CN218077285U - Continuous drying and acid dissolving device for sodium zirconate - Google Patents
Continuous drying and acid dissolving device for sodium zirconate Download PDFInfo
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- CN218077285U CN218077285U CN202221958839.2U CN202221958839U CN218077285U CN 218077285 U CN218077285 U CN 218077285U CN 202221958839 U CN202221958839 U CN 202221958839U CN 218077285 U CN218077285 U CN 218077285U
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Abstract
The utility model relates to a continuous dry acid-soluble device of sodium zirconate. The sodium zirconate continuous drying and acid dissolving device of the utility model comprises a drying device, a conveying device and an acid dissolving device; the drying device comprises a filter press, a wet cake bin, a quantitative feeder and a continuous dryer; the conveying device comprises a screw conveyor; the acid dissolving device comprises a hydrochloric acid high-level liquid storage tank, an acid dissolving transfer stirring tank and a plurality of acid dissolving stirring tanks; a solid feeding hole of the acid-soluble transfer stirring tank is communicated with a discharging hole of the screw conveyor; a discharge hole of the hydrochloric acid high-level storage tank is communicated with a liquid feed hole of the acid dissolution transfer stirring tank through a pipeline; and a feed inlet of the acid-soluble stirring tank is communicated with a discharge outlet of the acid-soluble transfer stirring tank through a pipeline. The utility model provides a continuous dry acid-soluble device of sodium zirconate can realize the continuous dry acid-soluble production of sodium zirconate in the zirconium oxychloride production.
Description
Technical Field
The utility model relates to a zirconium oxychloride production facility field especially relates to a continuous dry acid-soluble device of sodium zirconate in zirconium oxychloride production.
Background
Zirconium oxychloride (ZrOCl) 2 ·8H 2 O) is an important zirconium chemical, a raw material for the synthesis of zirconium dioxide and many zirconium salts. Can be used as paint drying agent, rubber additive, refractory material, ceramic pigment and lubricant; the catalyst is widely applied to the aspects of ceramics, tanning, electronics, jewelry, metallurgical industry, catalysts, medical treatment, automobile exhaust purification and the like. Moreover, zirconium oxychloride is also an important raw material for preparing atomic level zirconium hafnium metal.
The process for producing zirconium oxychloride by the monobasic acid-base method has the characteristics of stable product quality, high production capacity of a device, lower production cost and the like. Has been rapidly developed. The procedure of producing zirconium oxychloride by the acid-base method comprises the steps of alkali fusion to generate sodium zirconate; washing with water to separate out sodium zirconate; acid dissolving to dissolve sodium zirconate to prepare a zirconium oxychloride solution; concentrating and crystallizing to obtain the zirconium oxychloride.
In the prior art, the sodium zirconate acid dissolving step comprises: and (3) the sodium zirconate washed by water enters a filter press for filter pressing, the filter cake is transferred to an acid dissolution tank, and hydrochloric acid is added for stirring and acid dissolution. The whole production flow is carried out in stages, and the high-efficiency production of continuous acid dissolution of the sodium zirconate cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides a continuous dry acid-soluble device of sodium zirconate can realize the continuous production of continuous dry acid-soluble of sodium zirconate in the zirconium oxychloride production.
