Coal tar: a by-product in cokemaking and an essential raw material
In spite of this, due to its peculiar composition, coal tar is much more than a by-product of the coking process because it has a long demonstrated history as an Coal tar is a black or dark brown viscous liquid recovered in the coal coking process, and it is a major raw material in the coal chemical industry [19]. Coal tar, as a The manufacture of high-value carbon from coal-tar pitch
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(PDF) Methods for the preparation of coal-tar
sources of raw materials and alternative methods for the production of coaltar pitc h substitutes is substanti ated. The capabilities The carbonization of coal to produce metallurgical coke in slot-type recovery ovens is the main source of coal tar production. But tar is not a prime process target, and Coal tar: a by-product in cokemaking and an essential raw material
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Carbon precursors in coal tar: Extraction and ScienceDirect
Development of extraction technology for common raw materials in coal tar. Coal tar contains abundant polycyclic aromatic hydrocarbons, especially compounds The production of tar pitches and binding agents for the manufacture of high-quality carbon materials is considered. The progressive scarcity of coal-tar pitch is Methods for the preparation of coal-tar pitch SpringerLink
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Structural Analysis of Primary Coal Tar by FD-MS J-STAGE
Coal tar is a by-product of the coking process and has a wide variety of applications such as a raw material 1) for carbon electrodes and a binder 2) for improving the expansibility of Technical Guidelines for Material Selection—Part 2. Alireza Bahadori Ph.D., in Essentials of Coating, Painting, and Lining for the Oil, Gas and Petrochemical Industries, 2015. Coal Tar an overview ScienceDirect Topics
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Carbon Anode Raw Materials—Where Is the Cutting Edge?
The CTP (coal tar pitch) and CPC (calcined petroleum coke) raw materials used for anode production are both manufactured from byproducts of other industries making the aluminum industry dependent on others for two key raw materials. Despite this, the industry has made steady improvements in anode quality and performance over the Experiments were performed using a 9 mm diameter and 15–35 mm long cylindrical coal-based activated carbon raw material. An Elementer vario EL cube Elemental Analyzer was used to measure the C, H, N and S contents in the raw materials, while the O content was calculated by difference. Proximate analysis using standard determination An analysis of the carbonization process of coal-based
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from the Benzene Ring Structure in Coal Tar
2.1. Materials The coal tar used for our experiments was produced from Chinese Shanxi Gemeng coal through pyrolysis in a 1MW double circulating-fluidized-bed (CFB) experimental platform and detected by a laboratory gas chromatography–mass spectrometry system (GCMS, Agilent 7890-5977B) for coal tar components. The Coal tar, a black, sticky liquid thicker than water, is produced when coal is heated in the absence of air, a process called destructive distillation. From about 1860 until the 1940s, coal-tar products became the main raw materials of a large branch of the chemical industry. They were converted into dyes, drugs, explosives, plastics, fiberscoal-tar product Students Britannica Kids Homework Help
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(PDF) Preparation and Characterization of Coal-Pitch
High-temperature coal tar pitch is the common raw materials to produce high-quality coal-based needle coke. The basic properties (fa, β resin, quinoline insoluble) of coal tar pitch have greatlyMedium‐low‐temperature coal tar pitch (MLP) is a complex mixture of varied heavy organic hydrocarbons, which was generally used as the raw materials to produce artificial carbon materials.Recent advancement in coal tar pitch-based carbon fiber
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Coal Conversion Technologies ScienceDirect
The atomic compositions of several raw materials and finished products involved in coal conversion processes. The H-coal process, for the production of synthesis crude oil, recorded a 131-day test run with 70% of this time at the 220 ton day −1 Coal feed: 8,400,000 t yr −1: Tar products: 180,000 t yr −1: Hp steam: 1230 t h −1Recently, three major processing technologies of coal tar have been employed (Fig. 1).The first technique is separation (Song et al., 2019; Sun and Zhang, 2017), which is mostly adopted to process and produce light oil, phenol oil, naphthalene oil, and modified asphalt.This process route includes homogenization of coal tar; dehydration Carbon precursors in coal tar: Extraction and ScienceDirect
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Processes Free Full-Text Characteristics of Graphene
A large number of aromatic substances can be found in so-called coal tar (containing >10,000 individual compounds), which is a mixture of heavy liquid fractions (dense viscous black liquor, tended to solidification) obtained after the pyrolysis of coal (solid product—coke, gas products, and light liquid products are also produced during the Dedicated November 6, 1995, at Eastman Chemical Company in Kingsport, Tennessee. Commemorative Booklet (PDF) The Chemicals from Coal Facility of Eastman Chemical Company was the first in the United States Acetyl Chemicals from Coal Gasification National
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Plant sources, techniques of production and uses of tar: A
Tar production3.2.1. Material. In Turkey and Scandinavia, resinous type of trees is frequently used for tar production, especially from old stumps of dead trees (Burri et al., 2018; Julin, 2008; Koller et al., 2003; Steigenberger, 2013). On the other hand, the research shows that producers have used different parts of the tree.High temperature coal tar (HTCT) is a co-product of the coking process, whose objective is the production of metallurgical coke for use in the production of pig iron in blast furnaces. According to Fernández-García et al. (2017),HTCT is obtained with a yield of about 3–5 wt% in coking.Systematic mapping of studies on coal tar and pitch over the
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Carbon fibres from coal-tar pitch ScienceDirect
Coal-tar pitch as a feedstock for the production of carbon fibres provides a relatively cheap raw material, available in sufficient quantities, with the prospect of a high carbon yield. A description is given of the process developed to manufacture carbon fibres from coal-tar pitches.An Ecoinvent dataset on peat extraction in the Nordic countries was used to model the raw material extraction process. Truck transport of 35 km was assumed from the peat lands to the production facility. After peat extraction, the peat is dried and pelletized (Vapo Oy, 2019). As Ecoinvent lacked data on electricity consumption of peatComparative life cycle assessment of activated carbon production
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Pure & AppZ. Chem., PRODUCTS OF COAL (COKE, TAR,
used in steel production; thus, generally speaking, providing the basis of modern technology. Coal is utilized to a lesser extent as a raw material for the production of gases which, in turn, are used for heating purposes or for synthesis in ammonia, alcohol, and hydrocarbon manufacturing processes.The coal tar pitch material was produced by heat-treating coking coal to 400 °C, quenching the semi-coke and applying solvent extraction. These “low-temperature pitches” are expected to contain more reactive structures than those from a coke oven which are exposed to high temperatures in the coking process.Low-Cost Carbon Fibre Derived from Sustainable Coal Tar
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Energies Free Full-Text Comparison of Tar Samples from
Tar remaining in the gasification cavity during underground coal gasification (UCG) is an important pollution source, while the reported studies only focus on the tar behavior at the outlet. The present work aims to compare the tar properties from the reaction zone and the outlet, analyze the tar evolution during gasification, and discuss The most valuable product derived from coal tar is pitch. Pitch is used in a great diversity of applications, each of which imposes strict requirements on the pitch employed [].The characteristics of the final product depend on the quality of the initial material and the treatment method—in particular, parameters such as the process Valuable Products from Coal Tar SpringerLink
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Industrial uses of coal ScienceDirect
In the metallurgical area, steel plants incorporating the ironmaking blast furnace produce over 60% of world crude steel production. Figure 1.2 illustrates the basic components of a blast furnace, which probably reached a limiting size in the last decade of the twentieth century. Future improvements will probably come from innovations via raw
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