Coking Coal – IspatGuru
Coking coal is a naturally occurring sedimentary rock found within the Earth's crust. Categories of coking coal include hard coking coal, semi-hard coking-coal or semi-soft coking coal, and coal for pulverized coal for injection (PCI). These apply to the different quality grades of the coking coal, all of which are used in ironmaking.
Mineral Beneficiation and Processing of Coal | SpringerLink
Based on utility, coals are classified into coking type and non-coking type. Further, coking coals are subdivided into four groups: prime coking coal, medium coking coal, semi-coking coal, and weakly coking coal. Prime coking coals when subjected to the carbonization process at high temperature produce coke of metallurgical standards.
Study on Combustion Kinetic Characteristics of …
In order to master the combustion kinetic characteristics of semi-coking dust in the early pyrolysis stage of lignite combustion explosion, a vacuum tube furnace was used to prepare semi-coking dust with different …
Intensified phenols extraction and oil removal for industrial semi …
@article{Bokun2020IntensifiedPE, title={Intensified phenols extraction and oil removal for industrial semi-coking wastewater: A novel economic pretreatment process design}, author={C. Bokun and Yang Siyu and Wu Yangyang and Suo Miyangzi and Qian Yu}, journal={Journal of Cleaner Production}, year={2020}, volume={242}, pages={118453}, …
Intensified phenols extraction and oil removal for …
Intensified phenols extraction and oil removal for industrial semi-coking wastewater: A novel economic pretreatment process design. The bottleneck of current …
Treatment effects and genotoxicity relevance of the
Current semi-coking wastewater treatment process has low performance of pollutants removal and consumes a large amount of high-grade steams. It far exceeds the semi-coke plants' utilities supply ...
Variations in toxicity of semi-coking wastewater
Current semi-coking wastewater treatment process has low performance of pollutants removal and consumes a large amount of high-grade steams. It far exceeds the semi-coke plants' utilities supply ...
Semi Coke | SpringerLink
Semi coke is the solid products, obtained from low-rank bituminous coal, lignite, or peat by carbonization at low temperature (500–750 °C) in a retort furnace. In general, semi coke is also a by-product or intermediate product of the conversion of coal into liquid and gaseous fuels (Fig. 1 ). Fig. 1.
Mechanism of carbon structure transformation in plastic layer and semi
The transformation of the carbon structure of coal during the coking process influences the coke microstructure and microtexture, and ultimately, the coke quality. ... Mechanism of carbon structure transformation in plastic layer and semi-coke during coking of Australian metallurgical coals. / Chen, Yixin; Lee, Soonho; Tahmasebi, Arash et al.
Cumulative effects and metabolic characteristics of
Problems such as low concentration of organic pollutants in the biochemical effluent of coking wastewater and poor mass transfer efficiency have seriously affected the effectiveness of coking wastewater depth. Three-dimensional electrode oxidation processes (3DEOPs) are a very promising advanced oxidation process for wastewater …
Molecular representation and atomic-level coking evolution
The semi-coke was further condensed to form large aromatic carbon lamellae above 823 K, and eventually converted to pitch coke. However, the understanding of the MCTP coking process merely from a conventional laboratory perspective is inadequate, and the underlying evolution mechanism of the MCTP coking process is …
From pollutant to valuable phenolic resin: a novel …
Semi-coking is a typical coal chemical process broadly applied in Yulin region of Shaanxi Province, China. Utilizing the locally mined high quality, low metamorphic coals, semi-coke, coal tar, and coal gas are produced through medium and low temperature pyrolysis (Zhang et al., 2017a, 2017b).
