CN213375747U - Device for collecting titanium white base material by chlorination process by dry method - Google Patents
Device for collecting titanium white base material by chlorination process by dry method Download PDFInfo
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- CN213375747U CN213375747U CN202021584324.1U CN202021584324U CN213375747U CN 213375747 U CN213375747 U CN 213375747U CN 202021584324 U CN202021584324 U CN 202021584324U CN 213375747 U CN213375747 U CN 213375747U
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- bag filter
- blanking
- cyclone separator
- titanium white
- discharging
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Abstract
The utility model discloses a device for collecting titanium white base material by a chlorination process by a dry method, which comprises a cyclone separator, a bag filter and a nitrogen fluidization system; the cyclone separator is connected with a cooling conduit and a bag filter of the titanium tetrachloride oxidation reactor, the cyclone separator and the bag filter are connected with a blanking main pipe through blanking branch pipes, blanking valves are arranged on the blanking branch pipes and the blanking main pipe, and charge level indicators are arranged in the cyclone separator and the bag filter. The utility model discloses use cyclone and bag filter comprehensively, avoided the mechanical wear of scar removing sand to the filter core, reduced the processing pressure of bag filter again, can prolong the life of bag filter core greatly. But also can ensure the continuous and uniform blanking of the titanium white base material; and the viscous titanium dioxide particles in the pipeline can be fluidized, so that the discharge is smoother, the discharge pipeline is not easy to block, and the running period of the device can be greatly prolonged.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of chlorination process titanium white powder production, concretely relates to device of chlorination process titanium white base material is collected to dry process.
[ background of the invention ]
In the process of preparing titanium dioxide by a chlorination method, an oxidation procedure (oxidation equipment: a titanium tetrachloride oxidation reactor) is used for producing a gas-solid mixture of titanium dioxide base material, chlorine and the like. The traditional process is to separate the gas-solid mixture by using a bag filter. The gas-solid mixture entering the bag filter has high gas velocity, a small amount of scar removing sand is mixed in the gas-solid mixture, the hardness of the scar removing sand is high, and the scar removing sand can impact a filter element of the bag filter in the gas-solid separation process to cause certain mechanical damage to the filter element; in addition, a layer of acidic sticky substance formed by unreacted titanium tetrachloride is adhered to the wall of the filter element, the acidic sticky substance becomes hard at high temperature to form a high-temperature bag filter blocking substance, the filter element is detached and manually cleaned or replaced only by stopping production, time and labor are wasted, the operation period of a system is shortened, and production is delayed.
[ Utility model ] content
The utility model aims to provide a device for collecting titanium white base material by a chlorination method by a dry method for solving the defects of the prior art.
The purpose of the utility model is realized by the following technical scheme:
a device for collecting titanium white base material by a chlorination process by a dry method comprises a cyclone separator, a bag filter and a nitrogen fluidization system; the cyclone separator and the bag filter are respectively provided with a mixed gas inlet, a gas outlet and a material outlet;
a mixed gas inlet of the cyclone separator is connected with a cooling conduit of the titanium tetrachloride oxidation reactor, and a gas outlet of the cyclone separator is connected with a mixed gas inlet of the bag filter;
the material outlets of the cyclone separator and the bag filter are connected with a blanking main pipe through blanking branch pipes, blanking valves are arranged on the blanking branch pipes and the blanking main pipe, and material level meters are arranged in the cyclone separator and the bag filter;
and the discharging branch pipe and the discharging main pipe are connected with the nitrogen fluidization system.
Preferably, the bottom end of the blanking main pipe is connected with a pulping tank.
Preferably, the upper part of the pulping tank is provided with a gas outlet.
Preferably, the nitrogen gas fluidization system includes a plurality of nitrogen gas delivery branch pipes, and is a plurality of nitrogen gas delivery branch pipe evenly arrange in the unloading branch pipe reaches on the unloading house steward, just the unloading valve both ends the unloading branch pipe reaches the unloading house steward all is connected with at least one the nitrogen gas delivery branch pipe.
Preferably, the nitrogen fluidization system further comprises a nitrogen storage tank.
Preferably, the level indicator in the cyclone separator and the blanking valve on the connected blanking branch pipe are arranged in an interlocking manner, and the level indicator in the bag filter and the blanking valve on the connected blanking branch pipe are also arranged in an interlocking manner.
Preferably, the mixed gas inlet and the gas outlet of the bag filter are both provided with pressure transmitters, and the gas outlet of the bag filter is also provided with a temperature sensor.
Preferably, a transfer bin is arranged between the discharging branch pipe and the discharging main pipe, and a tail gas outlet is formed in the upper portion of the transfer bin.
