coal liquefaction process

Capturing CO2: Gas Compression vs. Liquefaction POWER Magazine

Capturing CO2: Gas Compression vs. Liquefaction POWER Magazine

Coalfired plants have a far more difficult and expensive task ... Jun 1, 2009 by POWER. Also In This Issue. June 1, 2009. ... (A to B) and the typical liquefaction process (A to C) as design ...

Liquefaction Process an overview | ScienceDirect Topics

Liquefaction Process an overview | ScienceDirect Topics

The liquefaction process transforms natural gas into LNG by cooling it to approximately −161° C, after which it is stored until it can be shipped on board LNG tankers to its final destination where it is regasified at the import terminal.

Process study and CO2 emission reduction analysis of coal liquefaction ...

Process study and CO2 emission reduction analysis of coal liquefaction ...

The effective utilization of the coal liquefaction residue (CLR), which contains about 80% organic matter, is of great significancefor improving the oil yield of the direct liquefaction process ...

Direct Coal Liquefaction an overview | ScienceDirect Topics

Direct Coal Liquefaction an overview | ScienceDirect Topics

All direct coal liquefaction methods, such as HCoal, SolventRefined Coal, and Exxon Donor Solvent processes, are alike in one principal point: coal is thermally solubilized with certain solvents, usually coalderived, with or without catalysts. If heated in a proper liquid for a short time, most of the coal dissolves.

Catalyst withdrawal and addition in a coal liquefaction process

Catalyst withdrawal and addition in a coal liquefaction process

article{osti_, title = {Catalyst withdrawal and addition in a coal liquefaction process}, author = {Simone, A A and Ogren, D F}, abstractNote = {The catalyst is withdrawn from a coal hydroliquefaction reactor while it is maintained on stream by withdrawing a portion of the catalyst, in a separate stream, dispersed in product from the liquefaction zone, with such withdrawn stream being ...

Free FullText | Recent Advances in Direct Coal Liquefaction MDPI

Free FullText | Recent Advances in Direct Coal Liquefaction MDPI

The growing demand for petroleum, accompanied by the declining petroleum reserves and the concerns over energy security, has intensified the interest in direct coal liquefaction (DCL), particularly in countries such as China which is rich in coal resources, but short of petroleum. In addition to a general introduction on the mechanisms and processes of DCL, this paper overviews some recent ...

PDF Coal Conversion Pathway to Alternate Fuels

PDF Coal Conversion Pathway to Alternate Fuels

•Brown Coal Liquefaction (BCL) Process NEDO •Amoco CC TSL Process •Supercritical Gas Extraction (SGE) Process British Coal •MITI Mark I and Mark II CoProcessing •Cherry P Process Osaka Gas Co. •Solvolysis CoProcessing Mitsubishi •Mobil CoProcessing

A review on direct coal liquefaction residue applied in asphalt ...

A review on direct coal liquefaction residue applied in asphalt ...

Direct coal liquefaction residue (DCLR) is a byproduct of coaltoliquid technology when raw coal is converted into liquid fuel, which is harmful to the ecological environment and human can be developed into a road asphalt modifier via different techniques, that can improve and enhance asphalt performance. In this paper, the global research status of DCLR in asphalt pavement is ...

Coal to Liquids Technologies | SpringerLink

Coal to Liquids Technologies | SpringerLink

Coal resources have been used to produce liquid transportation fuels by several process routes collectively referred to as coal liquefaction or, more generally stated, as coal to liquids (CTL). Early records of coal conversion to liquid fuel date to 1913 and an extraction process developed by Friedrich Bergius in Germany [ 7 ].

Copyrolysis of lignite and Shendong coal direct liquefaction residue ...

Copyrolysis of lignite and Shendong coal direct liquefaction residue ...

Coal liquefaction residue (CLR) is usually categorized as hazardous waste, which is inevitably generated during the coalliquefaction process. Studies show that CLR has a high calorific value and can be used to decrease coal consumption during the cofiring process. In this regard, field tests were carried out to study the emission and ...

Oil processing Factorio Wiki

Oil processing Factorio Wiki

Petroleum gas production. For producing petroleum gas, the optimal advanced oil processing ratio is 20:5:17 (advanced oil processing : heavy oil cracking : light oil cracking), and 8:2:7 is close enough. Using coal liquefaction, the ratio is 60:39:55 (coal liquefaction : heavy oil cracking : light oil cracking), and 12:8:11 is close enough.

PDF Emission Factors 2/80 Us Epa

PDF Emission Factors 2/80 Us Epa

the process to dissolve the coal and to transfer externally produced hydrogen to the coal molecules. Catalytic liquefaction resembles solvent extraction, except that hydrogen is added to the coal with the aid of a catalyst. Figure presents the flow diagram of a typical solvent extraction or catalytic liquefaction plant. These coal ...

Exxon donor solvent process Wikipedia

Exxon donor solvent process Wikipedia

Process. The Exxon donor solvent process is a noncatalytic processing of solventslurried coal in a highpressure liquefaction reactor. Coal is cleaned, crushed and fed to the slurry dryer, where water is removed. The dry crushed coal is slurried with the hydrogen donor recycle solvent. The coal slurry is treated with hydrogen and heated in a ...

