Borrowing it
Nothing to install: this file belongs to equinor/neqsim. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/equinor/neqsim/master/.github/skills/neqsim-sulfur-recovery/SKILL.mdgit clone --depth 1 https://github.com/equinor/neqsimWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/equinor/neqsim/neqsim-sulfur-recovery)<a href="https://agentmods.dev/skills/equinor/neqsim/neqsim-sulfur-recovery"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-sulfur-recovery/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/equinor/neqsim/neqsim-sulfur-recovery"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-sulfur-recovery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00102 | $0.02607 |
| Opus 5.5 | $0.00041 | $0.01043 |
| Sonnet 5.5 | $0.00020 | $0.00521 |
| Haiku 4.5 | $0.00010 | $0.00261 |
Grade A, and why
neqsim-sulfur-recovery scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 13d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sulfur Recovery with NeqSim
When to use this
- Build an integrated Claus sulfur-recovery process from an acid-gas stream.
- Compare straight-through, split-flow, and oxygen-enriched configurations.
- Select one to three catalytic stages, add condensers, tail-gas treatment, or incineration.
- Inspect elemental sulfur product, sulfur balance, H2S/SO2 ratio, oxygen demand, and convergence.
- Study furnace, converter, sulfur-condensing, or sub-dew-point equipment independently.
- Calibrate reduced kinetic settings against vendor or plant data before using results for rating.
This is an integrated process-screening model. It is not a licensor guarantee, detailed furnace CFD,
catalyst-vendor rating, emissions permit determination, or mechanical design package.
ClausReactionFurnace defaults to a reduced kinetic mechanism. Its EQUILIBRIUM option uses the
NeqSim Gibbs reactor as a chemistry kernel; that does not make the complete train a validated
equilibrium Claus design.
Class map
| Class | Package | What it does | Verified key setters/getters |
|---|---|---|---|
SulfurRecoveryProcessBuilder |
neqsim.process.equipment.reactor.sulfurrecovery |
Configures integrated train topology | catalyticStages(int), tailGasTreatment(boolean), incinerator(boolean), configuration(Configuration), build() |
SulfurRecoveryUnit |
same | Runs the integrated SRU, air control, and optional tail-gas recycle | setConfiguration(Configuration), setNumberOfCatalyticStages(int), getPerformance(), getCombinedSulfurProductStream() |
SulfurRecoveryPerformance |
same | Immutable run KPIs | getSulfurRecoveryPercent(), getOverallSulfurRecoveryPercent(), getSulfurBalanceRelativeError(), convergence flags |
ClausReactionFurnace |
same | Furnace chemistry and energy calculation | setModelMode(ModelMode), setEnergyMode(EnergyMode), setResidenceTime(double), getFurnaceTemperature() |
ClausCatalyticConverter |
same | Finite-rate Claus reaction and COS/CS2 hydrolysis | setCatalystType(CatalystType), setGasHourlySpaceVelocity(double), conversion getters |
SulfurCondenser |
same | Cools gas and removes elemental sulfur | setOutletTemperature(double,String), getCondensedSulfur(String), getHeatDuty(String) |
ReactiveWasteHeatBoiler |
same | Reacting waste-heat cooling and steam estimate | setOutletTemperature(double,String), getHeatDuty(String), getSteamProduction(String) |
SubDewPointSulfurReactor |
same | Adsorption/regeneration sulfur-bed model | setBedMode(BedMode), setSulfurCapacity(double,String), getStoredSulfur(String) |
TailGasTreatmentUnit |
same | Hydrogenation/hydrolysis, H2S absorption, acid-gas recycle | setReactorTemperature(double,String), getAcidGasRecycleStream(), getHydrogenationConversion() |
ThermalIncinerator |
same | Oxidizes sulfur compounds in tail gas | setTemperature(double,String), setResidenceTime(double), getSo2Emission(String) |
AirDemandController |
same | Calculates/feedback-trims oxidant demand | calculateOxygenDemand(SystemInterface), setTargetH2SToSO2Ratio(double) |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 13d ago First seen · 173 lines · 102 tokens per session scan A 982f34250035
neqsim-sulfur-recovery is a skill published in the GitHub repository equinor/neqsim (156 stars, last pushed today), licensed Apache-2.0. It adds 102 tokens to every session and 2,607 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-05.
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