WO1996016727A1 - Device for mixing particulate material and liquid - Google Patents

Device for mixing particulate material and liquid Download PDF

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Publication number
WO1996016727A1
WO1996016727A1 PCT/SE1995/001401 SE9501401W WO9616727A1 WO 1996016727 A1 WO1996016727 A1 WO 1996016727A1 SE 9501401 W SE9501401 W SE 9501401W WO 9616727 A1 WO9616727 A1 WO 9616727A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
particulate material
discs
set forth
liquid
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.)
Ceased
Application number
PCT/SE1995/001401
Other languages
French (fr)
Inventor
Stefan Åhman
Nils Bringfors
Lars-Erik Johansson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Technology FLB AB
Original Assignee
ABB Flaekt AB
Flaekt AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Flaekt AB, Flaekt AB filed Critical ABB Flaekt AB
Priority to DK95939453T priority Critical patent/DK0794830T3/en
Priority to SI9520142A priority patent/SI9520142B/en
Priority to JP51716896A priority patent/JP3649290B2/en
Priority to SK660-97A priority patent/SK282040B6/en
Priority to CA002205059A priority patent/CA2205059C/en
Priority to UA97063093A priority patent/UA32603C2/en
Priority to HU9800495A priority patent/HU221802B1/en
Priority to FI972232A priority patent/FI972232A0/en
Priority to AT95939453T priority patent/ATE212875T1/en
Priority to MD97-0234A priority patent/MD1228G2/en
Priority to CZ19971573A priority patent/CZ287812B6/en
Priority to RO97-00950A priority patent/RO115424B1/en
Priority to AU41262/96A priority patent/AU699500B2/en
Priority to US08/849,113 priority patent/US5887973A/en
Priority to EE9700119A priority patent/EE9700119A/en
Priority to PL95320348A priority patent/PL178051B1/en
Priority to EP95939453A priority patent/EP0794830B1/en
Priority to DE69525370T priority patent/DE69525370T2/en
Priority to RU97110654A priority patent/RU2137535C1/en
Priority to BR9509828A priority patent/BR9509828A/en
Publication of WO1996016727A1 publication Critical patent/WO1996016727A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B01F23/50—Mixing liquids with solids
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/54—Mixing liquids with solids wetting solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/73—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with rotary discs
    • 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
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/402—Mixers using gas or liquid agitation, e.g. with air supply tubes comprising supplementary stirring elements
    • 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
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/406—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/565—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries
    • B01F23/566—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries by introducing liquids in a fluidised bed

