FR2277770A1 - Procede de cristallisation d'hydrates de soude caustique par refroidissement d'une lessive caustique - Google Patents
Procede de cristallisation d'hydrates de soude caustique par refroidissement d'une lessive caustiqueInfo
- Publication number
- FR2277770A1 FR2277770A1 FR7521498A FR7521498A FR2277770A1 FR 2277770 A1 FR2277770 A1 FR 2277770A1 FR 7521498 A FR7521498 A FR 7521498A FR 7521498 A FR7521498 A FR 7521498A FR 2277770 A1 FR2277770 A1 FR 2277770A1
- Authority
- FR
- France
- Prior art keywords
- heat exchanger
- crystallisation
- sodium hydroxide
- chromium
- coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052804 chromium Inorganic materials 0.000 title abstract 2
- 238000002425 crystallisation Methods 0.000 title abstract 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title 1
- 229910000570 Cupronickel Inorganic materials 0.000 title 1
- 239000011651 chromium Substances 0.000 title 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 title 1
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical class O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- 150000002739 metals Chemical class 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/28—Purification; Separation
- C01D1/30—Purification; Separation by crystallisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/087—Heat exchange elements made from metals or metal alloys from nickel or nickel alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Chemically Coating (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- ing And Chemical Polishing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE146359A BE817421A (fr) | 1974-07-09 | 1974-07-09 | Procede de cristallisation d'hydrates de soude caustique par refroidissement d'une lessive caustique. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2277770A1 true FR2277770A1 (fr) | 1976-02-06 |
| FR2277770B1 FR2277770B1 (cg-RX-API-DMAC7.html) | 1977-07-22 |
Family
ID=3842680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7521498A Granted FR2277770A1 (fr) | 1974-07-09 | 1975-07-07 | Procede de cristallisation d'hydrates de soude caustique par refroidissement d'une lessive caustique |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE817421A (cg-RX-API-DMAC7.html) |
| DE (1) | DE2526967A1 (cg-RX-API-DMAC7.html) |
| ES (1) | ES438692A1 (cg-RX-API-DMAC7.html) |
| FR (1) | FR2277770A1 (cg-RX-API-DMAC7.html) |
| IT (1) | IT1038597B (cg-RX-API-DMAC7.html) |
| NL (1) | NL7508191A (cg-RX-API-DMAC7.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2421359A1 (fr) * | 1978-03-31 | 1979-10-26 | Fives Cail Babcock | Procede de protection des surfaces d'une chaudiere de recuperation en contact avec un fluide chauffant, et chaudiere obtenue par l'application du procede |
| US6730653B1 (en) | 2000-06-01 | 2004-05-04 | Ecolab Inc. | Method for manufacturing a molded detergent composition |
| US7037886B2 (en) | 2000-06-01 | 2006-05-02 | Ecolab Inc. | Method for manufacturing a molded detergent composition |
-
1974
- 1974-07-09 BE BE146359A patent/BE817421A/xx unknown
-
1975
- 1975-05-30 IT IT23902/75A patent/IT1038597B/it active
- 1975-06-15 ES ES438692A patent/ES438692A1/es not_active Expired
- 1975-06-16 DE DE19752526967 patent/DE2526967A1/de not_active Withdrawn
- 1975-07-07 FR FR7521498A patent/FR2277770A1/fr active Granted
- 1975-07-09 NL NL7508191A patent/NL7508191A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2277770B1 (cg-RX-API-DMAC7.html) | 1977-07-22 |
| NL7508191A (nl) | 1976-01-13 |
| DE2526967A1 (de) | 1976-01-29 |
| IT1038597B (it) | 1979-11-30 |
| ES438692A1 (es) | 1977-04-01 |
| BE817421A (fr) | 1974-11-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |