Registration
Opening of the Conference
Alessandro Bertoglio – ASSOCARTA
Preparing for the Green New Deal: the Example of a Couple of Paper Companies
Riccardo Balducci – SOFIDEL and Massimo Santolini – DS SMITH PAPER ITALIA
The deadlines set at national and European level for fighting climate change are getting closer, and the European Union is updating its targets, raising the bar. The new target is the carbon neutrality by 2050. The evolution experienced in the past years in the field of energy efficiency, renewables and Industry 4.0 will have to be further accelerated in order to meet the targets. Paper mills already have to plan their decarbonisation path and their targets to 2030 and 2050 in order to reduce the impact of the increasing burdens. Two examples of business approaches to this global challenge will be presented at the meeting.
Hydrogen, energy, economics: myths and real opportunities in energy transition
Riccardo Bernabei – SNAM RETE GAS
Hydrogen can give e crucial contribution to reach the European decarbonization targets. An analysis of the most interesting sectors, mobility and “hard to abate” industrial uses in particular, the potential penetration in the energetic mix and the barriers to overcome to allow the full exploitation of hydrogen.
The development of a hydrogen market for Italy: national specificities to be enhanced in European competition
Andrea Pisano – ENI
Combustion System Upgrade for Tissue Mills
Guido Lenzi – ANDRITZ NOVIMPINATI
Hood air system buners are, together with the steam boiler, the main thermal energy consumer of a tissue mill. Yankee hoods installed in the past are often equipped with burners designed to guarantee drying capacity and high reliability, but with no specific target about efficiency, safety, emissions. ANDRITZ Novimpianti has developed a long-term experience at upgrading existing combustion systems with tailor-made solutions, in order to improve thermal efficiency. The main target of the combustion system upgrade for tissue mills are: increasing the burner combustion efficiency on the full operation range; improving existing burners and combustion chambers design; lower CO and NOx emissions; air-to-gas ratio handled by automatic control; improvement in safety of the whole process, in compliance with latest rules; technology applicable to both in-line and corner burners; specifically designed to be part of hood & air system integrated control system. In its speech, ANDRITZ Novimpianti will describe the technology developed and optimized through several successful references in combustion system upgrade.
Effective and Efficient Solutions for Energy Recovery in the Vacuum System
Federico Spinelli – LARIO ENERGY
The growing attention to environmental issues and energy saving has led more and more paper mills to choose to intervene on the vacuum system, replacing traditional liquid ring pumps with new generation systems based on turbo-blowers, which guarantee a significant reduction in consumption of electricity and do not require water to operate. There are several alternatives on the market, but in any case, the flow rate of air discharged by this type of machine is considerable and has a very high energy content. Starting from this assumption, Lario Energy has studied different systems which are able to recover the available energy effectively and efficiently. The high temperature at which this heat is available, makes it particularly suitable to heat the air that is blown in the hood through the sheet stabilization and pocket ventilation system. Heat transmission can take place directly, in a special air-air exchanger, or indirectly, by means of a carrier fluid. Through the analysis of real cases it is possible to understand which are the factors that actually influence the design choices, to verify the correspondence between the theoretical values and those measured in the field, to quantify the thermal energy recovered and also to estimate the return time of the investment.
Doing More with Less… and No Waste
Paolo Masiero – SOLAR TURBINES
Decarbonization, Digitalization and Decentralization: how gas turbines cogeneration can support the Energy Revolution. Solar Turbines is very well known to the Tissue industry as a robust and experienced solution provider for gas-turbine cogeneration plants and tissue direct drying integrations. In the midst of the restart after COVID19 and in an economy with an increasingly green connotation, also the management of energy has to be able to evolve in terms of planning, operations and flexibility. We are requested to make our turbines to highly perform with less fuel, to produce only when it’s needed, increasing the uptime in an efficient and sustainable way. Starting by supporting the design of new operative conditions of the Yankee Hood driven by the integrated cogeneration in coordination with the main market players, Solar Turbines, with its “Tissue-Cogen” experts, is now suitable to develop analysis and tools able to simulate and evaluate economic and environmental performance and therefore to achieve, monitor and maintain the main sustainability and efficiency goals, first of all decarbonisation. Solar Turbines presentation will give an insight how the design and planning phase merged with the new combustion systems, the increased capabilities to non-conventional and high hydrogen fuels and connectivity will create value through lifecycle support for its customers.
