New Materials For Coal Liquefaction

New materials for coal liquefaction - NASA/ADS

A description is presented of the general criteria for the selection of materials for coal liquefaction catalysis. In addition to their catalytical effectiveness prospective catalysts must be able to meet certain criteria regarding their thermal and chemical stability. By comparing free energies of formation, it is possible to make a qualitative evaluation of the relative stability of …

New materials for coal liquefaction. [12 refs] (Conference ...

OSTI.GOV Conference: New materials for coal liquefaction. [12 refs] New materials for coal liquefaction. [12 refs] Full Record; Other Related Research

New catalytic materials for the liquefaction of coal ...

Potential second-generation catalytic materials for the direct liquefaction of coal to boiler fuel are studied. Both fundamental aspects and engineering constraints were considered in evaluating materials and assigning a priority for further study. A synopsis of relevant background information, the nature of the study, and the evaluation of materials is presented along with a …

Coal Liquefaction - an overview | ScienceDirect Topics

Coal liquefaction products belong to the new generation of fuel substitutes. However, their composition is different to petroleum fuel specifications: they are mainly composed of naphthenes, aromatics, polycondensed naphthenic and aromatic structures, and heteroatomic compounds (bearing nitrogen or oxygen atoms). Their paraffin content is very low. Oxygen is found in alkylated phenolic and furanic structures. Owing to the properties of this kind of fuel, …

Materials for coal liquefaction. [63 references ...

OSTI.GOV Conference: Materials for coal liquefaction. [63 references] Materials for coal liquefaction. [63 references] Full Record; Other Related Research

Corrosion-Resistant materials for coal liquefaction ...

01/09/1985· The corrosion response of alloys in various process environments in coal liquefaction pilot plants is discussed. Causes of corrosion and limiting conditions (such as temperature, pressure, and fluid velocity) are addressed. Solutions …

Coal Liquefaction - an overview | ScienceDirect Topics

Coal is being tested to produce carbon products, using both coal and the liquid products derived from coal liquefaction. Carbon products are becoming increasingly common over a wide spectrum of applications, ranging from sports equipment to engineered materials for fighter aircraft and space shuttles. In addition, carbon materials such as carbon fibers and carbon foams are finding new …

Materials problems in coal gasification and liquefaction ...

01/02/1978· The conversion of coal to “clean” fuels imposes severe demands on materials of construc-tion. The operational environments experienced by these materials may be high tempera-tures and high pressures and contain substantial quantities of H2S, H2, organic acids, chlorides and particulate matter. Experiences to date indicate that corrosion and erosion problems will tax materials …

Coal Liquefaction

“Methods of coal liquefaction have been available since the beginning of the last century, but the cost has caused us to search for more effective new processes,” explains Matthias W. Haenel. Coal is a complicated, difficult to analyze mixture of organic components. In what is called the Bergius process for direct coal liquefaction, the coal is treated with hydrogen under pressure …

Revised IMSBC Code requirements for liquefaction of coal ...

Furthermore, certain coals cargoes may also be subject to liquefaction. As such, the amended IMSBC Code classifies coal as Group A (i.e. cargoes which may liquefy if shipped at a moisture content in excess of their transportable moisture limit) if 75% or more of the material consists of fine particles under 5mm in size.

Corrosion-Resistant materials for coal liquefaction ...

The corrosion response of alloys in various process environments in coal liquefaction pilot plants is discussed. Causes of corrosion and limiting conditions (such as temperature, pressure, and fluid velocity) are addressed. Solutions and needed development are emphasized.

New catalysts for coal liquefaction and new ...

The use of coal as a source of transportation fuel is currently economically unfavorable due to an abundant world petroleum supply and the relatively high cost of coal liquefaction. Consequently, a reduction in the cost of coal liquefaction, for example by using less and/or less costly catalysts or lower liquefaction temperatures, must be accomplished if coal is to play an significant role …

Materials problems in coal gasification and liquefaction ...

The conversion of coal to “clean” fuels imposes severe demands on materials of construc-tion. The operational environments experienced by these materials may be high tempera-tures and high pressures and contain substantial quantities of H2S, H2, organic acids, chlorides and particulate matter. Experiences to date indicate that corrosion and erosion problems will tax materials …

Coal Liquefaction - Phys.org

The new process is the first “true” coal hydration in the sense of hydrogen being added to unsaturated structures. Once prepared in this way, high-rank coals could now be liquefied in a ...