Definitions

  • This invention concerns a device for mixing particu ⁇ late material and liquid, for instance for mixing water and absorbent material which is reactive with gaseous pollutants in flue gases and which, during cleaning of the flue gases, is to be introduced into these gases in moistened state in order to convert the gaseous pollu ⁇ tants to separable dust, said device comprising a con ⁇ tainer, an inlet for the introduction of particulate material into the container, a spraying means for spray- ing liquid over the particulate material in the con ⁇ tainer, an agitator arranged in the container, and an outlet for discharging material mixed with liquid from the container.
  • gaseous pollutants such as sulphur dioxide
  • the gases are con ⁇ ducted through a contact reactor in which particulate absorbent material reactive with the gaseous pollutants is, in moistened state, introduced into the flue gases in order to convert the gaseous pollutants to separable dust.
  • the flue gases are then conducted through a dust separator, in which dust is separated from the flue gases and from which the thus-cleaned flue gases are drawn off.
  • Part of the dust separated in the dust separator is con ⁇ ducted to a mixer, where it is mixed and moistened with water, whereupon it is recycled as absorbent material by being introduced into the flue gases along with an addi ⁇ tion of fresh absorbent.
  • fresh absorbent use is gene ⁇ rally made of slaked lime (calcium hydroxide).
  • the agitator consists of one or more shafts, on which are mounted agitating means in the form of helical flanges, blades, paddles or the like.
  • these prior-art devices are not always capable of producing a homogeneous mixture in which the water is evenly distributed in the particulate material. As a result, moist lumps of material may form, especially when the particulate material contains a large proportion of hydrophobic particles, as is the case with fly ash.
  • the absorbent material is supplied to the flue gases in the form of a homogeneous mixture in which the moisture is evenly dis- tributed.
  • a special object of this invention is, therefore, to provide a device which is especially adapted to be used for mixing absorbent material and water in the flue-gas- cleaning method described above and which then results in a homogeneous mixture.
  • a more general object of the invention is to pro ⁇ vide a device which not only results in a homogeneous mixture of particulate material and liquid, but which also has a lower energy consumption than equivalent prior-art devices.
  • a device which is of the type mentioned by way of introduction and which is characterised in that there is provided a fluidisation means adapted to fluid- ise the particulate material in the container during the mixing operation.
  • the container has an upper bottom and a lower bottom, which between them define a chamber and of which the upper bottom is air- permeable, and there is provided an air-supply means adapted to supply air to the chamber with a view to fluidising the particulate material in the container.
  • the agitator consists of at least one rotary shaft which extends along the container and on which a plurality of discs, through the centres of which extends the shaft, are mounted in inclined state at an axial distance from one another.
  • these discs have an elliptic shape and are, about their minor axes, so inclined in relation to the shaft as to have a circular axial projection.
  • the discs are inclined at an angle of 45-80°, preferably about 60".
  • FIG. 1 is a side view which schematically illu ⁇ strates a device according to the invention, but in which certain parts of the device have been broken away;
  • Fig. 2 is a top view of the device in Fig. 1; and
  • Fig. 3 is a cross-section taken along line III-III in Fig. 2.
  • the mixing device illustrated comprises a contai- ner 1, which essentially is in the shape of an elongate, parallelepidal box.
  • the container 1 has vertical side walls 2 and 3, a vertical rear end wall 4, a vertical front end wall 5, a horizontal upper bottom 6, a hori ⁇ zontal lower bottom 7 and a horizontal top or lid 8.
  • the container 1 has an inlet 9, through which particulate material is supplied from above (the arrow PI in Fig. 1).
  • the container 1 has an outlet 10, through which is discharged a homo ⁇ geneous mixture of particulate material and water (the arrows P2 in Figs 2 and 3).
  • the front end of the container 1 is inserted in a vertical flue-gas channel 11 through which flue gases containing gaseous pollutants, such as sulphur dioxide, are conducted upwards (the arrows P3 in Figs 1 and 3) in order to be cleaned in known fashion.
  • the outlet 10 is an overflow formed as a result of the side walls 2 and 3 being lower in the container part inserted in the channel 11 than in the container part located outside the channel 11.
