CN210021603U - Device for treating calcining waste gas - Google Patents
Device for treating calcining waste gas Download PDFInfo
- Publication number
- CN210021603U CN210021603U CN201920742124.5U CN201920742124U CN210021603U CN 210021603 U CN210021603 U CN 210021603U CN 201920742124 U CN201920742124 U CN 201920742124U CN 210021603 U CN210021603 U CN 210021603U
- Authority
- CN
- China
- Prior art keywords
- passes
- venturi scrubber
- cyclone
- zirconium
- waste gas
- 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.)
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- 239000002912 waste gas Substances 0.000 title claims abstract description 28
- 238000001354 calcination Methods 0.000 title claims abstract description 11
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 20
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 55
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 40
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- QRTRRDMHGTZPBF-UHFFFAOYSA-L oxygen(2-);zirconium(4+);sulfate Chemical compound [O-2].[Zr+4].[O-]S([O-])(=O)=O QRTRRDMHGTZPBF-UHFFFAOYSA-L 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 15
- 238000005406 washing Methods 0.000 description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 12
- 239000003546 flue gas Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Substances [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 3
- 239000012719 wet electrostatic precipitator Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a handle device of calcining waste gas, including the zirconium rotary kiln, cyclone, venturi scrubber and electrostatic precipitator, the zirconium rotary kiln passes through intake pipe intercommunication cyclone, cyclone bottom is through recovery tube intercommunication zirconium rotary kiln, cyclone passes through the blast pipe and connects the venturi scrubber, the venturi scrubber passes through first pipe connection clarifier, the clarifier passes through the overflow pipe and connects the overflow launder, the overflow launder passes through the circulating pump and connects the venturi scrubber, the venturi scrubber passes through second pipe connection alkali wash tower, alkali wash tower passes through third pipe connection electrostatic precipitator, electrostatic precipitator passes through exhaust pipe connection chimney, the utility model discloses structural design is novel, can effectual processing basic zirconium sulfate production zirconia in-process waste gas that produces, then discharge to reach standard, and environmental protection performance is good.
Description
Technical Field
The utility model relates to an exhaust-gas treatment technical field specifically is a handle device of calcining waste gas.
Background
The waste gas treatment refers to the work of pretreating waste gas generated in industrial places and factory workshops before the waste gas is discharged to the outside so as to reach the national standard of the external discharge of the waste gas. The general waste gas treatment comprises the aspects of organic waste gas treatment, dust waste gas treatment, acid-base waste gas treatment, peculiar smell waste gas treatment, air sterilization, disinfection and purification and the like.
At present, the production line of zirconia in China does not use a rotary kiln to calcine and produce zirconia.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a handle device of calcining waste gas to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a handle device of calcining waste gas, includes zirconium rotary kiln, cyclone, venturi scrubber and electrostatic precipitator, the zirconium rotary kiln passes through intake pipe intercommunication cyclone, the cyclone bottom is through recovery tube intercommunication zirconium rotary kiln, cyclone passes through the blast pipe and connects the venturi scrubber, the venturi scrubber passes through first pipe connection clarifier, the overflow launder is connected through the overflow pipe to the clarifier, the overflow launder passes through the circulating pump and connects the venturi scrubber, the venturi scrubber passes through second pipe connection alkali wash tower, alkali wash tower passes through third pipe connection electrostatic precipitator, electrostatic precipitator passes through exhaust pipe connection chimney.
