CN212680460U - Water film dust removal device for treating solid particles in dried tail gas of polyaluminium chloride - Google Patents
Water film dust removal device for treating solid particles in dried tail gas of polyaluminium chloride Download PDFInfo
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- CN212680460U CN212680460U CN202021224238.XU CN202021224238U CN212680460U CN 212680460 U CN212680460 U CN 212680460U CN 202021224238 U CN202021224238 U CN 202021224238U CN 212680460 U CN212680460 U CN 212680460U
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Abstract
The utility model belongs to the technical field of polyaluminium chloride production equipment, in particular to a water film dust removal device for treating polyaluminium chloride dry tail gas solid particles, which comprises a water film dust removal unit, a liquid storage unit and a particle recovery unit; the water film dedusting unit comprises a first-stage water film deduster, a second-stage water film deduster and a third-stage water film deduster. The utility model discloses mainly solve current poly aluminium chloride for production water film dust collector and can not carry out recycle once more to the poly aluminium chloride granule in the tail gas after the water film removes dust, cause solid particle escape and extravagant problem, have rational in infrastructure, characteristics that the result recycle is high.
Description
Technical Field
The utility model belongs to the technical field of polyaluminium chloride production facility, concretely relates to handle water film dust collector of dry tail gas solid particle of polyaluminium chloride.
Background
The existing polyaluminium chloride industry adopts a roller drying method or a spray drying method for production, the dried polyaluminium chloride adopts a water film dust removal process to remove dust and cool the polyaluminium chloride, a water film dust remover is adopted in the water film dust removal process to remove dust, and the water film dust remover has the working principle that dust-containing gas is introduced from the lower part of a cylinder body along the tangential direction, rotates and rises, dust particles are separated under the action of centrifugal force, are thrown to the inner wall of the cylinder body, are adsorbed by a water film layer flowing on the inner wall of the cylinder body and flow to the bottom along with water to be discharged. The water film layer is formed by jetting water tangentially along the inner wall by a nozzle arranged in the cylinder, and the inner wall of the cylinder is always covered with a layer of water film flowing downwards, so that the aim of removing dust is fulfilled.
The existing water film dedusting process adopts a primary water film to remove dust, so that the dedusting effect is not thorough, the existing process adopts water spraying, the utilization of heat energy of a drying tower is zero, and the extensive capture process cannot recycle the polyaluminium chloride particles in the tail gas again, so that solid particles escape and waste are caused.
Therefore, the existing water film dust removing device for polyaluminium chloride production needs to be improved so as to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to current polyaluminium chloride production water film dust collector can not carry out recycle once more to the polyaluminium chloride granule in the tail gas after the water film removes dust, cause solid particle escape and extravagant problem, a handle polyaluminium chloride dry tail gas solid particle's water film dust collector is proposed, remove dust through changing the one-level, concentrate to tertiary dust removal, it is concentrated, the concentrated tower hookup location of rational arrangement, and carry out recycle once more to the polyaluminium chloride granule in the tail gas, realize comprehensive entrapment, increase the yield.
