Title: Carbonate melt-based flue gas desulphurisation: material balance and economic advantage

Authors: Valery Kaplan; Ellen Wachtel; Nurlan Dosmukhamedov; Igor Lubomirsky

Addresses: Weizmann Institute of Science, Herzl St 234, Rehovot, 76100, Israel ' Weizmann Institute of Science, Herzl St 234, Rehovot, 76100, Israel ' Satbayev Kazakh National Technical University, Satbayev St. 22a, Almaty City, Kazakhstan ' Weizmann Institute of Science, Herzl St 234, Rehovot, 76100, Israel

Abstract: We have recently proposed a two-stage process for scrubbing sulphur from flue gas of coal-fired power plants: 1) the gas is brought into contact with a (Na, K, Li)-carbonate eutectic melt, producing sulphates; 2) the eutectic is regenerated by purging with CO from coal combustion, and recycled. Only the coal requires continual replenishing. In the current work, a combined scrubbing/regeneration flow diagram is presented and the material balance calculated. The economic advantages of the dual process are evaluated, taking into consideration high value end-products and the effect of sulphur content on the quantity of additional coal required for CO production. [Received: March 24, 2017; Accepted: July 17, 2017]

Keywords: flue gases; coal-fired power stations; molten carbonate melt; desulphurisation material balance; desulphurisation economic advantage.

DOI: 10.1504/IJOGCT.2018.091528

International Journal of Oil, Gas and Coal Technology, 2018 Vol.18 No.1/2, pp.25 - 38

Received: 24 Mar 2017
Accepted: 17 Jul 2017
Published online: 04 May 2018 *

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