GB1020594A - Chemical processing apparatus useful for crystallization processes - Google Patents
Chemical processing apparatus useful for crystallization processesInfo
- Publication number
- GB1020594A GB1020594A GB1312/63A GB131263A GB1020594A GB 1020594 A GB1020594 A GB 1020594A GB 1312/63 A GB1312/63 A GB 1312/63A GB 131263 A GB131263 A GB 131263A GB 1020594 A GB1020594 A GB 1020594A
- Authority
- GB
- United Kingdom
- Prior art keywords
- evaporator
- outlet
- slurry
- zone
- mother liquor
- 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.)
- Expired
Links
- 238000002425 crystallisation Methods 0.000 title abstract 2
- 230000008025 crystallization Effects 0.000 title abstract 2
- 238000012993 chemical processing Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000002002 slurry Substances 0.000 abstract 6
- 239000012452 mother liquor Substances 0.000 abstract 4
- 239000013078 crystal Substances 0.000 abstract 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 230000008719 thickening Effects 0.000 abstract 2
- 229910021538 borax Inorganic materials 0.000 abstract 1
- 238000005352 clarification Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000001640 fractional crystallisation Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- 235000010339 sodium tetraborate Nutrition 0.000 abstract 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0018—Evaporation of components of the mixture to be separated
- B01D9/0022—Evaporation of components of the mixture to be separated by reducing pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
1,020,594. Large capacity evaporators. CHICAGO BRIDGE & IRON CO. Jan. 11, 1963 [April 11, 1962], No. 1312/63. Heading BIB. A large evaporator 10, e.g. of a capacity of 50,000-2,000,000 gallons, for crystallizing solutions by adiabatic evaporation under reduced pressure, comprises a hemispherical top portion 11 welded to a bottom conical portion 12, the top portion being provided with a vapour outlet, and the bottom portion being provided with a feed inlet 13 just below the surface of the liquid which is maintained at the point of maximum cross-section. The feed inlet is preferably aligned to deliver the feed in a non-radial direction. Bottom portion 12 is also provided with a slurry outlet 18, a drain outlet, and a recirculation system for the solution in the evaporator, comprising outlet 14, pump 15, heat exchanger 15, and pipe 17. Solution entering evaporator 10 via inlet 13 undergoes flash evaporation and becomes cooled. Any crystals that are formed fall to the bottom of the evaporator and are removed as a slurry from outlet 18. The cooled mother liquor is withdrawn via outlet 14 and is recirculated to mix with the inlet feed, being heated in heat exchanger 16 during the recirculation. The vapour formed in evaporator 10 passes via the entrainment separator 19 into the heat exchanger 22 where it heats the mother liquor being recirculated in a second evaporator 20 maintained at a pressure below the pressure in evaporator 10 by the action of steam jet ejector 30. The construction and operation of evaporator 20 are similar to that of evaporator 10. An internal baffle 120, Fig. 4 (not shown), may be provided inside the bottom section 112 of the evaporator to divide it into crystallization zone 115 and thickening zone 119 the latter having an exposed surface area of 5-50% of the total exposed surface area. In operation, the crystal slurry formed in zone 115 is withdrawn from outlet 117 and is passed via line 118 into zone 119. Thickening of the slurry occurs in zone 119, the thickened slurry being removed via outlet 123 and the clarified mother liquor being removed via overflow 122. Also described is an evaporator wherein the internal baffle is provided with an aperture at its lowest point so that clarification of the mother liquor is achieved without external recirculation of the crystal slurry. These evaporators can be used in multiple effect for separating mixtures of sodium borate and sodium sulphate by fractional crystallization (see Division C1).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18673362A | 1962-04-11 | 1962-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1020594A true GB1020594A (en) | 1966-02-23 |
Family
ID=22686076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1312/63A Expired GB1020594A (en) | 1962-04-11 | 1963-01-11 | Chemical processing apparatus useful for crystallization processes |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1268589B (en) |
| GB (1) | GB1020594A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435482A (en) * | 2015-11-27 | 2016-03-30 | 天津大学 | Multi-stage vacuum adiabatic flash continuous crystallization method and equipment |
| CN113813913A (en) * | 2021-10-20 | 2021-12-21 | 李世星 | Quinones natural product extraction equipment convenient to take out recrystallization product |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH144559A (en) * | 1929-03-21 | 1931-01-15 | Escher Wyss Maschf Ag | Process for the production of salt of a certain grain size. |
| DE1004141B (en) * | 1954-03-22 | 1957-03-14 | Metallgesellschaft Ag | Multi-stage evaporation of salt-separating solutions |
| DE1036814B (en) * | 1955-09-14 | 1958-08-21 | Metallgesellschaft Ag | Device for the extraction of large and even crystals |
-
1963
- 1963-01-11 GB GB1312/63A patent/GB1020594A/en not_active Expired
- 1963-01-17 DE DEP1268A patent/DE1268589B/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435482A (en) * | 2015-11-27 | 2016-03-30 | 天津大学 | Multi-stage vacuum adiabatic flash continuous crystallization method and equipment |
| CN113813913A (en) * | 2021-10-20 | 2021-12-21 | 李世星 | Quinones natural product extraction equipment convenient to take out recrystallization product |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1268589B (en) | 1968-05-22 |
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