A continuous drying and acid dissolving device for sodium zirconate comprises a drying device, a conveying device and an acid dissolving device; the drying device comprises a filter press, a wet cake bin, a quantitative feeder and a continuous dryer; the wet cake bin is arranged below the filter press; the feed inlet of the quantitative feeder is communicated with the discharge outlet at the bottom of the wet cake bin; the feed inlet of the continuous dryer is communicated with the discharge port of the quantitative feeder; the conveying device comprises a spiral conveyor; the feed inlet of the spiral conveyor is communicated with the discharge outlet of the continuous dryer; the acid dissolving device comprises a hydrochloric acid high-level liquid storage tank, an acid dissolving transfer stirring tank and a plurality of acid dissolving stirring tanks; the acid-soluble transfer stirring tank comprises a solid feeding hole and a liquid feeding hole; a solid feeding hole of the acid-soluble transfer stirring tank is communicated with a discharging hole of the screw conveyer; a discharge hole of the hydrochloric acid high-position storage tank is communicated with a liquid feed hole of the acid dissolution transfer stirring tank through a pipeline, and the ground clearance of the discharge hole of the hydrochloric acid high-position storage tank is higher than that of the liquid feed hole of the acid dissolution transfer stirring tank; the feed inlet of the acid-soluble stirring tank is communicated with the discharge outlet arranged at the upper half part of the acid-soluble transfer stirring tank through a pipeline, and the ground clearance of the feed inlet of the acid-soluble stirring tank is lower than that of the discharge outlet of the acid-soluble transfer stirring tank; the acid-soluble stirring tank further comprises a feeding valve arranged on the feeding hole and a feed liquid conveying pump communicated with the discharging hole at the bottom end.
The sodium zirconate solution produced in the previous step enters the filter press for filter pressing, a wet filter cake is transferred to the wet cake bin after filter pressing is completed, the quantitative feeder positioned at the bottom of the wet cake bin feeds the sodium zirconate into the continuous dryer in a continuous quantitative mode, the sodium zirconate materials are dried by the continuous dryer and then discharged from a discharge port, the spiral conveyor communicated with the discharge port of the continuous dryer conveys the dried sodium zirconate materials into the acid-soluble transfer stirring tank in a continuous quantitative mode, meanwhile, the hydrochloric acid solution is added into the acid-soluble transfer stirring tank in a continuous quantitative mode according to the raw material proportion, and after the sodium zirconate materials and the hydrochloric acid solution are initially mixed in the acid-soluble transfer stirring tank, the sodium zirconate materials and the hydrochloric acid solution overflow from the discharge port arranged on the upper half portion of the acid-soluble transfer stirring tank to be stirred and dissolved. The acid-soluble stirring tanks are provided with a plurality of acid-soluble stirring tanks, when feeding is carried out, a valve on a feeding hole of one acid-soluble stirring tank is opened for feeding, the valve is closed after the feeding is finished, and a valve of the other acid-soluble stirring tank is opened for feeding. And the material is stirred and dissolved by the stirring tank which finishes feeding, the material is conveyed to the next procedure by the material liquid conveying pump after the dissolution is finished, the material is fed again by the stirring tank after the material liquid is conveyed, the procedures are repeated, and the continuous production is realized in such a way that the operation is repeated. The utility model provides a pair of continuous dry acid-soluble device of sodium zirconate can realize the continuous production of continuous dry acid-soluble of sodium zirconate in the zirconium oxychloride production. And the device dries before the sodium zirconate is dissolved, so that the moisture content in the material is reduced, the dissolving efficiency is improved, and the using amount of a hydrochloric acid solution is effectively reduced. In addition, the quantitative feeder feeds materials quantitatively, quantitatively controls the metering reaction, saves raw materials and improves the efficiency.
Further, the system also comprises an electronic flowmeter arranged on a pipeline between the hydrochloric acid high-level storage tank and the acid dissolution transfer stirring tank. The electronic flow rate accurately measures flow data of the hydrochloric acid solution in the pipeline.
Further, the system also comprises a manual valve arranged on a pipeline between the hydrochloric acid high-level storage tank and the electronic flowmeter and a flow regulating valve arranged on a pipeline between the electronic flowmeter and the acid-soluble transfer stirring tank. The manual valve is used for cutting off materials when equipment fails. The flow regulating valve is used for regulating the flow of the hydrochloric acid solution flowing into the acid-soluble transfer tank.
Further, the acid-soluble stirring tank also comprises an electronic liquid level meter arranged on the acid-soluble stirring tank. And the electronic liquid level meter monitors the liquid level height in the acid-soluble stirring tank in real time.
Further, the feeding valve is a feeding adjusting valve. The valve type of the feeding regulating valve is a regulating valve, and the feeding regulating valve is called as a feeding regulating valve for distinguishing from the flow regulating valve for controlling the flow of the hydrochloric acid solution and is used for controlling the on and off of the feeding of the acid-soluble stirring tank.
