Prilled urea to storage

Activity Urea by CO2 stripping, total recycle, prilling (2000 t/d, concept), GLO: the inventory of 1 kilogram of its reference product, attributional, cut-off.

Calculation maturity: not assessed Design maturity: Concept (research)Not independently reviewedurea-1:urea-by-co2-stripping-total-recycle-prilling-2000-t-d:product:UREAPreliminaryReport a problem with this dataset

Research outputAn inventory from a research design at the design maturity its process states, not verified plant data: check its calculation maturity and review status before use. Background activities are referenced by name only; no background data is included. All caveats

What it is

Unallocated foreground LCI of Urea by CO2 stripping, total recycle, prilling (2000 t/d), case design, derived from the flowsheet by cheme assess lca.

Reference product: 1 kilogram of Prilled urea to storage (1.01325 bar(a), 70 degC, 98.5392 % UREA (mole))
Chemical: urea
CAS: 57-13-6
Code: urea-1:urea-by-co2-stripping-total-recycle-prilling-2000-t-d:product:UREA
Dataset: urea-by-co2-stripping-total-recycle-prilling-2000-t-d version 0.1.0 · UUID 1d9eb18c-3fd5-5dda-9be0-9b2657deb887
Activity UUID: not available (the library assigns none; use the code)
Database: cheme-as-code-atlas-preview-c3ab348 (version preview-c3ab348)
Process: Urea by CO2 stripping, total recycle, prilling (2000 t/d, concept)
Geography: GLO · background inputs with a site rule link at the user's site location (default DE)
Time period: 2026 · valid until 2031
Technology: CO2 stripping total-recycle urea synthesis (140 bar, N/C 2.8), LP recirculation, two-stage vacuum evaporation, forced-draft prilling with wet scrubbing, process condensate desorption/hydrolysis; electric CO2 compressor; 2000 t/d · level current
Boundary: gate-to-gate foreground of the plant
Production volume: 666,666,400 kg/a (product:UREA 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: none, 100 % of the dataset to this product (rule single-output, from study)
one product: nothing to allocate
Rights: CC-BY-4.0: the ChemE-as-Code process library's own concept design (LICENSE-DATA)

Exchanges per 1 kilogram of Prilled urea to storage

As exported: allocated and scaled to the reference product. Provenance: 8 assumed. Pedigree scores (1 best, 5 worst): reliability, completeness, temporal correlation, geographical correlation, further technological correlation.

Preliminary2 exchanges are not yet linked to a background dataset. They count no burden, so the inventory is incomplete: do not read a result from it as complete.

Input	Amount	Unit	Provenance	Pedigree	Linked to
Liquid ammonia from the ammonia plant feed:NH3 S1, liquid ammonia from the ammonia plant (D-004) From stream S1	0.5653	kilogram	assumed	4 4 1 3 3	market for ammonia, anhydrous, liquid (ammonia, anhydrous, liquid, RER) in your background (default ecoinvent-3.11-cutoff)
CO2 from the ammonia plant CO2 removal feed:CO2 S3, CO2 feed gas (98.5 mol%) at 160 kPa(a) from the ammonia plant (D-004) From stream S3	0.7381	kilogram	assumed	4 4 1 3 3	unlinked unlinked, no technosphere mapping: no mapping (chemical 'carbon-dioxide'); add it to lci/mappings.yaml technosphere or to the process's lca/mappings.yaml exchanges
Electric power feed:POWER Q1-Q4: CO2 compressor, HP ammonia and carbamate pumps, prilling fan (D-010). KNOWN UNDERESTIMATE: 96 kWh/t against 110 kWh/t in BREF LVIC-AAF Table 8.6 (about 13 % low); vacuum, condensate, scrubber and cooling-water pumps are not estimated yet (O-4) electricity From streams Q1, Q2, Q3, Q4	0.09613	kilowatt hour	assumed	4 4 1 3 3	market for electricity, medium voltage (electricity, medium voltage, DE, site location) in your background (default ecoinvent-3.11-cutoff)
MP steam 2400 kPa(a) feed:MPS Q5-Q7: HP stripper, 2nd evaporator, hydrolyser; 0.8 t/t total from BREF LVIC-AAF Table 8.5 (D-010) steam, MP, 221.75 degC, 24 bar(a) From streams Q5, Q6, Q7	0.408	kilowatt hour	assumed	4 4 1 3 3	Atlas: heat from steam, per kWh (Atlas unit proxy) (heat from steam, by energy, GLO)
Cooling water return product:CW Q11-Q13: K-101 intercoolers, LP carbamate condenser, evaporator condensers (D-010). KNOWN UNDERESTIMATE: 45 m3/t at 10 K against 60 m3/t in BREF LVIC-AAF Table 8.4 (about 25 % low); product cooling, HP scrubber tempered water, vacuum condensers and lube oil are not estimated yet. Not in any exchange either: the heat of R-101/E-102 beyond the 35.2 MW LP steam raised (about 10-24 MW, D-010) and the C-401 heating from C-402 (warnings boundary-utility-unassigned R101, C401); it may become an LP steam export or more cooling duty (O-4) cold, 25 degC From streams Q11, Q12, Q13	0.5243	kilowatt hour	assumed	4 4 1 3 3	Atlas (plant): cooling water service, per kWh heat rejected (Atlas screening proxy) (heat rejected to cooling water, GLO) compatible: grade the input names cooling-water only; cooling-water (Heat rejected to cooling water, 25/35 degC) is taken; unit kilowatt hour; carrier cold, 25 degC from cold, 25 degC; system model cutoff (one database); allocation mass (single-output); boundary plant gate of a site utility: no utility market yet (docs/markets.md)

