Decarbonisation Technology - May 2024 Issue

Gasoline reactor

Fractionation

MeOH

LPG

Gasoline reactor

Fuel gas

Heavy

Compressor

Separator

gasoline

Gasoline

Figure 2 Simplified 3D model of MethaFuel unit

products in the market can also be shared, and the products can be blended. The integration into an existing utilities infrastructure is also beneficial, as these are typical for chemical and refining processes, reducing the investments required and facilitating integration. Such integration can also improve the footprint of the low-carbon gasoline, as the utilities serve many other units. Specifically, CAC Engineering has conducted several studies to identify the synergies of connecting MethaFuel systems in close proximity to existing facilities. While optimisation approaches are specific for each production site, they can include: • Energy coupling with other process systems. • Transfer and further processing of product and byproduct streams common with other process plant. • Sharing process equipment such as the methanol feed tank. • Use of a common steam and condensate system. • Use of a common cold water production system. • Use of shared wastewater treatment (if necessary). • Use of a common flare system/thermal exhaust gas treatment system. • Energy recovery from exhaust gases/heating gases. • Extraction of unused low-temperature heat, for example, into local heating network at location. • Implementation of a gas engine to generate green electricity from the heating gas produced as a byproduct.

In order to specifically identify how MethaFuel can be integrated in an existing refinery or chemical site, a value engineering study is recommended. Value engineering will serve as a useful tool for optimising the new production facility and enhancing business objectives efficiently and effectively. By systematically analysing the sites, services, and processes, the existing facility can evaluate the great value of low-carbon products in its product portfolio. CAC Engineering in the energy transition Over six decades, CAC has successfully executed projects within the refining, petrochemical, and chemical sectors. Building on experience in chlor- alkali electrolysis solutions, it can also provide expertise in integrating water electrolysis projects as part of the power-to-X value chain. In conclusion, integrating a synthetic gasoline production plant into existing refineries and chemical sites and substituting fossil fuels is crucial for reducing CO2 emissions while ensuring continuity of supply. Innovative integration of renewable and low-carbon alternatives fosters energy security while creating economic opportunities. Collaboration among governments, industries, and consumers is imperative to realise the full potential of this substitution. VIEW REFERENCES Constanza Berckemeyer constanza.berckemeyer@cac-chem.de