CN108514758B - Super-gravity water reducer dehydration equipment and water reducer dehydration method - Google Patents
Super-gravity water reducer dehydration equipment and water reducer dehydration method Download PDFInfo
- Publication number
- CN108514758B CN108514758B CN201810596639.9A CN201810596639A CN108514758B CN 108514758 B CN108514758 B CN 108514758B CN 201810596639 A CN201810596639 A CN 201810596639A CN 108514758 B CN108514758 B CN 108514758B
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- Prior art keywords
- water reducer
- water
- shell
- annular packing
- disc
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 75
- 230000018044 dehydration Effects 0.000 title claims abstract description 23
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 12
- 238000012856 packing Methods 0.000 claims abstract description 32
- 239000010410 layer Substances 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims description 12
- 239000011550 stock solution Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 208000005156 Dehydration Diseases 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
Abstract
The invention discloses a super-gravity water reducer dehydration device, which structurally comprises: the water reducer comprises a shell with a disc-shaped top surface, an annular packing member parallel to the disc-shaped top surface, a rotating shaft, a heating layer positioned on the inner surface layer of the shell, a semi-permeable membrane layer positioned on the heating layer and positioned on the bottom surface of the shell, a raw water reducer liquid inlet pipe penetrating through the center of the disc-shaped top surface and leading into the hollow position of the annular packing member, water reducer outlets positioned on two sides of the shell and a water outlet positioned on the lower part of the shell, wherein the center position of the rotating shaft along the disc-shaped top surface is perpendicular to the disc-shaped top surface, and the upper part of the rotating shaft is fixedly connected with the lower end part of a center hole of the annular packing member in a sealing manner.
Description
Technical Field
The invention relates to the field of supergravity fluid separation, in particular to equipment for separating main components of a water reducer from water in raw water reducer liquid by using a supergravity principle.
Background
The traditional anhydrous method for removing the water in the water reducer has the defects of difficult heat dissipation, over-high reaction speed, wide molecular weight distribution of the prepared water reducer and the like. The heat dissipation is difficult, so that accidents can occur, and the product quality is affected; the reaction speed is too high, which can lead to sudden aggregation, influence the product performance and increase the heat dissipation difficulty; the molecular weight of the water reducer is wide, which is unfavorable for the performance of the water reducer.
The countercurrent rotary packed bed is disclosed in the hypergravity technology commonly used in industry, such as ' Chen Jianfeng and the like, the hypergravity technology and the industrialized application thereof, sulfur-phosphorus design and powder engineering ' 1 st 2012 and pages 6-10 '; xu Juan, et al, and the "super gravity desulfurization technology" discloses a super gravity machine in sulfuric acid industry, sulfur and phosphorus design and powder engineering, at the end of 2013, at 1 st year, page 32. However, none of these machines is used for dewatering of water reducing agents, and in addition, the applicant of the present application has problems that wall sticking and the water and the main components of the water reducing agents cannot be effectively separated when the machine is used for dewatering of the water reducing agents.
Disclosure of Invention
In view of the above, the present invention provides a dehydration apparatus capable of rapidly dehydrating a water reducing agent and enabling the solid content of the obtained water reducing agent to reach 95% or more. According to the invention, the water and the water reducer are centrifugally separated by adopting the rotation of the annular packing member, then the secondary dehydration and filtration are realized through the interception of the semi-permeable membrane, and meanwhile, the mobility of the polymer in the water reducer is ensured by the heating layer on the inner surface of the shell. The application specifically provides the following technical scheme:
the invention provides a super-gravity water reducer dehydration device, which structurally comprises: the water reducer comprises a shell with a disc-shaped top surface, an annular packing member parallel to the disc-shaped top surface, a rotating shaft, a heating layer arranged on the inner surface layer of the shell, a semi-permeable membrane layer arranged on the heating layer and arranged on the bottom surface of the shell, a raw water reducer liquid inlet pipe passing through the center of the disc-shaped top surface and leading into the hollow position of the annular packing member, water reducer outlets arranged on two sides of the shell and water outlets arranged on the lower part of the shell, wherein the center position of the rotating shaft along the disc-shaped top surface is perpendicular to the disc-shaped top surface, the upper part of the rotating shaft is fixedly connected with the lower end part of a center hole of the annular packing member in a sealing way and can drive the annular packing member to move axially, the annular packing member is made of porous materials, the water reducer and water can pass out from the holes of the annular packing member under the action of centrifugal force, and the holes on the semi-permeable membrane layer can allow water molecules to pass through but can not allow water molecules to pass through.
