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JapanChemicals and materials2021 – ongoing

Nissan Chemical

Hybrid AI model of an ammonia-plant steam reformer

Nissan Chemical built a more accurate steam-reformer model 2 times as fast with hybrid AI

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Problem

Nissan Chemical needed a simulation that reproduced its ammonia plant's behavior. Its conventional reactor model struggled with furnace temperature distributions.

Approach

The company used Aspen Hybrid Models within Aspen Plus to combine physical process knowledge with neural-network calibration. Engineers cleaned plant data before training the model. The resulting model reproduced operating data more accurately than the conventional approach.

Results

Twice as Fastmodel creation compared with the conventional reformer approach, according to AspenTechVendor case study[1]

Takeaway

The demonstrated benefit was faster model development. The cited operating-cost reduction was potential savings from future optimization.

Categories

Innovation type
Process innovation
Evidence
Vendor case study

Sources

Source summaries

[1]AspenTech2021

AspenTech reported that Nissan Chemical created a more accurate reformer model 2 times as fast. The customer presented results in May 2021; operating-cost savings were described as potential.

Full details are in the original sources.

Added 1 Nov 2026 · Updated 1 Nov 2026
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