Sulfur distribution within coal pyrolysis products

1998 ◽  
Vol 55 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Andrzej Czaplicki ◽  
Wojciech Smołka
ACS Omega ◽  
2021 ◽  
Vol 6 (5) ◽  
pp. 3763-3770
Author(s):  
Hao Yin ◽  
Jie Lu ◽  
Guijian Liu ◽  
Zhiyuan Niu ◽  
Xiangping Zha ◽  
...  

Author(s):  
Ankhtuya A ◽  
Namkhainorov J ◽  
Battsetseg M ◽  
Batbileg S ◽  
Batkhishig D ◽  
...  

The generated products of heating of coal in airless condition are hard residue, condensed liquid and gas. The condensed liquid product or tar is one of the most important product of pyrolysis. Therefore detailed investigation on pyrolysis of brown coal and it is tar studies provide basic theoretical knowledge for further thermal processing and application of coal. Have been determined main technical characteristics and elemental composition of the analytical sample of Aduunchuluun coal. The pyrolysis experiments have been performed at different heating temperatures (550-600oC) and determined the yields of pyrolysis products. The optimal heating temperature of pyrolysis of Aduunchuluun coal was chosen 500oC in which the yield of tar was higher (32%). The purified tar was subjected for FTIR analysis. Also the tar organic bases and organic acids are separated from the tar and the residual neutral fractions of pyrolysis tar were divided in to several fractions including aliphatic, aromatic and polar. And these fractions analyzed by GC/MS analysis and the determined most important organic substances are derivatives of benzene, naphtha-lene, phenols and alcohols. Адуунчулууны ордын нүүрсний пиролизын давирхайн судалгаа Хураангуй: Нүүрсийг агааргүй орчинд халуун задралд оруулахад хатуу, шингэн болон хийн бүтээгдэхүүн үүсэх ба чухал бүтээгдэхүүн нь шингэн бүтээгдэхүүн болох давирхай юм. Пиролизын давирхайн нарийвчилсан судалгаа нь тухайн нүүрсний цаашдын боловсруулалт болон хэрэглээнд онолын суурь мэдлэг болж өгдөг. Адуунчулууны ордын нүүрсний техникийн шинжилгээ (үнс, чийг, дэгдэмхий, илчлэг), элементийн бүрэлдэхүүнийг тодорхойлж уг ордын нүүрсийг халуун задралд (пиролизд 550-600 оС температурт) оруулж хий, шингэн (давирхайн задралын усны гарц 32%), хатуу бүтээгдэхүүний гарцыг тодорхойлж гарган авсан шингэн бүтээгдэхүүн давирхайн бүлгийн бүрэлдэхүүн, нил улаан туяаны спектрийн арга (НУТС), мөн янз бүрийн температурын хязгаарт нэрж гарцыг тогтоов. Мөн түүнчлэн Адуунчулууны ордын нүүрсний пиролизын давирхайн органик хүчил, суурийг нь салгаад үлдсэн саармаг нэгдэлд колонкон хроматограф ашиглан алифатик, ароматик, туйлт нэгдэл гэж ялган хийн хроматограф/масс спектрометр GC/MS-ийн багажит анализын аргаар нүүрсустөрөгчдийн найрлагыг нь тодорхойлоход бензол, нафталин, түүний уламжлал болон спиртүүд ихээр агуулагдаж байгааг тодорхойлов. Түлхүүр үг: пиролиз, давирхай, ароматик, туйлт, саармаг тос


2018 ◽  
Vol 32 (4) ◽  
pp. 4382-4390 ◽  
Author(s):  
Wei Xie ◽  
Rohan Stanger ◽  
Quang Anh Tran ◽  
Nathan Smith ◽  
Terry Wall ◽  
...  

2018 ◽  
Vol 176 ◽  
pp. 240-248 ◽  
Author(s):  
Da-qing Fu ◽  
Xiao-hong Li ◽  
Wen-ying Li ◽  
Jie Feng

Fuel ◽  
1988 ◽  
Vol 67 (11) ◽  
pp. 1568-1577 ◽  
Author(s):  
F MIKNIS ◽  
T TURNER ◽  
L ENNEN ◽  
D NETZEL

2014 ◽  
Vol 912-914 ◽  
pp. 486-489 ◽  
Author(s):  
Yan Mei Wang

coal pyrolysis and pyrolysis products deep processing is an effective way to achieve efficient use of clean coal , has important theoretical and strategic significance. Through the analysis of the nature of the low-temperature coal tar , coal pyrolysis mechanism from starting , discusses the improved yields five factors of coal tar and coal tar is proposed to improve the yield of several process conditions.


2015 ◽  
Vol 55 (5) ◽  
pp. 319
Author(s):  
Lenka Jílková ◽  
Karel Ciahotný ◽  
Jaroslav Kusý

Tars from pyrolysis of brown coal can be refined to obtain compounds suitable for fuel production. However, it is problematic to refine the liquids from brown coal pyrolysis, because high molecular compounds are produced, and the sample solidifies. Therefore we decided to investigate the possibility of treating the product in the gas phase during pyrolysis, using a catalyst. A two-step process was investigated: thermal-catalytic refining. In the first step, alumina was used as the filling material, and in the second step a catalyst based on W-Ni was used. These materials were placed in two separate layers above the coal, so the volatile products passed through the alumina and catalyst layers. Pyrolysis tests showed that using the catalyst has no significant effect on the mass balance, but it improves the properties of the gas and the properties of the organic part of the liquid pyrolysis products, which will then be processed further.


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