CN106957066A - A kind of titanium dioxide preparation method and device for concentrating titanium liquid - Google Patents
A kind of titanium dioxide preparation method and device for concentrating titanium liquid Download PDFInfo
- Publication number
- CN106957066A CN106957066A CN201610760344.1A CN201610760344A CN106957066A CN 106957066 A CN106957066 A CN 106957066A CN 201610760344 A CN201610760344 A CN 201610760344A CN 106957066 A CN106957066 A CN 106957066A
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- China
- Prior art keywords
- titanium
- titanium liquid
- preheater
- graphite
- liquid
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
- C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
- C01G23/0534—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts in the presence of seeds
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The present invention relates to titanium dioxide Preparation equipment field, and in particular to a kind of indirect steam recycling prepares the device of Multi-effect concentration titanium liquid, including is disposed with thin film evaporator, preheater, one-level preheater, evaporator, desalination water preheater, mixing condenser.The present invention develops the process for treating surface of graphite-pipe and graphite component, and hole wall is more smooth compared with titanium tube, and less scaling and blocking, the graphite heat exchanger being made is stable, and heat exchange area is big, heat exchange efficiency is high, works well.Meet national energy-saving emission reduction requirement, add the competition survival ability of enterprise.
Description
Technical field
The present invention relates to a kind of titanium dioxide preparation field, particularly a kind of titanium dioxide with the preparation method of concentration titanium liquid and
Device.
Background technology
Energy-saving and emission-reduction and environmental protection be national " 12 " during strategic decision, titanium white production energy consumption is higher, titanium
Liquid enrichment process is one of higher process of energy consumption, energy-conservation of the titanium dioxide industrial technology innovation strategic alliances propulsion titanium powder industry
Emission reduction and environmental protection work are as among heavy.
, need to be by concentration control because being had higher requirements to dense titanium concentration in sulfate process titanium dioxide production automatic growing crystal species hydrolysis process
System is in 220 ± 5g/l, and preceding process production titanium concentration only has 160g/l or so, therefore need to be to titanium liquid concentrate.Current enrichment process
The concentration of titanium liquid is general to have high energy consumption and the low situation of efficiency using single-action liter film heating evaporation enrichment facility.Thin film evaporator-
Mixing condenser system is concentrated to titanium liquid, and indirect steam is cooled down with dirty recirculated water, and heat is unrecovered to be utilized, and the energy disappears
Consumption is higher.
The content of the invention
The present invention goal of the invention be：The problem of existing for prior art concentrates titanium liquid there is provided a kind of titanium dioxide
Preparation method and device.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of indirect steam recycling prepares the device of Multi-effect concentration titanium liquid, it is characterised in that：Steamed including being disposed with film
Send out device, preheater, one-level preheater, evaporator, desalination water preheater, mixing condenser.
Preferably, material used in heat exchanger is graphite.
Further, the present invention also provides a kind of method for producing Multi-effect concentration titanium liquid, it is characterised in that using foregoing
Device.
Preferably, the water temperature in mixing condenser exit is below 65 DEG C.
, need to be by concentration control because being had higher requirements to dense titanium concentration in sulfate process titanium dioxide production automatic growing crystal species hydrolysis process
System is in 220 ± 5g/l, and preceding process production titanium concentration only has 160g/l or so, therefore titanium liquid concentrate need to be adopted in the prior art
Titanium liquid is concentrated with thin film evaporator-mixing condenser system, indirect steam is cooled down with dirty recirculated water, and heat is not returned
Receive and utilize, energy resource consumption is higher.The present invention is using thin film evaporator-preheater-one-level preheater-evaporator-desalted water preheating
Device-mixing condenser system is concentrated to titanium liquid, and titanium liquid is preheated using indirect steam, effectively make use of secondary steaming
Vapour, reduces energy resource consumption.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：Develop graphite-pipe and graphite
The process for treating surface of component, hole wall is more smooth compared with titanium tube, less scaling and blocking, and the graphite heat exchanger operation being made is steady
It is fixed, work well.Meet national energy-saving emission reduction requirement, add the competition survival ability of enterprise.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
Embodiment 1
The device used for：Set gradually：Thin film evaporator, preheater, one-level preheater, evaporator, desalination water preheater,
Mixing condenser.