In order to achieve the aim, the utility model discloses a water film dust removal device for treating polyaluminium chloride dry tail gas solid particles, which comprises a water film dust removal unit, a liquid storage unit and a particle recovery unit;
the water film dedusting unit comprises a first-stage water film deduster, a second-stage water film deduster and a third-stage water film deduster, a first-stage air inlet pipe is arranged at an air inlet at the bottom of the first-stage water film deduster, a first-stage exhaust pipe is arranged at an air outlet at the top of the first-stage water film deduster, a second-stage air inlet pipe is arranged at an air inlet at the bottom of the second-stage water film deduster, a second-stage exhaust pipe is arranged at an air outlet at the top of the second-stage water film deduster, a third-stage air inlet pipe is arranged at;
the liquid storage unit comprises a mother liquid recovery tank and a mother liquid lifting tank, the mother liquid recovery tank is communicated with the mother liquid lifting tank through a pipeline, the mother liquid lifting tank is communicated with a water film spraying pipe in a first-stage water film dust remover through a first-stage liquid inlet pipe, the mother liquid lifting tank is communicated with the water film spraying pipe in a second-stage water film dust remover through a second-stage liquid inlet pipe, and the mother liquid lifting tank is communicated with the water film spraying pipe in the third-stage water film dust remover through a third-stage liquid inlet pipe;
the primary water film dust remover is communicated with the mother liquor recovery tank through a primary liquid outlet pipe, the secondary water film dust remover is communicated with the mother liquor recovery tank through a secondary liquid outlet pipe, and the tertiary water film dust remover is communicated with the mother liquor recovery tank through a tertiary liquid outlet pipe;
the particle recovery unit comprises a first spray concentration tank, a second spray concentration tank and a third spray concentration tank; collecting pipes communicated with the mother liquor recovery tank are arranged at the bottom ends of the first spray concentration tank, the second spray concentration tank and the third spray concentration tank;
the exhaust end of one-level blast pipe communicates with the concentrated jar inlet end of first spraying mutually, and the inlet end of second grade intake pipe communicates with the concentrated jar of first spraying mutually of giving vent to anger mutually, and the exhaust end of second grade blast pipe communicates with the concentrated jar inlet end of second spraying mutually, and the inlet end of tertiary intake pipe communicates with the concentrated jar of giving vent to anger mutually of second spraying, and the exhaust end of tertiary blast pipe communicates with the inlet end of the concentrated jar of third spraying mutually, and the concentrated jar of giving vent to anger of third spraying holds and is equipped with the waste gas blast pipe.
Furthermore, a primary pump is arranged on a pipeline connecting the mother liquor recovery tank and the mother liquor lifting tank, and a secondary pump and a primary liquor inlet valve are arranged on a primary liquor inlet pipe; a primary liquid outlet valve is arranged on the primary liquid outlet pipe; a third-stage pump and a second-stage liquid inlet valve are arranged on the second-stage liquid inlet pipe; a second-stage liquid outlet valve is arranged on the second-stage liquid outlet pipe; a fourth-stage pump and a third-stage liquid inlet valve are arranged on the third-stage liquid inlet pipe; and a third-stage liquid outlet valve is arranged on the third-stage liquid outlet pipe.
Furthermore, the bottom ends of the first spray concentration tank, the second spray concentration tank and the third spray concentration tank are all in a conical structure.
Furthermore, all be equipped with atomizer in first spray concentration jar, the concentrated jar of second spray and the third spray concentration jar.
Further, the tail end of the exhaust gas exhaust pipe extends vertically upwards.
The utility model has the advantages that:
1. through changing one-level dust removal technology into tertiary dust removal technology, rationally laying out the enrichment tower hookup location, reform transform the enrichment tower structure and carry out make full use of drying tower tail gas heat energy, improve liquid polyaluminium chloride concentration, reduce the energy consumption.
2. The original method that the water film dust removal device adopts water to directly spray is changed, and the polyaluminium chloride mother liquor is adopted to spray, so that the capturing of particles in the tail gas is more effective, and the spraying effect is greatly improved.
3. Improve concentration tower nozzle position and nozzle size, make and spray powerful injection, carry out the full coverage to tail gas in the tower and spray and do not keep the dead angle, improve and spray the effect, make full use of heat energy, reinforcing concentration effect avoids concentrating excessively, arouses the crystallization.
4. And the polyaluminium chloride particles in the dry tail gas are enriched in the mother solution again for recycling, so that the yield of the polyaluminium chloride is improved.
The device has characteristics rational in infrastructure, that the result recycle is high.
Drawings
FIG. 1 is a schematic structural diagram of a water-film dust-removing device for treating solid particles in polyaluminum chloride dry tail gas in example 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, but the scope of the invention is not limited thereto.
