WO2003011760A1 - Method for the precipitation of poorly-soluble materials such as barium sulphate for example and precipitation capsule - Google Patents
Method for the precipitation of poorly-soluble materials such as barium sulphate for example and precipitation capsule Download PDFInfo
- Publication number
- WO2003011760A1 WO2003011760A1 PCT/EP2002/007713 EP0207713W WO03011760A1 WO 2003011760 A1 WO2003011760 A1 WO 2003011760A1 EP 0207713 W EP0207713 W EP 0207713W WO 03011760 A1 WO03011760 A1 WO 03011760A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- precipitation
- capsule
- capsules
- inflow
- poorly
- Prior art date
Links
Classifications
-
- 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
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/462—Sulfates of Sr or Ba
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2445—Stationary reactors without moving elements inside placed in parallel
Definitions
- the invention relates to a process for the precipitation of poorly soluble substances, such as. B. barium sulfate, in which the desired sparingly soluble substance is formed by combining two individual components in a precipitation capsule by reacting the individual components with one another.
- poorly soluble substances such as. B. barium sulfate
- barium sulfate (BaS0 4 ) by precipitation from barium sulfide (BaS) or barium chloride (BaCI 2 ) with sodium sulfate solution (Na 2 S0 4 ) or sulfuric acid (H 2 S0 4 ) or barium hydroxide solution (Ba (OH) 2 ) with sulfuric acid (H 2 S0 4 ).
- the precipitation ie the bringing together of the precipitation solutions as individual components in a specific precipitation apparatus, must take place in a specific manner.
- the residence time in the felling machine is of crucial importance as one of the main parameters.
- Other important precipitation parameters are the concentration and the temperature of the precipitant solutions.
- the task was to simplify the felling process and thus the associated felling apparatus by redesigning, if possible as a closed apparatus without a stirrer and built-in parts, so that the required grain sizes (median value d 50 ) in the range from 0.1 to 2 ⁇ m are reproducibly permanent high BaS0 4 throughput (t / h) can be produced.
- the capsules each have a lockable inflow for each individual component with free outflow into the static mixer, which opens into a common drain line.
- a capsule according to the invention for use in the method just described is characterized in that each capsule has an inflow for a single component in the axial direction of the capsule and an inflow for the other individual component tangentially or at an acute angle to the longitudinal axis of the capsule.
- the capsules are preferably made of plastic.
- the falling capsules (falling volume ⁇ 1 to 100 l) are closed, round, cylindrical falling pieces with a conical inlet and outlet. Another inlet for the second precipitation component is arranged on the side.
- the two precipitation components are fed separately via line systems that are connected to pumps.
- the volume flows of barium- and sulfate-containing solution partly reach the respective capsule axially and tangentially via liquid distributors, whereby barium sulfate is precipitated spontaneously, which, under low pressure, is precipitated into the tube mixer (static mixer) and from there via a common drain line to the so-called precipitation tank (which in this case serves as a storage container).
- the dwell time in the respective precipitating device depends on the size of the precipitate (volume of precipitation) of the capsule and the rate of precipitation (volume flow (m 3 / h)) of the precipitant solutions.
- any desired grain size (median value d 5 o in the range of 0.1 to 2 ⁇ m) can be reliably set with otherwise unchanged precipitation parameters (essentially concentration and temperature).
- the differently high rate of precipitation in the respective capsule at the same time ensures a spontaneous intensive mixing of the precipitation components, so that, from a reaction-kinetic point of view, there are no local concentration differences during precipitation which have an undesirable effect on the grain spectrum / median d 50 .
- the decisive criterion is that the reaction component only comes into contact with each other shortly before entering the respective capsule - in the zone of highest turbulence - and the precipitate suspension thus produced is further homogenized in the downstream tube mixer, so that practically before it enters the actual precipitation container the precipitation is complete.
- the capsules used according to the invention are e.g. B. also suitable for the production of barium carbonate, barium chromate and zinc sulfide.
- FIGS. 1 and 2 are described below.
- Fig. 1 shows several precipitators (capsules) in the composite system for the precipitation of poorly soluble substances, such as. B. barium sulfate.
- the reference numeral 1 denotes precipitation capsules, each of which has a different precipitation volume, depending on the desired fineness of the product.
- Each capsule 1 has an inflow A for the first individual component that can be shut off with a valve (labeled 2) and an inflow B for the second individual component that can be shut off with a valve (labeled 3).
- Each precipitation capsule 1 has a static mixer with a free inflow and outflow 5, the respective processes passing through a common line 6 into the so-called precipitation container 7, which in this case is the storage container for the further process cut.
