CN212050574U - Vanadium-removing slurry treatment device - Google Patents
Vanadium-removing slurry treatment device Download PDFInfo
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- CN212050574U CN212050574U CN202020680451.5U CN202020680451U CN212050574U CN 212050574 U CN212050574 U CN 212050574U CN 202020680451 U CN202020680451 U CN 202020680451U CN 212050574 U CN212050574 U CN 212050574U
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Abstract
The utility model discloses a vanadium removing slurry treatment device, which belongs to the technical field of titanium tetrachloride production. The vanadium removing slurry treatment device comprises a cyclone dust collector and a gravity dust collector which are arranged in series, wherein a vanadium removing slurry port is formed in the gravity dust collector, a nozzle is arranged at the slurry inlet port, and the nozzle is used for spraying vanadium removing slurry into the gravity dust collector. The utility model discloses a set up the cyclone and the gravity dust collector that the series connection combines simultaneously, accessible cyclone carries out cyclone to the dust in the chlorination furnace flue gas earlier, then lets in the heat that utilizes the chlorination furnace flue gas among the gravity dust collector again and realizes removing the evaporation separation of vanadium mud, and then realizes separation and direct recycle to removing titanium tetrachloride and solid impurity in the vanadium mud, has avoided the pollution problem of dust in the chlorination furnace flue gas to the vanadium sediment.
Description
Technical Field
The utility model relates to a titanium tetrachloride production technical field especially relates to a remove vanadium mud processing apparatus and adopt this processing apparatus remove vanadium mud processing technology.
Background
In the production process of the fine titanium tetrachloride, aluminum powder or fatty acid is used for removing impurities in the crude titanium tetrachloride to obtain the fine titanium tetrachloride, and the impurities enter vanadium removal slurry. The vanadium-removing mud contains about 5 to 10 mass percent of solids and the balance of titanium tetrachloride liquid. In the traditional process, an ore pulp evaporation furnace is adopted to treat vanadium-removing slurry, the vanadium-removing slurry is injected into a crucible of the ore pulp evaporation furnace, power is supplied for heating, titanium tetrachloride is evaporated and condensed for recycling, and vanadium slag is formed after solid impurities are enriched; the mass ratio of the vanadium element in the vanadium slag is generally between 15 and 20 percent, so the vanadium content of the vanadium slag has higher quality and can be used as a raw material for extracting vanadium in downstream procedures so as to achieve the aim of recycling. Although the mode of evaporation recovery by using the ore pulp evaporation furnace can treat vanadium-removing slurry and recover titanium tetrachloride, a large amount of electric energy is consumed as an evaporation heat source, so that the cost is high.
In recent years, the vanadium removal slurry is directly returned to a dust collector of a chlorination process, the heat of the flue gas of a chlorination furnace is utilized to separate solid impurities in the vanadium removal slurry, and liquid titanium tetrachloride is evaporated into a gas state and enters the next process for recovery. However, in the process, the vanadium slag produced by the vanadium removal slurry is directly mixed with dust in the flue gas of the chlorination furnace, so that the vanadium content of the dust collecting slag is reduced, the value of continuous utilization is lost, and the recovery and utilization of vanadium in solid impurities in the vanadium removal slurry cannot be achieved.
In addition, there is also reported a process of spraying a circulating bath slurry on a flue gas pipe at the outlet of a chlorination furnace. However, the process only considers the separation of the solid impurities in the slurry and the recovery of titanium tetrachloride, and the subsequent recycling condition of vanadium in the solid impurities in the vanadium-removing slurry is not considered.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: provided is a vanadium removal slurry treatment device which can reduce energy consumption, can realize the separation of titanium tetrachloride and solid impurities in vanadium removal slurry, and can directly recycle the separated titanium tetrachloride and solid impurities.
