Biomethane

A cornerstone of the energy transition

The Green Deal action plan, an agreement through which the European Union has committed to reducing greenhouse gas emissions to zero by 2050, includes the promotion of an efficient use of energy resources for a clean and circular economy.

Biomethane plays a considerable role within this. Unlike other renewable sources, it requires limited investment in terms of infrastructure and, in regard to emissions, is considered to be neutral as it is produced via the digestion of biomass from by-products, industrial processing waste and organic material.

The increase in the production and use of biomethane is receiving a strong boost thanks to incentives promoted at European level to make this important resource economically sustainable.

This represents a tangible contribution not only in the race to achieve the objectives set at EU and national level, but also in regard to the challenge posed by the energy transition that now involves the entire planet.

From waste to resource

Biogas is mostly made up of methane (between 50-70%) and is produced by the digestion of organic waste from agricultural biomass (dedicated crops, by-products, agricultural waste and animal manure), agro-industrial biomass (waste from the food processing chain), municipal wastewater sludge and organic fractions of municipal solid waste (OFMSW).

Biomethane is a biogas that has undergone a refining process to get a concentration of methane equal to or greater than 97%, which can be used in the same way as natural gas by being injected into the network or as biofuel in gaseous or liquefied form for transportation.

The conversion from biogas to biomethane occurs through a process of upgrading, which removes carbon dioxide through a multi-step molecular separation process. The various stages of the process (pre-treatment, dehydration, compression, etc.) are optimised depending on the upgrading technology chosen and the composition of the biogas to be treated. They are then complemented by network injection solutions (the transport or distribution network) or by quality analysis and fiscal metering solutions for the production of liquefied biomethane (LNG).

During the upgrading process, any contaminants and inert substances are removed from the biogas. Biomethane that is produced in this way can be sent to the injection system and can undergo the various stages of controls over the quality, metering, compression, regulation and possible odorisation that come before it is injected into the grid, a step that occurs in compliance with the specifications laid down by the applicable legislation.

Biomethane and Biogas production

Pietro Fiorentini’s experience in biomethane

From treating raw biogas to the injection of the biomethane into the grid for the granting of incentives or for the production of liquefied natural gas (LNG), Pietro Fiorentini is able to create integrated, customised solutions that guarantee maximum system production output and comply with contractually agreed-upon performance levels.

Thanks to the FioGrade upgrading system with membrane permeation, pre-treated biogas is separated from CO2 and converted into biomethane with a separation efficiency of over 99.5%.

With the injection of biomethane into the grid via the FioGrid system, renewable gas is sent for use in the transport sector. For this to occur, the biomethane must be processed in several steps: quality analysis, metering, compression, regulation and possible odorisation.

The biomethane solutions produced by Pietro Fiorentini are constantly growing across Italy and Europe, currently amounting to over 100 plants. This widespread presence attests to our success in the sector internationally.

The technological solutions that Pietro Fiorentini offers are supported by remote supervision and control services focused on predictive maintenance and data analysis. The proposed maintenance program enhances our service offer with inspections, metrological checks, operational maintenance and even plant management. This complete service allows us to ensure our clients have a single point of reference and, thanks to our widespread presence in the area, to guarantee a reduction in intervention times.

BiRemi™: towards a limitless gas network

The advent of renewable gas requires distribution and transmission networks to regulate the differences between injection and withdrawal. BiRemi™ is the group of solutions created by Pietro Fiorentini to cater to these new requirements: automation, treatment and gas flows redirection systems, for a limitless gas network.

Successful projects

Pietro Fiorentini success in biomethane production

Between 2019 and 2020, Pietro Fiorentini provided the integrated upgrading technology solution for one of the most important European projects for the production of biomethane from sewage sludge.

Pietro Fiorentini and Tonello Energie built the plant for biogas upgrading and injection of biomethane into the network within the SMAT purification site in Castiglione Torinese

The plant in Castiglione Torinese recovers and treats biogas generated by the anaerobic digestion of wastewater sludge and is made up of two complete biogas purification lines of 900 Nm3/h each, with the provision of a third line for a total potential of 2,700 Nm3/h.

Download the SMAT project case study

Pietro Fiorentini and CIB: United by a Common Goal

Since 2020, Pietro Fiorentini has been on the Board of Directors of the Italian Biogas Consortium, an industry association which includes the largest number of agricultural companies producing biogas and biomethane from renewable sources, industrial companies supplying plants, technologies and services, as well as bodies and institutions contributing to the promotion of anaerobic digestion for the agricultural sector.

Our common goal is to promote the development and use of this renewable source and increase the synergies between the gas industry and the agricultural sector.

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