Liquid ammonia product (refrigerated, to the battery limit)

What it is

Unallocated foreground LCI of Ammonia from natural gas, 1500 t/d (steam reforming, air-fed secondary reformer, Haber-Bosch loop), case design, derived from the flowsheet by cheme assess lca.

Reference product

1 kilogram of Liquid ammonia product (refrigerated, to the battery limit) (1.1 bar(a), -33 degC, 99.9812 % NH3 (mole))

Chemical

ammonia

CAS

7664-41-7

Code

ammonia-1:ammonia-from-natural-gas-1500-t-d-steam-reforming-air-fed-secondary-reformer-haber-bosch-loop:product:NH3

Dataset

ammonia-from-natural-gas-1500-t-d-steam-reforming-air-fed-secondary-reformer-haber-bosch-loop version 0.1.0 · UUID 13401756-15c9-5082-831d-0551355dbc05

Activity UUID

not available (the library assigns none; use the code)

Database

cheme-as-code-atlas-preview-c3ab348 (version preview-c3ab348)

Process

Ammonia from natural gas (1500 t/d, steam reforming with air-fed secondary reformer, Haber-Bosch loop)

Geography

NL · background inputs with a site rule link at the user's site location (default DE)

Time period

2026 · valid until 2031

Technology

steam methane reforming with air-blown secondary reformer, HT/LT shift, aMDEA CO2 removal (CO2 vented), methanation, 150 bar Haber-Bosch loop with purge recovery; electric drives, MP steam export · level current

Boundary

gate-to-gate foreground of the plant

Production volume

499,774,400 kg/a (product:NH3 per hour x operation.hours_per_year (8000 h/a))

Classification

ISIC Rev.4 2012 (taxonomy/families.yaml (ISIC Rev.4) of the process's families)

System model

attributional, cut-off (docs/system-model.md, methodology 1.1.0)

Allocation

exergy, 94 % of the dataset to this product (rule deviation, from study)

D-021: no co-product price is recorded, so the WBCSD price ratio is unknown, and mass allocation would charge 0.88 kg of steam per kg NH3 with 47 % of the gas, feed and emissions of an ammonia plant. Exergy is the physical relationship between the products.

Rights

CC-BY-4.0: the ChemE-as-Code process library's own concept design (LICENSE-DATA)

Exchanges per 1 kilogram of Liquid ammonia product (refrigerated, to the battery limit)

As exported: allocated and scaled to the reference product. Provenance: 2 given, 10 assumed. Pedigree scores (1 best, 5 worst): reliability, completeness, temporal correlation, geographical correlation, further technological correlation.

Elementary flows

The streams are the plant's own flows: an amount here is allocated and per 1 kilogram of Liquid ammonia product (refrigerated, to the battery limit), so it differs from the stream's flow, and it can sum several streams.

Where these numbers come from: each exchange names its source above; the dataset is processes/ammonia-1/lca/dataset.yaml in library version c3ab348.

Used by

• Hydrazine hydrate (64 wt% N2H4) hydrazine-1:hydrazine-hydrate-by-the-peroxide-pcuk-methyl-ethyl-ketazine-process:product:HH
• Solid sodium cyanide (98 wt%) to packing sodium-cyanide-1:solid-sodium-cyanide-from-andrussow-hcn-6.25-t-h-nacn:product:NACN
• Sodium nitrite, dried, 99.0 wt-% (to bagging and storage) sodium-nitrite-1:sodium-nitrite-from-ammonia-oxidation-and-soda-absorption-2.5-t-h-nano2-nano3-co-product:product:NANO2
• Sodium nitrate, dried (co-product) sodium-nitrite-1:sodium-nitrite-from-ammonia-oxidation-and-soda-absorption-2.5-t-h-nano2-nano3-co-product:product:NANO3

How good it is

Review

Not reviewed: no LCI review record yet

Data quality

DQR 1.67 · PEF-style DQR 2.25

TeR 3 · GeR 1 · TiR 1 · P 4 · C 4 · weakest TeR · primary data 0 %

Mass and carbon closure

Assessed (lca/manifest.json balance, tolerance 5 %: design maturity concept (sourced screening))

• lci-carbon-origin: closed
• lci-element-balance: closed
• lci-mass-balance: closed

Change report

Not available: this build has no change report against an earlier release.

KPI benchmark positions

How to use it

Downloads

• cheme-as-code-atlas-preview-c3ab348.xlsx · bw2io ExcelImporter workbook (bw2io 0.9 Excel layout) · the whole database
  code ammonia-1:ammonia-from-natural-gas-1500-t-d-steam-reforming-air-fed-secondary-reformer-haber-bosch-loop:product:NH3
• cheme-as-code-atlas-preview-c3ab348-olca-jsonld.zip · openLCA JSON-LD (olca-schema) (2) · the whole database
  process 13401756-15c9-5082-831d-0551355dbc05 (processes/13401756-15c9-5082-831d-0551355dbc05.json) · the dataset's unallocated multi-output process; this product's allocation factor is in it
• cheme-as-code-atlas-preview-c3ab348-multifunctional.json · Brightway 2.5 multifunctional database (JSON, for the multifunctional package) (cheme-as-code/lci-multifunctional/v1) · the whole database
  code ammonia-1:ammonia-from-natural-gas-1500-t-d-steam-reforming-air-fed-secondary-reformer-haber-bosch-loop · the dataset unallocated, with all its products; this product is its desired_code
• cheme_as_code_lci-0.1.0-py3-none-any.whl · the installer

A file with this activity alone is not available: each file above is the whole database, and the line under it says how to find this activity there.

import bw2data as bd
from cheme_as_code_lci import install

bd.projects.set_current("my-project")   # holds your licensed background + biosphere3
install("cheme-as-code-atlas-preview-c3ab348.xlsx", background="ecoinvent-3.11-cutoff", location="DE")
activity = bd.get_activity(("cheme-as-code-atlas-preview-c3ab348", "ammonia-1:ammonia-from-natural-gas-1500-t-d-steam-reforming-air-fed-secondary-reformer-haber-bosch-loop:product:NH3"))

While any exchange of the database has no mapping, install() writes nothing and only lists the unlinked exchanges. So the last line finds no activity until the gaps are mapped: the download section gives the ways to use the database now.

How to cite

Liquid ammonia product (refrigerated, to the battery limit), from Ammonia from natural gas (1500 t/d, steam reforming with air-fed secondary reformer, Haber-Bosch loop) (dataset ammonia-from-natural-gas-1500-t-d-steam-reforming-air-fed-secondary-reformer-haber-bosch-loop 0.1.0), ChemE-as-Code Process Atlas LCI database preview-c3ab348, activity ammonia-1:ammonia-from-natural-gas-1500-t-d-steam-reforming-air-fed-secondary-reformer-haber-bosch-loop:product:NH3. Cite the Process Atlas paper (in preparation, 2026), by Artur M. Schweidtmann and Jana M. Weber, and the ChemE-as-Code Process Atlas LCI database version preview-c3ab348.

DOI: none yet (the Process Atlas paper is in preparation)

@unpublished{schweidtmann_process_atlas,
  author = {Schweidtmann, Artur M. and Weber, Jana M.},
  title = {{Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title)}},
  year = {2026},
  url = {https://atlas.cheme-as-code.org},
  note = {in preparation}
}

@unpublished{schweidtmann_cheme_as_code,
  author = {Schweidtmann, Artur M.},
  title = {{ChemE-as-Code: An Open-Source Platform for AI-Accelerated Chemical Process Engineering (working title)}},
  year = {2026},
  url = {https://cheme-as-code.org},
  note = {in preparation}
}