  • the top 8 extends from the inlet 9 to the outlet 10, i.e. up to the flue-gas channel 11.
  • the two bottoms 6 and 7 define a cham ⁇ ber 12 which, in the lateral direction, is delimited by the two side walls 2 and 3 and, in the longitudinal direction, is delimited by the two end walls 4 and 5.
  • An air- supply means which here consists of two air inlets 13 and 14, is arranged to supply air to the chamber 12 (the arrows P4 in Figs 1 and 2), so as to fluidise the parti ⁇ culate material in the container 1.
  • Two juxtaposed, horizontal shafts 17, 17' extend along the entire container 1 and are rotatably mounted in the two end walls 4 and 5 with the aid of bearings 18, 18' and 19, 19', respectively.
  • a motor 20 is arranged to rotate the shafts 17, 17' via a transmission unit 21.
  • Each shaft 17, 17' supports a plurality of elliptic discs 22, 22' which, about their minor axes, are mounted in inclined state on the shaft 17, 17' at an axial dis ⁇ tance from one another.
  • the shafts 17, 17' extend through the centres of the respective discs 22, 22'.
  • each disc 22, 22' is so inclined in relation to the shaft 17, 17' that the angle ⁇ between the major axis of the disc and the shaft 17, 17' is about 60° (see Fig. 1). This angle ⁇ may vary between 45° and 80°.
  • the discs 22, 22' are so inclined in relation to the respective shafts 17, 17' and have such an elliptic shape as to have a circular axial projection, as illustrated in Fig. 3.
  • the discs 22, 22' are so positioned on the respective shafts 17, 17' that the discs of the one shaft project into the spaces between the discs of the other shaft.
  • Each of the discs 22, 22* arranged and designed in the manner indicated above performs, during the rotation of the shafts 17, 17', a throwing movement conducive to thorough mixing of particulate material.
  • the flue-gas channel 11 illustrated forms part of a system for cleaning flue gases containing gaseous pollu ⁇ tants, such as sulphur dioxide.
  • the flue gases (P3) are passed through the flue-gas channel 11, in which particu ⁇ late absorbent material reactive with the gaseous pollu ⁇ tants is, in moistened state, introduced into the flue gases in order to convert the gaseous pollutants to sepa ⁇ rable dust.
  • the flue gases are then passed through a dust separator (not shown), in which dust is separated from the flue gases and from which the thus-cleaned flue gases are discharged into the surrounding atmosphere. Part of the dust separated in the dust separator is, along with an addition of fresh absorbent, e.g.
  • particulate material (PI) supplied as particulate material (PI) to the inlet 9 of the container 1, so as to be, in the container, mixed with water sprayed over the particu ⁇ late material in the container through the nozzles 16.
  • the particulate material in the container 1 is maintained in fluidised state by means of air (P4) which, via the air inlets 13 and 14, the chamber 12 and the fluidisation cloth 6, is introduced into the container.
  • air (P4) which, via the air inlets 13 and 14, the chamber 12 and the fluidisation cloth 6, is introduced into the container.
  • the chamber 12 is divided into a front part chamber 12a, which is situated in the flue-gas channel 11, and a rear part chamber 12b.
  • the air inlet 13 opens into the rear part chamber 12b, while the air inlet 14 opens into the front part chamber 12a.
  • the container 1 was filled with particulate material.
  • the container 1 had a volume of 0.3 m 3 .
  • the shafts 17, 17' were rotated at a speed of 200 rpm.
  • the flow rate of par ⁇ ticulate material passing through the container was 8 m 3 /h, and the flow rate of the water was 240 1/h.
  • the power consumption including the power consumption of the supply of fluidisation air (0.08 m 3 /s), was found to be 2.2 kW. With no fluidisation but otherwise under the same conditions, the power consumption was 3 kW.
  • the front end of the container 1 is inserted in a channel 11.
  • the mixing device may also be used for dis ⁇ charging a homogeneously moistened, homogeneous mixture of particulate material into two separate channels, in which case the front end of the container 1 extends into these two channels in such a manner that the mixture is discharged into the one channel via the overflow 10 in the side wall 2 and discharged into the other channel via the overflow 10 in the side wall 3.
  • the relationship between the flows of material to the two channels may be set by choosing suitable levels for the overflow 10 at the respective sides, i.e. by a suitable choice of height for the respective side walls 2, 3 in the container part inserted in the channels.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Unwinding Webs (AREA)
  • Package Specialized In Special Use (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Nozzles (AREA)
  • Paints Or Removers (AREA)