Further, the device also comprises a control unit, wherein the control unit is electrically connected with the electronic flowmeter, the flow regulating valve, the electronic liquid level meter and the feeding regulating valve respectively. The control unit calculates the addition of the hydrochloric acid solution according to the data of the electronic flowmeter, adjusts the flow regulating valve and accurately controls the addition of the hydrochloric acid solution according to the design ratio. The control unit controls the adjusting valve to be opened and closed according to the height of the liquid level in the acid-soluble stirring tank, so that the on-off of the feeding of the acid-soluble stirring tank is controlled, the control unit controls the adjusting valve to be opened during feeding, the electronic liquid level meter monitors the liquid level height of the feed liquid in real time, and the control unit controls the adjusting valve to be closed after the liquid level height reaches a set height, so that the feeding is stopped. The metering reaction is quantitatively controlled by using an electric control technology, and the raw materials of the reactants are saved.
The tail gas treatment device comprises a cyclone dust collector, a fan and a water collection tank; the air inlet of the cyclone dust collector is communicated with the air outlet of the continuous dryer through a pipeline; the air inlet of the fan is communicated with the air outlet of the cyclone dust collector through a pipeline; the water collecting tank is arranged at the bottom end of the cyclone dust collector, and the bottom end of the cyclone dust collector is immersed below the liquid level; and a branch pipeline is arranged on a pipeline between the cyclone dust collector and the continuous dryer, and the tail end of the branch pipeline is immersed below the liquid level of the collecting water tank. The fan starts to draw air, a micro-negative pressure environment is formed in the cyclone dust collector, gas (water vapor) generated in the continuous drying machine is sucked into the cyclone dust collector through a pipeline, the cyclone dust collector separates out sodium zirconate dust in tail gas and collects the sodium zirconate dust in the collecting water tank at the bottom, and water condensed and separated out in the pipeline between the cyclone dust collector and the continuous drying machine flows into the collecting water tank from the branch pipeline. Set up tail gas processing apparatus and handle the tail gas that the stoving in-process produced, avoid tail gas to produce the pollution to the environment, retrieve the sodium zirconate dust of taking away in the tail gas simultaneously, avoid the raw materials extravagant.
Furthermore, the tail gas treatment device further comprises a spray tower, wherein a gas inlet of the spray tower is communicated with a gas outlet of the fan through a pipeline, and a gas outlet of the spray tower is communicated with the atmospheric environment. And further dedusting the tail gas discharged by the cyclone separator.
Further, the continuous dryer is a paddle dryer, and the screw conveyor is an auger conveyor.
Further, the control unit is a PLC.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a sodium zirconate continuous acid-dissolving device according to embodiment 1 of the present invention.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood 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 efforts all belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, a schematic structural diagram of a sodium zirconate continuous acid-dissolving device provided in this embodiment is shown. The continuous acid dissolving device for sodium zirconate comprises a drying device 10, a conveying device 20, an acid dissolving device 30, a tail gas treatment device 40 and a PLC control unit (not shown).
The drying device 10 comprises a filter press 11, a wet-cake silo 12, a doser 13 and a paddle dryer 14.
The wet cake bin 12 is arranged below the filter press 11; the feed inlet of the quantitative feeder 13 is communicated with the discharge outlet at the bottom of the wet cake bin 12, and the feed inlet of the paddle dryer 14 is communicated with the discharge outlet of the quantitative feeder 13.
The acid dissolving device 30 comprises a hydrochloric acid high-level storage tank 31, an acid dissolving transfer stirring tank 32, an electronic flowmeter 33, a manual valve 34, a flow regulating valve 35, a first acid dissolving stirring tank 36a, a second acid dissolving stirring tank 36b, a first electronic liquid level meter 37a, a second electronic liquid level meter 37b, a first feed regulating valve 38a, a second feed regulating valve 38b, a first feed liquid conveying pump 39a and a second feed liquid conveying pump 39b.