Example 1
As shown in figure 1, the water film dust removal device for treating polyaluminium chloride dry tail gas solid particles comprises a water film dust removal unit, a liquid storage unit and a particle recovery unit;
the water film dedusting unit comprises a primary water film deduster 1, a secondary water film deduster 2 and a tertiary water film deduster 3, wherein a primary air inlet pipe 11 is arranged at an air inlet at the bottom of the primary water film deduster 1, a primary exhaust pipe is arranged at an air outlet at the top end of the primary water film deduster 1, a secondary air inlet pipe is arranged at an air inlet at the bottom of the secondary water film deduster 2, a secondary exhaust pipe is arranged at an air outlet at the top end of the secondary water film deduster 2, a tertiary air inlet pipe is arranged at an air inlet at the bottom of the tertiary water film deduster 3, and a tertiary exhaust pipe is arranged at;
the primary water film deduster 1, the secondary water film deduster 2 and the tertiary water film deduster 3 are all internally provided with water film spray pipes for forming water films and water mist, the spraying directions of the water film spray pipes are vertical downwards, specifically, the primary water film deduster 1 and the secondary water film deduster 2 are internally provided with double-layer water film spray pipes, and the tertiary water film deduster 3 is internally provided with a single-layer water film spray pipe;
the liquid storage unit comprises a mother liquid recovery tank 4 and a mother liquid lifting tank 5, the right side of the mother liquid recovery tank 4 is communicated with the left side of the mother liquid lifting tank 5 through a pipeline, the right side of the mother liquid lifting tank 5 is communicated with a double-layer water film spraying pipe in a first-level water film dust collector 1 through a first-level liquid inlet pipe 13, the right side of the mother liquid lifting tank 5 is communicated with a double-layer water film spraying pipe in a second-level water film dust collector 2 through a second-level liquid inlet pipe 23, and the right side of the mother liquid lifting tank 5 is communicated with a single-layer water film spraying pipe in a third-level;
the bottom of the primary water film dust collector 1 is communicated with the top end of the mother liquor recovery tank 4 through a primary liquid outlet pipe 14, the bottom of the secondary water film dust collector 2 is communicated with the top end of the mother liquor recovery tank 4 through a secondary liquid outlet pipe 24, and the bottom of the tertiary water film dust collector 3 is communicated with the top end of the mother liquor recovery tank 4 through a tertiary liquid outlet pipe 34;
a primary pump 412 is arranged on a pipeline connecting the mother liquor recovery tank 4 and the mother liquor lifting tank 5, and a secondary pump 511 and a primary liquor inlet valve 131 are arranged on the primary liquor inlet pipe 13; a primary liquid outlet valve 141 is arranged on the primary liquid outlet pipe 14; the second-stage liquid inlet pipe 23 is provided with a third-stage pump 512 and a second-stage liquid inlet valve 231; a secondary liquid outlet valve 241 is arranged on the secondary liquid outlet pipe 24; a fourth-stage pump 513 and a third-stage liquid inlet valve 331 are arranged on the third-stage liquid inlet pipe 33; a third-stage liquid outlet valve 341 is arranged on the third-stage liquid outlet pipe 34;
the particle recovery unit comprises a first spray concentration tank 15, a second spray concentration tank 25 and a third spray concentration tank 35, the bottom ends of the first spray concentration tank 15, the second spray concentration tank 25 and the third spray concentration tank 35 are all in a conical structure, and atomizing nozzles are arranged in the first spray concentration tank 15, the second spray concentration tank 25 and the third spray concentration tank 35; the conical bottom ends of the first spray concentration tank 15, the second spray concentration tank 25 and the third spray concentration tank 35 are all provided with collecting pipes communicated with the mother liquor recovery tank 4; in this embodiment, in order to facilitate the pipeline direction, the collecting pipe at the bottom of the third spray concentration tank 35 is directly communicated with the mother liquor recovery tank 4, and the collecting pipes at the bottoms of the first spray concentration tank 15 and the second spray concentration tank 25 are directly connected to the collecting pipe at the bottom of the third spray concentration tank 35;
the exhaust end of the first-level exhaust pipe is communicated with the air inlet end of the first spray concentration tank 15, the air inlet end of the second-level air inlet pipe is communicated with the air outlet end of the first spray concentration tank 15, the exhaust end of the second-level exhaust pipe is communicated with the air inlet end of the second spray concentration tank 25, the air inlet end of the third-level air inlet pipe is communicated with the air outlet end of the second spray concentration tank 25, the exhaust end of the third-level exhaust pipe is communicated with the air inlet end of the third spray concentration tank 35, and the air outlet end of the third spray concentration tank 35 is provided with a waste gas exhaust pipe 32; the tail end of the exhaust gas exhaust pipe 32 extends vertically upwards;
first spray concentration jar 15, can spout the atomized liquid drop in the atomizer in second spray concentration jar 25 and the third spray concentration jar 35, the atomized liquid drop with from one-level water film deduster 1, second grade water film deduster 2 and the 3 exhaust high temperature tail gas of tertiary water film deduster are sufficient after contacting, the steam evaporation of part intensification falls, the poly aluminium chloride solid particle in the tail gas remains in the liquid drop that does not vaporize and constantly enrichment is concentrated, the liquid drop after the concentration subsides fast because of the action of gravity, fall into the toper bottom at last, and discharge to mother liquor recovery tank 4 from the collecting pipe.