Abstract

A device for mixing particulate material and liquid comprises a container (1), an inlet (9) for the introduction of particulate material (P1) into the container (1), a spraying means (15, 16) for spraying liquid over the particulate material in the container, an agitator (17, 17', 22, 22') arranged in the container (1), and an outlet (10) for discharging material mixed with liquid from the container (1). A fluidisation means (6, 12, 13, 14) is adapted to fluidise the particulate material in the container (1) during the mixing operation.

Description

DEVICE FOR MIXING PARTICULATE MATERIAL AND LIQUID
This invention concerns a device for mixing particu¬ late material and liquid, for instance for mixing water and absorbent material which is reactive with gaseous pollutants in flue gases and which, during cleaning of the flue gases, is to be introduced into these gases in moistened state in order to convert the gaseous pollu¬ tants to separable dust, said device comprising a con¬ tainer, an inlet for the introduction of particulate material into the container, a spraying means for spray- ing liquid over the particulate material in the con¬ tainer, an agitator arranged in the container, and an outlet for discharging material mixed with liquid from the container.
When gaseous pollutants, such as sulphur dioxide, are to be separated from flue gases, the gases are con¬ ducted through a contact reactor in which particulate absorbent material reactive with the gaseous pollutants is, in moistened state, introduced into the flue gases in order to convert the gaseous pollutants to separable dust. The flue gases are then conducted through a dust separator, in which dust is separated from the flue gases and from which the thus-cleaned flue gases are drawn off. Part of the dust separated in the dust separator is con¬ ducted to a mixer, where it is mixed and moistened with water, whereupon it is recycled as absorbent material by being introduced into the flue gases along with an addi¬ tion of fresh absorbent. As fresh absorbent, use is gene¬ rally made of slaked lime (calcium hydroxide).
Devices of the type mentioned by way of introduction are used as mixers in order to perform the above mixing operation involving absorbent material and water. In these prior-art devices, the agitator consists of one or more shafts, on which are mounted agitating means in the form of helical flanges, blades, paddles or the like. However, these prior-art devices are not always capable of producing a homogeneous mixture in which the water is evenly distributed in the particulate material. As a result, moist lumps of material may form, especially when the particulate material contains a large proportion of hydrophobic particles, as is the case with fly ash.
In order that the flue gases should be efficiently cleaned, it is, of course, essential that the absorbent material is supplied to the flue gases in the form of a homogeneous mixture in which the moisture is evenly dis- tributed.
A special object of this invention is, therefore, to provide a device which is especially adapted to be used for mixing absorbent material and water in the flue-gas- cleaning method described above and which then results in a homogeneous mixture.
A more general object of the invention is to pro¬ vide a device which not only results in a homogeneous mixture of particulate material and liquid, but which also has a lower energy consumption than equivalent prior-art devices.
According to the invention, these objects are achieved by a device which is of the type mentioned by way of introduction and which is characterised in that there is provided a fluidisation means adapted to fluid- ise the particulate material in the container during the mixing operation.
In a preferred embodiment, the container has an upper bottom and a lower bottom, which between them define a chamber and of which the upper bottom is air- permeable, and there is provided an air-supply means adapted to supply air to the chamber with a view to fluidising the particulate material in the container.
Preferably, the agitator consists of at least one rotary shaft which extends along the container and on which a plurality of discs, through the centres of which extends the shaft, are mounted in inclined state at an axial distance from one another. Conveniently, these discs have an elliptic shape and are, about their minor axes, so inclined in relation to the shaft as to have a circular axial projection. In a preferred embodiment, the discs are inclined at an angle of 45-80°, preferably about 60".
The invention will now be described in more detail with reference to the accompanying drawing, in which Fig. 1 is a side view which schematically illu¬ strates a device according to the invention, but in which certain parts of the device have been broken away; Fig. 2 is a top view of the device in Fig. 1; and Fig. 3 is a cross-section taken along line III-III in Fig. 2.
The mixing device illustrated comprises a contai- ner 1, which essentially is in the shape of an elongate, parallelepidal box. The container 1 has vertical side walls 2 and 3, a vertical rear end wall 4, a vertical front end wall 5, a horizontal upper bottom 6, a hori¬ zontal lower bottom 7 and a horizontal top or lid 8. At the rear end, the container 1 has an inlet 9, through which particulate material is supplied from above (the arrow PI in Fig. 1). At the front end, the container 1 has an outlet 10, through which is discharged a homo¬ geneous mixture of particulate material and water (the arrows P2 in Figs 2 and 3).
