CN217103099U - Preparation system for optimizing external seed crystal index - Google Patents
Preparation system for optimizing external seed crystal index Download PDFInfo
- Publication number
- CN217103099U CN217103099U CN202123334696.6U CN202123334696U CN217103099U CN 217103099 U CN217103099 U CN 217103099U CN 202123334696 U CN202123334696 U CN 202123334696U CN 217103099 U CN217103099 U CN 217103099U
- Authority
- CN
- China
- Prior art keywords
- heater
- seed crystal
- titanium
- preheater
- titanium liquid
- 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.)
- Active
Links
Images
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The utility model discloses a preparation system that plus seed crystal index was optimized belongs to titanium white powder preparation technical field, has solved among the traditional art titanium alkali ratio lower, the problem that titanium white powder quality remains to be improved, and it includes titanium liquid pre-heater, titanium liquid pre-heater is connected with alkali lye pre-heater and seed crystal preparation groove, the seed crystal preparation groove is connected with the hydrolysis tank, titanium liquid pre-heater, alkali lye pre-heater, hydrolysis tank, be connected with steam washing system, the titanium liquid pre-heater is connected the hydrolysis tank has realized improving the stability of hydrolysis seed crystal, and control alkali titanium compares and finished product quality's technological effect.
Description
Technical Field
The utility model belongs to the technical field of titanium white powder preparation, concretely relates to preparation system that plus seed crystal index was optimized.
Background
The hydrolysis of concentrated titanium solution is a key technology for titanium dioxide production, titanyl sulfate in the concentrated titanium solution is hydrolyzed at high temperature to generate metatitanic acid, and for pigment-grade titanium dioxide, the quality of a titanium dioxide finished product depends on the particle size and the particle size distribution of the titanium dioxide to a great extent. The washing quality can be influenced by the particle size and distribution of metatitanic acid particles, and the filter cloth is easily blocked due to the excessively small particle size, so that the washing is difficult; in addition, the yield is reduced because the washing percolation is large due to the over-small particle size and the loss amount of metatitanic acid is increased; the fine metatitanic acid particles can cause easy sintering during calcination, thereby affecting the quality of the product. The particle size distribution of metatitanic acid should be concentrated as much as possible, otherwise, the whiteness of titanium dioxide is reduced, and the product performance is seriously influenced.
The seed crystal adding method is to add seed crystals before hydrolyzing titanium liquid to induce the growth of metatitanic acid crystals, so that the hydrolysis rate can be improved, the alert particle size can be better controlled, and the particle size distribution is more concentrated. Since the hydrolysis seed crystal serves as a growth center of metatitanic acid, the activity and amount of the seed crystal have a great influence on the rate of thermal hydrolysis, the hydrolysis rate, the recovery rate, the particle size of metatitanic acid, the average particle size of the final product, and the decolorization power. In order to adjust the particle size and the particle size distribution of the hydrolyzed metatitanic acid, the preparation process of the hydrolyzed seed crystal needs to be strictly controlled, and the shape of the seed crystal is planned to be controlled from the alkali-titanium ratio of the seed crystal, the preheating temperature of alkali liquor and titanium liquor and the stability of the seed crystal. In addition, the hydrolysis process needs to be optimized to control the growth condition of the crystal, and mainly comprises preheating temperature and first-boiling and second-boiling temperature rise time.
Aiming at the problems of low titanium alkali ratio and low titanium dioxide quality to be improved in the prior art, a preparation system and a preparation method capable of improving the stability of hydrolysis crystal seeds and controlling the alkali-titanium ratio and the quality of finished products are needed.
SUMMERY OF THE UTILITY MODEL
To the problem that titanium-base ratio is lower among the prior art, titanium white powder quality remains to be improved, the utility model provides a preparation system that plus seed crystal index is optimized, its aim at: the stability of the hydrolysis crystal seed is improved, and the alkali-titanium ratio and the quality of the finished product are controlled.
