CN104368165A - Two-effect titanium liquid concentration device and process for preheating desalted water - Google Patents
Two-effect titanium liquid concentration device and process for preheating desalted water Download PDFInfo
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- CN104368165A CN104368165A CN201410588414.0A CN201410588414A CN104368165A CN 104368165 A CN104368165 A CN 104368165A CN 201410588414 A CN201410588414 A CN 201410588414A CN 104368165 A CN104368165 A CN 104368165A
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- titanium liquid
- film evaporator
- steam
- thin film
- flash tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a two-effect titanium liquid concentration device and process for preheating desalted water. The concentration device comprises a desalted water preheater, a titanium liquid heater, a flash tank, a film evaporator and an atmospheric condenser, wherein the solution outlet of the titanium liquid heater is connected with the solution inlet of the flash tank, the first solution outlet of the flash tank is connected with the solution outlet of the titanium liquid heater through a circulating pump, the steam outlet of the flash tank is connected with the steam inlet of the preheater, the second solution outlet of the flash tank is connected to the solution inlet of the film evaporator, new saturated steam is introduced to the steam inlet of the film evaporator, the steam outlet of the film evaporator is connected with the steam inlet of the titanium liquid heater, and a vacuum pump is connected to the steam outlet of the condenser. The flow rate of titanium liquid in the titanium liquid heater and the flash tank is controlled through the circulating pump, so that the problems of large-area scaling and blockage of a heat exchange pipe in a heat exchanger due to low flow rate are solved, the total heat transfer coefficient of the heat exchanger is greatly improved, and the heat exchange area of the heat exchanger is reduced.
Description
Technical field
The present invention relates to titanium liquid concentration technique field, specifically titanium liquid two imitates enrichment facility and concentration technology.
Background technology
In the industrial production of sulfuric acid method titanium pigment, need 150g/L(titanium dioxide mass concentration) diluted Ti solution be concentrated into 220g/L, usually adopt the evaporation of single-action climbing film evaporator, this vaporising device steam consumption is higher.Multi-effect evaporating device is adopted to be one of effective way reducing titanium liquid enrichment process steam consumption, Multi-effect concentration commonly two effect vacuum flashings concentrates, in flow process, two effect employings one imitate the indirect steam that flashes off as thermal source, indirect steam temperature is 60 ~ 65 DEG C, because temperature is lower, the heat exchange area of the required heat exchanger of two effects is larger, simultaneously owing to containing a large amount of calcium metal ion in titanium liquid, easily calcium sulfate or gypsum solid sediment is formed in concentration process, be shaped as incrustation scale at heat exchanger tube deposited on silicon, affect heat exchange efficiency.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, and propose a kind of save new saturated vapor and avoid blocking the titanium liquid two that heat exchanger tube improves heat exchanger tube heat exchange efficiency imitate enrichment facility and concentration technology.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of titanium liquid two of pre-hot desalinized water imitates enrichment facility, it is characterized in that: comprise desalted water preheater, titanium liquid heater, flash tank, thin film evaporator and barometric condenser, described desalted water preheater comprises desalted water entrance, desalted water exports, preheater steam inlet and preheater steam (vapor) outlet, described titanium liquid heater comprises titanium liquid heater solution inlet, titanium liquid heater taphole, titanium liquid heater vapor inlet and the outlet of titanium liquid heater steam, described flash tank comprises flash tank solution inlet, flash tank solution first exports, flash tank solution second exports and flash tank steam (vapor) outlet, described thin film evaporator comprises thin film evaporator solution inlet, thin film evaporator taphole, thin film evaporator steam inlet and thin film evaporator steam (vapor) outlet, described barometric condenser comprises condenser first steam inlet, condenser second steam inlet and condenser vapor outlet, described titanium liquid heater taphole is connected with described flash tank solution inlet, described flash tank solution first is exported and is connected with described titanium liquid heater solution inlet by a circulating pump, described flash tank steam (vapor) outlet is connected with described preheater steam inlet, described flash tank solution second outlet is connected to described thin film evaporator solution inlet, new saturated vapor is passed in described thin film evaporator steam inlet, described thin film evaporator steam (vapor) outlet is connected with described titanium liquid heater vapor inlet, described titanium liquid heater steam outlet is connected to described condenser first steam inlet, described condenser second steam inlet connects described preheater steam (vapor) outlet, at described condenser vapor outlet connection one vavuum pump.
Described desalted water preheater, titanium liquid heater all adopt tubular heat exchanger, and described circulating pump is axial-flow type circulating pump, and described thin film evaporator adopts shell and tube thin film evaporator.
The solution inlet upper end of described circulating pump is provided with a high-order reservoir, described thin film evaporator taphole lower end is provided with a dense reservoir.