The utility model provides a technical scheme that its technical problem adopted is: vanadium removing mud processing apparatus, including cyclone and gravity dust collector, have first air inlet port, first air-out port and first dirt port on cyclone, have into mud port, second air inlet port, second air-out port and second dirt port on gravity dust collector, first air inlet port is used for with chlorination furnace flue gas pipeline intercommunication in order to supply with chlorination furnace flue gas to cyclone, first air outlet port and second air inlet port intercommunication, advance mud port and vanadium removing mud supply line intercommunication in order to supply with vanadium removing mud to gravity dust collector to be provided with the nozzle at the mud inlet port department, the nozzle is used for spraying vanadium removing mud to gravity dust collector in.
Further, the method comprises the following steps: the nozzle is used for supplying vanadium removal slurry to the gravity dust collector in a spraying state.
Further, the method comprises the following steps: the nozzle is a spiral nozzle.
Further, the method comprises the following steps: the first air inlet port is positioned on the side of the upper part of the cyclone dust collector, the first air outlet port is positioned at the top end of the cyclone dust collector, and the first dust outlet port is positioned at the bottom end of the cyclone dust collector; the inlet mud port is located at the top end of the gravity dust collector, vanadium-removing mud is sprayed into the gravity dust collector from top to bottom, the second inlet air port is located on the side of the gravity dust collector, the second outlet air port is located on the side of the gravity dust collector, and the second outlet dust port is located at the bottom end of the gravity dust collector.
Further, the method comprises the following steps: the gravity dust collector comprises an upper cylindrical barrel and a lower conical barrel, and the second air inlet port and the second air outlet port are both arranged on the peripheral side wall of the cylindrical barrel; in the height direction of the gravity dust collector, the second air inlet port is positioned above the second air outlet port, and the second air inlet port and the second air outlet port are respectively arranged on two opposite sides of the gravity dust collector.
Further, the method comprises the following steps: still include the condenser, second air-out port and condenser intercommunication.
In addition, the utility model also provides a vanadium removing slurry treatment process, and by adopting the vanadium removing slurry treatment device, the first air inlet port is communicated with the flue gas pipeline of the chlorination furnace, and the slurry inlet port is communicated with the vanadium removing slurry supply pipeline; the vanadium removing slurry treatment process comprises the following steps:
the method comprises the following steps that chloridizing furnace flue gas enters a cyclone dust collector from a first air inlet port to be subjected to cyclone dust collection, and dust in the chloridizing furnace flue gas is collected to the bottom in the cyclone dust collector and can be discharged through a first dust outlet port;
the chlorination furnace flue gas after cyclone dust removal is discharged from a first air outlet port and enters a gravity dust collector through a second air inlet port, and vanadium-removing slurry sprayed into the gravity dust collector through a nozzle at a slurry inlet port is contacted with the gravity dust collector to transfer heat so as to evaporate titanium tetrachloride liquid components in the vanadium-removing slurry into titanium tetrachloride gas;
titanium tetrachloride gas formed by evaporation and chlorination furnace flue gas are discharged from a second air outlet;
solid impurities in the vanadium-removing slurry are enriched into vanadium slag at the bottom of the gravity dust collector, and the enriched vanadium slag can be discharged through the second dust outlet.
Further, the method comprises the following steps: and controlling the temperature of the flue gas at the second air outlet port to be 200-250 ℃ by adjusting the supply amount of vanadium removing slurry.
Further, the method comprises the following steps: the mass ratio of the supply amount of the vanadium-removing slurry to the supply amount of the chlorination furnace flue gas is 5-8%.
Further, the method comprises the following steps: the temperature of the chlorination furnace flue gas entering from the first air inlet port is 450-550 ℃, and the air inlet speed is 15-20 m/s; the speed of vanadium-removing slurry sprayed from a nozzle at the slurry inlet port is 2-3 m/s.
