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new materials for coal liquefaction

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 detailed analysis

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New catalysts for coal liquefaction and new

@article{osti_10103060, title = {New catalysts for coal liquefaction and new nanocrystalline catalysts synthesis methods}, author = {Linehan, J C and Matson, D W and Darab, J G}, abstractNote = {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.

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Coal Liquefaction an overview ScienceDirect Topics

Gareth D. Mitchell, in Applied Coal Petrology, 2008. 6.2 Process and Methods for Coal Liquefaction. Coal liquefaction technology began in Germany when Frederick Bergius showed that it was possible to add hydrogen to coal at 300–500°C and 1.0 MPa to produce distillate products (Bergius, 1914). During the period of 1914–1925, the process was refined and I. G. Farbenindustrie began

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Coal liquefaction Wikipedia

Historical background. Coal liquefaction originally was developed at the beginning of the 20th century. The best-known CTL process is Fischer–Tropsch synthesis (FT), named after the inventors Franz Fischer and Hans Tropsch from the Kaiser Wilhelm Institute in the 1920s. The FT synthesis is the basis for indirect coal liquefaction (ICL) technology.

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US20120080358A1 Pipeline Crude Oil in Coal Liquefaction

The present disclosure provides methods and systems for coal liquefaction using a pipeline crude oil. A method of obtaining a de-ashed coal extract includes exposing a coal to a pipeline crude oil to form a slurry, elevating the temperature of the slurry to facilitate liquefying the coal and liberating a volatile matter, and separating the insoluble components from the slurry to obtain a de

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New IMSBC Code requirements aim to control liquefaction o

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 best known for its flammable and self-heating properties, certain coal cargoes may also be liable to liquefaction.

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Liquid fuels from coal; Proceedings of the Symposium, San

The role of the solvent in the solvent refined coal process is considered along with the products from two-step coal liquefaction using three different first-step reactor packings, the effect of coal minerals on reaction rates during coal liquefaction, the hydrogenation of phenanthrene over a commercial cobalt molybdenum sulfide catalyst under severe reaction conditions, new materials for coal

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US20120080358A1 Pipeline Crude Oil in Coal Liquefaction

The present disclosure provides methods and systems for coal liquefaction using a pipeline crude oil. A method of obtaining a de-ashed coal extract includes exposing a coal to a pipeline crude oil to form a slurry, elevating the temperature of the slurry to facilitate liquefying the coal and liberating a volatile matter, and separating the insoluble components from the slurry to obtain a de

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Electrospun Coal Liquefaction Residues/Polyacrylonitrile

Coal liquefaction residues (CLRs)-based nanofiber nonwoven fabrics are fabricated by electrospinning using the mixture of polyacrylonitrile and preasphaltene (toluene insoluble-tetrahydrofuran soluble) as the precursor. CLR-based carbon nanofiber (CF) nonwoven fabrics are further obtained by nitric acid pre-oxidization and step-mattered heat treatment. The electrochemical performances of the

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Self‐template porous carbon by direct activation of high

Summary Effective utilization of the wasted high‐ash coal liquefaction residue (CLR) becomes increasingly important with the fast development of the coal chemical industry. Herein, a self‐template

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New liquefaction technique could 'unlock the true value of

The new reactors the company has developed use a technology called Wave Liquefaction that take up a lot less space than traditional coal-to-liquid plants and can draw three barrels of oil from a ton of coal — a liquid yield of roughly 50%. It also converts coal powder in a fraction of a second under more mild conditions than usual coal

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New IMSBC Code requirements aim to control liquefaction o

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 best known for its flammable and self-heating properties, certain coal cargoes may also be liable to liquefaction.

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Coal Conversion Processes: Gasification and Liquefaction

Jan 01, 1982· In principle, the process of coal liquefaction involves chemical compounds which also occur in other carbochemical or petrochemical processes. It is well known that a number of these substances may be carcinogenic, teratogenic or mutagenic. The concentration of benzo(a)pyrene in coal liquefaction products can be between 50 and 60 μg g −1.

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Coal Liquefaction Phys.org

Coal Liquefaction 9 January 2006 starting material for liquid fuels and chemical raw materials. Researchers at the Max Planck Institute The new process is the first “true” coal

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US Patent for Coal liquefaction Patent (Patent # 4,522,700

In a two-stage liquefaction wherein coal, hydrogen and liquefaction solvent are contacted in a first thermal liquefaction zone, followed by recovery of an essentially ash free liquid and a pumpable stream of insoluble material, which includes 850.degree. F.+ liquid, with the essentially ash free liquid then being further upgraded in a second liquefaction zone, the liquefaction solvent for the

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Clean liquid fuels from direct coal liquefaction

Direct coal liquefaction (DCL) converts solid coal (H/C ratio ≈ 0.8) to liquid fuels (H/C ratio ≈ 2) by adding hydrogen at high temperature and pressures in the presence or absence of catalyst. This review provides a comprehensive literature survey of the coal structure, chemistry and catalysis involved in direct liquefaction of coal.

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Coal as an avenue to low-cost carbon fibers CompositesWorld

Oct 18, 2017· Making carbon fibers from coal is not new. Since the 1960s, He explains that precursor (liquid) material from coal can be produced by standard pyrolysis, coal gasification (with the gas converted back into liquid), or direct liquefaction using heat, pressure and solvent extraction. Pitch material is initially isotropic, but can be converted

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Liquid fuels from coal; Proceedings of the Symposium, San

The role of the solvent in the solvent refined coal process is considered along with the products from two-step coal liquefaction using three different first-step reactor packings, the effect of coal minerals on reaction rates during coal liquefaction, the hydrogenation of phenanthrene over a commercial cobalt molybdenum sulfide catalyst under severe reaction conditions, new materials for coal

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10.6. Direct Liquefaction Processes netl.doe.gov

The U.S. Department of Energy (DOE) had a very active coal liquefaction research program in 1970 into the 1980s in response to the Organization of the Petroleum Exporting Countries (OPEC) oil embargo of 1973, but the funding has been greatly reduced since the 1990s when the DOE development for direct coal liquefaction ended.

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Coal Zoom NewERA Carbon Announces Wave Liquefaction

The 2019 National Coal Council Study, Coal in a New Carbon Age, and DOE itself have both described this technology as “very promising”. The technology is now ready for development to scale. Over the past decade, coal use for electricity generation has halved and many thousands of coal miners and thousands more in the coal supply chain have

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Coal liquefaction process Exxon Research and Engineering Co.

Preferably, the balance of the liquid medium is a hydrocarbonaceous oil derived from coal liquefaction processes (i.e. coal liquids), more preferably hydrocarbonaceous coal liquids having an atmospheric boiling point ranging from about 100° F. to about 600° F. The phenol-soluble metal compound may be a single compound or a mixture of compounds.

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