- the precipitation capsules 1 are preferably made of plastic.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/485,227 US20040202608A1 (en) | 2001-07-31 | 2002-06-11 | Method for the precipitation of poorly-soluble materials such as barium sulphate for example and precipitation capsule |
EP02764666A EP1414749A1 (en) | 2001-07-31 | 2002-07-11 | Method for the precipitation of poorly-soluble materials such as barium sulphate for example and precipitation capsule |
JP2003516958A JP2005505399A (en) | 2001-07-31 | 2002-07-11 | Sedimentation methods and sedimentation capsules for sparingly soluble substances such as barium sulfate |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10137325 | 2001-07-31 | ||
DE10137325.2 | 2001-07-31 | ||
DE10229189A DE10229189A1 (en) | 2001-07-31 | 2002-06-28 | Continuous precipitation of hardly soluble substance, e.g. barium sulfate, involves using parallel precipitation capsules of different volume with homogenization in static mixer |
DE10229189.6 | 2002-06-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003011760A1 true WO2003011760A1 (en) | 2003-02-13 |
Family
ID=26009828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/007713 WO2003011760A1 (en) | 2001-07-31 | 2002-07-11 | Method for the precipitation of poorly-soluble materials such as barium sulphate for example and precipitation capsule |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1414749A1 (en) |
JP (1) | JP2005505399A (en) |
WO (1) | WO2003011760A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010084007A1 (en) | 2009-01-23 | 2010-07-29 | Sachtleben Chemie Gmbh | Polymer compositions comprising inorganic fillers and process for preparation thereof |
CN103962038A (en) * | 2014-04-01 | 2014-08-06 | 云南浩鑫铝箔有限公司 | Device for preparing doubling oil or rolling oil for rolling of aluminum foil |
WO2022237758A1 (en) * | 2021-05-10 | 2022-11-17 | 清华大学 | Continuous preparation method and system for nano-barium sulfate |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2125342A (en) * | 1935-11-04 | 1938-08-02 | Du Pont | Process of making pigment barium sulphate from barium chloride |
DE894840C (en) * | 1943-09-20 | 1953-10-29 | Jean Charles Seailles | Method and device for the precipitation of a precipitate which is easy to separate from the mother liquor |
US2685499A (en) * | 1950-12-21 | 1954-08-03 | Eastman Kodak Co | Method of proeparing blanc fixe |
EP0687651A1 (en) * | 1994-06-13 | 1995-12-20 | Sakai Chemical Industry Co., Ltd., | Plate barium sulfate and process for producing the same |
JP2917080B2 (en) * | 1992-08-25 | 1999-07-12 | 花王株式会社 | Method and apparatus for continuous production of poorly water-soluble salts |
WO2000076919A1 (en) * | 1999-06-09 | 2000-12-21 | Sachtleben Chemie Gmbh | Method for producing barium sulfate, barium sulfate and the utilization thereof |
-
2002
- 2002-07-11 EP EP02764666A patent/EP1414749A1/en not_active Withdrawn
- 2002-07-11 JP JP2003516958A patent/JP2005505399A/en not_active Withdrawn
- 2002-07-11 WO PCT/EP2002/007713 patent/WO2003011760A1/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2125342A (en) * | 1935-11-04 | 1938-08-02 | Du Pont | Process of making pigment barium sulphate from barium chloride |
DE894840C (en) * | 1943-09-20 | 1953-10-29 | Jean Charles Seailles | Method and device for the precipitation of a precipitate which is easy to separate from the mother liquor |
US2685499A (en) * | 1950-12-21 | 1954-08-03 | Eastman Kodak Co | Method of proeparing blanc fixe |
JP2917080B2 (en) * | 1992-08-25 | 1999-07-12 | 花王株式会社 | Method and apparatus for continuous production of poorly water-soluble salts |
EP0687651A1 (en) * | 1994-06-13 | 1995-12-20 | Sakai Chemical Industry Co., Ltd., | Plate barium sulfate and process for producing the same |
WO2000076919A1 (en) * | 1999-06-09 | 2000-12-21 | Sachtleben Chemie Gmbh | Method for producing barium sulfate, barium sulfate and the utilization thereof |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 199933, Derwent World Patents Index; Class J04, AN 1994-123453, XP002219187 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010084007A1 (en) | 2009-01-23 | 2010-07-29 | Sachtleben Chemie Gmbh | Polymer compositions comprising inorganic fillers and process for preparation thereof |
DE102009006014A1 (en) | 2009-01-23 | 2010-08-05 | Sachtleben Chemie Gmbh | Polymer compositions with inorganic fillers and process for their preparation |
CN103962038A (en) * | 2014-04-01 | 2014-08-06 | 云南浩鑫铝箔有限公司 | Device for preparing doubling oil or rolling oil for rolling of aluminum foil |
WO2022237758A1 (en) * | 2021-05-10 | 2022-11-17 | 清华大学 | Continuous preparation method and system for nano-barium sulfate |
Also Published As
Publication number | Publication date |
---|---|
JP2005505399A (en) | 2005-02-24 |
EP1414749A1 (en) | 2004-05-06 |
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