The utility model has the advantages that: remove vanadium mud processing apparatus, cyclone and gravity dust collector through setting up the series connection simultaneously and combining, accessible cyclone carries out cyclone to the dust in the chlorination furnace flue gas earlier, then let in the gravity dust collector again, and utilize the mode that sprays except that vanadium mud, utilize the heat of chlorination furnace flue gas to realize the evaporation separation who removes vanadium mud in the gravity dust collector, the titanium tetrachloride of evaporation is collected along with flue gas discharge back, unevaporated solid impurity is vanadium slag in the bottom enrichment of gravity dust collector, and then realize separation and recycle to titanium tetrachloride and solid impurity in removing vanadium mud. Meanwhile, the waste heat of the flue gas of the chlorination furnace is directly utilized, so that the condition of additional energy consumption is avoided, and compared with the traditional ore pulp evaporation furnace treatment mode, the energy consumption condition can be effectively reduced. Additionally, the utility model discloses because the dust in the chlorination furnace flue gas is collected by cyclone separation, consequently can not cause the pollution to the vanadium sediment of gravity dust collector bottom enrichment, and then can guarantee the vanadium content of the vanadium sediment of enrichment, can directly regard as follow-up raw materials to the recycle of vanadium resource in the vanadium sediment. In addition, the treatment process for vanadium removal slurry of the utility model is adopted, so that the separation of titanium tetrachloride and solid impurities in the vanadium removal slurry and the respective recycling of the separated titanium tetrachloride and solid impurities are realized; and moreover, the flue gas of the chlorination furnace and the vanadium removal slurry are regulated and controlled, so that effective evaporation and separation of titanium tetrachloride liquid components in the vanadium removal slurry are ensured, and energy can be saved to the maximum extent.
Drawings
FIG. 1 is a schematic view of the connection relationship of the vanadium removing slurry treatment device according to the present invention;
labeled as: the dust collector comprises a cyclone dust collector 1, a gravity dust collector 2, a first air inlet port 3, a first air outlet port 4, a first dust outlet port 5, a slurry inlet port 6, a second air inlet port 7, a second air outlet port 8, a second dust outlet port 9, a nozzle 10, an upper cylindrical barrel 11, a lower conical barrel 12 and a condenser 13.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1, vanadium removal mud processing apparatus, including cyclone 1 and gravity dust collector 2, first air inlet port 3, first air outlet port 4 and first dirt port 5 have on cyclone 1, have into mud port 6, second air inlet port 7, second air outlet port 8 and second dirt port 9 on gravity dust collector 2, first air inlet port 3 is used for with chlorinator flue gas pipeline intercommunication in order to supply chlorinator flue gas to cyclone 1, first air outlet port 4 and second air inlet port 7 intercommunication, it supplies to the gravity dust collector 2 in with vanadium removal mud to advance mud port 6 with vanadium removal mud supply line intercommunication to be provided with nozzle 10 in advancing mud port 6 department, nozzle 10 is used for spraying vanadium removal mud to gravity dust collector 2 in.
The cyclone dust collector 1 has the function of separating dust in the flue gas of the chlorination furnace by using a cyclone separation principle, so that the content of the dust in the flue gas supplied to the gravity dust collector 2 after separation is greatly reduced, the dust in the flue gas is prevented from being mixed with solid impurities in vanadium-removing slurry 1 in the gravity dust collector 2 to reduce the content of vanadium elements in deposited vanadium slag, the vanadium-containing quality of the vanadium slag can be ensured, the vanadium content of the vanadium slag can reach 15% -20%, the vanadium slag can be used as an ideal raw material for preparing commercial vanadium in subsequent processes, and the vanadium slag can be directly recycled.
In addition, the gravity dust collector 2 of the utility model has the function of collecting dust by gravity on one hand so as to collect solid matters in gas by gravity; on the other hand, in the utility model discloses in will removing vanadium mud through setting up nozzle 10 and spray to gravity dust collector 2 in, chlorination furnace flue gas through the introduction of second air inlet port 7 simultaneously can realize carrying out quick evaporation to the titanium tetrachloride liquid that removes in the vanadium mud of spraying with the help of chlorination furnace flue gas to the realization removes titanium tetrachloride and solid impurity's quick separation in the vanadium mud.