Variations in toxicity of semi-coking wastewater treatment processes
Wastewater from a semi-coking WWTP located in Yulin, Shaanxi Province, China, with an average treatment capacity of 3000–5000 m 3 /d was studied. The WWTP applied a series of pretreatment and treatment processes, as shown in Fig. 1.The pretreatment units included an oil-water separator, a phenols extraction tower, an …
Intensified phenols extraction and oil removal for industrial semi …
However, this process performs bad in semi-coking wastewater treatment because of the higher complexity, toxicity, and heterogeneity. Besides, two other problems also limited One is the low performance of oil and dust removal, which poses a great challenge to operation stability and removal efficiency of ammonia and phenols in the …
Coking 101 An Introduction to Delayed Coking
Delayed Coker Feed Material. Delayed Coker (Coker) feedstock is material from the refinery vacuum unit, which is otherwise used as road asphalt. The objective of the Coker …
Treatment effects and genotoxicity relevance of the …
Considering the higher concentrations of COD, ammonia and toxic organic compounds in semi-coking wastewater, a physicochemical-biochemical combined …
Delayed Coking | FSC 432: Petroleum Refining
All of the heat necessary for coking is provided in the heater, whereas coking takes place in the coke drum; hence, the process is called "delayed coking.". The hot product vapors and steam from the top of …
From pollutant to valuable phenolic resin: a novel …
1. Introduction. Semi-coking is a typical coal chemical process broadly applied in Yulin region of Shaanxi Province, China. Utilizing the locally mined high quality, low metamorphic coals, semi-coke, coal tar, and coal gas are produced through medium and low temperature pyrolysis (Zhang et al., 2017a, 2017b).Large quantity of water is …
Ozone catalytic oxidation of biologically pretreated semi-coking
1. Introduction. In recent years, water pollution attributed to coking wastewater has apparently become a serious problem globally, and this problem is more pronounced in China [1].The wastewater produced by the carbonization of coal at low (500 °C–600 ℃) and medium temperature (700 °C–800 ℃) is called semi-coking wastewater …
Efficient degradation of semi-coking wastewater in three …
Semi-coking wastewater contains a rich source of toxic and refractory compounds. Three-dimensional electro-Fenton (3D/EF) process used CuFe2O4 as heterocatalyst and activated carbon (AC) as ...
Coking Coal
3.19.1.1.2 Coal is used in iron and steel industry. Coking coal is an essential input for production of iron and steel. The largest single use of coal in the steel industry is as a fuel for the blast furnace and for the production of metallurgical coke for reduction of iron ore or for injection with the hot blast.
Study on Combustion Kinetic Characteristics of Lignite and Semi-coking …
According to the TG-DTG curve of lignite and semi-coking dust during heating (Figure Figure3 3 a–g), the whole reaction process can be divided into four stages. The first stage is the process of heating dehydration and oxygen absorption weight gain of the experimental sample.
Processes | Free Full-Text | Study on Relationships …
The coking industry is an important basic energy and raw material industry, which connects coal, coke and steel industries and plays an important role in the industrial chain, economic construction, social …
Mechanism of carbon structure transformation in …
Abstract. The transformation of the carbon structure of coal during the coking process influences the coke microstructure and microtexture, and ultimately, the coke quality. …
What You Should Know About Metallurgical Coal
Hard coking coals like anthracite have better coking properties than semi-soft coking coals, allowing them to garner a higher price. Australian HCC is regarded as the industry benchmark. While PCI coal is not often classified as coking coal, it still is used as a source of energy in the steelmaking process and can partially replace coke in some ...
Tutorial: Delayed Coking Fundamentals
Delayed coking is a thermal cracking process used in petroleum refineries to upgrade and convert petroleum residuum (bottoms from atmospheric and vacuum …
Industrial coal coke briquette making process, briquetting machine
The industrial coke is made of pulverized coal as raw material, processed by coals blending (or single coal) and then briquetting to briquette, after that through the coking process gets the coke and coke-type coal products. The product with carbonization temperature around 600 degrees is coal coke (semi-coke type coal), and the product with ...
Desulfurization of coke by recycling COG in coking process
The technology of desulfurization of coke during coking is conceptually designed, in which the coking oven gas (COG) is blown into the coking chamber of the coke oven during the coking stage ...
Co-substrate promoting the biodegradation of refractory DOM in semi
The EEM spectra of semi-coking wastewater during the hydrolysis acidification -aerobic process are illustrated in Fig. 2. Generally, the fluorescence peaks with Em > 380 nm are designated as humic-like fluorescence, while peaks with Em < 380 nm are ascribed to protein-like (tyrosine or tryptophan-like) fluorescence [28] .
A review of the state-of-the-art research on carbon structure …
During the coking process, the majority of aliphatic groups transfer into aromatic clusters through aromatization and condensation, and with the removal of H bonds between molecules. ... Therefore, the insight into and the establishment of the 3D carbon structures of the semi-coke during the coking process is crucial for achieving a ...