Results 11 to 20 of about 546 (155)

COAL TAR DYES [PDF]

open access: yesSchool Science and Mathematics, 1918
n ...
openaire   +2 more sources

Comparison of Tar Samples from Reaction Zone and Outlet in Ex-Situ Underground Coal Gasification Experiment

open access: yesEnergies, 2021
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.
Lele Feng   +3 more
doaj   +1 more source

Pyrolysis characteristics and product distribution of low-rank coal with heat-carrying particles adopting TG-FTIR and a novel self-mixing down tube reactor

open access: yesCase Studies in Thermal Engineering
A novel self-mixing down tube (SDT) pyrolyzer has been developed, which can separate the heat carrying particles preheated in the fluidized bed from the coal, and the two can be mixed through a specific structure to instantly heat the coal particles to a
Yue Gao, Lanyi Sun, Yuanyu Tian
doaj   +1 more source

Distribution of early and middle Jurassic tar-rich coal and its geological controls in Northern Xinjiang

open access: yesMeitan kexue jishu
The tar-rich coal resources in northern Xinjiang are rich, accounting for about half of the country's tar-rich coal. The rational development and utilization of tar-rich coal resources in this region is an important supplement to Chinese coal resources ...
Shuzheng NING   +4 more
doaj   +1 more source

Numerical Simulation of the Tar Mist and Dust Movement Process in a Low-Temperature Dry Distillation Furnace

open access: yesJournal of Chemistry, 2020
In the low-temperature dry distillation of low-rank coal, the important liquid product of coal tar is produced, but its quality and utilization rate are degraded by entrained dust.
Qiuli Zhang   +6 more
doaj   +1 more source

An Experimental Study on the Quantitative and Qualitative Characteristics of Tar Formed during Ex Situ Coal Gasification

open access: yesEnergies, 2023
Over the three-day gasification test of a large coal block with oxygen in atmospheric pressure conditions, the yield and composition of the tar collected was investigated.
Marian Wiatowski
doaj   +1 more source

Organic geochemical characteristics and geological indicative significance of tar-rich coal

open access: yesMeitan xuebao
As a strategic mineral resource that integrates coal-based fuel, liquid oil, and gaseous energy, the efficient exploration and tiered utilization of tar-rich coal are of great significance for ensuring national energy security and maximizing the value of
Yuan BAO   +5 more
doaj   +1 more source

An Empirical Study on Laboratory Coke Oven-based Coal Blending for Coking with Tar Residue

open access: yesChemical Engineering Transactions, 2018
Tar residue is the solid waste produced in coking plants or gas generators. Utilizing tar residue as additive in coal blending for coking is an effective approach for coal coking in our country, not only improving the yield and nature of coking products,
Wenqiu Liu
doaj   +1 more source

Differences and origins of hydrocarbon generation characteristics between tar-rich coal and tar-containing coal in Yan’an Formation, Ordos Basin

open access: yesMeitan xuebao
Properties of oil and gas resource found in tar-rich coal present a novel avenue for enhancing domestic oil and gas supply. The characteristics of hydrocarbon generation kinetics are critical factors that influence the in-situ pyrolysis conversion ...
Ruihui ZHENG   +6 more
doaj   +1 more source

Current situation and prospect of exploration and research on tar-rich coal resources

open access: yesMeitan xuebao
Tar-rich coal is a kind of coal-based oil and gas resource with a solid foundation for large-scale development. However, its resource exploration still faces challenges, including insufficient universality of tar yield prediction methods, low exploration
Li MA   +5 more
doaj   +1 more source

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