Hydroxylammonium sulfate solution 25.4 wt% to storage
Activity Hydroxylammonium sulfate by catalytic NO hydrogenation (30 kt/a NH2OH, 25 wt% solution), GLO: the inventory of 1 kilogram of its reference product, attributional, cut-off.
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 Hydroxylammonium sulfate solution by NO hydrogenation (30 kt/a NH2OH), case design, derived from the flowsheet by cheme assess lca.
- Reference product
- 1 kilogram of Hydroxylammonium sulfate solution 25.4 wt% to storage (1.8 bar(a), 40 degC, 71.1773 % H2O (mass))
- Chemical
- hydroxylammonium-sulfate
- CAS
- 10039-54-0
- Code
- hydroxylamine-1:hydroxylammonium-sulfate-solution-by-no-hydrogenation-30-kt-a-nh2oh:product:PROD
- Dataset
- hydroxylammonium-sulfate-solution-by-no-hydrogenation-30-kt-a-nh2oh version 0.1.0 · UUID 316c5545-6c2a-5c77-89ab-41e7836b3406
- Activity UUID
- not available (the library assigns none; use the code)
- Database
- cheme-as-code-atlas-preview-c3ab348 (version preview-c3ab348)
- Process
- Hydroxylammonium sulfate by catalytic NO hydrogenation (30 kt/a NH2OH, 25 wt% solution)
- Geography
- GLO · background inputs with a site rule link at the user's site location (default DE)
- Time period
- 2026 · valid until 2031
- Technology
- NH3 oxidation with O2 and steam on Pt/Rh (about 130 kPa(a)), O2 removal by hydrogenation, condensation, NO hydrogenation in about 20 wt% H2SO4 on suspended Pt/graphite in a stirred-tank cascade (313 K, 200 kPa(a)) with off-gas recycle and purge to a thermal oxidiser; 30 kt/a NH2OH · level current
- Boundary
- gate-to-gate foreground of the plant
- Production volume
- 293,466,720 kg/a (product:PROD 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
- shares, 100 % of the dataset to this product (rule deviation, from study)The library hierarchy allocates exported steam by energy or exergy. Neither is available: no property package covers the salt solution (D-006), so its exergy cannot be calculated, and energy allocation would load the steam with the burdens of a non-fuel product. Shares 1/0 until the exergy of both products is available (D-011).
- Rights
- CC-BY-4.0: the ChemE-as-Code process library's own concept design (LICENSE-DATA)
Exchanges per 1 kilogram of Hydroxylammonium sulfate solution 25.4 wt% to storage
As exported: allocated and scaled to the reference product. Provenance: 13 assumed, 3 calculated. 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 (boundary feed; e.g. from ammonia-1) feed:NH3 stream S01, 2296 kg/h = 0.612 kg/kg NH2OH (D-003, D-005) From stream S01 | 0.06259 | kilogram | assumed | 4 4 1 3 3 | market for ammonia, anhydrous, liquid (ammonia, anhydrous, liquid, RER) in your background (default ecoinvent-3.11-cutoff) |
| Gaseous oxygen 99.5 mol% (boundary feed; e.g. from asu-1) feed:GOX stream S03, 5768 kg/h = 1.54 kg/kg NH2OH (D-003) From stream S03 | 0.1572 | kilogram | assumed | 4 4 1 3 3 | Atlas (pinned): Cryogenic air separation unit (500 t/d GOX) (Oxygen, gaseous, >= 99.5 mol%, 30 barg, GLO) compatible: grade the input names oxygen only; oxygen/gox-30barg-99.5 (Oxygen, gaseous, >= 99.5 mol%, 30 barg) is taken; unit kilogram; system model cutoff (one database); allocation exergy (physical-exergy); boundary plant gate (pinned): no distribution or losses; the consumer's dataset counts its delivery |
| Hydrogen 99.9 mol% (boundary feed; e.g. from hydrogen-1) feed:H2 streams S08 and S19, 490 kg/h = 0.131 kg/kg NH2OH (D-003, D-005, D-007) | 0.01336 | kilogram | assumed | 4 4 1 3 3 | market for hydrogen, gaseous, low pressure (hydrogen, gaseous, low pressure, RER) in your background (default ecoinvent-3.11-cutoff) |
| Sulfuric acid 98.5 wt% (boundary feed; e.g. from sulfuric-acid-1) feed:ACID stream S14, 6651 kg/h = 1.77 kg/kg NH2OH (D-004) From stream S14 | 0.1813 | kilogram | assumed | 4 4 1 3 3 | Atlas (pinned): Sulfuric acid from sulfur burning, double contact / double absorption (1000 t/d, 98.5 wt%) (Sulfuric acid 98.5 wt% to storage, GLO) compatible: grade the input names no chemical only; sulfuric-acid (Sulfuric acid 98.5 wt% to storage) is taken; unit kilogram; system model cutoff (one database); allocation shares (deviation); boundary plant gate (pinned): no distribution or losses; the consumer's dataset counts its delivery |
| Demineralised water feed:DEMIN stream S15, 10 127 kg/h = 2.70 kg/kg NH2OH (D-004) From stream S15 | 0.2761 | kilogram | assumed | 4 4 1 3 3 | market for water, deionised (water, deionised, RoW) in your background (default ecoinvent-3.11-cutoff) |
| LP steam 500 kPa(a), direct use (burner dilution steam) feed:STEAMD stream S04, 11 694 kg/h = 3.12 kg/kg NH2OH (US 3,110,563 Example a ratio, D-003) From stream S04 | 0.3188 | kilogram | assumed | 4 4 1 3 3 | Atlas: steam, saturated, 11 bar(a), per kg, as heat from steam (Atlas unit proxy) (steam, saturated, 11 bar(a), GLO) |