In the example shown the drawing, the front end of the container 1 is inserted in a vertical flue-gas channel 11 through which flue gases containing gaseous pollutants, such as sulphur dioxide, are conducted upwards (the arrows P3 in Figs 1 and 3) in order to be cleaned in known fashion. In this application, the outlet 10 is an overflow formed as a result of the side walls 2 and 3 being lower in the container part inserted in the channel 11 than in the container part located outside the channel 11. As appears from Figs 1 and 2, the top 8 extends from the inlet 9 to the outlet 10, i.e. up to the flue-gas channel 11. Between them, the two bottoms 6 and 7 define a cham¬ ber 12 which, in the lateral direction, is delimited by the two side walls 2 and 3 and, in the longitudinal direction, is delimited by the two end walls 4 and 5. The ceiling of the chamber 12, i.e. the upper bottom 6, con¬ sists of an air-permeable fluidisation cloth of polyester mounted in stretched state in the container 1. An air- supply means, which here consists of two air inlets 13 and 14, is arranged to supply air to the chamber 12 (the arrows P4 in Figs 1 and 2), so as to fluidise the parti¬ culate material in the container 1.
A water-supply line 15, which is disposed above the container 1, is connected to a plurality of nozzles 16 arranged in the upper part of the container 1 to spray water in finely-divided form over the particulate mate¬ rial in the container. The nozzles 16, of which but a few are shown in the drawing, are arranged in two parallel rows extending along the container 1.
Two juxtaposed, horizontal shafts 17, 17' extend along the entire container 1 and are rotatably mounted in the two end walls 4 and 5 with the aid of bearings 18, 18' and 19, 19', respectively. A motor 20 is arranged to rotate the shafts 17, 17' via a transmission unit 21.
Each shaft 17, 17' supports a plurality of elliptic discs 22, 22' which, about their minor axes, are mounted in inclined state on the shaft 17, 17' at an axial dis¬ tance from one another. The shafts 17, 17' extend through the centres of the respective discs 22, 22'. In the exam¬ ple illustrated, each disc 22, 22' is so inclined in relation to the shaft 17, 17' that the angle α between the major axis of the disc and the shaft 17, 17' is about 60° (see Fig. 1). This angle α may vary between 45° and 80°. The discs 22, 22' are so inclined in relation to the respective shafts 17, 17' and have such an elliptic shape as to have a circular axial projection, as illustrated in Fig. 3. The discs 22, 22' are so positioned on the respective shafts 17, 17' that the discs of the one shaft project into the spaces between the discs of the other shaft.
Each of the discs 22, 22* arranged and designed in the manner indicated above performs, during the rotation of the shafts 17, 17', a throwing movement conducive to thorough mixing of particulate material.
The flue-gas channel 11 illustrated forms part of a system for cleaning flue gases containing gaseous pollu¬ tants, such as sulphur dioxide. The flue gases (P3) are passed through the flue-gas channel 11, in which particu¬ late absorbent material reactive with the gaseous pollu¬ tants is, in moistened state, introduced into the flue gases in order to convert the gaseous pollutants to sepa¬ rable dust. The flue gases are then passed through a dust separator (not shown), in which dust is separated from the flue gases and from which the thus-cleaned flue gases are discharged into the surrounding atmosphere. Part of the dust separated in the dust separator is, along with an addition of fresh absorbent, e.g. in the form of particles of burnt lime, supplied as particulate material (PI) to the inlet 9 of the container 1, so as to be, in the container, mixed with water sprayed over the particu¬ late material in the container through the nozzles 16. The particulate material in the container 1 is maintained in fluidised state by means of air (P4) which, via the air inlets 13 and 14, the chamber 12 and the fluidisation cloth 6, is introduced into the container. As a result of this fluidisation as well as the rotation of the shafts 17, 17', one obtains a homogeneously moistened, homoge- neous mixture of the particulate material, this mixture being, via the overflow 10, supplied to the flue-gas channel 11 as absorbent material (P2) .
By a partition 23 in the front part of the container 1, the chamber 12 is divided into a front part chamber 12a, which is situated in the flue-gas channel 11, and a rear part chamber 12b. As appears from Fig. 1, the air inlet 13 opens into the rear part chamber 12b, while the air inlet 14 opens into the front part chamber 12a. With this division of the chamber 12, it is possible to achieve different fluidisation conditions in the two part chambers 12a and 12b, especially with a view to so adapt- ing the air supply to the front part chamber 12a that one there obtains a suitable fluidisation state for the mate¬ rial discharge.
In a test aiming to illuminate the effect of the fluidisation on the power consumption, the container 1 was filled with particulate material. In this test, the container 1 had a volume of 0.3 m3. The shafts 17, 17' were rotated at a speed of 200 rpm. The flow rate of par¬ ticulate material passing through the container was 8 m3/h, and the flow rate of the water was 240 1/h. In the fluidisation of the particulate material, the power consumption, including the power consumption of the supply of fluidisation air (0.08 m3/s), was found to be 2.2 kW. With no fluidisation but otherwise under the same conditions, the power consumption was 3 kW. In the illustrated mixing device described above, the front end of the container 1 is inserted in a channel 11. However, the mixing device may also be used for dis¬ charging a homogeneously moistened, homogeneous mixture of particulate material into two separate channels, in which case the front end of the container 1 extends into these two channels in such a manner that the mixture is discharged into the one channel via the overflow 10 in the side wall 2 and discharged into the other channel via the overflow 10 in the side wall 3. The relationship between the flows of material to the two channels may be set by choosing suitable levels for the overflow 10 at the respective sides, i.e. by a suitable choice of height for the respective side walls 2, 3 in the container part inserted in the channels.