A kind of titanium liquid two imitates concentration technology, and step is as follows:
Diluted Ti solution enters from high-order hopper the forced-circulation evaporation system be made up of titanium liquid heater, circulating pump and flash tank to carry out circulating and evaporating and concentrates, the thermal source of titanium liquid heater is the indirect steam that thin film evaporator flashes off, titanium liquid mainly relies on circulating pump to promote in the intrasystem circulation of forced-circulation evaporation, the vacuum of flash tank is controlled by vavuum pump and barometric condenser, control titanium liquid at the intrasystem flow velocity of forced-circulation evaporation by circulating pump simultaneously, in order to avoid material produces crystallization or aggravation fouling, blocking heat exchanger tube;
Titanium liquid after forced-circulation evaporation system initial concentration enters thin film evaporator and concentrates further, the thermal source of thin film evaporator is new saturated vapor, the indirect steam that thin film evaporator flashes off passes into desalted water preheater and is used for pre-hot desalinized water, controlled the vacuum of thin film evaporator by vavuum pump and barometric condenser, uncooled indirect steam carries out spray condensation by barometric condenser.
The present invention has the following advantages:
1. adopt forced-circulation evaporation system, the flow velocity of titanium liquid in heat exchanger is controlled by forced circulation pump, avoid the problem causing the fouling of heat exchanger tube large area and blocking in heat exchanger because flow velocity is lower, and increase substantially the overall heat-transfer coefficient of heat exchanger, reduce the heat exchange area of heat exchanger.
2. barometric condenser and vavuum pump composition vacuum system, the indirect steam that flash separation tank flashes off adds hot desalinized water through preheater, the titanium liquid that the indirect steam that thin film evaporator flashes off circulates as the heat source of forced-circulation evaporation system.The uncooled indirect steam of the further condensation of vacuum system, controls the vacuum in thin film evaporator and flash separation tank.
3. take full advantage of the latent heat of indirect steam, alleviate the burden of vacuum system, can save new saturated vapor about 37%, and flow process is shorter, easily controls, equipment is few, and cost is low.
Accompanying drawing explanation
Fig. 1 is the connection diagram of apparatus of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is elaborated:
As shown in Figure 1, the titanium liquid two of the pre-hot desalinized water of the present invention imitates enrichment facility, comprises high-order hopper 1, circulating pump 2, titanium liquid heater 3, flash tank 4, thin film evaporator 5, dense reservoir 6, desalted water preheater 7, barometric condenser 8, vavuum pump 8 and fluid-tight pond 10.Concentration technology is as follows: diluted Ti solution enters forced-circulation evaporation system from high-order hopper 1, forced-circulation evaporation system is made up of titanium liquid heater 3, circulating pump 2, circulating line, flash tank 4, the thermal source of titanium liquid heater is the indirect steam that thin film evaporator 5 flashes off, and titanium liquid mainly relies on circulating pump 2 to force to promote in the intrasystem circulation of forced-circulation evaporation.Material parts after initial concentration enters thin film evaporator 5 and concentrates further, the thermal source of thin film evaporator 5 is new saturated vapor, thin film evaporator dodges 5 indirect steams that are steamed out and passes into desalted water preheater 7 and be used for pre-hot desalinized water, in flow process, need to control thin film evaporator 5, the vacuum of flash tank 4 and the temperature of titanium liquid, control titanium liquid at the intrasystem flow velocity of circulating and evaporating simultaneously, in order to avoid material produces crystallization or aggravation fouling, blocking heat exchanger tube.The vacuum of system is formed by vavuum pump 9 and barometric condenser 8, and uncooled indirect steam carries out spray condensation by barometric condenser, is controlled the vacuum of thin film evaporator and flash separation tank by throttling respectively.
Claims (4)
1. the titanium liquid two of a pre-hot desalinized water imitates enrichment facility, it is characterized in that: comprise desalted water preheater, titanium liquid heater, flash tank, thin film evaporator and barometric condenser, described desalted water preheater comprises desalted water entrance, desalted water exports, preheater steam inlet and preheater steam (vapor) outlet, described titanium liquid heater comprises titanium liquid heater solution inlet, titanium liquid heater taphole, titanium liquid heater vapor inlet and the outlet of titanium liquid heater steam, described flash tank comprises flash tank solution inlet, flash tank solution first exports, flash tank solution second exports and flash tank steam (vapor) outlet, described thin film evaporator comprises thin film evaporator solution inlet, thin film evaporator taphole, thin film evaporator steam inlet and thin film evaporator steam (vapor) outlet, described barometric condenser comprises condenser first steam inlet, condenser second steam inlet and condenser vapor outlet, described titanium liquid heater taphole is connected with described flash tank solution inlet, described flash tank solution first is exported and is connected with described titanium liquid heater solution inlet by a circulating pump, described flash tank steam (vapor) outlet is connected with described preheater steam inlet, described flash tank solution second outlet is connected to described thin film evaporator solution inlet, new saturated vapor is passed in described thin film evaporator steam inlet, described thin film evaporator steam (vapor) outlet is connected with described titanium liquid heater vapor inlet, described titanium liquid heater steam outlet is connected to described condenser first steam inlet, described condenser second steam inlet connects described preheater steam (vapor) outlet, at described condenser vapor outlet connection one vavuum pump.
