CN104117219B - Method for concentration and the special purpose device of sulfate process titanium dioxide titanium liquid - Google Patents
Method for concentration and the special purpose device of sulfate process titanium dioxide titanium liquid Download PDFInfo
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- CN104117219B CN104117219B CN201410373043.4A CN201410373043A CN104117219B CN 104117219 B CN104117219 B CN 104117219B CN 201410373043 A CN201410373043 A CN 201410373043A CN 104117219 B CN104117219 B CN 104117219B
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- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 34
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 12
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000010936 titanium Substances 0.000 claims abstract description 47
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 41
- 238000001704 evaporation Methods 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 229910002804 graphite Inorganic materials 0.000 claims description 18
- 239000010439 graphite Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000003595 mist Substances 0.000 claims description 6
- 230000009194 climbing Effects 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 4
- 210000000056 organ Anatomy 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 28
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 10
- 239000004408 titanium dioxide Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 108010009736 Protein Hydrolysates Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of method for concentration and special purpose device of sulfate process titanium dioxide titanium liquid, the indirect steam that clear titanium liquid is produced in evaporating concentration process, after mechanical vapour compressor boosts, heats up, then return to evaporation concentration system, under remain on-0.08MPa of vapo(u)rization system, move. In titanium liquid concentration process of the present invention, can not produce hot-spot, it is concentrated that the stability of dense titanium liquid is better than conventional single-action. Have significantly reduce steam consumption, energy-saving effect significantly, the feature such as titanium liquid good stability.
Description
Technical field
The present invention relates to a kind of method for concentration and special purpose device of sulfate process titanium dioxide titanium liquid.
Background technology
In sulfuric acid method titanium pigment production process, ilmenite and sulfuric acid reaction, process clarification filtration are also isolated the titanium liquid obtaining after ferrous sulfate, because concentration is lower, can not be directly used in hydrolysis and prepare hydrated titanium dioxide (claiming again metatitanic acid). Such diluted Ti solution (claiming again clear titanium liquid), must reach after finite concentration through concentrated, just can enter next step hydrolyzing process.
In diluted Ti solution, mainly contain the solutes such as titanyl sulfate, titanium sulfate, ferrous sulfate, generally can be by the concentrated diluted Ti solution of the method for heating evaporation. Because the boiling point of titanium liquid under atmospheric pressure state is 104-114 DEG C of left and right, and titanium liquid is originally in more than 80 DEG C being hydrolyzed, if high-temperature heating evaporation under atmospheric pressure state, will there is early stage hydrolysis and generate colloidal particles and be suspended in titanium liquid in titanium liquid, cause the difficulty of sedimentation and press filtration, finally affect the Quality and yield of titanium dioxide. For fear of early stage hydrolysis, the concentrated of titanium liquid must be concentrated at low temperature under vacuum state.
At present, titanium powder industry in China still adopts traditional single-action thin film evaporation to concentrate clear titanium liquid substantially. In actual production process, be generally will control titanium liquid temp not higher than 70 DEG C, vacuum need to remain on-more than 0.080MPa, just can obtain the dense titanium liquid of qualified 200g/L. 1 ton of titanium dioxide product of average every production, need to consume the raw steam of 2.0-3.0 ton for titanium liquid is concentrated.
The concentrated comparison of technology of tradition titanium liquid falls behind, and has the following disadvantages:
1, steam consumption is large. Owing to adopting single effect evaporation, evaporate one ton of water and need to consume 1.25-1.5 ton steam;
2, the titanium liquid poor stability after concentrated. To adopt the raw steam of 125-138 DEG C because single-action is concentrated, easily cause the hot-spot of titanium liquid, titanium liquid is hydrolyzed in early days and produces solid phase titanyl sulfate Crystallization Plugging evaporimeter tubulation, and be distributed to titanyl sulfate crystallization meeting in titanium liquid as crystal seed, constantly increase and deposit, causing unnecessary loss to production. Meanwhile, due to the existence of these bad nucleus of crystals, can have a strong impact on the performance of hydrolysate, affect the quality of finished product titanium dioxide;
3, for the concentrated thin film evaporator of titanium liquid, the titanium metal material of employing, price is higher;
4, owing to being that single-action is concentrated, the scale of device is less, can not adapt to the development need that titanium dioxide device maximizes.
Summary of the invention
The object of the present invention is to provide a kind of method for concentration and special purpose device that steam consumption can significantly be reduced, improve the sulfate process titanium dioxide titanium liquid of dense titanium liquid stability.
Technical solution of the present invention is:
A method for concentration for sulfate process titanium dioxide titanium liquid, is characterized in that: the indirect steam that clear titanium liquid is produced in evaporating concentration process, after mechanical vapour compressor boosts, heats up, then return to evaporation concentration system, and under remain on-0.08MPa of vapo(u)rization system, move.