Claims

1. A device for mixing particulate material and liquid, for instance for mixing water and absorbent material which is reactive with gaseous pollutants in flue gases (P3) and which, during cleaning of the flue gases, is to be introduced into these gases in moistened state in order to convert the gaseous pollutants to sepa- rable dust, said device comprising a container (1), an inlet (9) for the introduction of particulate material (PI) into the container (1), a spraying means (15, 16) for spraying liquid over the particulate material in the container, an agitator (17, 17', 22, 22') arranged in the container (1), and an outlet (10) for discharging mate¬ rial (P2) mixed with liquid from the container (1), c h a r a c t e r i s e d in that there is provided a fluidisation means (6, 12, 13, 14) adapted to fluidise the particulate material in the container (1) during the mixing operation.
2. A device as set forth in claim 1, c h a r a c ¬ t e r i s e d in that the container (1) has an upper bot¬ tom (6) and a lower bottom (7), which between them define a chamber (12) and of which the upper bottom (6) is air- permeable, and that there is provided an air-supply means (13, 14) adapted to supply air to the chamber (12) with a view to fluidising the particulate material in the con¬ tainer (1).
3. A device as set forth in claim 1 or 2, c h a r - a c t e r i s e d in that the agitator (17, 17', 22, 22' ) consists of at least one rotary shaft (17, 17') which extends along the container (1 ) and on which a plurality of discs (22, 22'), through the centres of which extends the shaft (17, 17'), are mounted in inclined state at an axial distance from one another.
4. A device as set forth in claim 3, c h a r a c ¬ t e r i s e d in that the discs (22, 22' ) have an ellip- tic shape and are, about their minor axes, so inclined in relation to the shaft (17, 17') as to have a circular axial projection.
5. A device as set forth in claim 4, c h a r a c - t e r i s e d in that the discs (22, 22' ) are inclined at an angle of 45-80°.
6. A device as set forth in claim 5, c h a r a c ¬ t e r i s e d in that the discs (22, 22' ) are inclined at an angle of about 60°.
PCT/SE1995/001401 1994-11-28 1995-11-24 Device for mixing particulate material and liquid Ceased WO1996016727A1 (en)

Priority Applications (20)

Application Number Priority Date Filing Date Title
DK95939453T DK0794830T3 (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid
SI9520142A SI9520142B (en) 1994-11-28 1995-11-24 Device for producing mixtures of substances in the form of particles and liquids
JP51716896A JP3649290B2 (en) 1994-11-28 1995-11-24 Mixing device for mixing particulate material and liquid
SK660-97A SK282040B6 (en) 1994-11-28 1995-11-24 MIXING MATERIAL AND LIQUID DEVICE
CA002205059A CA2205059C (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid
UA97063093A UA32603C2 (en) 1994-11-28 1995-11-24 device for mixing of particles of substance with liquid
HU9800495A HU221802B1 (en) 1994-11-28 1995-11-24 Equipment for mixing granular material and liquid
FI972232A FI972232A0 (en) 1994-11-28 1995-11-24 Granular material and liquid mixing device
AT95939453T ATE212875T1 (en) 1994-11-28 1995-11-24 DEVICE FOR MIXING PARTICLE MATERIALS AND LIQUIDS
MD97-0234A MD1228G2 (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid
CZ19971573A CZ287812B6 (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid
RO97-00950A RO115424B1 (en) 1994-11-28 1995-11-24 DEVICE FOR MIXING GRANULATED MATERIAL WITH A LIQUID
AU41262/96A AU699500B2 (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid
US08/849,113 US5887973A (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid
EE9700119A EE9700119A (en) 1994-11-28 1995-11-24 Device for mixing a granular substance with a liquid
PL95320348A PL178051B1 (en) 1994-11-28 1995-11-24 Apparatus for mixing together solids and liquids
EP95939453A EP0794830B1 (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid
DE69525370T DE69525370T2 (en) 1994-11-28 1995-11-24 DEVICE FOR MIXING PARTICULATE MATERIALS AND LIQUIDS
RU97110654A RU2137535C1 (en) 1994-11-28 1995-11-24 Device for mixing particles of substance with liquid
BR9509828A BR9509828A (en) 1994-11-28 1995-11-24 Device for mixing particulate material and liquid