| Electric power feed:POWER streams Q04, Q06, Q08, Q09, Q10: NO gas compressor, acid pump, cascade agitators, recycle blower, oxidiser fan, 355 kW = 0.095 kWh/kg NH2OH (D-008) electricity | 0.009683 | 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) |
| LP steam 500 kPa(a), indirect (ammonia vaporiser) feed:LPS stream Q01, 744 kW = 0.198 kWh/kg NH2OH (D-008) steam, LP, 151.85 degC, 5 bar(a) From stream Q01 | 0.02027 | 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 streams Q03, Q05, Q07: nitrous-gas condenser, acid cooler, cascade, 24 342 kW = 6.49 kWh/kg NH2OH (D-008) cold, 25 degC | 0.6636 | 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) |
| Pt/Rh gauze metal lost from the ammonia burner consumable:pt-rh-gauze-loss ASSUMED 0.5 g/t NH3 gross loss (the per-NH3 equivalent of the 0.15 g/t HNO3 that nitric-acid-1 assumes) x 18 370 t NH3/a; Pt/Rh 90/10, 3-10 % Rh in US 3,110,563; D-011, O-3 | 3.135e-8 | kilogram | assumed | 4 4 1 3 3 | Atlas: platinum-rhodium gauze 90/10, per kg (Atlas screening proxy) (platinum-rhodium gauze, GLO) |
| Platinum lost from the suspended Pt/graphite hydrogenation catalyst consumable:pt-catalyst-loss ASSUMED 5 %/a of a 23 kg Pt inventory (40 g catalyst per l at 0.5 wt% Pt, US 4,895,711 Example 1, x 117 m3 liquid, D-008); D-011, O-3 | 4.089e-9 | kilogram | assumed | 4 4 1 3 3 | market for platinum (platinum, GLO) in your background (default ecoinvent-3.11-cutoff) |
| Ag-Mn oxygen-hydrogenation catalyst (R-102) replaced consumable:o2-removal-catalyst ASSUMED: 2.4 m3 bed (23 500 Nm3/h nitrous gas at a gas hourly space velocity of 10 000 1/h), 1000 kg/m3, replaced every 3 years; catalyst named in EP 0 945 401; D-011, O-3 | 2.726e-6 | kilogram | assumed | 4 4 1 3 3 | unlinked unlinked, no technosphere mapping: no mapping (no chemical slug or factor id); add it to lci/mappings.yaml technosphere or to the process's lca/mappings.yaml exchanges |
| Disposal: Ag-Mn oxygen-hydrogenation catalyst (R-102) replaced (spent silver catalyst to precious-metal recovery) disposal:consumable.o2-removal-catalyst ASSUMED: the whole replaced charge leaves as spent catalyst | 2.726e-6 | kilogram | assumed | 4 4 1 3 3 | unlinked unlinked, no technosphere mapping: no mapping (no chemical slug or factor id); add it to lci/mappings.yaml technosphere or to the process's lca/mappings.yaml exchanges |
Elementary flows
| Flow | Direction | Compartment | Amount | Unit | Provenance | Pedigree |
|---|---|---|---|---|---|---|
| Hydrogen no biosphere3 UUID: linked by name and compartment From stream S30 | emission | air | 0 | kilogram | calculated | 3 4 1 3 3 |
| Dinitrogen monoxide 20185046-64bb-4c09-a8e7-e8a9e144ca98 From stream S30 | emission | air | 0.002651 | kilogram | calculated | 3 4 1 3 3 |
| Nitric oxide 17f7e776-7934-54af-8c3c-ed0247cb697b From stream S30 | emission | air | 0.003446 | kilogram | calculated | 3 4 1 3 3 |
The streams are the plant's own flows: an amount here is allocated and per 1 kilogram of Hydroxylammonium sulfate solution 25.4 wt% 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/hydroxylamine-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 2.5TeR 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: not-assessable
- lci-element-balance: not-assessable
- lci-mass-balance: closed
- element balance not assessable: no composition for consumable:pt-rh-gauze-loss (no composition), consumable:pt-catalyst-loss (no composition), consumable:o2-removal-catalyst (no composition), disposal:consumable.o2-removal-catalyst (no composition)
- carbon balance not assessable: no composition for consumable:pt-rh-gauze-loss (no composition), consumable:pt-catalyst-loss (no composition), consumable:o2-removal-catalyst (no composition), disposal:consumable.o2-removal-catalyst (no composition)
- 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 databasecode hydroxylamine-1:hydroxylammonium-sulfate-solution-by-no-hydrogenation-30-kt-a-nh2oh:product:PROD
- cheme-as-code-atlas-preview-c3ab348-olca-jsonld.zip · openLCA JSON-LD (olca-schema) (2) · the whole databaseprocess 316c5545-6c2a-5c77-89ab-41e7836b3406 (processes/316c5545-6c2a-5c77-89ab-41e7836b3406.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 databasecode hydroxylamine-1:hydroxylammonium-sulfate-solution-by-no-hydrogenation-30-kt-a-nh2oh · 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", "hydroxylamine-1:hydroxylammonium-sulfate-solution-by-no-hydrogenation-30-kt-a-nh2oh:product:PROD"))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
Hydroxylammonium sulfate solution 25.4 wt% to storage, from Hydroxylammonium sulfate by catalytic NO hydrogenation (30 kt/a NH2OH, 25 wt% solution) (dataset hydroxylammonium-sulfate-solution-by-no-hydrogenation-30-kt-a-nh2oh 0.1.0), ChemE-as-Code Process Atlas LCI database preview-c3ab348, activity hydroxylamine-1:hydroxylammonium-sulfate-solution-by-no-hydrogenation-30-kt-a-nh2oh:product:PROD. 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}
}