The method for concentration of described sulfate process titanium dioxide titanium liquid, concrete steps are: clear titanium liquid passes through one-level preheater, secondary preheater successively through pump, pre-heating temperature elevation is to critical-temperature, then through circulating pump from entering falling liquid film or rising the heater tube side of film graphite evaporator, evenly enter in the tubulation of heating clamber, evaporate, and enter the separation chamber of evaporimeter, a concentrate part is mixed rear Returning evaporimeter with clear titanium liquid, and a part is sent subsequent processing through dense titanium liquid pump;
The indirect steam that falling liquid film or climbing film evaporator produce enters vapour compression machine after mist separates, by compressor after temperature, pressure improve as thermal source retrieval system, wherein major part is delivered to the heating clamber shell side of falling liquid film or climbing film evaporator, and small part is delivered to secondary preheater; The condensed water that the condensed water that evaporator heating chamber produces and secondary preheater produce all enters the collecting tank that condenses, for the one-level preheating of diluted Ti solution.
The special purpose device of the method for concentration of sulfate process titanium dioxide titanium liquid, comprise one-level preheater, the secondary preheater of series connection, secondary preheater communicates through circulating pump and falling liquid film or the tube side that rises film graphite evaporator, falling liquid film or the concentrated solution outlet that rises the separator of film graphite evaporator are divided into two tunnels, one tunnel is connected with clear titanium liquid input pipe, and another road is connected with the pipeline that is sent to subsequent processing; Falling liquid film or the indirect steam outlet that rises the separator of film graphite evaporator are connected with vapour compression machine after mist separator, and vapour compression machine exports and is divided into two tunnels, and a road and falling liquid film or the tube side that rises film graphite evaporator communicate, and another road is connected with secondary preheater; Falling liquid film or rise the heating clamber condensation-water drain of film graphite evaporator, the condensation-water drain of secondary preheater all communicates with the collecting tank that condenses.
In titanium liquid concentration process of the present invention, can not produce hot-spot, it is concentrated that the stability of dense titanium liquid is better than conventional single-action. Have significantly reduce steam consumption, energy-saving effect significantly, the feature such as titanium liquid good stability.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of one embodiment of the invention.
Detailed description of the invention
A method for concentration for sulfate process titanium dioxide titanium liquid, the indirect steam that clear titanium liquid is produced in evaporating concentration process, after mechanical vapour compressor boosts, heats up, then returns to evaporation concentration system, under remain on-0.08MPa of vapo(u)rization system, moves.
Concrete steps are:
Clear titanium liquid passes through one-level preheater, secondary preheater successively through pump, pre-heating temperature elevation is to critical-temperature, then enter the heater tube side of falling liquid film graphite evaporator from top through circulating pump, evenly enter in the tubulation of heating clamber, under Action of Gravity Field, feed liquid becomes membranaceous decline along inside pipe wall, evaporates, and enters the separation chamber of evaporimeter in bottom. A concentrate part is mixed rear Returning evaporimeter with clear titanium liquid, and a part is sent subsequent processing through dense titanium liquid pump.
The indirect steam that climbing film evaporator produces enters vapour compression machine after mist separates, by compressor after temperature, pressure improve as thermal source retrieval system. Wherein major part is delivered to the heating clamber shell side of falling film evaporator, and small part is delivered to secondary preheater. The condensed water that the condensed water that evaporator heating chamber produces and secondary preheater produce all enters the collecting tank that condenses, for the one-level preheating of diluted Ti solution.
The special purpose device of the method for concentration of described sulfate process titanium dioxide titanium liquid, comprise one-level preheater 1, the secondary preheater 2 of series connection, secondary preheater communicates with the tube side of falling liquid film (or rising film) graphite evaporator 3 through circulating pump, the concentrated solution outlet of the separator 4 of falling liquid film (or rising film) graphite evaporator is divided into two tunnels, one tunnel is connected with clear titanium liquid input pipe 5, and another road is connected with the pipeline 6 that is sent to subsequent processing; The indirect steam outlet of the separator of falling liquid film (or rising film) graphite evaporator is connected with vapour compression machine after mist separator, vapour compression machine outlet is divided into two tunnels, one tunnel and falling liquid film or the tube side that rises film graphite evaporator communicate, and another road is connected with secondary preheater; Falling liquid film or rise the heating clamber condensation-water drain of film graphite evaporator, the condensation-water drain of secondary preheater all communicates with the collecting tank 7 that condenses.