New technological frontiers in the paper mill: decarbonising with cogeneration 
Carmine Faralli – BAKER HUGHES
Baker Hughes is an energy technology company that provides solutions to energy and industrial customers worldwide. Built on a century of experience and with operations in over 120 countries, our innovative technologies and services are taking energy forward – making it safer, cleaner and more efficient for people and the planet. In Italy Baker Hughes operates mainly through the historic Nuovo Pignone legal entity, today is part of the Turbomachinery & Process Solutions business with headquarters in Florence. It is very active in industrial sectors such as paper thanks to products such as gas and steam turbines, used for power generation in both simple and cogeneration cycles. Baker Hughes has always been committed to providing advanced solutions able to optimize production, but also to reduce operating costs and to improve industrial plants performance with particular attention to reducing CO2 emissions, minimizing environmental impact. A cogeneration cycle powered by a Baker Hughes turbine such as the NovaLTTM is able to increase energy efficiency and reduce the emission of greenhouse gases. The turbine can operate continuously for over 4 years, remote monitored. The NovaLTTM family turbines can be fueled by hydrogen. This and more will be the subject of our presentation, where specific real cases will be shown for the paper industry sector, applicable for the entire industrial sector.
Case history: two types of intervention for energy efficiency in paper mills 
Alan Carnevali – RENOVIS
Two of the solutions proposed by Renovis Rational Energy Solutions, a UNI CEI 11352-certified ESCO that implements energy efficiency solutions, will be illustrated to the participating audience and it will be explained how the work carried out at the plant of a leading company in the tissue sector has enabled the company to get significant savings in natural gas by implementing the following solutions:
1. Heat recovery from turbogas. The energy efficiency project carried out by Renovis exploits the thermal energy recovered from the combustion fumes coming out of the GVR (Recovered Steam Generator) located in the vein of a 17MW gas turbine. Through the system, these fumes are conveyed through a heat exchanger that generates a thermal power of 5.5 MW entirely obtained from the described thermal waste. This power is used to produce water at 90°C for an insulated tank. The latter then generates a flow of hot water for heating the plant and for a second exchanger that preheats the make-up water for the GVR. The exhaust fumes are finally disposed of through a new chimney by means of a specially designed fan. The system is fully automated and thanks to the specially designed PLC is able to manage the hydraulic and aeraulic flows by means of pumps and fans driven by inverters and dampers managed by servomotors.
2. Air cooling to the co-pressor of a gas turbine: The average seasonal temperature of the site affects the average thermal efficiency of the plant’s combined cycle Turbogas co-generator. In summer with ambient temperatures between 30°C and 35°C, the turbine has an average nominal thermal efficiency of less than 32%. In these environmental conditions, cooling the air entering the compressor – by means of the heat exchanger made by Renovis – down to a temperature between 14°C and 17°C produces an increase in average thermal efficiency of 1.5%, close to nominal conditions. This increase in efficiency corresponds to an electrical power generated of between 1,000 kW and 1,500 kW. In order that the overall energy balance, including the energy used to cool the air, corresponds to a real economic benefit, it is obviously imperative that the necessary cooling energy is produced in the absence of electrical consumption. In the case of the application described here, part of the water at 90°C accumulated in the recirculation tanks is withdrawn from the heat recovery system mentioned in point 1.1 and sent to a LiBr absorption refrigeration unit specially sized to supply the cooling energy needed to cool the air entering the compressor to a constant temperature of 15°C.
End of the Conference