Coal liquefaction process (Patent) |

Coal liquefaction process (Patent) |

A process for liquefying a particulate coal feed to produce useful petroleumlike liquid products by steps which include: (a) contacting, in a liquefaction zone, said coal feed with a hydrogen donor solvent at temperature and pressure sufficient to hydroconvert and liquefy the coal, (b) separating the product from the liquefaction zone by distillation into fractions inclusive of a liquid ...

CoaltoLiquids an overview | ScienceDirect Topics

CoaltoLiquids an overview | ScienceDirect Topics

Since the late 1970s, coal liquefaction processes have been developed into integrated twostage processes, in which coal is liquefied in the presence of hydrogen in the first stage and the products are upgraded in the second stage.

Coal Liquefaction an overview | ScienceDirect Topics

Coal Liquefaction an overview | ScienceDirect Topics

Figure (A) Schematic representation of elution zones of different chemical families representative of a coalderived middle distillate; (B) SFCFID chromatogram of a coalderived middle distillate using the pyridine bonded phase showing the huge resolution of phenols from hydrocarbons.

Novel use of residue from direct coal liquefaction process

Novel use of residue from direct coal liquefaction process

article{osti_, title = {Novel use of residue from direct coal liquefaction process}, author = {Yang, Jianli and Wang, Zhaixia and Liu, Zhenyu and Zhang, Yuzhen}, abstractNote = {Direct coal liquefaction residue (DCLR) is, commonly, designed to be used as a feed stock for gasification or combustion. Use of DCLR as a value added product is very important for improving overall economy of ...

Liquefaction Wikipedia

Liquefaction Wikipedia

Liquefaction. In materials science, liquefaction [1] is a process that generates a liquid from a solid or a gas [2] or that generates a nonliquid phase which behaves in accordance with fluid dynamics. [3] It occurs both naturally and artificially. As an example of the latter, a "major commercial application of liquefaction is the liquefaction ...

Further discussion on the mechanism of hydrogen transfer in direct coal ...

Further discussion on the mechanism of hydrogen transfer in direct coal ...

Introduction. Direct coal liquefaction (DCL) is known as a clean and efficient coal utilization technology, in which solid coal could be converted into liquid fuels and high valueadded chemicals by hydrogenation. [ [1], [2], [3]] The Hdonor is an important index in DCL technology [ [4], [5], [6]]: It is considered as a medium for mass ...

 Coal to Liquids and Water Use |

Coal to Liquids and Water Use |

In the discussion above the fuels synthesis is indirect, based on coal gasification followed by FischerTropsch synthesis. Direct CTL is a significantly different process approach, but both indirect and direct coal liquefaction require water for the same reasons, from demands for process cooling, hydrogen demand, etc.

Coal liquefaction Wikipedia

Coal liquefaction Wikipedia

1Historical background 2Methods Toggle Methods subsection and carbonization processes

Liquefied natural gas may be more damaging to the climate than coal ...

Liquefied natural gas may be more damaging to the climate than coal ...

New study shows liquefied natural gas might be worse for climate change than coal The findings have major implications for global climate goals and for the United States, which became the world ...

PDF Overview of Coaltoliquids: a Historical Perspective

PDF Overview of Coaltoliquids: a Historical Perspective

CCLP Chevron Coal Liquefaction Process CCS Carbon capture and storage CO Carbon monoxide CO 2 Carbon dioxide CPI OPECConsumer Price Index CTL Coaltoliquids DCL Direct coal liquefaction DME Dimethyl ether DOD Department of Defense DOE Department of Energy EDS Exxon Donor Solvent ...

Influence of coal properties on coal conversion processescoal ...

Influence of coal properties on coal conversion processescoal ...

Indirect liquefaction process coal is liquefied through the FischerTropsch (FTS) process. The FTS process uses synthesis gas from the gasification process and converts it into liquidous hydrocarbons and associating oxygenated compounds using different catalysts from Group VIII.

Free FullText | Recent Advances in Direct Coal Liquefaction MDPI

Free FullText | Recent Advances in Direct Coal Liquefaction MDPI

reported a twostage liquefaction process with Tanito Harum coal (Indonesian subbituminous coal) under the hydrogen pressure of 15 MPa using 10 wt% Fe10 wt% Ni catalyst supported on carbon nanoparticles. Under the optimal conditions of the two stage liquefaction: 380 °C for 15 min in the first stage and 450 °C for 105 min in the second ...

PDF Liquefaction of Coal EOLSS

PDF Liquefaction of Coal EOLSS

Coal liquefaction is an industrial process in which coal as raw material, through chemical reactions, is converted into liquid hydrocarbon mixture, which, under further processing, becomes desired liquid fuels or chemical feedstock. Therefore, the main purpose of coal liquefaction lies in production of either synthetic oil as a partial

Coal liquefaction process (Patent) |

Coal liquefaction process (Patent) |

Pyrite addition to a coal liquefaction process (22, 26) is controlled (118) in inverse proportion to the calcium content of the feed coal to maximize the F. ( C.) liquid yield per unit weight of pyrite added (110). The pyrite addition is controlled in this manner so as to minimize the amount of pyrite used and ...

Coal Liquefaction | GAO

Coal Liquefaction | GAO

Coal liquefaction is the conversion of coal to a cleanburning, lowsulfercontent fuel which can augment gasoline and boiler fuels. Direct liquefaction processes are currently in the research and development stage and are expected to yield a high percentage of boiler fuels for industry and utilities. Indirect liquefaction processes are ...