More preferably, in order to improve the contact heat transfer between the flue gas of the chlorination furnace and the sprayed vanadium removing slurry so as to improve the evaporation effect of the titanium tetrachloride liquid component in the flue gas, the nozzle 10 adopted in the utility model is preferably capable of supplying the vanadium removing slurry into the gravity dust collector 2 in a spraying state; that is, the nozzle 10 is preferably an atomizing nozzle type product, and for example, a spiral nozzle can be specifically used.
In addition, without loss of generality, by combining the structure and cyclone separation principle of the conventional cyclone dust collector 1 and referring to the attached drawing 1, the first air inlet port 3 in the cyclone dust collector 1 in the utility model is positioned at the side of the upper part of the cyclone dust collector 1, the first air outlet port 4 is positioned at the top end of the cyclone dust collector 1, and the first dust outlet port 5 is positioned at the bottom end of the cyclone dust collector 1; and, still can be provided with corresponding on-off valve at first dust outlet port 5 department to open the valve when needing to get rid of the dust of collection and discharge, and when the dust of need not arranging, close the valve.
In addition, for the gravity dust collector 2, in the utility model, for the conventional gravity dust collector 2 is subjected to corresponding structural improvement, specifically referring to fig. 1, in order to locate the slurry inlet port 6 at the top end of the gravity dust collector 2, namely, the top end of the gravity dust collector 2 is provided with a corresponding slurry inlet port 6 for supplying vanadium removal slurry into the gravity dust collector 2, and the vanadium removal slurry is sprayed into the gravity dust collector 2 from top to bottom; for the arrangement of other ports, a second air inlet port 7 can be arranged on the side of the gravity dust collector 2, a second air outlet port 8 is also arranged on the side of the gravity dust collector 2, a second dust outlet port 9 is arranged at the bottom end of the gravity dust collector 2, and a corresponding switch valve can be arranged at the second dust outlet port 9, so that the valve can be opened to discharge when vanadium slag at the bottom in the gravity dust collector 2 needs to be discharged, and the valve can be closed when the vanadium slag does not need to be discharged.
More specifically, the gravity dust collector 2 of the present invention further preferably comprises an upper cylindrical barrel 11 and a lower conical barrel 12; at this time, the second air inlet port 7 and the second air outlet port 8 can be both arranged on the peripheral side wall of the cylindrical barrel 11; in the height direction of the gravity dust collector 2, the second air inlet port 7 is positioned above the second air outlet port 8, and the second air inlet port 7 and the second air outlet port 8 are respectively arranged on two opposite sides of the gravity dust collector 2; such as the positional relationship specifically shown in fig. 1. Therefore, the flue gas entering from the second air inlet port 7 and being discharged from the second air outlet port 8 can be more fully contacted with the sprayed vanadium removal slurry in the gravity dust collector 2 for heat transfer, and the evaporation effect of titanium tetrachloride in the vanadium removal slurry is further improved.
More specifically, the vanadium removing slurry treatment device of the present invention further comprises a condenser 13, and the second air outlet port 8 is communicated with the condenser 13; the flue gas discharged from the second air outlet port 8 can be condensed and cooled by the condenser 13, so that the titanium tetrachloride gas in the flue gas is condensed into liquid and then is recovered in a centralized manner.