Elementary flows

Flow	Direction	Compartment	Amount	Unit	Provenance	Pedigree
Carbon dioxide, fossil 349b29d1-3e58-4c66-98b9-9d1a076efd2e From streams S31, S54	emission	air	9.044e-5	kilogram	assumed	4 4 1 3 3
Ammonia 87883a4e-1e3e-4c9d-90c0-f1bea36f8014 From streams S31, S54	emission	air	2.694e-4	kilogram	assumed	4 4 1 3 3
UREA to the environment emission:UREA unlinked unlinked, no biosphere mapping: emission of UREA (fossil) has no biosphere3 flow identity and is not in lci/mappings.yaml biosphere From streams S31, S54	emission	not linked	2.327e-4	kilogram	assumed	4 4 1 3 3

The streams are the plant's own flows: an amount here is allocated and per 1 kilogram of Prilled urea to storage, 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/urea-1/lca/dataset.yaml in library version c3ab348.

Used by

No other activity of this database links to it.

How good it is

Review

Not reviewed: no LCI review record yet

Data quality

DQR 2.33 · PEF-style DQR 2.75

TeR 3 · GeR 3 · 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

Not available: no benchmarked KPI for this dataset.

How to use it

Downloads

cheme-as-code-atlas-preview-c3ab348.xlsx · bw2io ExcelImporter workbook (bw2io 0.9 Excel layout) · the whole database
code urea-1:urea-by-co2-stripping-total-recycle-prilling-2000-t-d:product:UREA
cheme-as-code-atlas-preview-c3ab348-olca-jsonld.zip · openLCA JSON-LD (olca-schema) (2) · the whole database
process 1d9eb18c-3fd5-5dda-9be0-9b2657deb887 (processes/1d9eb18c-3fd5-5dda-9be0-9b2657deb887.json)
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 urea-1:urea-by-co2-stripping-total-recycle-prilling-2000-t-d:product:UREA
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", "urea-1:urea-by-co2-stripping-total-recycle-prilling-2000-t-d:product:UREA"))

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

Prilled urea to storage, from Urea by CO2 stripping, total recycle, prilling (2000 t/d, concept) (dataset urea-by-co2-stripping-total-recycle-prilling-2000-t-d 0.1.0), ChemE-as-Code Process Atlas LCI database preview-c3ab348, activity urea-1:urea-by-co2-stripping-total-recycle-prilling-2000-t-d:product:UREA. 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)

For the data, cite the Process Atlas paper; for the platform that builds and checks it, the ChemE-as-Code paper.

Schweidtmann, A. M. & Weber, J. M. (2026, in preparation). Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title).

BibTeX

@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}
}

Schweidtmann, A. M. (2026, in preparation). ChemE-as-Code: An Open-Source Platform for AI-Accelerated Chemical Process Engineering (working title).

BibTeX

@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}
}