Scale-up of the carbonate looping process to a 20 MWth pilot plant based on long-term pilot tests. (September 2019)

• Record Type: Journal Article
• Authors: Hilz, Jochen; Haaf, Martin; Helbig, Martin; Lindqvist, Niklas; Ströhle, Jochen; Epple, Bernd
• Is Part Of: International journal of greenhouse gas control. Volume 88(2019)
• Page Start: 332
• Page End: 341
• Publication Date: 2019-09
• Subjects: ASU air separation unit -- CaL calcium/carbonate looping -- CAPEX capital expenditure -- CFB circulating fluidized bed -- CFD computational fluid dynamics -- FGD flue gas desulphurisation -- GPU gas processing unit -- IHCaL indirectly heated carbonate looping process -- LHV lower heating values -- LS loop seal -- OPEX operational expenditure -- SCR selective catalytic reduction -- TIC total installed cost -- TGA thermo-gravimetric analysis -- TRL technology readiness level; Calcium looping -- CO2 capture -- Pilot plant -- Dual fluidized bed -- Oxy-fuel regenerator; Greenhouse gases -- Environmental aspects -- Periodicals; Air -- Purification -- Technological innovations -- Periodicals; Gaz à effet de serre -- Périodiques; Gaz à effet de serre -- Réduction -- Périodiques; Air -- Purification -- Technological innovations; Greenhouse gases -- Environmental aspects; Periodicals; 363.73874605
• DOI: 10.1016/j.ijggc.2019.04.026
• Languages: English
• ISSNs: 1750-5836

Abstract

Highlights: CaL experiments at a 1 MWth pilot plant under realistic operating conditions. Assessment of different coupling concepts for the interconnection of CFB reactors. Definition of operating parameters for scale-up of the CaL process to demonstration scale. Conceptual design and engineering of a 20 MWth demonstration pilot. Abstract: An efficient post-combustion capture technology is the carbonate looping (CaL) process reducing the amount of CO2 released by fossil fuelled power and industrial plants. Limestone based sorbents are circulated between two interconnected circulating fluidized bed (CFB) reactors. In a first reactor, the carbonator, the main part of CO2 contained in the flue gas of an upstream emission source is absorbed by CaO. The CO2 is released and the sorbent regenerated under oxy-firing conditions in a second reactor, the calciner. Numerous experimental pilot tests in semi-industrial scale proved the feasibility of this technology, whereof complementary results are published in this paper. A demonstration plant constitutes the next step of developing the CaL technology. This paper presents the development of a 20 MWth demonstration pilot considered as a milestone with regard to industrial application of the technology to answer remaining technological and economic questions. A conceptual design for this 20 MWth demonstration pilot is presented. An existing 600 MWel power station serves as a host unit for the boundary conditions of this demonstration pilot.