The vanadium removing slurry treatment process of the utility model, namely the vanadium removing slurry treatment device of the utility model, introduces the flue gas of the chlorination furnace into the cyclone dust collector 1 by communicating the first air inlet port 3 with the flue gas pipeline of the chlorination furnace, and simultaneously communicates the slurry inlet port 6 with the vanadium removing slurry supply pipeline to introduce the vanadium removing slurry into the gravity dust collector; the specific vanadium-removing slurry treatment process comprises the following steps:
the method comprises the following steps that chloridizing furnace flue gas enters a cyclone dust collector 1 from a first air inlet port 3 for cyclone dust collection, and dust in the chloridizing furnace flue gas is collected to the bottom in the cyclone dust collector 1 and can be discharged through a first dust outlet port 5;
the chlorination furnace flue gas after cyclone dust removal is discharged from a first air outlet port 4 and enters a gravity dust collector 2 through a second air inlet port 7, and vanadium-removing slurry sprayed into the gravity dust collector 2 through a nozzle 10 at a slurry inlet port 6 contacts the gravity dust collector 2 to transfer heat so as to evaporate titanium tetrachloride liquid components in the vanadium-removing slurry into titanium tetrachloride gas;
titanium tetrachloride gas formed by evaporation and chlorination furnace flue gas are discharged from a second air outlet port 8;
solid impurities in the vanadium-removed slurry are enriched into vanadium slag at the bottom of the gravity dust collector 2, and the enriched vanadium slag can be discharged through the second dust outlet 9.
After the treatment, the dust in the chlorination furnace flue gas is separated and collected by the cyclone dust collector 1, so that the dust content in the flue gas discharged from the first dust outlet 5 is extremely low, the pollution to the vanadium slag enriched at the bottom of the gravity dust collector 2 is avoided, the vanadium content of the enriched vanadium slag can be further ensured, and the enriched vanadium slag can be further used as a raw material for recycling the vanadium resource in the vanadium slag. After the flue gas is sent into the gravity dust collector 2, the residual heat of the flue gas is directly utilized to evaporate the titanium tetrachloride liquid in the vanadium removing slurry, and the evaporated titanium tetrachloride gas is discharged from the second air outlet port 8 along with the flue gas, so that the separation of the titanium tetrachloride and the solid impurities in the vanadium removing slurry is realized. Meanwhile, the solid impurities in the vanadium-removing slurry have high vanadium content and are not polluted by dust in the flue gas of the chlorination furnace, so the solid impurities enriched at the bottom of the gravity dust collector 2 form vanadium slag with the vanadium content of 15-20%, and the vanadium slag can be used as an ideal raw material for preparing commodity vanadium in the subsequent process, thereby realizing the recycling of the vanadium slag.
Of course, without loss of generality, in order to further condense and recover titanium tetrachloride gas in the gas discharged from the second air outlet port 8; the gas temperature is further reduced by further arranging a condenser 13 to realize the condensation of the titanium tetrachloride gas, and the condensed liquid titanium tetrachloride is intensively recycled for subsequent storage and recycling.
More specifically, in order to ensure the effective evaporation of the titanium tetrachloride liquid in the vanadium removing slurry, the utility model discloses in further can be in the actual processing process, through adjusting vanadium removing slurry supply volume, control the flue gas temperature of second air outlet 8 department 200 ℃ -250 ℃; namely, the temperature of the flue gas at the second air outlet port 8 is controlled to be used as a control parameter for controlling whether the titanium tetrachloride liquid component in the vanadium removing slurry is fully evaporated.
In addition, for the flue gas of the chlorination furnace, the main components are generally as follows: n in a volume ratio of 10-20%270 to 85 percent of TiCl by volume ratio41-2% of Cl by volume ratio2HCl with the volume ratio of 2-3 percent and CO with the volume ratio of 3-8 percent21-5% of solid impurities by mass; the vanadium-removing mud generally comprises the following main components: the vanadium-removing mud contains about 5 to 10 mass percent of solids and the balance of titanium tetrachloride liquid. Combines the technological parameters of the chlorination furnace flue gas and removes vanadiumThe technological parameter of mud to the supply quantity of the two, the utility model discloses in further preferred setting for remove the quality ratio of vanadium mud supply quantity and chlorination furnace flue gas supply quantity be 5% ~ 8%, concrete then can combine to carry out reasonable setting for 200 ℃ -250 ℃ the control requirement to the flue gas temperature of 8 departments of second air-out port.
