Page 28 - 47
P. 28

Fig. 1 - Main chemicals from  long-term liability issues, problems with public ac-                           1. Facing up to the problems,
carbon dioxide                                                                                               getting down to the solutions
                              ceptance of onshore storage locations and limited
                                                                                                             To overcome these operation and environmental
                                                                                                             problems we propose a cross cooperation among
                                                                                                             industries and power generation sector including
                                                                                                             mainly refineries and steel factories (figure 2). This
                                                                                                             cooperation could allow to:
                                                                                                             •	 mitigate the ongoing challenges of these three

                                                                                                                   industries due to the strong impact of renew-
                                                                                                                   ables;
                                                                                                             •	 due to continuous high power load require-
                                                                                                                   ment of a huge refineries and steel plants, op-
                                                                                                                   portunity to operate power plants at full load
                                                                                                                   for long time avoiding cycling and stop of the-
                                                                                                                   se plants during week ends when the total grid
                                                                                                                   load is covered by renewables.

                              storage capacity in some essential regions.

                              Due to the increase of renewables power capac-                                 Many of the CCU options are well known by che-

                              ity within the generation mix, it is so important to                           mists and belong to the development of inorga-

                              move to an alternative to geological storage: the                              nic and organic chemistry finalized on commer-

                              CCU (Carbon Capture and Utilization).                                          cial basis during the twentieth century. Therefore,

                              CCU    isisdmefoinveindgastoaspertocuepsnsewwhemreobleyctuhleesCtOh2romuoglh-  CCU could     realistically contribute to  sreetduucpeaCt Oits2
                              ecule                                                                          emissions if  this cooperation will be

                              dedicated processes       (figure 1).  CtoOm2 cinoeuraldl  be used             best. Furthermore, due to the energy penalty of
                              to produce chemical       products,                        carbon-
                                                                                                             CCU, it is important that the conversion steps will

                              ation and to grow microalgae. Although these op-                               take place using electricity produced by renewa-

                              tions (many of them also funded by US DOE, De-                                 bles when users consumption is low and electri-

                              partment Of Energy) are for the most part in the                               city price is moving almost to zero or also under

                              R&D phase, they are offering potential for value-                              zero.

                              added applications of carbon dioxide captured                                  This proposed important synergy between power

                              from industrial installations or power plants. In this                         generation, refineries and steel plants is based on

                              framework         CCOO22  storage technology       could   have  a             the following assumptions:
                              role storing              for future utilization.
                                                                                                             •	 petrochemical and chemical companies can

                                                                                                             offer adequate technical knowhow to utilize

                                                                                                             CcoOm2 mmeorcviinagl pwlainthtsin; short time from demo to

                                                                                                             •	 opportunity for investors to profit from the

                                                                                                             production of consumer chemicals by treating

                                                                                                             CprOod2 uacst.a commodity rather than as a waste

Fig. 2 - Cross cooperation among refineries, steel plants and power generation sector                        This option could be of great interest of petro-
                                                                                                             chemical sector also due to the refining changes
                                                                                                             in progress.
                                                                                                             From 2008 to 2014 due to the liquid fuel con-
                                                                                                             sumption reduction of about 20% the European
                                                                                                             refining moved through a critical period. From
                                                                                                             2009 closed in Europe 11 small and old refiner-
                                                                                                             ies with a total refining capacity of 1.4 Mbbl/day.
                                                                                                             Important also to underline that the 2000/28/
                                                                                                             EU Renewable Energy Directive is compelling
                                                                                                             EU members states to include from 2020 within
                                                                                                             liquid fuels an energy content from renewables
                                                                                                             of at least of 10%. In addition the 2009/30/EU
                                                                                                             Directive Fuel Quality Directive is defining the liq-
                                                                                                             uid fuel quality introducing mechanisms suitable
                                                                                                             to control and reducing emissions (sustainability
                                                                                                             criteria of biofuels).

26 Impiantistica Italiana - Luglio-Agosto 2016
   23   24   25   26   27   28   29   30   31   32   33