process. Moreover, the catalytic performance of CoFe2O4 nanoparticles is further improved when they are loaded on the coal. The conversion, oil yield, liquefaction degree, and gas yield of Dahuangshan lignite are 99.44, 56.01, 82.18 and 19.30 wt %, respectively, with the CoFe2O4@coal composites involved. The smaller particle size and high dispersion of CoFe2O4 supported on coal are of great benefit to full contact between coal and active components. The in-situ solid-state synthesis with coal as support shows great potential to prepare effective iron-based catalysts toward DCL in practice.

Hydrotreatment of Heavy Oil from Direct Coal Liquefaction on a Sulfided Ni-W/AC Catalyst

2012 ◽  
Vol 34 (24) ◽  
pp. 2287-2295 ◽  
Author(s):  
Z. P. Lei ◽  
L. J. Gao ◽  
H. F. Shui ◽  
Z. C. Wang ◽  
S. B. Ren
Keyword(s):  
Heavy Oil ◽  
Coal Liquefaction ◽  
Direct Coal Liquefaction

Compositions of distillate recycle solvents derived from direct coal liquefaction in the SRC-I process

Fuel ◽  
1985 ◽  
Vol 64 (2) ◽  
pp. 242-254 ◽  
Author(s):  
Mieczyslaw M. Boduszynski ◽  
Robert J. Hurtubise ◽  
Todd W. Allen ◽  
Howard F. Silver
Keyword(s):  
Coal Liquefaction ◽  
Direct Coal Liquefaction

Study on Properties of the Blends with Direct Coal Liquefaction Residue and Asphalt

2014 ◽  
Vol 488-489 ◽  
pp. 316-321 ◽  
Author(s):  
Jie Ji ◽  
Yong Shang Zhao ◽  
Shi Fa Xu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Processing Method ◽  
Coal Liquefaction ◽  
Direct Influence ◽  
Processing Methods ◽  
High Temperature Properties ◽  
Additive Content ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue

This paper studies the properties of the blends composed of DCLR (direct coal liquefaction residue) and asphalt using two different processing methods, compares the regulation that the DCLR additive content and processing method take influence on the high-temperature properties, low-temperature properties and durability of the blends. It is found that the DCLR can improve the high-temperature properties of asphalt but degrade its low-temperature properties. The properties of blends composed of DCLR, asphalt and furfural extract oil are tested and analyzed by adding a certain amount of furfural extract oil into it, which shows that adding DCLR can improve the high-temperature properties of asphalt and reduce its low-temperature properties but can hardly cause any impact on the properties of the blends. In addition, the processing method has a direct influence on the properties of blends.

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