The acid-soluble transfer stirring tank 32 comprises a solid feeding hole and a liquid feeding hole, and the solid feeding hole is communicated with a discharging hole of the auger conveyor 31.
A discharge port at the bottom end of the hydrochloric acid high-level storage tank 31 is communicated with the liquid feed port of the acid dissolution transfer stirring tank 32 through a pipeline, and the height above the ground of the discharge port of the hydrochloric acid high-level storage tank 31 is higher than the height above the ground of the liquid feed port of the acid dissolution transfer stirring tank 32. The electronic flow meter 33 is disposed on a pipeline between the hydrochloric acid high-level storage tank 31 and the acid-soluble transfer stirring tank 32.
The manual valve 34 is disposed on a pipeline between the hydrochloric acid high-level tank 31 and the electronic flow meter 33, and the flow control valve 35 is disposed on a pipeline between the electronic flow meter 33 and the acid-soluble intermediate stirring tank 32. The manual valve 34 is used for cutting off materials when equipment fails. The flow rate adjusting valve 35 is used to adjust the flow rate of the hydrochloric acid solution flowing into the acid-soluble intermediary agitating tank 32.
The feed inlets of the first acid-soluble stirring tank 36a and the second acid-soluble stirring tank 36b are respectively communicated with the discharge outlet arranged at the upper half part of the acid-soluble transfer stirring tank 32 through pipelines, and the height above the ground of the feed inlets of the first acid-soluble stirring tank 36a and the height above the ground of the feed inlets of the second acid-soluble stirring tank 36b are both lower than the height above the ground of the discharge outlet of the acid-soluble transfer stirring tank 32.
The first electronic liquid level meter 37a and the second electronic liquid level meter 37b are respectively arranged on the first acid-soluble stirring tank 36a and the second acid-soluble stirring tank 36b, and are used for monitoring the liquid level height of the feed liquid in the first acid-soluble stirring tank 36a and the second acid-soluble stirring tank 36b in real time.
The first feed regulating valve 38a and the second feed regulating valve 38b are respectively disposed at the feed inlets of the first acid-soluble stirring tank 36a and the second acid-soluble stirring tank 36b, and are used for controlling the on and off of the feeding of the first acid-soluble stirring tank 36a and the second acid-soluble stirring tank 36b.
The first feed liquid conveying pump 39a and the second feed liquid conveying pump 39b are respectively communicated with the discharge ports at the bottom ends of the first acid-soluble stirring tank 36a and the second acid-soluble stirring tank 36b, and are used for conveying the acid-soluble feed liquid to the next processing procedure.
The tail gas treatment device 40 comprises a cyclone 41, a fan 42, a water collecting tank 43 and a spray tower 44.
The air inlet of the cyclone 41 is communicated with the air outlet of the paddle dryer 14 through a pipe.
The collecting water tank 43 is arranged at the bottom end of the cyclone dust collector 41, and the bottom end of the cyclone dust collector 41 is immersed below the liquid level; the pipe between the cyclone 41 and the paddle dryer 14 is provided with a branch pipe 41a, the end of which is submerged below the liquid level of the collection sump 43.
An air inlet of the fan 42 is communicated with an air outlet of the cyclone dust collector 41 through a pipeline, an air inlet of the spray tower 44 is communicated with an air outlet of the fan 42 through a pipeline, and an air outlet of the spray tower 44 is communicated with the atmosphere.
The control unit is electrically connected with the electronic flow meter 33, the flow regulating valve 35, the first electronic liquid level meter 37a, the second electronic liquid level meter 37b, the first feeding regulating valve 38a and the second feeding regulating valve 38b respectively.
The action flow of the sodium zirconate continuous drying and acid dissolving device provided by the embodiment is as follows:
and (3) drying process: and the sodium zirconate aqueous suspension produced in the previous step enters the filter press 11 for filter pressing, a wet filter cake is transferred to the wet cake bin 12 after the filter pressing is finished, the quantitative feeder 13 positioned at the bottom of the wet cake bin 12 continuously and quantitatively feeds materials into the continuous dryer 14, and the sodium zirconate materials are dried by the continuous dryer 14 and then are discharged from a discharge port.
