Coal tar is a thick dark liquid which is a by-product of the production of coke and coal gas from coal. [2][3] It is a type of creosote. It has both medical and industrial uses. [2][4] Medicinally it is a topical medication applied to skin to treat psoriasis and seborrheic dermatitis (dandruff). [5] .

Tar coal combustion showed higher radiative intensity, flame temperature, and soot volume fraction than raw coal. The intrinsic mechanisms of the soot precursors generation were revealed through mechanism analysis. Among the soot precursors, A1 had the highest concentration, while the concentrations of A2-A4 decreased.

2019年1月1日 · When distilled, the rich organic makeup of coal tar produces a series of industrial oils and a solid product called coal tar pitch (CTP), which accounts for about 50 wt% of the initial tar. CTP has a high carbon yield and on the basis of its physicochemical characteristics sports unique binding and impregnating properties, which cannot be fully ...

Coal tar is the primary source for many basic chemicals and also provides raw materials for a number of other industries. This paper aims to present a systematic mapping and a brief review of the study areas related to coal tar/pitch over the past 50 …

2020年11月24日 · Coal tar is a liquid by-product of coal gasification and carbonation processes. This liquid oil mixture contains various kind of useful compounds such as benzoic aromatic compounds and...

2023年10月26日 · The study found that the carrier γ-Al 2 O 3 tar cracking played a catalytic role, increasing the proportion of light oil and phenol oil in the tar. Compared with the pyrolysis of raw coal,...

2024年8月6日 · In this paper, we will introduce the manufacturing method of coal tar (high temperature), including the steps of raw material preparation, high temperature cracking, condensation separation and refining and purification.

In this study, FTIR analysis was performed on all 12 raw (as-received) CTP samples. Fig. 4 indicates the FTIR spectra of CTP 1-6, respectively. The FTIR spectra of the remaining six CTP samples...

2020年6月6日 · Compared with the pyrolysis of raw coal, the vapor-modified catalytic cracking tar yield increases from 9.9 to 13.8 L, and the gas production increases by 39.40%; the tar yield decreases from 1.324 to 1.0049 g, and the tar cracking rate increases by 24.10%.

2024年5月29日 · In the present study, low-temperature coal tar (LTCT) was used as an analogue to pyrolysis product, mixed with semi-coke and coal dust, representing pyrolytic byproducts and nonpyrolytic substances, respectively. The LTCT mixtures were tested with vacuum distillation at various pressures and temperatures.