2. titanium liquid two according to claim 1 imitates enrichment facility, it is characterized in that: described desalted water preheater, titanium liquid heater all adopt tubular heat exchanger, and described circulating pump is axial-flow type circulating pump, and described thin film evaporator adopts shell and tube thin film evaporator.
3. titanium liquid two according to claim 1 and 2 imitates enrichment facility, it is characterized in that: the solution inlet upper end of described circulating pump is provided with a high-order reservoir, and described thin film evaporator taphole lower end is provided with a dense reservoir.
4. imitate a concentration technology for enrichment facility based on titanium liquid two described in claim 1, it is characterized in that:
Diluted Ti solution enters from high-order hopper the forced-circulation evaporation system be made up of titanium liquid heater, circulating pump and flash tank to carry out circulating and evaporating and concentrates, the thermal source of titanium liquid heater is the indirect steam that thin film evaporator flashes off, titanium liquid mainly relies on circulating pump to promote in the intrasystem circulation of forced-circulation evaporation, the vacuum of flash tank is controlled by vavuum pump and barometric condenser, control titanium liquid at the intrasystem flow velocity of forced-circulation evaporation by circulating pump simultaneously, in order to avoid material produces crystallization or aggravation fouling, blocking heat exchanger tube;
Titanium liquid after forced-circulation evaporation system initial concentration enters thin film evaporator and concentrates further, the thermal source of thin film evaporator is new saturated vapor, the indirect steam that thin film evaporator flashes off passes into desalted water preheater and is used for pre-hot desalinized water, controlled the vacuum of thin film evaporator by vavuum pump and barometric condenser, uncooled indirect steam carries out spray condensation by barometric condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410588414.0A CN104368165A (en) | 2014-10-28 | 2014-10-28 | Two-effect titanium liquid concentration device and process for preheating desalted water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410588414.0A CN104368165A (en) | 2014-10-28 | 2014-10-28 | Two-effect titanium liquid concentration device and process for preheating desalted water |
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| CN104368165A true CN104368165A (en) | 2015-02-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944399A (en) * | 2016-06-21 | 2016-09-21 | 淄博市博山万通机械厂 | Concentration method of sulfuric-acid-process titanium dioxide titanium solution and concentration device of concentration method |
| CN106957066A (en) * | 2016-08-30 | 2017-07-18 | 襄阳龙蟒钛业有限公司 | A kind of titanium dioxide preparation method and device for concentrating titanium liquid |
| CN110393936A (en) * | 2019-07-15 | 2019-11-01 | 湖南三茵生态农业发展有限公司 | Corn pulp drying system |
| CN112607772A (en) * | 2020-12-24 | 2021-04-06 | 中国石油化工股份有限公司 | Method for extracting high-purity titanium dioxide from olefin polymerization industrial waste acid residues |
| CN112807722A (en) * | 2021-01-04 | 2021-05-18 | 中石化上海工程有限公司 | Continuous cascade thin film evaporator system |
-
2014
- 2014-10-28 CN CN201410588414.0A patent/CN104368165A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944399A (en) * | 2016-06-21 | 2016-09-21 | 淄博市博山万通机械厂 | Concentration method of sulfuric-acid-process titanium dioxide titanium solution and concentration device of concentration method |
| CN106957066A (en) * | 2016-08-30 | 2017-07-18 | 襄阳龙蟒钛业有限公司 | A kind of titanium dioxide preparation method and device for concentrating titanium liquid |
| CN110393936A (en) * | 2019-07-15 | 2019-11-01 | 湖南三茵生态农业发展有限公司 | Corn pulp drying system |
| CN112607772A (en) * | 2020-12-24 | 2021-04-06 | 中国石油化工股份有限公司 | Method for extracting high-purity titanium dioxide from olefin polymerization industrial waste acid residues |
| CN112607772B (en) * | 2020-12-24 | 2023-07-04 | 中国石油化工股份有限公司 | Method for extracting high-purity titanium dioxide from olefin polymerization industrial waste acid residues |
| CN112807722A (en) * | 2021-01-04 | 2021-05-18 | 中石化上海工程有限公司 | Continuous cascade thin film evaporator system |
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Application publication date: 20150225 |