Preferably, the using method comprises the following steps:
A. waste gas generated by calcining basic zirconium sulfate in the rotary zirconium kiln enters a cyclone dust collector, and 90% of zirconia dust reenters the rotary zirconium kiln from the bottom of the cyclone dust collector;
B. when the dusty airflow enters the cyclone dust collector along a tangent line, the airflow changes from linear motion into circular motion, when the airflow reaches a certain position at the lower end of the cone, the airflow continuously flows spirally from the middle part of the cyclone dust collector from bottom to top in the same rotating direction, finally, the purified air is discharged out of the dust collector through the exhaust pipe, and a part of dust particles which are not collected escape from the exhaust pipe;
C. unrecovered zirconia dust and SO3、SO2The flue gas is led out from an outlet at the top of the cyclone dust collector and enters a Venturi scrubber, water mist sprayed by the Venturi scrubber absorbs part of zirconia dust, a liquid phase in the Venturi flows back to the clarifier, supernatant of the clarifier overflows to an overflow groove, and then the supernatant is pumped to the Venturi scrubber through a circulating pump;
D. the flue gas treated by the Venturi scrubber comprises zirconia dust with small particles and SO3、SO2Then enters an alkaline washing tower which absorbs SO in the flue gas through sodium hydroxide3、SO2；
E. After passing through an alkaline washing tower, the waste gas contains zirconia dust with small particles and water vapor, and then the residual zirconia dust and the water vapor are removed through an electrostatic precipitator;
F. the treated waste gas is discharged through a chimney under the traction of a fan, and the content of particulate matters is lower than 10mg/m3。
Preferably, the electrostatic precipitator is a wet electrostatic precipitator.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses structural design is novel, during the use, comes from the flue gas of zirconium rotary kiln, advances to go into cyclone, and the solid material after the cyclone returns zirconium rotary kiln, contains a small amount of zirconia powder, SO3、SO2The flue gas is led out from an outlet at the top of the cyclone dust collector and enters a Venturi washing system for washing, and the flue gas after being washed by the Venturi enters an alkali washing tower for treating SO3、SO2After the treatment, the wet electrostatic precipitator is carried outThe dirt ware is handled substances such as small granule and liquid drop in the waste gas, final discharge to reach standard, the utility model discloses can effectual processing zirconium basic sulfate production zirconia in-process produce the waste gas, then discharge to reach standard, the feature of environmental protection is good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present invention provides a technical solution: a device for treating calcining waste gas, which comprises a zirconium rotary kiln 1, a cyclone dust collector 2, a Venturi scrubber 3 and an electrostatic dust collector 4, the zirconium rotary kiln 1 is communicated with the cyclone dust collector 2 through an air inlet pipe 5, the bottom of the cyclone dust collector 2 is communicated with the zirconium rotary kiln 1 through a recovery pipe 6, the cyclone dust collector 2 is connected with a Venturi scrubber 3 through an exhaust pipe 7, the Venturi scrubber 3 is connected with a clarifier 9 through a first pipeline 8, the clarifier 9 is connected with an overflow trough 11 through an overflow pipe 10, the overflow trough 11 is connected with the Venturi scrubber 3 through a circulating pump 12, the venturi scrubber 3 is connected with an alkaline washing tower 14 through a second pipeline 13, the alkaline washing tower 14 is connected with an electrostatic dust collector 4 through a third pipeline 15, the electrostatic dust collector 4 adopts a wet electrostatic dust collector, and the electrostatic dust collector 4 is connected with a chimney 17 through an exhaust pipe 16.
Wherein, cyclone's theory of operation: when the dusty airflow enters the cyclone dust collector along a tangent line, the airflow changes from linear motion into circular motion. The dust particles with density higher than that of the gas lose inertia force when contacting with the wall surface and fall down along the wall surface to enter the dust discharge pipe. When the rotating and descending outward rotating airflow reaches the cone, the outward rotating airflow is closed to the center of the dust remover due to the conical contraction. When the airflow reaches a certain position at the lower end of the cone, the airflow continues to flow spirally from bottom to top from the middle part of the cyclone dust collector in the same rotating direction. Finally, the purified gas is discharged out of the device through the exhaust pipe. A portion of the dust particles that are not trapped are also escaped therefrom.
The working principle of the Venturi scrubber is as follows: after the dust-containing gas enters the contraction pipe from the gas inlet pipe, the speed of the gas flow is increased along with the reduction of the sectional area, the pressure of the gas flow is gradually converted into kinetic energy, and the gas speed reaches the maximum at the inlet of the throat pipe. The washing liquid is sprayed in through the nozzle along the circumference of the throat pipe, and the liquid drops are further atomized by the impact of the high-speed airflow. The gas phase and the liquid phase are fully mixed in the throat, and the collision and sedimentation efficiency of the dust and the water drops is high. After entering the expansion pipe, the airflow is reduced, and the water drops and dust particles form larger dust-containing water drops. The gas finally enters a demister to realize gas-liquid separation, so that the aim of dust removal is fulfilled.
The working principle of the wet electrostatic dust collector is as follows: the gas flow with particles enters an electrostatic field, and the particle collection can be realized through two fixed parts. The first step is ionization, the particles obtain negative charges, the second step is collection, the negatively charged particles migrate to a collection plate under the action of an electric field, and the particles on the collection plate can be discharged through flushing.