The utility model discloses use cyclone and bag filter multipurposely, titanium white base material is collected to the dry process, has avoided the mechanical wear of scar removing sand to the filter core, has reduced the processing pressure of bag filter again, can prolong the life of bag filter core greatly. Moreover, the material level meters and the blanking valves are arranged, so that the material levels at the bottoms of the cyclone separator and the bag filter can be conveniently adjusted, and continuous and uniform blanking of the titanium white base material is ensured; and a nitrogen fluidization system is arranged, so that viscous titanium dioxide particles in the pipeline can be fluidized, the discharge is smoother, the discharge pipeline is not easy to block, and the operation period of the device can be greatly prolonged.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a device for collecting titanium white base material by a dry method according to the present invention;
FIG. 2 is a schematic structural diagram of an apparatus for dry-collecting titanium white base material by chlorination process according to the preferred embodiment of the present invention;
wherein, 1 the conduit is cooled; 2, a cyclone separator; 3 a cyclone level indicator; 4, connecting a pipeline; 5, cyclone blanking branch pipes; 6, a nitrogen storage tank; 7 nitrogen gas delivery branch pipes; 8, a filter element; 9 a bag filter; 10 bags of filter level indicator; 11 bags of filter material branch pipes; 12 returning to a chlorine pipeline; 13 a blanking header pipe; 14 a stirrer; 15 beating the pulp tank; 16 deionized water pipe; 17 a cyclone blanking valve; 18 bag filter blanking valves; 19 general discharge valve; 20, a transit bin; 21 tail gas outlet.
[ detailed description ] embodiments
The utility model discloses a device for collecting titanium white base material by a chlorination method by a dry method, which comprises a cyclone separator 2 and a bag filter 9; the cyclone separator 2 and the bag filter 9 are respectively provided with a mixed gas inlet, a gas outlet and a material outlet;
a mixed gas inlet of the cyclone separator 2 is connected with a cooling conduit 1 of the titanium tetrachloride oxidation reactor, and a gas outlet is connected with a mixed gas inlet of a bag filter 9 through a connecting pipeline 4; titanium tetrachloride is oxidized into solid titanium dioxide (titanium white base material) at high temperature through a titanium tetrachloride oxidation reactor, a gas-solid mixture of the solid titanium dioxide, scar removing sand, chlorine and the like is cooled to a certain temperature through a cooling conduit, then the mixture firstly enters a cyclone separator for gas-solid separation, and the separated tail gas enters a bag filter for further separation;
the material outlets of the cyclone separator 2 and the bag filter 9 are connected with a blanking header pipe 13 through a blanking branch pipe (specifically, the bottom of the material outlet of the cyclone separator is a cyclone blanking branch pipe 5, the bottom of the material outlet of the bag filter is a bag filtering blanking branch pipe 11), the blanking branch pipe and the blanking header pipe are both provided with blanking valves (specifically, the cyclone blanking branch pipe 5 is provided with a cyclone blanking valve 17, the bag filtering blanking branch pipe 11 is provided with a bag filtering blanking valve 18, the blanking header pipe 13 is provided with a total blanking valve 19), and the cyclone separator and the bag filter are internally provided with material level indicators (specifically, the cyclone separator is internally provided with a cyclone material level indicator 3, and the bag filter is internally provided with a bag filtering material level indicator 10); the cyclone separator and the bag filter are internally provided with material level meters so as to monitor the amount of the solid titanium white base materials collected respectively, the titanium white base materials collected by the cyclone separator and the bag filter are firstly conveyed through respective discharging branch pipes and then collected in a discharging main pipe so as to conveniently adjust the total discharging amount and then conveyed to a pulping tank, and discharging valves are arranged on the discharging branch pipes and the discharging main pipe so as to conveniently control the conveying of the titanium white base materials.
The feeding branch pipes and the feeding main pipe 13 are both connected with a nitrogen fluidization system, and the nitrogen fluidization system can fluidize and convey titanium white base materials in the feeding branch pipes and the feeding main pipe to prevent pipelines from being blocked.
The utility model is provided with the cyclone separator in front of the bag filter, the gas-solid mixture output by the titanium tetrachloride oxidation reactor is firstly treated in the cyclone separator, the cyclone separator does not contain a filter element, the centrifugal force is mainly used for settling solid particles, the trapping efficiency is lower compared with that of a bag filter, but the centrifugal force is used for separating a titanium dioxide base material gas-solid mixture, can settle most of the titanium white base material and all the scar removing sand, does not have the problem that the scar removing sand damages a filter element of the bag filter, transmits the chlorine tail gas of a small amount of residual titanium white base material to the bag filter for further treatment, further separates the small amount of titanium white base material from the chlorine, is collected by the bag filter, because the tail gas entering the bag filter for treatment does not contain the scar removing sand, the mechanical abrasion of the scar removing sand to the filter element 8 is avoided, the treatment pressure of the bag filter is reduced, and the service life of the filter bag of the bag filter can be greatly prolonged. Moreover, the material level meters and the blanking valves are arranged, so that the material levels at the bottoms of the cyclone separator and the bag filter can be conveniently adjusted, and continuous and uniform blanking of the titanium white base material is ensured; and a nitrogen fluidization system is arranged, so that viscous titanium dioxide particles in the pipeline can be fluidized, the discharge is smoother, the discharge pipeline is not easy to block, and the operation period of the device can be greatly prolonged.