Applications Claiming Priority (2)

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SE9404104A SE503674C2 (en) 1994-11-28 1994-11-28 Device for mixing particulate matter and liquid
SE9404104-3 1994-11-28

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WO1996016727A1 true WO1996016727A1 (en) 1996-06-06

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JP (1) JP3649290B2 (en)
KR (1) KR100425997B1 (en)
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DE (1) DE69525370T2 (en)
DK (1) DK0794830T3 (en)
EE (1) EE9700119A (en)
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WO1998043729A1 (en) * 1997-03-17 1998-10-08 ABB Fläkt AB Device for mixing particulate material and liquid
WO2004026443A1 (en) * 2002-09-20 2004-04-01 Alstom Technology Ltd Method and device for separating gaseous pollutants from hot process gases by absorption and a mixer for moistening particulate dust
AT504426B1 (en) * 2006-10-24 2008-05-15 Scheuch Gmbh APPARATUS FOR MOISTURIZING A SORPTION AGENT
EP2457637A1 (en) 2010-11-24 2012-05-30 Alstom Technology Ltd Method of cleaning a carbon dioxide rich flue gas and a boiler system
EP2878889A1 (en) 2013-11-27 2015-06-03 Alstom Technology Ltd Dry scrubber system with air preheater protection
EP2881162A2 (en) 2013-11-26 2015-06-10 Alstom Technology Ltd Dry scrubber system with low load distributor device
EP3002051A1 (en) 2014-10-03 2016-04-06 Alstom Technology Ltd Dust separator useful with dry scrubber system
EP3269692A1 (en) 2016-07-11 2018-01-17 General Electric Technology GmbH Integrated lime hydrator
US20210379797A1 (en) * 2020-06-05 2021-12-09 Vermeer Manufacturing Company Mixing systems having disk assemblies

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US9993762B2 (en) 2013-05-13 2018-06-12 General Electric Technology Gmbh Quiet pulse valve
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US10232310B2 (en) 2016-10-05 2019-03-19 General Electric Technology Gmbh Multi-function duct for dry scrubber system
US11092980B2 (en) 2016-11-16 2021-08-17 General Electric Technology Gmbh Pulse valve with pressure vessel penetration
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CN111468026B (en) * 2020-04-13 2022-04-12 中冶长天国际工程有限责任公司 A material humidification control system and control method
US11439947B2 (en) 2020-08-28 2022-09-13 Andritz Aktiebolag System and method for mixing recirculating combustion ash with hydrated lime and water