Conveying the sodium zirconate solid material: the auger conveyor 21 communicated with the discharge port of the continuous dryer 14 continuously and quantitatively conveys the dried sodium zirconate materials to the acid-soluble transfer stirring tank 32.
Acid dissolution flow: the PLC control unit calculates the addition amount of hydrochloric acid according to the test data of the electronic flow meter 33, adjusts the flow control valve, precisely, continuously, and quantitatively adds a hydrochloric acid solution into the acid-soluble transfer stirring tank 32 according to the raw material ratio, and after the sodium zirconate material and the hydrochloric acid solution are primarily mixed in the acid-soluble transfer stirring tank 32, the sodium zirconate material and the hydrochloric acid solution overflow from a discharge port formed in the upper half portion of the acid-soluble transfer tank 32 and flow into the first acid-soluble stirring tank 36a or the second acid-soluble stirring tank 36b. When the feeding is started, the PLC control unit controls the first feeding valve 38a to be opened, the first acid-soluble agitation tank 36a starts feeding, the first electronic liquid level meter 37a detects the liquid level in the first acid-soluble agitation tank 36a, and when the liquid level reaches a set height, the PLC control unit controls the first feeding valve 38a to be closed, and at the same time, the second feeding adjustment valve 38b is opened, and the second acid-soluble agitation tank 36b starts feeding. When the second acid-soluble stirring tank 36b is fed, the first acid-soluble stirring tank 36a is continuously stirred and dissolved, and the dissolved feed liquid is transferred to the next step by the first feed liquid transfer pump 39 a. When the first acid-soluble stirring tank 36a is emptied of the feed liquid, and the feed liquid in the second acid-soluble stirring tank 36b reaches the set height, the PLC control unit controls the second feed regulating valve 38b to close, and opens the first feed valve 38a at the same time, and the first acid-soluble stirring tank 36a starts to feed. Thus realizing continuous production in a reciprocating way.
Tail gas treatment process: when the paddle dryer 14 starts to operate, the fan 42 starts to draw air simultaneously, a micro negative pressure environment is formed in the cyclone 41, gas (water vapor) generated in the paddle dryer 14 is sucked into the cyclone 41 through a pipeline, the cyclone 41 separates sodium zirconate dust in the tail gas and collects the sodium zirconate dust in the collecting water tank 43 at the bottom, and water condensed and separated in the pipeline between the cyclone 41 and the continuous dryer 14 flows into the collecting water tank 43 from the branch pipeline 41 a. And the gas extracted from the cyclone 41 by the fan 42 enters a spray tower 44, and the spray tower 44 further removes dust from the tail gas and finally discharges the tail gas into the atmosphere.
The utility model provides a pair of continuous acid-soluble device of sodium zirconate carries out the drying to the sodium zirconate filter cake, reduces sodium zirconate filter cake moisture content and improves acid-soluble efficiency to application automatically controlled technology quantitative control measurement reaction practices thrift the reactant raw materials, realizes continuous production automated control.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, to those skilled in the art, changes and modifications may be made without departing from the spirit of the invention, and it is intended that the invention also encompass such changes and modifications.