Preferably, the material of the inner shell and the filter bag of the cyclone separator is made of special high-temperature-resistant and corrosion-resistant materials, and particularly, the inner shell of the cyclone separator is impacted by scab removing sand and needs to be made of high-strength materials, such as a high-strength metal lining.
Preferably, the bottom end of the blanking header pipe is connected with a pulping tank 15, a stirrer 14 is arranged in the pulping tank, the pulping tank is also connected with a deionized water pipe 16, and deionized water and titanium dioxide base materials in a certain proportion are input for mixing and pulping. Titanium white base material separated from the reaction product of the titanium tetrachloride oxidation reactor usually absorbs a certain amount of chlorine and unreacted titanium tetrachloride, so that the titanium white base material is required to be pulped and dechlorinated and then conveyed to a surface treatment process for coating treatment. And the utility model discloses a nitrogen gas transported substance material consequently has gaseous production in the making beating device, consequently, is equipped with the tail gas export on the upper portion of making beating jar, and the gas discharge reduces tank internal pressure, and the tail gas export can be connected with current tail gas processing system in the production to handle pollutants such as chlorine wherein.
Preferably, the nitrogen fluidization system comprises a plurality of nitrogen conveying branch pipes 7, the nitrogen conveying branch pipes are uniformly arranged on the discharging branch pipes and the discharging main pipe 13, and the discharging branch pipes and the discharging main pipe at two ends of the discharging valve are at least connected with one nitrogen conveying branch pipe, so that the nitrogen fluidization titanium dioxide base materials are arranged at any positions in the discharging branch pipes and the discharging main pipe. Each nitrogen conveying branch pipe is provided with a control valve so as to conveniently control the conveying of nitrogen.
Preferably, the nitrogen fluidisation system further comprises a nitrogen storage tank 6 for feeding nitrogen to each nitrogen delivery manifold.
Preferably, the cyclone blanking valve 17 and the cyclone level indicator 3 are arranged in an interlocking mode, the bag filter blanking valve 18 and the bag filter level indicator 10 are arranged in an interlocking mode, the DCS control system is adopted for controlling, the material level of the cyclone separator and the material level of the bag filter in normal operation are controlled by controlling the opening degree of the blanking valve, the material level of the cyclone separator is controlled to be 30-40%, and the material level of the bag filter 2 is controlled to be 15-20% so as to guarantee continuous and uniform blanking.
Preferably, the mixed gas inlet and the gas outlet of the bag filter are respectively provided with a pressure transmitter so as to monitor the pressure difference change of the mixed gas inlet and the gas outlet, the gas outlet of the bag filter is also provided with a temperature sensor so as to monitor the temperature of the outlet of the bag filter, and the temperature of the mixed gas at the outlet of the bag filter 9 is controlled to be 150-180 ℃.
Preferably, the blanking valve can be a rotary blanking valve (a star-shaped blanking valve) and is provided with a speed regulating device, so that the material flow can be controlled more accurately.
Preferably, as shown in fig. 2, a transfer bin 20 is arranged between the feeding branch pipe and the feeding main pipe. Through setting up the transfer bin, can keep in the titanium white base-material that two kinds of splitter collected, conveniently to the material of beating jar ration transport. Gas is also generated in the transfer chamber, so that the upper part of the transfer chamber can be provided with an exhaust gas outlet 21.
