Acetylene to the consumers (1.2 bar(a))

What it is

Unallocated foreground LCI of Acetylene by partial oxidation of natural gas with NMP recovery (6.25 t/h acetylene, synthesis-gas co-product), case design, derived from the flowsheet by cheme assess lca.

Reference product

1 kilogram of Acetylene to the consumers (1.2 bar(a)) (gas, 1.2 bar(a), 40 degC, 99.5512 % C2H2 (mole))

Chemical

acetylene

CAS

74-86-2

Code

acetylene-1:acetylene-by-partial-oxidation-of-natural-gas-with-nmp-recovery-6.25-t-h-acetylene-synthesis-gas-co-product:product:ACETYLENE

Dataset

acetylene-by-partial-oxidation-of-natural-gas-with-nmp-recovery-6.25-t-h-acetylene-synthesis-gas-co-product version 0.1.0 · UUID 64c5d91c-69bf-546d-8cdf-206f38196f30

Activity UUID

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

Database

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

Process

Acetylene by partial oxidation of natural gas with NMP recovery (6.25 t/h, synthesis-gas co-product)

Geography

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

Time period

2026 · valid until 2031

Technology

Partial oxidation of natural gas with 99.5 % oxygen in a BASF-type burner (600 C preheat, about 1700 C flame), water quench, cooling column, wet ESP, closed quench-water circuit with vacuum degassing, three-stage compression to 11 bar(a), NMP absorption and stripping; 6.25 t/h acetylene, synthesis gas co-product · level current

Boundary

gate-to-gate foreground of the plant

Production volume

50,280,672 kg/a (product:ACETYLENE per hour x operation.hours_per_year (8000 h/a))

Classification

ISIC Rev.4 2011 (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

energy, 27 % of the dataset to this product (rule deviation, from study)

Preliminary choice of the concept study (D-013): no prices of acetylene and synthesis gas are sourced yet, so the library's price-ratio step cannot be evaluated; energy (LHV) is used as the physical relationship of two fuel-grade gases. To be revisited with sourced prices or a substitution credit for the synthesis gas; dataset.yaml stays unallocated.

Rights

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

Exchanges per 1 kilogram of Acetylene to the consumers (1.2 bar(a))

As exported: allocated and scaled to the reference product. Provenance: 9 assumed, 8 calculated. 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 Acetylene to the consumers (1.2 bar(a)), 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/acetylene-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 2.5

TeR 3 · GeR 3 · TiR 1 · P 3 · 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 acetylene-1:acetylene-by-partial-oxidation-of-natural-gas-with-nmp-recovery-6.25-t-h-acetylene-synthesis-gas-co-product:product:ACETYLENE
• cheme-as-code-atlas-preview-c3ab348-olca-jsonld.zip · openLCA JSON-LD (olca-schema) (2) · the whole database
  process 64c5d91c-69bf-546d-8cdf-206f38196f30 (processes/64c5d91c-69bf-546d-8cdf-206f38196f30.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 acetylene-1:acetylene-by-partial-oxidation-of-natural-gas-with-nmp-recovery-6.25-t-h-acetylene-synthesis-gas-co-product · 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", "acetylene-1:acetylene-by-partial-oxidation-of-natural-gas-with-nmp-recovery-6.25-t-h-acetylene-synthesis-gas-co-product:product:ACETYLENE"))

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

Acetylene to the consumers (1.2 bar(a)), from Acetylene by partial oxidation of natural gas with NMP recovery (6.25 t/h, synthesis-gas co-product) (dataset acetylene-by-partial-oxidation-of-natural-gas-with-nmp-recovery-6.25-t-h-acetylene-synthesis-gas-co-product 0.1.0), ChemE-as-Code Process Atlas LCI database preview-c3ab348, activity acetylene-1:acetylene-by-partial-oxidation-of-natural-gas-with-nmp-recovery-6.25-t-h-acetylene-synthesis-gas-co-product:product:ACETYLENE. 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}
}