Claims (10)
1. A continuous drying and acid dissolving device for sodium zirconate is characterized in that:
comprises a drying device, a conveying device and an acid dissolving device;
the drying device comprises a filter press, a wet cake bin, a quantitative feeder and a continuous dryer; the wet cake bin is arranged below the filter press; a feed port of the quantitative feeder is communicated with a discharge port at the bottom of the wet cake bin; the feed inlet of the continuous dryer is communicated with the discharge port of the quantitative feeder;
the conveying device comprises a screw conveyor; the feed inlet of the spiral conveyor is communicated with the discharge outlet of the continuous dryer;
the acid dissolving device comprises a hydrochloric acid high-level liquid storage tank, an acid dissolving transfer stirring tank and a plurality of acid dissolving stirring tanks; the acid-soluble transfer stirring tank comprises a solid feeding hole and a liquid feeding hole; a solid feeding hole of the acid-soluble transfer stirring tank is communicated with a discharging hole of the screw conveyor; a discharge hole of the hydrochloric acid high-position storage tank is communicated with a liquid feed hole of the acid dissolution transfer stirring tank through a pipeline, and the ground clearance of the discharge hole of the hydrochloric acid high-position storage tank is higher than that of the liquid feed hole of the acid dissolution transfer stirring tank; the feed inlet of the acid-soluble stirring tank is communicated with the discharge outlet arranged at the upper half part of the acid-soluble transfer stirring tank through a pipeline, and the height above the ground of the feed inlet of the acid-soluble stirring tank is lower than that of the discharge outlet of the acid-soluble transfer stirring tank; the acid-soluble stirring tank further comprises a feeding valve arranged on the feeding hole and a feed liquid conveying pump communicated with the discharging hole at the bottom end.
2. The sodium zirconate continuous drying acid-dissolving device according to claim 1, wherein: the system also comprises an electronic flowmeter arranged on a pipeline between the hydrochloric acid high-level storage tank and the acid dissolution transfer stirring tank.
3. The sodium zirconate continuous drying acid dissolving device according to claim 2, characterized in that: the manual valve is arranged on a pipeline between the hydrochloric acid high-level storage tank and the electronic flowmeter, and the flow regulating valve is arranged on a pipeline between the electronic flowmeter and the acid dissolution transfer stirring tank.
4. The sodium zirconate continuous drying acid dissolving device according to claim 3, characterized in that: the acid-soluble stirring tank is characterized by also comprising an electronic liquid level meter arranged on the acid-soluble stirring tank.
5. The sodium zirconate continuous drying acid dissolving device according to claim 4, wherein: the feeding valve is a feeding regulating valve.
6. The sodium zirconate continuous drying acid dissolving device according to claim 5, wherein: the electronic liquid level meter is characterized by further comprising a control unit, wherein the control unit is electrically connected with the electronic flow meter, the flow regulating valve, the electronic liquid level meter and the feeding regulating valve respectively.
7. The sodium zirconate continuous drying acid dissolving device according to claim 1, wherein:
the tail gas treatment device comprises a cyclone dust collector, a fan and a water collecting tank;
the air inlet of the cyclone dust collector is communicated with the air outlet of the continuous dryer through a pipeline;
the air inlet of the fan is communicated with the air outlet of the cyclone dust collector through a pipeline;
the water collecting tank is arranged at the bottom end of the cyclone dust collector, and the bottom end of the cyclone dust collector is immersed below the liquid level;
and a branch pipeline is arranged on a pipeline between the cyclone dust collector and the continuous dryer, and the tail end of the branch pipeline is immersed below the liquid level of the collecting water tank.
8. The sodium zirconate continuous drying acid dissolving device according to claim 7, wherein: the tail gas treatment device further comprises a spray tower, wherein a gas inlet of the spray tower is communicated with a gas outlet of the fan through a pipeline, and a gas outlet of the spray tower is communicated with the atmospheric environment.
9. The sodium zirconate continuous drying acid dissolving device according to claim 1, wherein: the continuous dryer is a paddle dryer, and the screw conveyor is a packing auger conveyor.
10. The sodium zirconate continuous drying acid dissolving device according to claim 6, characterized in that: the control unit is a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221958839.2U CN218077285U (en) | 2022-07-26 | 2022-07-26 | Continuous drying and acid dissolving device for sodium zirconate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221958839.2U CN218077285U (en) | 2022-07-26 | 2022-07-26 | Continuous drying and acid dissolving device for sodium zirconate |
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| Publication Number | Publication Date |
|---|---|
| CN218077285U true CN218077285U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221958839.2U Active CN218077285U (en) | 2022-07-26 | 2022-07-26 | Continuous drying and acid dissolving device for sodium zirconate |
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| Country | Link |
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| CN (1) | CN218077285U (en) |
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2022
- 2022-07-26 CN CN202221958839.2U patent/CN218077285U/en active Active
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