Idiographic flow is：
Open titanium liquid preheater, primary heater and the emptying of secondary heater shell side and emptying.And switch dense titanium liquid bath overflow
To smart titanium liquid storage tank, water filling meets fluid-tight requirement in condensed water liquid seal trough.Open titanium liquid head tank and enter system diluted Ti solution correspondence electricity
Dynamic control valve, starts overflow to dense titanium liquid liquid seal trough, is then shut off motor-operated control valve and checks each heat exchanger shell pass whether there is titanium liquid
Ooze out, all heat exchanger emptyings and emptying are closed in confirmation after being oozed out without titanium liquid.Inter cooler, big air cooling is opened to drench device feed water valve and open
The vacuum systems such as dynamic water ring vacuum pump, make I and II evaporator negative pressure reach -0.092Mpa（Gauge pressure）More than.Open vacuum tube
Vent valve on road, control secondary evaporimeter vacuum≤78Kpa.Multiple-effect titanium liquid concentration systems feed intake and auxiliary equipment startup work
Terminate, initially enter the operation phase of heat temperature raising and dehydration by evaporation.Due to multiple-effect titanium liquid concentration systems use it is a kind of inverse
To multiple-effect condensation technology flow, concentration titanium liquid temperature degree≤70 DEG C are must assure that in system heating up process, in secondary concentration
Vacuum >=66Kpa（It can be adjusted by control butterfly valve）In the case of, thickening temperature is improved constantly, while TiO2 contents are also continuous
Improve, until 220g/l requirement, but maximum temperature it is necessary≤85 DEG C.
Above steps may be repeated multiple times and is contrasted with being concentrated using single-action, as a result as shown in the table：
Single-action concentration and Multi-effect concentration Comparative result table
Can be seen that former single-action concentration from above experimental data is to use raw steam that mean concentration is dense for 159.8g/l titanium liquid
The titanium liquid that mean concentration is 219.0g/l is reduced to, and Multi-effect concentration is because of the recycling of indirect steam, first with secondary waste gas by smart titanium
Liquid preheating is concentrated into after 180.2g/l or so, is concentrated into titanium liquid mean concentration for 180.2g/l titanium liquid using raw steam
Mean concentration is 219.0g/l titanium liquid；And the dense titanium liquid of 948.21m3 of this time experiment production, dense titanium fluid solid content index≤
Below 40mg/l, finds no early stage hydrolysis phenomena, and dense remaining indices of titanium liquid are also normal, greatly reduce energy damage
Lose.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent and improvement made within refreshing and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of indirect steam recycling prepares the device of Multi-effect concentration titanium liquid, it is characterised in that including what is set gradually：Film
Evaporator, preheater, one-level preheater, evaporator, desalination water preheater, mixing condenser.
2. indirect steam recycling according to claim 1 prepares the device of Multi-effect concentration titanium liquid, it is characterised in that：Heat exchange
Material used in device is graphite.
3. the device that indirect steam recycling according to claim 1 prepares Multi-effect concentration titanium liquid is recycled in indirect steam
Prepare the application in Multi-effect concentration titanium liquid.
4. a kind of method for producing Multi-effect concentration titanium liquid, it is characterised in that：Device described in usage right requirement 1.
5. method according to claim 4, it is characterised in that:The water temperature in the mixing condenser exit 65 DEG C with
Under.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610760344.1A CN106957066A (en) | 2016-08-30 | 2016-08-30 | A kind of titanium dioxide preparation method and device for concentrating titanium liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610760344.1A CN106957066A (en) | 2016-08-30 | 2016-08-30 | A kind of titanium dioxide preparation method and device for concentrating titanium liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106957066A true CN106957066A (en) | 2017-07-18 |
Family
ID=59480907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610760344.1A Pending CN106957066A (en) | 2016-08-30 | 2016-08-30 | A kind of titanium dioxide preparation method and device for concentrating titanium liquid |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463439A (en) * | 2022-09-22 | 2022-12-13 | 北京鑫瑞聚能科技有限公司 | Metatitanic acid cooling and titanium liquid concentration thermal coupling system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225240A (en) * | 2011-05-23 | 2011-10-26 | 南通三圣石墨设备科技股份有限公司 | Concentration method based on combination of titanium liquid film evaporation and multilevel flash evaporation |
| CN203944141U (en) * | 2014-03-23 | 2014-11-19 | 德阳劲达节能科技有限责任公司 | A kind of titanium liquid enrichment facility |
| CN104368165A (en) * | 2014-10-28 | 2015-02-25 | 南通京通石墨设备有限公司 | Two-effect titanium liquid concentration device and process for preheating desalted water |
-
2016
- 2016-08-30 CN CN201610760344.1A patent/CN106957066A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225240A (en) * | 2011-05-23 | 2011-10-26 | 南通三圣石墨设备科技股份有限公司 | Concentration method based on combination of titanium liquid film evaporation and multilevel flash evaporation |
| CN203944141U (en) * | 2014-03-23 | 2014-11-19 | 德阳劲达节能科技有限责任公司 | A kind of titanium liquid enrichment facility |
| CN104368165A (en) * | 2014-10-28 | 2015-02-25 | 南通京通石墨设备有限公司 | Two-effect titanium liquid concentration device and process for preheating desalted water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463439A (en) * | 2022-09-22 | 2022-12-13 | 北京鑫瑞聚能科技有限公司 | Metatitanic acid cooling and titanium liquid concentration thermal coupling system and method |
| CN115463439B (en) * | 2022-09-22 | 2023-11-10 | 北京鑫瑞聚能科技有限公司 | Thermal coupling system and method for cooling meta-titanic acid and concentrating titanium liquid |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170718 |