When the system operates, materials at the outlet of the titanium tetrachloride oxidation reactor are cooled by the cooling guide pipe 1 and then are sent into the cyclone separator 2 for gas-solid separation, all scab removing sand and most titanium white base materials in the mixed materials are primarily separated from chlorine, the scab removing sand and the titanium white base materials are obtained at the bottom of the cyclone separator, the material level at the bottom is adjusted to be 35% by the DCS control system, and meanwhile, the nitrogen fluidizing system of the cyclone discharging branch pipe is opened to ensure that material particles in the cyclone discharging branch pipe are fluidized and prevent the blockage. A small part of titanium white base material and chlorine gas enter the bag filter through a cyclone outlet connecting pipeline to be subjected to secondary gas-solid separation, a small amount of titanium white base material is obtained at the bottom of the bag filter, the material level at the bottom is adjusted to be 16% through a DCS control system, meanwhile, a fluidization system at the position of a bag filter discharging branch pipe is started to ensure that material particles in the bag filter discharging branch pipe are fluidized, the blockage of the material particles is prevented, chlorine gas without solid-phase materials returns to a chlorination furnace through a chlorine return pipeline 12 to be subjected to chlorination production, and the internal and external pressure difference and the outlet temperature of the bag filter are transmitted to a host machine through a sensor to. The outlet temperature of the bag filter is controlled to be the best at 160 ℃, materials collected by two separation devices are discharged into the pulping tank through the discharging main pipe, meanwhile, the nitrogen fluidization system of the discharging main pipe is started to ensure fluidization and conveying of material particles in the discharging main pipe and prevent blockage, and the materials are sent to the next procedure for treatment after deionized water with a certain proportion is added into the pulping tank for pulping.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The device for collecting titanium white base material by a chlorination process by a dry method is characterized by comprising a cyclone separator, a bag filter and a nitrogen fluidization system; the cyclone separator and the bag filter are respectively provided with a mixed gas inlet, a gas outlet and a material outlet;
a mixed gas inlet of the cyclone separator is connected with a cooling conduit of the titanium tetrachloride oxidation reactor, and a gas outlet of the cyclone separator is connected with a mixed gas inlet of the bag filter;
the material outlets of the cyclone separator and the bag filter are connected with a blanking main pipe through blanking branch pipes, blanking valves are arranged on the blanking branch pipes and the blanking main pipe, and material level meters are arranged in the cyclone separator and the bag filter;
and the discharging branch pipe and the discharging main pipe are connected with the nitrogen fluidization system.
2. The apparatus for dry collection of titanium white chloride process base stock according to claim 1,
the bottom end of the blanking main pipe is connected with a pulping tank.
3. The apparatus for dry collection of titanium white chloride process base stock according to claim 2,
and the upper part of the pulping tank is provided with a gas outlet.
4. The apparatus for dry collection of titanium white chloride process base stock according to claim 1,
the nitrogen gas fluidization system comprises a plurality of nitrogen gas conveying branch pipes, the nitrogen gas conveying branch pipes are evenly distributed on the discharging branch pipes and the discharging header pipe, the discharging branch pipes and the discharging header pipe are connected with at least one nitrogen gas conveying branch pipe at two ends of the discharging valve.
5. The apparatus for dry collection of titanium white chloride process base stock according to claim 4,
the nitrogen fluidization system also comprises a nitrogen storage tank.
6. The apparatus for dry collection of titanium white chloride process base stock according to claim 1,
the material level meter in the cyclone separator and the blanking valve on the connected blanking branch pipe are arranged in an interlocking way, and the material level meter in the bag filter and the blanking valve on the connected blanking branch pipe are also arranged in an interlocking way.
7. The apparatus for dry collection of titanium white chloride process base stock according to claim 1,
and pressure transmitters are arranged at the mixed gas inlet and the gas outlet of the bag filter, and a temperature sensor is also arranged at the gas outlet of the bag filter.
8. The apparatus for dry collection of titanium white chloride process base stock according to claim 1,
a transfer bin is arranged between the discharging branch pipe and the discharging main pipe, and a tail gas outlet is arranged at the upper part of the transfer bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021584324.1U CN213375747U (en) | 2020-08-04 | 2020-08-04 | Device for collecting titanium white base material by chlorination process by dry method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021584324.1U CN213375747U (en) | 2020-08-04 | 2020-08-04 | Device for collecting titanium white base material by chlorination process by dry method |
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| CN213375747U true CN213375747U (en) | 2021-06-08 |
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| CN202021584324.1U Active CN213375747U (en) | 2020-08-04 | 2020-08-04 | Device for collecting titanium white base material by chlorination process by dry method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573023A (en) * | 2022-03-31 | 2022-06-03 | 龙佰禄丰钛业有限公司 | Recycling method and system of oversize titanium dioxide base material |
| RU2794482C1 (en) * | 2022-08-19 | 2023-04-19 | Общество с ограниченной ответственностью "ТИТАНИУМ" | Reactor for processing titanium-containing raw materials |
-
2020
- 2020-08-04 CN CN202021584324.1U patent/CN213375747U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573023A (en) * | 2022-03-31 | 2022-06-03 | 龙佰禄丰钛业有限公司 | Recycling method and system of oversize titanium dioxide base material |
| RU2794482C1 (en) * | 2022-08-19 | 2023-04-19 | Общество с ограниченной ответственностью "ТИТАНИУМ" | Reactor for processing titanium-containing raw materials |
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