Carbon catalysts for reactions relevant to coal …

01/01/1995· The activation of coal or other materials with potassium hydroxide (KOH) give high surface area active carbons developed on a limited industrial basis, but the materials usually exhibit very low activity as catalysts in the reactions of interest for coal liquefaction. A procedure for coal activation with KOH, which increases the catalytic activity and gives materials with …

Development of Industrial Catalyst for Coal Liquefaction

The NEDOL process, a bituminous coal liquefaction method developed by the New Energy Development Organization (NEDO), is characterized by its high oil yield from wide ranging coal under the mild reaction conditions. Pyrite pulverized into a sub-micron size with coal derived solvent performed high catalytic activity through the operation of the NEDOL 150t/d pilot plant. …

Revised IMSBC Code requirements for liquefaction of coal ...

On the 1st of January 2019 the International Maritime Solid Bulk Cargoes (IMSBC) Code will set new requirements to manage the risk of liquefaction during the transport of coal cargoes. The IMSBC Code describes coal as a natural, solid, combustible material consisting of amorphous carbon and hydrocarbons.

The acute toxicity of coal liquefaction-derived materials.

The acute toxicity of coal liquefaction-derived materials. McKee RH, Biles RW, Kapp RW, Hinz JP. The acute toxicity of a series of potential streams from the EDS coal liquefaction process have been assessed in animal bioassays. In general, the materials present minimal acute toxic hazards. However, there was some evidence of ocular and dermal irritation. These results …

Coal Liquefaction | Request PDF

A coal liquefaction pilot plant of the NEDOL process, supported by the New Energy and Industrial Technology Development Organization (NEDO), was in successful operation for a total of 269 days at ...

Catalysis in coal liquefaction:new directions for research ...

Coal liquefaction catalysis has been reviewed with the aims of assessing the present state of knowledge and identifying new directions and strategies for research. Recommendations are made which are intended to provide a basis for the formulation of future R&D programmes. The processes of primary coal dissolution and coal liquids upgrading are distinguished. …

Coal Liquefaction - Phys.org

starting material for liquid fuels and chemical raw materials. Researchers at the Max Planck Institute for Coal Research in Mülheim on the Ruhr have developed a new process that makes it …

CiteSeerX — tal:M MATERIALS FOR COAL LIQUEFACTION

@MISC{Levy_tal:mmaterials, author = {Ricardo B. Levy and James A. Cusumano}, title = {tal:M MATERIALS FOR COAL LIQUEFACTION}, year = {}} Share. OpenURL . Abstract. l iquefac t ion i s one of the a1 te rna t ives cur ren t ly under developiment f o r I n the more advanced l iquefac t ion the production of clean burning f u e l s from coal. Processes, such as those of …

Development of Industrial Catalyst for Coal Liquefaction

The NEDOL process, a bituminous coal liquefaction method developed by the New Energy Development Organization (NEDO), is characterized by its high oil yield from wide ranging coal under the mild reaction conditions.

Erosion-resistant materials for critical areas of coal ...

Erosion-resistant materials for critical areas of coal liquefaction and coal gasification systems. Journal of Materials for Energy Systems. Dinesh Shetty. PDF. Download Free PDF. Free PDF. Download with Google Download with Facebook. or. Create a free account to download. PDF. PDF. Download PDF Package ...

The acute toxicity of coal liquefaction-derived materials.

The acute toxicity of coal liquefaction-derived materials. McKee RH, Biles RW, Kapp RW, Hinz JP. The acute toxicity of a series of potential streams from the EDS coal liquefaction process have been assessed in animal bioassays. In general, the materials present minimal acute toxic hazards. However, there was some evidence of ocular and dermal irritation. These results …

Coal Liquefaction | Request PDF

We report evidence to support a new mechanism for coal liquefaction in which strong linkages (i.e., nonthermolyzable linkages such as diarylmethanes, other …

Catalysis in coal liquefaction:new directions for research ...

Coal liquefaction catalysis has been reviewed with the aims of assessing the present state of knowledge and identifying new directions and strategies for research. Recommendations are made which are intended to provide a basis for the formulation of future R&D programmes. The processes of primary coal dissolution and coal liquids upgrading are distinguished. …

New IMSBC Code requirements aim to control …

The International Maritime Solid Bulk Cargoes (IMSBC) Code describes coal as a natural, solid, combustible material consisting of amorphous carbon and hydrocarbons. Although coal is …

New IMSBC Code requirements aim to control …

New IMSBC Code requirements aim to control liquefaction of coal cargoes Amendments to the IMSBC Code will enter into force on 1 January 2019. In this article, Penelope Cooke of Brookes Bell LLP explains how the upcoming amendments will affect vessels carrying coal cargoes. For all details of the IMSBC Code amendments, please see IMO Resolution …

Liquefaction of coal - Mobil Oil Corporation

In a process for the liquefaction of coal, the improvement which comprises admixing comminuted coal with a thermally stable organic solvent having a boiling point in the range between about 450° and 950° F.; heating the admixture at a temperature between about 500° and 900° F. for a period of time sufficient to solubilize substantially the coal and form a slurry of a homogeneous …

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