Preferably, a heating component is arranged on a raw water reducer liquid inlet pipe of the super-gravity water reducer dehydration device, and the water reducer is preheated to 60-90 ℃, preferably 65-80 ℃ before entering the super-gravity water reducer dehydration device. The heating component can ensure that the water reducing agent cannot be discharged because of temperature reduction and viscosity rise in the dehydration process.
Preferably, an annular cover body is arranged on the upper end part of the central hole of the annular packing member, and the annular cover body can cover the upper port of the annular packing member and leave a gap with the raw water reducer liquid inlet pipe. After the annular cover body is added, the hollow space of the annular packing member can be increased, and meanwhile, the water reducer cannot overflow from the upper opening of the annular packing member in the process of supergravity dehydration.
The filler member is made of porous materials such as silk screen filler, foam metal filler, high polymer material filler and the like.
The semi-permeable membrane has a thickness of 0.1mm-10mm and is made of cellulose acetate, polyamide, composite membrane and other membranes capable of selectively permeating water.
Preferably, the semipermeable membrane layer 4 extends outwardly from an end adjacent the axis of rotation 6 and is inclined downwardly with its lowermost extent substantially flush with the lower edge of the water reducing agent outlet 3.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of one embodiment of a supergravity dewatering device according to the present invention;
fig. 2 is a schematic view of another embodiment of the supergravity dewatering device according to the present invention.
Reference numerals illustrate:
1. a raw water reducing agent liquid inlet pipe;
2. a housing;
3. a water reducing agent outlet;
4. a semipermeable membrane layer;
5. a water outlet;
6. a rotating shaft;
7. an annular packing member;
8. a heating layer;
9. an annular cover.
Detailed Description
Example 1
Referring to fig. 1, the invention provides a super gravity water reducing agent dehydration device, which structurally comprises: the water reducer comprises a shell 2 with a disc-shaped top surface, an annular packing member 7 parallel to the disc-shaped top surface, a rotating shaft 6, a heating layer 8 arranged on the inner surface layer of the shell, a semi-permeable membrane layer 4 arranged on the heating layer and arranged on the bottom surface of the shell, a raw water reducer liquid inlet pipe 1 passing through the center of the disc-shaped top surface and leading into the hollow position of the annular packing member, water reducer outlets 3 arranged on two sides of the shell and a water outlet 5 arranged at the lower part of the shell, wherein the central position of the rotating shaft 6 extending towards the disc-shaped top surface is perpendicular to the disc-shaped top surface, the upper part of the rotating shaft is in sealing and fixed connection with the lower end part of a central hole of the annular packing member 7 and can drive the annular packing member 7 to axially move, the annular packing member 7 is made of porous materials, the water reducer and water can pass out of pores of the annular packing member 7 under the action of centrifugal force, and the pores on the semi-permeable membrane layer can allow water molecules to pass through, but cannot allow the water reducer molecules to pass through.
In the use process, the water reducer outlet 3 is closed, water reducer stock solution with the solid content of 30-40 wt% is introduced into the hollow part of the annular filler member 7 from the water reducer stock solution inlet pipe 1, if the temperature of the water reducer stock solution is lower than the melting temperature of polymers in the water reducer, the heating layer 8 on the inner surface layer of the shell is started to heat until the water reducer stock solution is kept in a liquid state, then the rotating shaft 6 is started, the annular filler member 7 is driven to rotate through the rotation of the rotating shaft 6, so that water in the water reducer stock solution and main components of the water reducer are sequentially separated, the separated water is discharged through the water outlet 5 through the semi-permeable membrane layer 4, and the main components of the water reducer are discharged through the water reducer outlet 3. The solid content of the finally discharged water reducer can reach more than 90 weight percent.
