NIORDC Tehran Refinery — Iran

NIORDC Tehran Refinery is a refinery in Iran. Its listed capacity is 250,000 BBL per day. Refineries heat, fractionate and chemically transform crude oil into fuels and petrochemical feedstocks through energy-intensive distillation and cracking — extremely demanding on steam generation and heat recovery. It is operated by National Iranian Oil Refining And Distribution Co. By capacity it ranks #5 among 9 oil refineries in Iran. It emits about 1,622,074 t CO₂e a year from Climate TRACE. That is 1.3% of the CO₂e from the 126 facilities in Iran that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 25% below the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1753621.

In context: how this facility compares

At 250,000 BBL per day, NIORDC Tehran Refinery is around the median refinery in Iran (250,000 BBL per day). Subsector: oil-and-gas-refining. As refinery, it requires high process heat (typically 200–600°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Refineries heat, fractionate and chemically transform crude oil into fuels and petrochemical feedstocks through energy-intensive distillation and cracking — extremely demanding on steam generation and heat recovery.

Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.

What 1,622,074 t CO₂e a year looks like

This facility's estimated annual CO₂e (Climate TRACE, modelled) in everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:

Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.

Capacity vs largest oil refineries in Iran

Listed capacity (BBL per day), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).

Operator

Operated by National Iranian Oil Refining And Distribution Co. All facilities by this operator →

Local climate

NIORDC Tehran Refinery sits in a hot desert climate zone (Köppen BWh), at 30.5°N in the northern hemisphere.

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

This site sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1246 W/m² to ambient — roughly 0.96× the loss at a 20 °C reference. Reference-surface calculation at a 150 °C surface from WorldClim climate normals (ASTM C680 / ISO 12241) — an indicative per-climate comparison, not a measurement of this site’s specific equipment. Open method dataset: DOI 10.5281/zenodo.20787408 (CC BY 4.0).

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby sites

The #5 largest of 9 oil refineries in Iran by listed capacity (Climate TRACE).

Nearby industrial sites

• Marun Petrochemical Co. (7th Olefin complex), Bandar Imam Khommeini,Khuzekstan · Petrochemical · 1,433,833 t CO₂
• Razi Petrochemical Complex · Chemical Plant · 1,652,424 t CO₂
• Amir Kabir Petrochemical Co. (6th Olefin complex), Bandar Imam Khommeini,Khuzekstan · Petrochemical · 730,164 t CO₂
• Bandar Imam Petrochemical Co. , Bandar Imam Khommeini,Khuzekstan · Petrochemical · 761,008 t CO₂
• IRN-Bandar-e-Mahshahr/Hendijan_methanol · Chemical Plant · 206,298 t CO₂
• Arvand Jahanara Steel Khouzestan plant · Steel Plant · 532,260 t CO₂

Location

Coordinates 30.47427, 49.08377. View on OpenStreetMap.

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