Process Optimization

Editorial Comment: Processing a sustainable future

An emerging topic along the entire oil and gas value chain is the move toward <i>sustainability.</i> Each company has a somewhat different definition of what sustainability means to its operations.

Onsite

Business Trends: EPC 2030: Five vital characteristics that will define the EPC firm of tomorrow

The state of the global engineering, procurement and construction (EPC) industry can accurately be described as “challenging.” Operating in an environment of volatile, uncertain, complex and ambiguous conditions, EPC firms are facing unsustainable levels of stress.

FCCU catalyst reformulations: Reducing risk and guaranteeing value with collaboration/testing

Hellenic Petroleum S.A.’s Aspropyrgos refinery is located near Athens, Greece. It has a total refining capacity of approximately 7.5 MMtpy and a Nelson complexity index of 9.7. The refinery was built in 1958 and has undergone several upgrades, including the installation of a fluid catalytic cracking unit (FCCU).

Optimization study in hydrocracker unit using simulation model

Hydrocrackers are key refinery units that convert heavy feed components into valuable lighter products. The profitability of these units is directly related to this conversion level. Conversion reactions take place in a nearly pure hydrogen environment, with the help of selective catalysts, under high pressure and high temperature. The products of the unit are separated in the fractionator section. Unconverted oil taken from the fractionator bottoms reveals the conversion performance of the unit.

A new liquid-phase isomerization process for xylene loop debottleneck and energy savings

In a typical xylene loop, C₈ aromatics are fractionated out of a heavy reformate C₈+ aromatics stream and collected in the xylene column overhead. Then, paraxylene (PX) from the C₈ aromatics stream is recovered as product—usually by an adsorption or crystallization process—in the PX recovery section.

Can ammonia be a future energy storage solution?

Ammonia is well known as a fertilizer. However, it is also a potential carbon-free fuel and an excellent solution for storage of renewable electricity, especially if the syngas needed for producing the ammonia is made by electrolysis.

Heat Transfer: Designing electric process heater systems for catalytic regeneration

Achieving effective catalyst regeneration requires a process that produces a very high level of heat in a very efficient manner. Over the years, several different approaches have been taken to create this required heat. Traditional steam has been a popular choice, as has heated transfer media. However, these methods have limitations.

Digital: Better maintenance through better data

When I talk to professionals in the refining and petrochemical businesses, they are always interested in how new technologies can improve operational efficiency, make plants safer and increase profitability.

Optimization: Steam methane reformer vs. electrolysis technology

Hydrogen market demand is forecast to expand. Bulk petrochemicals, ammonia, methanol and gasoline refining consume nearly two-thirds of global hydrogen demand.