WO2001003816A1 - Introduction d'un liquide dans une cuve brassee - Google Patents
Introduction d'un liquide dans une cuve brassee Download PDFInfo
- Publication number
- WO2001003816A1 WO2001003816A1 PCT/EP2000/006617 EP0006617W WO0103816A1 WO 2001003816 A1 WO2001003816 A1 WO 2001003816A1 EP 0006617 W EP0006617 W EP 0006617W WO 0103816 A1 WO0103816 A1 WO 0103816A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- stirred vessel
- introducing
- product
- injection
- Prior art date
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 9
- 239000006227 byproduct Substances 0.000 description 8
- 239000000376 reactant Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- VEUUMBGHMNQHGO-UHFFFAOYSA-N ethyl chloroacetate Chemical compound CCOC(=O)CCl VEUUMBGHMNQHGO-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Inorganic materials [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7179—Feed mechanisms characterised by the means for feeding the components to the mixer using sprayers, nozzles or jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/43—Mixing liquids with liquids; Emulsifying using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/822—Combinations of dissimilar mixers with moving and non-moving stirring devices in the same receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
Definitions
- the present invention relates to introducing a first liquid into a stirred vessel containing a second liquid.
- USA patent specification No. 3 847 375 describes a method for introducing a first liquid and a second liquid into a liquid-filled space.
- the first liquid is introduced as a high velocity jet through a first nozzle into an impulse exchange chamber that is arranged in the liquid-filled space, and the second liquid is introduced at a lower velocity through a second nozzle in the proximity of the first nozzle.
- the impulse exchange chamber has a diameter that is of the order of magnitude of the nozzle diameter, and consequently the volume into which the first and second liquids are introduced is relatively small.
- liquids are mixed in a stirred vessel, wherein an impeller is used to stir the mixture, is known. Stirring is done to homogenize the mixture.
- An example in which liquids need to be mixed is when they contain reactive species that form a product when brought in contact with each other. Often in commercial reactors not just the desired product is formed but also by-products. This may be because two reactants may undergo different chemical reactions with each other, resulting in the formation of more products than just the desired one. A similar situation exists when the reactor contains more reactants than the one which has to react with the injected reactant. When these other reactants undergo a reaction with the injected one, a by-product is formed.
- the two examples mentioned belong to the class of reaction systems that is called parallel competitive reactions. Another class is called consecutive competitive reactions; an example of this class is the reaction of the desired product with the injected reactant to an unwanted by-product.
- the method of introducing a first liquid in a stirred vessel containing a second liquid comprising injecting the first liquid into the stirred vessel, wherein the ratio of injection velocity over impeller tip speed is greater than 2.
- the injection velocity is at least 3 m/s.
- reaction equations are: NaOH + HCl - NaCl + H 2 0 (the acid-base neutralization), and NaOH + CH 2 C1C00C 2 H5 -> CH 2 ClCOONa + C 2 H 5 OH.
- the reactions were carried out in a 10 1 (litre) vessel, having an inner diameter of 0.24 m (metre) provided with an impeller having an outer diameter of 0.08 m.
- the nozzle diameter was varied between 0.5 and 3.0 mm (millimetre) .
- the vessel was filled with a second liquid in the form of an aqueous solution of HCl having a concentration of 0.05 mol/1.
- a first liquid in the form of a mixture of ethylchloroacetate and sodium hydroxide in water, each of these reactants having a concentration of 0.12 mol/1 in this first liquid.
- the injection was maintained at a volumetric flow rate of 0.5 1/minute for a period of one minute.
- the injection velocity was varied by varying the nozzle diameter.
- a sample taken from the vessel after the injection was completed was analysed with a gas chro atograph .
- the by-product yield is the ratio of the amount of ethanol (C 2 H5 ⁇ H) produced to the amount of sodium hydroxide added.
- the results of the experiments are summarized in the below Table.
- V t is the impeller tip speed in m/s (metre/second)
- V j _ is the injection velocity in m/s
- R is the ratio V ⁇ /V- ) -
- P ⁇ p is the total power consumed in W (Watt)
- P ⁇ is the power consumed by the injection through the nozzle (W)
- BPY is the by-product yield.
- the liquids consist of miscible liquids
- the method of the invention can as well be applied to multi-phase mixtures where the reactants have to be transported across phase boundaries.
- multi-phase mixtures are gas-in-liquid dispersions or liquid-in-liquid dispersions of immiscible liquids, with or without suspended solid particles.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU61586/00A AU6158600A (en) | 1999-07-14 | 2000-07-11 | Introducing a liquid into a stirred vessel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99305579.7 | 1999-07-14 | ||
EP99305579 | 1999-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001003816A1 true WO2001003816A1 (fr) | 2001-01-18 |
Family
ID=8241515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/006617 WO2001003816A1 (fr) | 1999-07-14 | 2000-07-11 | Introduction d'un liquide dans une cuve brassee |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU6158600A (fr) |
WO (1) | WO2001003816A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8931948B2 (en) | 2008-10-01 | 2015-01-13 | Bp Corporation North America Inc. | Process and apparatus for mixing a fluid within a vessel |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3847375A (en) * | 1972-10-12 | 1974-11-12 | Basf Ag | Method and apparatus for mixing liquids |
EP0209095A2 (fr) * | 1985-07-17 | 1987-01-21 | Waagner-Biro Aktiengesellschaft | Procédé et dispositif pour la gazéification |
JPH07204412A (ja) * | 1994-01-17 | 1995-08-08 | Fuji Electric Co Ltd | 薬注率自動決定装置と自動決定方法 |
JPH10267710A (ja) * | 1997-03-28 | 1998-10-09 | Zexel Corp | 噴射量の算出方法 |
-
2000
- 2000-07-11 AU AU61586/00A patent/AU6158600A/en not_active Abandoned
- 2000-07-11 WO PCT/EP2000/006617 patent/WO2001003816A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3847375A (en) * | 1972-10-12 | 1974-11-12 | Basf Ag | Method and apparatus for mixing liquids |
EP0209095A2 (fr) * | 1985-07-17 | 1987-01-21 | Waagner-Biro Aktiengesellschaft | Procédé et dispositif pour la gazéification |
JPH07204412A (ja) * | 1994-01-17 | 1995-08-08 | Fuji Electric Co Ltd | 薬注率自動決定装置と自動決定方法 |
JPH10267710A (ja) * | 1997-03-28 | 1998-10-09 | Zexel Corp | 噴射量の算出方法 |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Week 9540, Derwent World Patents Index; AN 1995-307277, XP002120108 * |
DATABASE WPI Week 9851, Derwent World Patents Index; AN 1998-598194, XP002120109 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8931948B2 (en) | 2008-10-01 | 2015-01-13 | Bp Corporation North America Inc. | Process and apparatus for mixing a fluid within a vessel |
Also Published As
Publication number | Publication date |
---|---|
AU6158600A (en) | 2001-01-30 |
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