Desulfurization of Tabas Coals Using Chemical Reagents

author

  • Mohammad Reza Ehsani Chemical Engineering Department, Isfahan University of Technology, P. O. Box 84156, Isfahan, I.R. IRAN
Abstract:

Large reserves of coal in Tabas region of Iran are characterized by low ash and high caking index, suitable for use in metallurgy as coking coal. However, these coals cannot be gainfully utilized because of their high sulfur content. In this work, studies on desulfurization of Tabas coals were carried out in a batch reactor using various reagents. The most effective reagents, Fe2(SO4)3 , FeCl3 , NaOH, CH3OH, HNO3, and H2O2 , were used to remove sulfur and ash from Tabas coals under reasonable pressure and temperature. Results obtained from coal desulfurization experiments using these reagents are presented in this paper. It was found that ferric sulphate is one of the suitable chemical reagent for desulfurization of Tabas coal which could be used to remove most of the fine distributed pyritic sulfur content.  

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

desulfurization of tabas coals using chemical reagents

large reserves of coal in tabas region of iran are characterized by low ash and high caking index, suitable for use in metallurgy as coking coal. however, these coals cannot be gainfully utilized because of their high sulfur content. in this work, studies on desulfurization of tabas coals were carried out in a batch reactor using various reagents. the most effective reagents, fe2(so4)3 , fecl3 ...

full text

Characterization and Washability of Pyrite in High Sulphur Coals from Tabas, Iran

Environmentally and technologically sulphur is a deleterious constitute in coal which makes it unsuitable for use in metallurgical industries unless the sulphur level can be reduced to the tolerable limit. Characterization of the various forms of sulphur and their associations in coal is an essential issue to find and propose a suitable desulphurization method. In this research, to evaluate sul...

full text

chemical recycling of polycarbonate waste using conventional heating and microwave assisted method

پلی کربنات یکی از پلاستیکهای مهمی است که به صورت گسترده در تولید لوحهای فشرده، قطعات رایانه، مواد ساختمانی و غیره مورد استفاده قرار می گیرد. این پلیمر بصورت عمده از تراکم مونومر بیس فنولa (bpa) و کربنیل کلرید یا دی متیل کربنات ها بدست می آید. در سالهای اخیر بازیافت شیمیایی پلی کربنات بیشتر مورد توجه بوده است. بازیافت شیمیایی پلی کربنات برای بدست آوردن مواد اولیه آن با روشهای متفاوتی مانند تجزی...

Insight into hydroxides-activated coals: chemical or physical activation?

The objective of this paper is to get an insight into the chemical activation mechanism using KOH and NaOH as activated agents. Three coals have been selected as carbon precursors. It was found that KOH and NaOH develop a similar narrow microporosity, independently of the coal rank, whereas only KOH generates supermicroporosity. Temperature-programmed desorption experiments, carried out with im...

full text

Selective Reagents for Chemical Ionization Mass Spectrometry

Much of the power of chemical ionization mass spectrometry stems from the finding that the characteristics of the Cl mass spectrum produced is dependent on both the nature of the reagent gas and the type of ion-molecule reaction used to ionize the sample. Different structural information can be obtained with different reagent gases. As a consequence, it is possible to control the type and quant...

full text

Quantification of Linagliptin by Chemical Derivatization with Appliance of Chromogenic Reagents

Two simple, specific, accurate, precise, sensitive and cost effectivespectrophotometric methods have been developed and validated for quantification oflinagliptin in pure form and pharmaceutical formulations. Method A is established onthe computation of absorbance of purple coloured chromogen complex at 463 nmwhich is formed by the condensation reaction of the primary amine group oflinagliptin ...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 25  issue 2

pages  59- 66

publication date 2006-06-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023