Without loss of generality, combine chlorination furnace flue gas parameter when first air inlet port 3 gets into, the utility model discloses well preferred following specific technological parameter setting: the temperature is controlled to be 450-550 ℃, and the air inlet speed is controlled to be 15-20 m/s. After the flue gas is subjected to cyclone separation of the cyclone dust collector 1, the temperature of the flue gas discharged to the second air inlet port 7 is reduced to 350-450 ℃ approximately due to the natural temperature reduction effect of the wall of the cyclone dust collector. Therefore, the temperature parameter is controlled to ensure effective vaporization and separation of the titanium tetrachloride liquid component in the vanadium removal slurry.
More specifically, in order to ensure the spraying effect of the vanadium removing slurry after entering the gravity dust collector 2, the speed of the vanadium removing slurry sprayed from the nozzle 10 at the slurry inlet port 6 is preferably set to be 2 m/s-3 m/s.
Claims (6)
1. Remove vanadium mud processing apparatus, its characterized in that: comprises a cyclone dust collector (1) and a gravity dust collector (2), wherein the cyclone dust collector (1) is provided with a first air inlet port (3), a first air outlet port (4) and a first dust outlet port (5), the gravity dust collector (2) is provided with a mud inlet port (6), a second air inlet port (7), a second air outlet port (8) and a second dust outlet port (9), the first air inlet port (3) is communicated with a flue gas pipeline of the chlorination furnace to supply the flue gas of the chlorination furnace into the cyclone dust collector (1), the first air outlet port (4) is communicated with the second air inlet port (7), the slurry inlet port (6) is communicated with a vanadium removing slurry supply pipeline to supply vanadium removing slurry into the gravity dust collector (2), and a nozzle (10) is arranged at the slurry inlet (6), and the nozzle (10) is used for spraying vanadium-removing slurry into the gravity dust collector (2).
2. The vanadium removal mud treatment device of claim 1, wherein: the nozzle (10) is used for supplying vanadium removal slurry into the gravity dust collector (2) in a spraying state.
3. The vanadium removal mud treatment device of claim 1, wherein: the nozzle (10) is a spiral nozzle.
4. The vanadium removal mud treatment device of claim 1, wherein: the first air inlet port (3) is positioned on the side of the upper part of the cyclone dust collector (1), the first air outlet port (4) is positioned at the top end of the cyclone dust collector (1), and the first dust outlet port (5) is positioned at the bottom end of the cyclone dust collector (1); advance mud port (6) and be located the top of gravity dust collector (2), remove vanadium mud and adopt from the top to spout into in gravity dust collector (2), second air inlet port (7) are located the side of gravity dust collector (2), second air-out port (8) are located the side of gravity dust collector (2), second goes out dirt port (9) and is located gravity dust collector (2) bottom.
5. The vanadium removal mud treatment device of claim 4, wherein: the gravity dust collector (2) comprises an upper cylindrical barrel (11) and a lower conical barrel (12), and the second air inlet port (7) and the second air outlet port (8) are arranged on the peripheral side wall of the cylindrical barrel (11); in the height direction of the gravity dust collector (2), the second air inlet port (7) is positioned above the second air outlet port (8), and the second air inlet port (7) and the second air outlet port (8) are respectively arranged on two opposite sides of the gravity dust collector (2).
6. The vanadium removal mud treatment apparatus according to any one of claims 1 to 5, wherein: the air conditioner further comprises a condenser (13), and the second air outlet port (8) is communicated with the condenser (13).
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| CN202020680451.5U CN212050574U (en) | 2020-04-28 | 2020-04-28 | Vanadium-removing slurry treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111422900A (en) * | 2020-04-28 | 2020-07-17 | 攀钢集团钛业有限责任公司 | Vanadium-removing slurry treatment device and process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111422900A (en) * | 2020-04-28 | 2020-07-17 | 攀钢集团钛业有限责任公司 | Vanadium-removing slurry treatment device and process |
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