Reducing CO footprint What you should be focused on/looking at now – Establish base CO footprint and benchmark to identify gaps, then .........
Energy e ciency – Low-cost
Energy e ciency – Moderate/high-cost Heat exchanger network additions/spares for cleaning Hydrogen network optimi s ation Electri cation Fugitive emissions moni t oring and mitigation Replace exchangers with higher e ciency plate and frame or other VFD motor upgrades Cogen - CCPP
Energy e ciency – No/low-cost
Reduce slops reprocessing Reduce/eliminate aring Avoid over-re uxing columns Minimise recycles Steam trap maintenance Fired heater excess O minim i s ation Assess turndown protocols to avoid energy throwaway Lower (e.g. lighter/sweeter) CO intensity crudes
Higher activity catalysts Column upgrades (trays and packing) to improve separation e ciencies Tube inserts to achieve better approach and/or manage fouling Impeller/control valve sizing to optimi s e pump e ciencies Improved compressor anti-surge control system
Figure 3 Journey for reducing CO₂ footprint
can positively impact Scope 1, 2 and 3 emissions defined overleaf. This can apply to both new process unit invest- ments and revamping of existing facilities and assets. This pillar includes operational best practices, such as solutions that can be done at any time to improve unit performance, reduce energy consumption and resulting emissions, and improve profitability. A small inventory of such ideas that could be considered and acted on are shown in Figure 3 . Integration of pillars and E6 model The four pillars, with the embedded Six Efficiencies, can quickly lead to a large idea inventory covering a wide range of implementation schedules, capital investment, yield shifts, and economic and emission-reduction impacts. A Concept Development Workshop can start to bring these ideas together into a single view to evaluate potential and chart a strategy. In these workshops, all ideas are pre- sented and discussed. Determination is made if it is worthy of further study. The workshop is a collaborative discussion among various individuals, including those familiar with the corporation’s goals and constraints, assets, flexibility, and existing limitations. Bringing in a process licensor or outside consultant with an expansive knowledge of the technologies, along with knowledge of the latest advances and offerings, also is critical to ensure the discussion includes a full set of ideas. The preparation needed to conduct a valuable workshop
should not be underestimated. Collecting the proper data and drawings and having foundational conversations about what boundaries should be considered in advance of the workshop is critical. With proper preparation, a valuable Concept Development Workshop usually can be conducted in a single day. Bringing in a process licensor or outside consultant with knowledge of the latest advances and offerings is critical to ensure the discussion includes a full set of ideas The workshop output is generally a long list of project ideas. Some ideas might be so attractive and obvious that the refiner will start to take the necessary actions to con - duct operational changes or engineering studies to ready for rapid implementation. However, most of the ideas will need more investigation to better understand what is involved and what can be expected in return, from both an economic and emissions reduction perspective. Bringing all the ideas together into one study to under- stand how each idea shapes up relative to the rest is the
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Scope 1 and 2 - / MT CO E vs CO reduction
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Cumulative CO reduction (MTD)
Figure 4 Emissions Reduction Roadmap study (also known as a carbon abatement curve)
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PTQ Q1 2023
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