Page 28 - European Energy Innovation - Winter 2016 publication
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28  Winter 2016 European Energy Innovation


ASCENT will provide a robust proof-of-
concept of three related high temperature
processes for CO2 separation

A SCENT ( will provide a                    Improved heat integration options become available than
               robust proof-of-concept of three related high    for comparable low temperature capture processes, where
               temperature processes for the separation of      the possibility for simultaneous reactions will be limited
               CO2from gaseous streams; each will lead to a
step-change in efficiency of carbon removal in three types of   Together, these three major advantages can be usefully
pre-combustion capture, producing the hydrogen needed           implemented by several competing technologies with yet
for highly efficient low-carbon power production. The project   another unifying concept in that reactive solid materials
brings together small and medium enterprises preparing to       are needed in all cases. These materials must be able to
launch these concepts with the support of leading research      be carbonated (or reduced) and regenerated (or oxidised)
institutes, universities and industrial partners.               in a cyclic fashion. Lab scale experimentation under highly
                                                                idealised conditions, not highly representative of industrial
The essential feature linking the three technologies is the     scale applications have shown the feasibility and advantages
use of a high temperature solid sorbent for the simultaneous    of all three of these technologies. ASCENT aims to provide a
separation of CO2 during conversion of other carbon             robust proof-of-concept of these technologies using industrially
containing gases (CO and CH4) into H2. Each technology          relevant materials under industrially relevant conditions. l
has the ability to provide a step-change in efficiency
because they all separate the CO2 at elevated temperatures
(>300°C) providing for more efficient heat integration
options not available in technologies where the separation
occurs at lower temperatures. Each process matches
both endothermic and exothermic heat requirements
of associated reactions and sorbent regeneration in an
integrated in situ approach.

The synergies between the three technologies are strong,
allowing both multiple interactions between the different
work packages and allowing a consistent framework for
cross-cutting activities across all the technologies. Each
technology will be proven under industrially relevant
conditions of pressure and temperature, at a scale that
allows the use of industrially relevant materials that can be
manufactured at a scale needed for real implementation.
This represents a necessary step to be taken for each of
the technologies before setting out on the route to future
demonstration level activities.

ASCENT, Advanced Solid Cycles with Efficient Novel              Figure 1 Conceptual cycles for the ASCENT technologies:
Technologies, addresses the need for original ideas to          Ca-Cu, CSHIFT and SER reaction systems respectively.
reduce the energy penalty associated with capturing carbon
dioxide during power generation, and create a sustainable         Contact details:
market for low carbon emission power with low associated
energy penalties.                                                 ENEA - C.R.Casaccia
                                                                  Dept. of Technologies for Energy
The unifying concept of the ASCENT project is the high            Via Anguillarese 301 - S.P. 081, 00123,
temperature CO2 capture during production of hydrogen             Santa Maria di Galeria, Rome
fuel by means of the steam-methane reforming and                  Tel: +3906 3048 4494
associated water-gas shift reaction. The conditions under         Fax: +3906 3048 4811
which the hydrogen fuel is produced is inherently optimized       Email:
for highly efficient electricity generation (both gas turbines
and fuel cells).

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