The utility model adopts the technical scheme as follows:
the utility model provides a preparation system of plus seed crystal index optimization, includes titanium liquid pre-heater, alkali lye pre-heater, seed crystal preparation groove and hydrolysis tank, titanium liquid pre-heater and alkali lye pre-heater are connected with seed crystal preparation groove respectively, seed crystal preparation groove and titanium liquid pre-heater all are connected with the hydrolysis tank, titanium liquid pre-heater, hydrolysis tank all are connected with steam washing system.
By adopting the scheme, the titanium liquid can be heated in a sectional mode through the titanium liquid preheater, when the seed crystal is prepared, the titanium liquid can be heated to 85 ℃, when the seed crystal is prepared, the titanium liquid can be heated to 96 ℃ when the seed crystal is hydrolyzed, the hydrolysis efficiency can be effectively improved through the scheme, and the energy conservation and consumption reduction in the chemical production are realized through the mode of preheating the titanium liquid.
Still include the hot water preheater, the hot water preheater is connected the groove of hydrolysising and steam washing system.
By adopting the scheme, hot water in the hot water preheater can be introduced into the hydrolysis tank, the hydrolysis temperature of the hydrolysis tank can be adjusted, and the reaction temperature in the hydrolysis process can be flexibly adjusted through the structure.
The device also comprises a saturated steam pipe, wherein the saturated steam pipe is connected with the titanium liquid preheater, the alkali liquor preheater, the hot water preheater and the seed crystal preparation tank.
Through this kind of scheme, can be through the steam in the saturated steam pipe also too preheater, alkali lye preheater, hot water preheater and seed crystal preparation groove heat, provide the heat source of each heating device.
The steam washing system comprises a cyclone washer, wherein an air inlet of the cyclone washer is connected with the hot water preheater, the titanium liquid preheater and the hydrolysis tank, an air outlet of the cyclone washer is connected with a re-blocking demister, and the re-blocking demister is connected with a tail gas fan.
By adopting the scheme, through the steam washing system, the multi-stage filtration can be carried out after the reaction gas of each device is collected, and finally, the harmless gas is discharged, so that the pollution-free discharge of the gas is realized.
The alkali liquor preheater is connected with an alkali liquor configuration groove.
By adopting the scheme, the alkali liquor can be prepared by an alkali liquor preparation operation, and the prepared alkali liquor is introduced into the alkali liquor preheater for preheating.
The hot water preheater is connected with a sand filter.
By adopting the scheme, impurities introduced into the water in the hot water preheater can be filtered, chemical reactions outside the hydrolysis reaction generated when other metal ions enter the hydrolysis tank are avoided, and the quality of titanium dioxide finished products can be improved.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. can be through titanium liquid preheater with the sectional type heating of titanium liquid, when carrying out the seed crystal preparation, can heat the titanium liquid to 85 ℃, accomplish at the seed crystal preparation, when hydrolysising, can heat the titanium liquid to 96 ℃, through this kind of scheme, can effectively improve hydrolysis efficiency to energy saving and consumption reduction in the chemical production has been realized through the mode of preheating to the titanium liquid.
2. The hot water in the accessible hot water preheater lets in the groove of hydrolysising, adjusts the hydrolysis temperature in the groove of hydrolysising, through this kind of structure, can adjust the reaction temperature among the hydrolysis process in a flexible way.
3. The heat source of each heating device can be provided by heating the steam-para-xylene preheater, the alkali liquor preheater, the hot water preheater and the seed crystal preparation tank in the saturated steam pipe.
4. Through the steam washing system, the multi-stage filtration can be carried out after the reaction gas of each device is collected, and finally, harmless gas is discharged, so that pollution-free discharge of the gas is realized.
5. Can carry out alkali lye allotment through alkali lye configuration operation to let in the alkali lye that mixes in the alkali lye preheater and preheat.
6. Impurities introduced into the water in the hot water preheater can be filtered, chemical reactions outside the hydrolysis reaction generated when other metal ions enter the hydrolysis tank are avoided, and the quality of titanium dioxide finished products can be improved.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic flow chart of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1.