Example 2
As shown in fig. 2, the other points are the same as in example 1, except that the hollow portion of the annular packing member 1 has a relatively large inner diameter, and in order to prevent liquid from splashing from the upper portion during the supergravity dehydration, an annular cover is provided on the upper end portion of the center hole of the annular packing member 7, which is capable of covering the upper port of the annular packing member with a gap left between the annular cover and the raw water reducing agent liquid inlet pipe.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. A dehydration method of a water reducing agent, wherein dehydration is performed using a super gravity water reducing agent dehydration apparatus, the structure of the super gravity water reducing agent dehydration apparatus comprising: the water reducer comprises a shell with a disc-shaped top surface, an annular packing member parallel to the disc-shaped top surface, a rotating shaft, a heating layer positioned on the inner surface layer of the shell, a semi-permeable membrane layer positioned on the heating layer on the bottom surface of the shell, a raw water reducer liquid inlet pipe passing through the center of the disc-shaped top surface and leading into the hollow position of the annular packing member, water reducer outlets positioned on two sides of the shell and a water outlet positioned at the lower part of the shell, wherein the central position of the rotating shaft along the disc-shaped top surface is perpendicular to the disc-shaped top surface, the upper part of the rotating shaft is fixedly connected with the lower end part of a central hole of the annular packing member in a sealing way and can drive the annular packing member to move axially, the annular packing member is made of porous materials, the water reducer and water can pass out from the pores of the annular packing member under the action of centrifugal force, and the pores on the semi-permeable membrane layer can allow water molecules to pass through but can not allow water molecules to pass through;
the dehydration method comprises the following specific steps: closing a water reducer outlet, introducing water reducer stock solution with solid content of 30-40 wt% into a hollow part of an annular filler member from a water reducer stock solution inlet pipe, if the temperature of the water reducer stock solution is lower than the melting temperature of a polymer in the water reducer, namely, starting a heating layer on a surface layer in a shell to heat until the water reducer stock solution is kept in a liquid state, then starting a rotating shaft, and driving the annular filler member to rotate through the rotation of the rotating shaft, so that water in the water reducer stock solution and main components of the water reducer are sequentially separated, wherein the separated water is discharged through a water outlet through a semi-permeable membrane layer, and the main components of the water reducer are discharged through the water reducer outlet.
2. The dehydration method of claim 1, wherein a heating component is arranged on a raw water reducer liquid inlet pipe of the super-gravity water reducer dehydration device, and the water reducer is preheated to 60-90 ℃ before entering the super-gravity dehydration device.
3. The dewatering method of claim 1, wherein the annular packing element has an annular cover at an upper end of the central bore, the annular cover covering an upper port of the annular packing element and leaving a gap with the water reducing agent stock inlet pipe.
4. The dewatering process of claim 1, wherein the filler member is selected from the group consisting of wire mesh filler, foam metal filler, and polymeric filler.
5. The dehydration method of claim 1, wherein the semi-permeable membrane has a thickness of 0.1mm to 10mm and is made of a cellulose acetate membrane, a polyamide membrane or a composite membrane thereof which is selectively permeable to water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596639.9A CN108514758B (en) | 2018-06-11 | 2018-06-11 | Super-gravity water reducer dehydration equipment and water reducer dehydration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596639.9A CN108514758B (en) | 2018-06-11 | 2018-06-11 | Super-gravity water reducer dehydration equipment and water reducer dehydration method |
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| Publication Number | Publication Date |
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| CN108514758A CN108514758A (en) | 2018-09-11 |
| CN108514758B true CN108514758B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810596639.9A Active CN108514758B (en) | 2018-06-11 | 2018-06-11 | Super-gravity water reducer dehydration equipment and water reducer dehydration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110801649B (en) * | 2019-11-14 | 2021-08-24 | 安徽理工大学 | Ore pulp centrifugal concentration separator that laboratory was used |
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|---|---|---|---|---|
| WO2014138537A1 (en) * | 2013-03-08 | 2014-09-12 | Aerigo Water Technologies L.L.C. | Atmospheric water harvester |
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2018
- 2018-06-11 CN CN201810596639.9A patent/CN108514758B/en active Active
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