BR112022017868A2 - Processo hidrotérmico para destruição de oxalato - Google Patents
Processo hidrotérmico para destruição de oxalatoInfo
- Publication number
- BR112022017868A2 BR112022017868A2 BR112022017868A BR112022017868A BR112022017868A2 BR 112022017868 A2 BR112022017868 A2 BR 112022017868A2 BR 112022017868 A BR112022017868 A BR 112022017868A BR 112022017868 A BR112022017868 A BR 112022017868A BR 112022017868 A2 BR112022017868 A2 BR 112022017868A2
- Authority
- BR
- Brazil
- Prior art keywords
- range
- reactor
- hydrothermal process
- stream
- mpa
- Prior art date
Links
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 title abstract 3
- 230000006378 damage Effects 0.000 title abstract 3
- 238000001027 hydrothermal synthesis Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000007670 refining Methods 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 230000029087 digestion Effects 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
- C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
- C01F7/473—Removal of organic compounds, e.g. sodium oxalate
- C01F7/476—Removal of organic compounds, e.g. sodium oxalate by oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Removal Of Specific Substances (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fertilizers (AREA)
Abstract
PROCESSO HIDROTÉRMICO PARA DESTRUIÇÃO DE OXALATO. Um processo hidrotérmico é fornecido para tratar um fluxo de resíduos de Na2C2O4 de um processo de refino de alumina. Isto consegue a destruição do oxalato e um retorno do filtrado para a fase de digestão (4) do processo de refino. O fluxo de alimentação é bombeado sob alta pressão através de um reator tubular (27) no qual há pré-aquecimento e aquecimento no reator para levar o fluxo até uma temperatura na faixa de 290 ºC a 330 ºC. As bombas fornecem uma pressão na faixa de 90 Bar a 160 Bar (9 MPa a 16 MPa) e um tempo de retenção na faixa de 8 minutos a 30 minutos. A jusante do reator há separação (32) do líquido tratado para fornecer um gás e um líquido contendo carbonato de sódio, tratamento (33) do gás para fornecer uma descarga segura para a atmosfera e tratamento (40) do líquido separado para fornecer um fluxo tratado.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20161666 | 2020-03-06 | ||
| PCT/EP2021/054915 WO2021175731A1 (en) | 2020-03-06 | 2021-02-26 | A hydrothermal process for oxalate destruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR112022017868A2 true BR112022017868A2 (pt) | 2022-11-01 |
Family
ID=69780111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112022017868A BR112022017868A2 (pt) | 2020-03-06 | 2021-02-26 | Processo hidrotérmico para destruição de oxalato |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4114799B1 (pt) |
| AU (1) | AU2021230084A1 (pt) |
| BR (1) | BR112022017868A2 (pt) |
| WO (1) | WO2021175731A1 (pt) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008229997A1 (en) * | 2007-10-18 | 2009-05-07 | Alcoa Of Australia Limited | Method of Hydrothermal Treatment of Organic Contaminants of Alkaline Process Solutions |
-
2021
- 2021-02-26 EP EP21707293.3A patent/EP4114799B1/en active Active
- 2021-02-26 BR BR112022017868A patent/BR112022017868A2/pt not_active Application Discontinuation
- 2021-02-26 WO PCT/EP2021/054915 patent/WO2021175731A1/en unknown
- 2021-02-26 AU AU2021230084A patent/AU2021230084A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4114799C0 (en) | 2024-01-10 |
| EP4114799B1 (en) | 2024-01-10 |
| WO2021175731A1 (en) | 2021-09-10 |
| EP4114799A1 (en) | 2023-01-11 |
| AU2021230084A1 (en) | 2022-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B11A | Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing | ||
| B11Y | Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette] |