In order to realize the dust removal effect of water film dust removal tower, second grade water film dust remover 2 sets up in the position that is higher than one-level water film dust remover 1, and tertiary water film dust remover 3 sets up in the position that is higher than second grade water film dust remover 2, and mother liquor is retrieved jar 4 and is all set up in the position that is less than one-level water film dust remover 1 with mother liquor lifting tank 5.
When the device is used, the primary pump 412 is firstly opened, the polyaluminium chloride mother liquor is conveyed into the mother liquor lifting tank 5 from the mother liquor recovery tank 4, the secondary pump 511 and the primary liquid inlet valve 131 are opened, the polyaluminium chloride mother liquor is pumped into the double-layer water film spray pipe of the primary water film dust collector 1 and is sprayed out from the spray head of the double-layer water film spray pipe, at the moment, the polyaluminium chloride dry tail gas dried by the drying tower enters the primary water film dust collector 1 from the primary gas inlet pipe 11 and is contacted with spray liquor, the primary liquid outlet valve 141 is opened, and the liquid treated by the primary water film is discharged into the mother liquor recovery tank 4 from the primary liquid outlet pipe 14; the temperature of the dry tail gas is 140 ℃ when the dry tail gas enters, the sprayed dry tail gas continuously rises in the primary water film dust collector 1 due to high temperature, sequentially passes through the primary exhaust pipe, the first spray concentration tank 15 and the secondary air inlet pipe, then enters the secondary water film dust collector 2, the tertiary pump 512 and the secondary liquid inlet valve 231 are opened, the polyaluminium chloride mother liquid is pumped into the double-layer water film spray pipe of the secondary water film dust collector 2 and is sprayed out from the spray head of the double-layer water film spray pipe, and then is contacted with the secondary tail gas (the temperature is 100 ℃) entering the secondary water film dust collector 2, the secondary liquid outlet valve 241 is opened, and the liquid treated by the secondary water film is discharged into the mother liquid recovery tank 4 from the secondary liquid outlet pipe 24; dry tail gas after the secondary spray continues to rise in second grade water film deduster 2 because of high temperature, pass through the second grade blast pipe in proper order, concentrated jar 25 of second spray and tertiary intake pipe, get into tertiary water film deduster 3 again, open level four pump 513 and tertiary feed liquor valve 331, go into the individual layer shower of tertiary water film deduster 3 with polyaluminium chloride mother liquor pump, and the shower head blowout from the shower contacts with the interior tertiary tail gas (temperature 100 ℃) of entering tertiary water film deduster 3, open tertiary liquid outlet valve 341, liquid after tertiary water film treatment is discharged to mother liquor recovery tank 4 from tertiary liquid outlet pipe 34.
Through setting up first spray concentration jar 15, second spray concentration jar 25 and third spray concentration jar 35, spout the atomizing liquid drop from the atomizer, and with from one-level water film deduster 1, second grade water film deduster 2 and the tertiary water film deduster 3 exhaust high temperature tail gas are sufficient after-contact, the steam evaporation of part intensification falls, the poly aluminium chloride solid particle in the tail gas remains in the liquid drop that does not vaporize and constantly gathers concentratedly, the liquid drop after the concentration subsides fast because of the action of gravity, fall into the toper bottom at last, and discharge from the collecting pipe to mother liquor recovery tank 4, can catch once more the solid particle in the tail gas after processing through one-level water film deduster 1, second grade water film deduster 2 and tertiary water film deduster 3 water film, and collect, reuse, the yield of poly aluminium chloride is improved.
The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principle in the claims of the present invention are included in the claims of the present invention.