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US6213629B1 (en) 1997-03-17 2001-04-10 ABB Fläkt AB Device for mixing flue gas with particulate material and liquid
CN1089268C (en) * 1997-03-17 2002-08-21 Abb弗莱克特股份公司 Device for mixing particulate material and liquid
WO1998043729A1 (en) * 1997-03-17 1998-10-08 ABB Fläkt AB Device for mixing particulate material and liquid
WO2004026443A1 (en) * 2002-09-20 2004-04-01 Alstom Technology Ltd Method and device for separating gaseous pollutants from hot process gases by absorption and a mixer for moistening particulate dust
US7387662B2 (en) 2002-09-20 2008-06-17 Alstom Technology Ltd Method and device for separating gaseous pollutants from hot process gases by absorption and a mixer for moistening particulate dust
EP2295128A1 (en) * 2002-09-20 2011-03-16 Alstom Technology Ltd Method of separating gaseous contaminants from hot gases and device for performing the method
AT504426B1 (en) * 2006-10-24 2008-05-15 Scheuch Gmbh APPARATUS FOR MOISTURIZING A SORPTION AGENT
DE102007045751B4 (en) * 2006-10-24 2010-01-21 Scheuch Gmbh Apparatus and method for moistening a sorbent
EP2990094A1 (en) 2010-11-24 2016-03-02 Alstom Technology Ltd Method of cleaning a carbon dioxide rich flue gas and a boiler system
EP2457637A1 (en) 2010-11-24 2012-05-30 Alstom Technology Ltd Method of cleaning a carbon dioxide rich flue gas and a boiler system
US9638416B2 (en) 2010-11-24 2017-05-02 General Electric Technology Gmbh Method of cleaning a carbon dioxide rich flue gas and a boiler system
EP2881162A2 (en) 2013-11-26 2015-06-10 Alstom Technology Ltd Dry scrubber system with low load distributor device
EP2878889A1 (en) 2013-11-27 2015-06-03 Alstom Technology Ltd Dry scrubber system with air preheater protection
EP3002051A1 (en) 2014-10-03 2016-04-06 Alstom Technology Ltd Dust separator useful with dry scrubber system
US9643117B2 (en) 2014-10-03 2017-05-09 General Electric Technology Gmbh Dust separator useful with dry scrubber system
EP3269692A1 (en) 2016-07-11 2018-01-17 General Electric Technology GmbH Integrated lime hydrator
WO2018011024A1 (en) 2016-07-11 2018-01-18 General Electric Technology Gmbh Integrated lime hydrator
US11059748B2 (en) 2016-07-11 2021-07-13 General Electric Technology Gmbh Integrated lime hydrator
US20210379797A1 (en) * 2020-06-05 2021-12-09 Vermeer Manufacturing Company Mixing systems having disk assemblies
US11890782B2 (en) * 2020-06-05 2024-02-06 Vermeer Manufacturing Company Mixing systems having disk assemblies
US20240173892A1 (en) * 2020-06-05 2024-05-30 Vermeer Manufacturing Company Mixing systems having disk assemblies
US12208539B2 (en) 2020-06-05 2025-01-28 Vermeer Manufacturing Company Mixing systems and methods including disk assemblies

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Publication number Publication date
UA32603C2 (en) 2001-02-15
TR199501493A1 (en) 1996-10-21
SE9404104L (en) 1996-05-29
KR980700120A (en) 1998-03-30
FI972232A7 (en) 1997-05-27
EE9700119A (en) 1997-12-15
PT794830E (en) 2002-07-31
PL178051B1 (en) 2000-02-29
KR100425997B1 (en) 2004-06-30
SI9520142A (en) 1997-12-31
HU221802B1 (en) 2003-01-28
CA2205059C (en) 2005-07-05
CN1076980C (en) 2002-01-02
ES2172602T3 (en) 2002-10-01
SK282040B6 (en) 2001-10-08
CZ157397A3 (en) 1997-12-17
FI972232L (en) 1997-05-27
PL320348A1 (en) 1997-09-29
DE69525370T2 (en) 2003-03-13
RU2137535C1 (en) 1999-09-20
JPH10510204A (en) 1998-10-06
SI9520142B (en) 2004-08-31
EP0794830A1 (en) 1997-09-17
FI972232A0 (en) 1997-05-27
CN1166793A (en) 1997-12-03
SK66097A3 (en) 1997-10-08
CA2205059A1 (en) 1996-06-06
AU4126296A (en) 1996-06-19
BR9509828A (en) 1997-09-30
JP3649290B2 (en) 2005-05-18
MD1228F1 (en) 1999-05-31
SE503674C2 (en) 1996-07-29
RO115424B1 (en) 2000-02-28
EP0794830B1 (en) 2002-02-06
AU699500B2 (en) 1998-12-03
SE9404104D0 (en) 1994-11-28
MD1228G2 (en) 2000-02-29
ZA959875B (en) 1996-05-30
CZ287812B6 (en) 2001-02-14
DE69525370D1 (en) 2002-03-21
US5887973A (en) 1999-03-30
DK0794830T3 (en) 2002-04-29
HUT77639A (en) 1998-06-29
ATE212875T1 (en) 2002-02-15

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