Claims (2)
1. a method for concentration for sulfate process titanium dioxide titanium liquid, is characterized in that: clear titanium liquid is being steamedSend out the indirect steam producing in concentration process, after mechanical vapour compressor boosts, heats up, thenReturn to evaporation concentration system, under remain on-0.08MPa of vapo(u)rization system, move;
Concrete steps are: clear titanium liquid passes through one-level preheater, secondary preheater successively through pump, pre-Heat is warming up to critical-temperature, then through circulating pump from entering falling liquid film or rising adding of film graphite evaporatorHot organ pipe journey, evenly enters in the tubulation of heating clamber, evaporates, and enters dividing of evaporimeterFrom chamber, a concentrate part is mixed rear Returning evaporimeter with clear titanium liquid, and a part is through dense titanium liquid pumpSend subsequent processing;
The indirect steam that falling liquid film or climbing film evaporator produce enters both vapor compression after mist separatesMachine, by compressor after temperature, pressure improve as thermal source retrieval system, wherein most ofThe heating clamber shell side of delivering to falling liquid film or climbing film evaporator, small part is delivered to secondary preheater; EvaporationThe condensed water that the condensed water that device heating clamber produces and secondary preheater produce all enters the collection of condensingTank, for the one-level preheating of diluted Ti solution.
2. the special dress of the method for concentration of a sulfate process titanium dioxide titanium liquid claimed in claim 1Put, it is characterized in that: comprise one-level preheater, the secondary preheater of series connection, secondary preheater warpCirculating pump and falling liquid film or the tube side that rises film graphite evaporator communicate, falling liquid film or rise film graphite evaporatorThe concentrated solution outlet of separator be divided into two tunnels, a road is connected with clear titanium liquid input pipe, another roadBe connected with the pipeline that is sent to subsequent processing; Falling liquid film or rise the secondary of the separator of film graphite evaporatorSteam (vapor) outlet is connected with vapour compression machine after mist separator, and vapour compression machine outlet is divided intoTwo tunnels, a road and falling liquid film or the tube side that rises film graphite evaporator communicate, another road and secondary preheatingDevice connects; Falling liquid film or rise heating clamber condensation-water drain, the secondary preheater of film graphite evaporatorCondensation-water drain all communicates with the collecting tank that condenses.
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| CN201410373043.4A CN104117219B (en) | 2014-08-01 | 2014-08-01 | Method for concentration and the special purpose device of sulfate process titanium dioxide titanium liquid |
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| CN201410373043.4A CN104117219B (en) | 2014-08-01 | 2014-08-01 | Method for concentration and the special purpose device of sulfate process titanium dioxide titanium liquid |
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| CN104117219A CN104117219A (en) | 2014-10-29 |
| CN104117219B true CN104117219B (en) | 2016-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105044282B (en) * | 2015-07-02 | 2017-03-01 | 广西蓝星大华化工有限责任公司 | Degree detection device and method is hydrolyzed in early days in a kind of black titanium liquid acid hemolysis process of titanium white |
| CN105056553A (en) * | 2015-09-06 | 2015-11-18 | 张宝夫 | Forced-circulation evaporator system and operation method thereof |
| CN105536277B (en) * | 2016-03-14 | 2017-11-21 | 许达人 | A kind of evaporating and concentrating process and device of the cellulose solvent NMMO aqueous solution |
| CN105854326A (en) * | 2016-06-21 | 2016-08-17 | 淄博市博山万通机械厂 | Sulfate process titanium dioxide titanium solution dual cycle concentration method and device thereof |
| CN109467247A (en) * | 2018-12-14 | 2019-03-15 | 南通三圣石墨设备科技股份有限公司 | A kind of titanium dioxide acid waste water recycling system and technique |
| CN109692490A (en) * | 2019-01-28 | 2019-04-30 | 何文旭 | Corrosion-resistant falling film evaporator, dilute sulfuric acid concentration systems and its technique and application |
| CN109987669A (en) * | 2019-05-15 | 2019-07-09 | 济南冶金化工设备有限公司 | Ammonia steaming system and ammonia distillation process |
| CN110465107B (en) * | 2019-08-07 | 2023-12-22 | 浙江宣达环境科技股份有限公司 | Concentrating device and method for sulfuric acid process titanium white liquid |
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| US20080187797A1 (en) * | 2006-07-10 | 2008-08-07 | Protonex Technology Corporation | Fuel processor for fuel cell systems |
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| CN104117219A (en) | 2014-10-29 |
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Denomination of invention: Concentration method and dedicated device for titanium dioxide solution produced by sulfuric acid method Granted publication date: 20160511 Pledgee: Bank of Communications Co.,Ltd. Nantong Branch Pledgor: NANTONG SUNSHINE GRAPHITE EQUIPMENT TECHNOLOGY Co.,Ltd. Registration number: Y2024980000877 |
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