Optimization of energy consumption, balance between heat and electricity, renewal of CHP

Project Description

The use of CHP technology in the Italian factories (paper mills) of Lucart Spa dates back to the end of the 80s. Even today, cogeneration represents the best technology for optimizing the use of primary fuel.

The project took into consideration a review of the electrical and thermal consumption of the 3 plants located in Lucca and the updating of the existing cogeneration plants with the most recent technologies.

Project Purpose

The project was carried out in the 3 factories over a period of approximately 4 years which saw the following phases:

– optimize and reduce both electrical and thermal consumption of the factory;

– studying the best energy supply solution with a view to environmental and economic sustainability;

– analyze the residual energy sources in the plants to find the best solution for use;

Project Evaluation

The most important actions and results were:

  • Diecimo (LU): modification of pulp refining sections, replacement of 2 cast iron dryers with 2 steel dryers, complete replacement of the cogeneration plant with low emission technology (NOx) capable of using a methane-hydrogen mix.
  • Porcari (LU): replacement of 1 cast iron Yankee dryer with 1 steel Yankee dryer, complete replacement of the cogeneration plant with low emission technology (NOx) capable of using a methane-hydrogen mix.
  • Castelnuovo Garfagnana (LU): replacement of the gas turbine, use of the residual heat of the turbine fumes to heat the production premises and a district heating project is underway for some public premises adjacent to the factory.

The results were important as a reduction in specific consumption per ton of paper produced and as an absolute reduction in tons of CO2 (see below)

Massimo Pasquini – CEO Lucart S.p.A.

Lucart is strongly determined to decarbonise its production activities, in compliance with the Paris agreements and the 2030 agenda.

The project is part of a broader plan drawn up by Lucart to reduce the climate changing emissions related to energy consumption, which includes, in addition to the technological upgrading of the European factories, also installation of photovoltaic panels, biomass power plants for the production of electrical and thermal energy, reducing electricity consumption by the technological renovation of its production systems, purchasing of renewable energy through PPA and increasing the production capacity of recycled paper.

Main Features of the project

CO2 Emissions saved (tCO2/year) à 10.000

Investment à about 26,0Meuro

Partnerships à Baker Hugues, Solar Turbines, Tecnoterm Energy, Toscotec

 

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