The first embodiment is as follows:
the utility model provides a preparation system that plus seed crystal index was optimized, includes titanium liquid preheater, alkali lye preheater, seed crystal preparation groove and hydrolysis tank, titanium liquid preheater and alkali lye preheater are connected with seed crystal preparation groove respectively, seed crystal preparation groove and titanium liquid preheater all are connected with the hydrolysis tank, titanium liquid preheater, hydrolysis tank all are connected with steam washing system, steam washing system includes the whirl scrubber, the air inlet of whirl scrubber is connected hot water preheater, titanium industry preheater and hydrolysis tank, gas outlet are connected with the duplicate and keep off the demister, the duplicate keeps off the demister and is connected with the tail gas fan, hot water preheater is connected with the sand filter.
Still include the hot water preheater, the hot water preheater is connected the groove of hydrolysising and steam washing system.
The device also comprises a saturated steam pipe, wherein the saturated steam pipe is connected with the titanium liquid preheater, the alkali liquor preheater, the hot water preheater and the seed crystal preparation tank.
The alkali liquor preheater is connected with an alkali liquor configuration groove.
The hot water preheater is connected with a sand filter.
In the above embodiment, the titanium liquid is introduced into the titanium liquid preheater, wherein the titanium liquid preheater preheats the titanium liquid to 80 ℃ within 40 minutes and then prevents the titanium liquid from being in the seed crystal preparation tank, wherein the titanium liquid at 80 ℃ is used for preparing the seed crystal, meanwhile, the preheating temperature in the alkali liquid preheater needs to be kept at a constant temperature of 90 ℃, and then the preheated alkali liquid is discharged into the seed crystal preparation tank to prepare the hydrolysis seed crystal, at this time, the temperature in the seed crystal preparation tank is raised to 85 ℃ within 5 minutes.
In the seed crystal preparation process, the titanium liquid preheater is continuously heated, the heating rate is controlled to be 20 minutes, the temperature is raised to 96 ℃, after the heating is finished, the hydrolysis seed crystal in the seed crystal preparation tank and the titanium liquid heated to 96 ℃ are discharged into the hydrolysis tank together to start hydrolysis, through the system and the preparation method, the alkali-titanium ratio of the seed crystal preparation can be ensured to be 1.75, the addition of the seed crystal is 2.2%, the particle size of metatitanic acid is reduced to 0.3-0.4 μm from 0.35-0.5 μm in the traditional technology, the particle size distribution is narrower, in addition, the abstinence can reach 96.7-97.1%, the average abstinence is improved by 0.3%, and the blue light whiteness of a titanium dioxide finished product is stabilized at 94.7.
The devices needing heating in the application are heated by steam, and the heating method leads the steam into each heating device through a saturated steam pipe.
In this embodiment, who that the hydrolysis tank needs provides through hot water preheater is connected with sand filtration tower at hot water preheater's front end, and wherein sand filtration tower can carry out the filtration to water through his natural quartz sand, manganese sand and anthracite, adopts pressure type sand filtration in this embodiment, and the sand grain diameter is 0.5-1.2mm, and uneven coefficient is 2. The water filtered by the sand does not contain redundant metal elements such as iron ions and the like, so that redundant chemical reaction can be prevented after the water is introduced into the hydrolysis tank.
The hot water preheater, the hydrolysis tank and the titanium liquid preheater are connected with a cyclone scrubber, the cyclone scrubber can filter and wash waste gas discharged in the reaction to remove pollutants in the waste gas, the waste gas is discharged into the secondary foam remover after primary filtration, the waste gas containing liquid foam discharged into the secondary foam remover spirally rises along a wake-up channel between baffles, the liquid foam is thrown to the baffles under the action of inertial centrifugal force and is precipitated along the baffles after colliding with a disc, a lower foam discharge pipe is used for removing the waste gas, the gas subjected to foam removal by the wake-up operation knife is discharged by an upper exhaust pipe, and the removed clean gas is discharged through a tail gas fan at the rear end.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (4)
1. The utility model provides a preparation system of plus seed crystal index optimization, its characterized in that, includes titanium liquid pre-heater, alkali lye pre-heater, seed crystal preparation groove and hydrolysis tank, titanium liquid pre-heater and alkali lye pre-heater are connected with seed crystal preparation groove respectively, seed crystal preparation groove and titanium liquid pre-heater all are connected with the hydrolysis tank, titanium liquid pre-heater, hydrolysis tank all are connected with steam washing system, steam washing system includes the whirl scrubber, hot water pre-heater, titanium liquid pre-heater and hydrolysis tank are connected to the air inlet of whirl scrubber, and the gas outlet is connected with the foam killer that restores to the throne, the foam killer that restores to the throne is connected with the tail gas fan, the pre-heater has sand filter.