Claims (5)
1. A water film dust removal device for treating polyaluminium chloride dry tail gas solid particles is characterized by comprising a water film dust removal unit, a liquid storage unit and a particle recovery unit;
the water film dedusting unit comprises a first-stage water film deduster, a second-stage water film deduster and a third-stage water film deduster, a first-stage air inlet pipe is arranged at an air inlet at the bottom of the first-stage water film deduster, a first-stage exhaust pipe is arranged at an air outlet at the top of the first-stage water film deduster, a second-stage air inlet pipe is arranged at an air inlet at the bottom of the second-stage water film deduster, a second-stage exhaust pipe is arranged at an air outlet at the top of the second-stage water film deduster, a third-stage air inlet pipe is arranged at;
the liquid storage unit comprises a mother liquid recovery tank and a mother liquid lifting tank, the mother liquid recovery tank is communicated with the mother liquid lifting tank through a pipeline, the mother liquid lifting tank is communicated with a water film spraying pipe in a first-stage water film dust remover through a first-stage liquid inlet pipe, the mother liquid lifting tank is communicated with the water film spraying pipe in a second-stage water film dust remover through a second-stage liquid inlet pipe, and the mother liquid lifting tank is communicated with the water film spraying pipe in the third-stage water film dust remover through a third-stage liquid inlet pipe;
the primary water film dust remover is communicated with the mother liquor recovery tank through a primary liquid outlet pipe, the secondary water film dust remover is communicated with the mother liquor recovery tank through a secondary liquid outlet pipe, and the tertiary water film dust remover is communicated with the mother liquor recovery tank through a tertiary liquid outlet pipe;
the particle recovery unit comprises a first spray concentration tank, a second spray concentration tank and a third spray concentration tank; collecting pipes communicated with the mother liquor recovery tank are arranged at the bottom ends of the first spray concentration tank, the second spray concentration tank and the third spray concentration tank;
the exhaust end of one-level blast pipe communicates with the concentrated jar inlet end of first spraying mutually, and the inlet end of second grade intake pipe communicates with the concentrated jar of first spraying mutually of giving vent to anger mutually, and the exhaust end of second grade blast pipe communicates with the concentrated jar inlet end of second spraying mutually, and the inlet end of tertiary intake pipe communicates with the concentrated jar of giving vent to anger mutually of second spraying, and the exhaust end of tertiary blast pipe communicates with the inlet end of the concentrated jar of third spraying mutually, and the concentrated jar of giving vent to anger of third spraying holds and is equipped with the waste gas blast pipe.
2. The water film dust collector for processing the solid particles in the dry tail gas of polyaluminium chloride as recited in claim 1, wherein a primary pump is disposed on the pipeline connecting the mother liquor recovery tank and the mother liquor lift tank, and a secondary pump and a primary liquor inlet valve are disposed on the primary liquor inlet pipe; a primary liquid outlet valve is arranged on the primary liquid outlet pipe; a third-stage pump and a second-stage liquid inlet valve are arranged on the second-stage liquid inlet pipe; a second-stage liquid outlet valve is arranged on the second-stage liquid outlet pipe; a fourth-stage pump and a third-stage liquid inlet valve are arranged on the third-stage liquid inlet pipe; and a third-stage liquid outlet valve is arranged on the third-stage liquid outlet pipe.
3. The water film dust collector for processing polyaluminium chloride dry tail gas solid particles as recited in claim 1, wherein the bottom ends of the first spray concentration tank, the second spray concentration tank and the third spray concentration tank are all in a conical structure.
4. The water film dust collector for processing polyaluminium chloride dry tail gas solid particles as recited in claim 3, wherein the first spray concentration tank, the second spray concentration tank and the third spray concentration tank are all provided with atomizing nozzles.
5. The apparatus of claim 1, wherein the end of the exhaust gas pipe extends vertically upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021224238.XU CN212680460U (en) | 2020-06-29 | 2020-06-29 | Water film dust removal device for treating solid particles in dried tail gas of polyaluminium chloride |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021224238.XU CN212680460U (en) | 2020-06-29 | 2020-06-29 | Water film dust removal device for treating solid particles in dried tail gas of polyaluminium chloride |
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| CN212680460U true CN212680460U (en) | 2021-03-12 |
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| CN202021224238.XU Active CN212680460U (en) | 2020-06-29 | 2020-06-29 | Water film dust removal device for treating solid particles in dried tail gas of polyaluminium chloride |
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| CN (1) | CN212680460U (en) |
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