The working principle is as follows: the utility model discloses application method includes following step:
A. waste gas generated by calcining basic zirconium sulfate in the rotary zirconium kiln enters a cyclone dust collector, and 90% of zirconia dust reenters the rotary zirconium kiln from the bottom of the cyclone dust collector;
B. when the dusty airflow enters the cyclone dust collector along a tangent line, the airflow changes from linear motion into circular motion, when the airflow reaches a certain position at the lower end of the cone, the airflow continuously flows spirally from the middle part of the cyclone dust collector from bottom to top in the same rotating direction, finally, the purified air is discharged out of the dust collector through the exhaust pipe, and a part of dust particles which are not collected escape from the exhaust pipe;
C. unrecovered zirconia dust and SO3、SO2The flue gas is led out from an outlet at the top of the cyclone dust collector and enters a Venturi scrubber, water mist sprayed by the Venturi scrubber absorbs part of zirconia dust, liquid phase in the Venturi flows back to the clarifier, supernatant of the clarifier overflows to an overflow groove, then the supernatant flows to the Venturi scrubber through a circulating pump, most of the zirconia dust can be removed through a Venturi scrubbing system, and the dust with smaller particles cannot be completely removed;
D. the flue gas treated by the Venturi scrubber comprises zirconia dust with small particles and SO3、SO2Then enters an alkaline washing tower which absorbs SO in the flue gas through sodium hydroxide3、SO2；
E. After passing through an alkaline washing tower, the waste gas contains zirconia dust with small particles and water vapor, and then the residual zirconia dust and the water vapor are removed through an electrostatic precipitator, wherein the electrostatic precipitator needs to be periodically washed to discharge dust collected by hands;
F. treated waste gas is in fanIs discharged through a chimney after reaching the standard under the traction, and the content of particulate matters is lower than 10mg/m3。
To sum up, the utility model discloses structural design is novel, during the use, comes from the flue gas of zirconium rotary kiln, advances to go into cyclone, and the solid material after the cyclone returns zirconium rotary kiln, contains a small amount of zirconia powder, SO3、SO2The flue gas is led out from an outlet at the top of the cyclone dust collector and enters a Venturi washing system for washing, and the flue gas after being washed by the Venturi enters an alkali washing tower for treating SO3、SO2And the processing finishes and then enters the wet electrostatic precipitator, and the substances such as tiny granule and liquid drop in to waste gas are handled, final discharge to reach standard, the utility model discloses can effectual processing basic zirconium sulfate production zirconia in-process produce the waste gas of production, then discharge to reach standard, the feature of environmental protection is good.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. The utility model provides a handle device of calcining waste gas, includes zirconium rotary kiln (1), cyclone (2), venturi scrubber (3) and electrostatic precipitator (4), its characterized in that: zirconium rotary kiln (1) passes through intake pipe (5) intercommunication cyclone (2), cyclone (2) bottom is through recovery tube (6) intercommunication zirconium rotary kiln (1), cyclone (2) are through blast pipe (7) connection venturi scrubber (3), clarifier (9) are connected through first pipeline (8) in venturi scrubber (3), overflow launder (11) are connected through overflow pipe (10) in clarifier (9), overflow launder (11) are connected venturi scrubber (3) through circulating pump (12), alkali wash tower (14) are connected through second pipeline (13) in venturi scrubber (3), alkali wash tower (14) are connected through third pipeline (15) electrostatic precipitator (4), chimney (17) are connected through electrostatic precipitator (16) in electrostatic precipitator (4).
2. An apparatus for treating calcination waste gas according to claim 1, wherein: the electrostatic dust collector (4) adopts a wet electrostatic dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920742124.5U CN210021603U (en) | 2019-05-22 | 2019-05-22 | Device for treating calcining waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920742124.5U CN210021603U (en) | 2019-05-22 | 2019-05-22 | Device for treating calcining waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210021603U true CN210021603U (en) | 2020-02-07 |
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| CN201920742124.5U Active CN210021603U (en) | 2019-05-22 | 2019-05-22 | Device for treating calcining waste gas |
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| Country | Link |
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| CN (1) | CN210021603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026046A (en) * | 2019-05-22 | 2019-07-19 | 国核维科锆铪有限公司 | A kind of device and method of processing calcining exhaust gas |
-
2019
- 2019-05-22 CN CN201920742124.5U patent/CN210021603U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026046A (en) * | 2019-05-22 | 2019-07-19 | 国核维科锆铪有限公司 | A kind of device and method of processing calcining exhaust gas |
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