2. The system of claim 1, further comprising a hot water preheater, wherein the hot water preheater connects the hydrolysis tank to a steam scrubbing system.
3. The system of claim 1, further comprising a saturation steam pipe connected to the ti liquor preheater, the lye preheater, the hot water preheater and the seed crystal preparation tank.
4. The system of claim 1, wherein the lye preheater is connected to a lye configuration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123334696.6U CN217103099U (en) | 2021-12-28 | 2021-12-28 | Preparation system for optimizing external seed crystal index |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123334696.6U CN217103099U (en) | 2021-12-28 | 2021-12-28 | Preparation system for optimizing external seed crystal index |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217103099U true CN217103099U (en) | 2022-08-02 |
Family
ID=82592914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123334696.6U Active CN217103099U (en) | 2021-12-28 | 2021-12-28 | Preparation system for optimizing external seed crystal index |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217103099U (en) |
-
2021
- 2021-12-28 CN CN202123334696.6U patent/CN217103099U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106477611B (en) | A kind of method for preparing precipitated calcium carbonate using carbide slag and flue solid/liquid/gas reactions | |
| CN111468103B (en) | Method for recycling waste SCR denitration catalyst to prepare new SCR denitration catalyst | |
| CN103846112A (en) | Method for regenerating denitration catalyst by utilizing waste SCR (Selective Catalytic Reduction) catalyst recovery liquid | |
| CN105969991A (en) | Method for extracting titanium, vanadium and tungsten metallic oxide from failed SCR catalyst | |
| CN210528729U (en) | Stainless steel acid-mixed waste liquid sludge harmless treatment system | |
| CN110117722A (en) | Vanadium titanium tungsten system denitrating catalyst resource utilization and water circulation utilization system and method | |
| CN110407249A (en) | A kind of method that discarded honeycomb type denitrification catalyst prepares titanium dioxide | |
| CN105152205B (en) | Method and device for recycling Ti and V from waste flue gas denitrification catalyst | |
| CN110386611A (en) | The system and method for continuous production battery-level lithium carbonate | |
| CN217103099U (en) | Preparation system for optimizing external seed crystal index | |
| CN215711825U (en) | Nano zinc oxide apparatus for producing based on resource utilization | |
| CN114314653A (en) | Preparation system and method for additional seed crystal index optimization | |
| CN106565460B (en) | A method of producing calcium gluconate | |
| CN108910955A (en) | A method of titanium tungsten powder is manufactured using discarded SCR denitration | |
| CN105600758B (en) | A kind of wet refining process for purifying selenium | |
| CN103936050A (en) | Pollution-free processing method and system for tailings generated by chlorination-process titanium extraction | |
| CN110314515A (en) | The processing system and processing method of silicon powder residue in a kind of production of trichlorosilane | |
| JPS63315519A (en) | Method for recovering waste liquor from acid cleaning of steel | |
| CN110015686A (en) | Titanium slag recycles the method for titanium dioxide and the method from denitrating catalyst recycling tungsten, titanium and vanadium | |
| CN112028081A (en) | Device and method for comprehensively recycling and treating phosphogypsum by using plasma | |
| CN112142103A (en) | Method for producing titanium dioxide by using waste denitration catalyst based on alkali dissolution method | |
| CN103395914B (en) | Recycling method of glutamic acid crystalloblastic mother liquor | |
| CN111017963A (en) | Recovery device and method for sodium sulfate in white carbon black production process | |
| CN220899910U (en) | Comprehensive utilization system for spray water of tail gas of sulfuric acid process titanium dioxide calcination | |
| CN112047349B (en) | One-step pyrolysis preparation of gas-phase SiO by fluosilicic acid 2 And recovering HF |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |