CN212712783U - Titanium tetrachloride refining production system - Google Patents
Titanium tetrachloride refining production system Download PDFInfo
- Publication number
- CN212712783U CN212712783U CN202021190110.6U CN202021190110U CN212712783U CN 212712783 U CN212712783 U CN 212712783U CN 202021190110 U CN202021190110 U CN 202021190110U CN 212712783 U CN212712783 U CN 212712783U
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- Prior art keywords
- titanium tetrachloride
- flash tank
- outlet
- reboiler
- clear liquid
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- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000007670 refining Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 78
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000010936 titanium Substances 0.000 claims abstract description 53
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 53
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 34
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 27
- 238000004062 sedimentation Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims description 37
- 239000010865 sewage Substances 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 235000010215 titanium dioxide Nutrition 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VZVLQKOGWNLVAC-UHFFFAOYSA-J tetrachlorotitanium vanadium Chemical compound [V].Cl[Ti](Cl)(Cl)Cl VZVLQKOGWNLVAC-UHFFFAOYSA-J 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a titanium tetrachloride refining production system, which comprises a sedimentation separator, a flash tank and a reboiler; a crude titanium tetrachloride inlet of the settling separator is connected with a crude titanium tetrachloride conveying pipeline, and a crude titanium clear liquid outlet is connected with a crude titanium clear liquid inlet of the flash tank; a mixed liquid inlet of the flash tank is connected with an outlet of the reboiler, and a feed liquid outlet is connected with an inlet of the reboiler; the inlet of the reboiler is also connected with a vanadium removal reagent conveying pipeline. The utility model discloses a settlement separator carries out the preliminary treatment to thick titanium tetrachloride, gets rid of solid impurity wherein, has also reduced the quantity that removes the vanadium reagent simultaneously, greatly reduced heating tube bank scale deposit probability, heating tube bank can not the scale deposit more than 24 months of continuous operation to make the long period steady operation of refined production system, improved production efficiency, entire system adopts closed-loop operation moreover, does not produce solid waste, has better environmental benefit and economic benefits.
Description
Technical Field
The utility model belongs to the technical field of titanium white powder production, concretely relates to titanium tetrachloride refining production system.
Background
In the production process of titanium dioxide, a production technology of refining and removing vanadium from crude titanium tetrachloride by using organic matters has the advantages of rich reagent sources, low price, no toxicity and good vanadium removal effect; meanwhile, the operation flow is simple, and continuous operation can be realized. The refining vanadium-removing production technology comprises the steps of adding organic matters and crude titanium tetrachloride (hereinafter referred to as crude titanium) into an evaporator according to a certain proportion, heating feed liquid by high-pressure steam through a heating tube bundle to enable the organic matters and impurities in the titanium tetrachloride to generate a series of chemical reactions, and then carrying out rectification operation to obtain refined titanium tetrachloride (hereinafter referred to as refined titanium); however, viscous residues generated by the reaction of organic matters and the crude titanium and solid-phase impurities in the crude titanium are easy to deposit in the heating tube bundle to form scaling substances, so that the evaporation effect is seriously influenced, and the service life of the titanium tetrachloride vanadium removal refining production system is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a titanium tetrachloride refining production system with long-period operation for solving the defects of the prior art.
The purpose of the utility model is realized by the following technical scheme:
a titanium tetrachloride refining production system comprises a settling separator, a flash tank and a reboiler; the settling separator is provided with a crude titanium tetrachloride inlet, a crude titanium clear liquid outlet and a slurry outlet; the flash tank is provided with a coarse titanium clear liquid inlet, a mixed liquid inlet, a vanadium-removing titanium tetrachloride gas outlet, a sewage outlet and a feed liquid outlet;
a crude titanium tetrachloride inlet of the settling separator is connected with a crude titanium tetrachloride conveying pipeline, and a crude titanium clear liquid outlet is connected with a crude titanium clear liquid inlet of the flash tank and is used for settling and separating crude titanium tetrachloride into crude titanium clear liquid and slurry; discharging the crude titanium clear liquid and conveying the crude titanium clear liquid to the flash tank;
a mixed liquid inlet of the flash tank is connected with an outlet of the reboiler, and a feed liquid outlet is connected with an inlet of the reboiler;
the inlet of the reboiler is also connected with a vanadium removal reagent conveying pipeline;
the reboiler is used for heating the crude titanium clear liquid from the flash tank and the vanadium removal reagent of the vanadium removal reagent conveying pipeline, and then discharging and conveying the heated crude titanium clear liquid and the vanadium removal reagent to the flash tank; the flash tank is used for flash evaporating the crude titanium clear liquid and the vanadium removal reagent to obtain evaporated vanadium-removing titanium tetrachloride gas, discharging the evaporated vanadium-removing titanium tetrachloride gas from the vanadium-removing titanium tetrachloride gas outlet, and discharging the unevaporated crude titanium clear liquid from the feed liquid outlet to convey the unevaporated crude titanium clear liquid to the reboiler.
Preferably, the system also comprises a mud tank which is connected with a mud outlet of the sedimentation separator and a sewage discharge outlet of the flash tank.
Preferably, the system further comprises a mud pump; and a slurry conveying pipeline is arranged between the slurry outlet of the sedimentation separator and the slurry tank, the slurry pump is positioned on the slurry conveying pipeline, and the slurry pump is also connected with a return pipeline which is connected with the end of the slurry conveying pipeline close to the slurry outlet of the sedimentation separator.
Preferably, the sewage treatment device further comprises a sewage pump; and a sewage discharge pipeline is arranged between the sewage discharge outlet of the flash tank and the mud tank, and the sewage discharge pump is positioned on the sewage discharge pipeline.
Preferably, the system further comprises a flash tank circulating pump; a circulating liquid conveying pipeline is arranged between a feed liquid outlet of the flash tank and the reboiler, and the circulating pump of the flash tank is positioned on the circulating liquid conveying pipeline; and the vanadium removal reagent conveying pipeline is connected with a conveying pipeline between a feed liquid outlet of the flash tank and a circulating pump of the flash tank.
Preferably, the device also comprises a rectifying tower which is connected with a vanadium-removing titanium tetrachloride gas outlet of the flash tank.
Preferably, the device further comprises a cooling tower connected with the rectifying tower.
Preferably, the device also comprises a fine titanium storage tank which is connected with the cooling tower.
The utility model provides a titanium tetrachloride refining production system carries out the preliminary treatment to thick titanium tetrachloride through settling the separator, get rid of solid impurity wherein, the quantity that removes vanadium reagent has also been reduced simultaneously, greatly reduced heating tube bank (reboiler) scale deposit probability, heating tube bank can not the scale deposit more than 24 months of continuous operation, thereby make the long periodic steady operation of refining production system, and the production efficiency is improved, and entire system adopts closed loop operation, does not produce solid waste, has better environmental benefit and economic benefits.
Drawings
Fig. 1 is a schematic structural view of a titanium tetrachloride refining production system provided by the present invention.
Wherein, 1, a sedimentation separator; 2 a crude titanium tetrachloride conveying pipeline; 3, a slurry pump; 4, a mud tank; 5 a slurry conveying pipeline; 6, a sewage pump; 7, a flash tank; 8, a rectifying tower; 9 flash tank circulating pump; 10 a reboiler; 11 vanadium removal reagent conveying pipeline; 12 cooling the tower; 13 fine titanium storage tank.
Detailed Description
The titanium tetrachloride refining production system provided by the utility model, as shown in figure 1, comprises a sedimentation separator 1, a flash tank 7 and a reboiler 10; the sedimentation separator 1 is provided with a crude titanium tetrachloride inlet, a crude titanium clear liquid outlet and a slurry outlet; the flash tank 7 is provided with a coarse titanium clear liquid inlet, a mixed liquid inlet, a vanadium-removing titanium tetrachloride gas outlet, a sewage outlet and a feed liquid outlet;
a crude titanium tetrachloride inlet of the settling separator 1 is connected with a crude titanium tetrachloride conveying pipeline 2, a crude titanium clear liquid outlet is connected with a crude titanium clear liquid inlet of the flash tank 7, crude titanium tetrachloride containing various impurities enters the settling separator 1 through the crude titanium tetrachloride conveying pipeline 2, and then the crude titanium tetrachloride is settled and separated into clear liquid and slurry; discharging the crude titanium clear liquid and conveying to a flash tank 7; the slurry of the coarse titanium clear liquid is removed, so that the solid content of the coarse titanium clear liquid is low, the influence on the subsequent refining production is reduced, and the solid content is preferably controlled to be below 0.08%;
a mixed liquid inlet of the flash tank 7 is connected with an outlet of the reboiler 10, and a feed liquid outlet is connected with an inlet of the reboiler 10;
the inlet of the reboiler 10 is also connected with a vanadium removal reagent conveying pipeline 11;
the crude titanium clear liquid separated by the settling separator is firstly conveyed to a flash tank 7 through a crude titanium clear liquid inlet, the crude titanium clear liquid which is not evaporated due to low temperature and pressure cannot be evaporated, the crude titanium clear liquid which is not evaporated is discharged from a feed liquid outlet, then the crude titanium clear liquid and a vanadium removing reagent conveyed by a vanadium removing reagent conveying pipeline enter a reboiler 10 together, high-pressure steam is introduced into a shell layer of the reboiler 10 to heat and pressurize a mixed liquid of the crude titanium clear liquid and the vanadium removing reagent, then the mixed liquid is discharged and enters the flash tank 7 from the mixed liquid inlet, the pressure of the high-temperature and high-pressure mixed liquid is reduced in the flash tank, the crude titanium and the vanadium removing reagent are fully contacted in the flash evaporation process, vanadium in the crude titanium is removed, the obtained titanium tetrachloride gas does not contain vanadium, then the titanium tetrachloride gas is discharged from a vanadium removing titanium tetrachloride gas outlet, part of the crude titanium is not evaporated, the, and circulating the steps and continuing to evaporate. After the flash tank operates for a period of time, the accumulated sludge can be discharged out of the flash tank through a sewage discharge outlet.
To sum up, the utility model discloses at first carry out the preliminary treatment to thick titanium tetrachloride through settling the separator, get rid of solid impurity wherein, also reduced the quantity that removes the vanadium reagent simultaneously, greatly reduced heating tube bank (reboiler) scale deposit probability, heating tube bank can not scale deposit more than 24 months of continuous operation to make the long period steady operation of refined production system, improved production efficiency, entire system adopts closed-loop operation moreover, does not produce solid waste, has better environmental benefit and economic benefits.
Preferably, the sedimentation separator adopts a continuous sedimentation separator, and the automatic regulation of the coarse titanium feeding flow can be realized through a DCS control system.
Preferably, the vanadium removing agent can be selected from animal oleic acid, and the content of the animal oleic acid C18 is required to be more than 65%.
Preferably, the system provided by the utility model also comprises a mud tank 4, which is connected with the mud outlet of the sedimentation separator 1 and the drain outlet of the flash tank 7. The mud tank 4 is provided to facilitate storage of the mud separated from the settling separator and the sludge discharged from the flash tank.
Preferably, the system provided by the utility model also comprises a mud pump 3; a slurry conveying pipeline is arranged between the slurry outlet of the sedimentation separator 1 and the slurry tank 4, the slurry pump 3 is positioned on the slurry conveying pipeline, and the slurry pump 3 is also connected with a return pipeline which is connected with the slurry conveying pipeline end close to the slurry outlet of the sedimentation separator 1. Through setting up slush pump 3, be favorable to the transport of mud, set up return line, can stabilize slush pump system pressure on the one hand, on the other hand can erode mud conveying pipeline, prevents that mud from blockking up the pipeline.
Preferably, the system provided by the utility model also comprises a sewage pump 6; a sewage discharge pipeline is arranged between the sewage discharge outlet of the flash tank 7 and the mud tank 4, and the sewage discharge pump 6 is positioned on the sewage discharge pipeline. And the sewage pump 6 is arranged, so that the sludge of the flash tank can be conveyed conveniently.
The slurry tank 4 may be provided with a slurry feed line 5 for feeding the slurry to the chlorination process for recovering titanium tetrachloride in the slurry.
Preferably, the system provided by the utility model also comprises a flash tank circulating pump 9; a circulating liquid conveying pipeline is arranged between a feed liquid outlet of the flash tank and the reboiler 10, and a circulating pump 9 of the flash tank is positioned on the circulating liquid conveying pipeline; and the vanadium removal reagent conveying pipeline 11 is connected with a conveying pipeline between a feed liquid outlet of the flash tank 7 and the flash tank circulating pump 9. The feed liquid which is not evaporated in the flash tank is firstly mixed with the vanadium removal reagent and then is conveyed to the reboiler 10 through the flash tank circulating pump 9, so that the contact time of coarse titanium and the vanadium removal reagent is prolonged, the vanadium removal efficiency is improved, and the coarse titanium clear liquid and the vanadium removal reagent can be uniformly mixed by the rotation of the flash tank circulating pump impeller.
Preferably, the system provided by the utility model also comprises a rectifying tower 8 which is connected with the vanadium-removing titanium tetrachloride gas outlet of the flash tank 7. The titanium tetrachloride gas after vanadium removal also contains other impurities, and the high boiling point impurities are removed by rectification in the rectifying tower 8, so that the purity of the titanium tetrachloride gas can be further improved. Further preferably, the system provided by the present invention further comprises a cooling tower 12 connected to the rectifying tower 8. The cooling tower 12 is arranged to cool the titanium tetrachloride gas into liquid, and the refined titanium storage tank 13 connected with the cooling tower 12 is arranged to facilitate the storage of the refined titanium tetrachloride liquid.
As will be appreciated by those skilled in the art, the titanium tetrachloride refining production system provided by the present invention further includes a plurality of connecting lines and control valves that are conventionally provided to facilitate the flow and control of materials between the various components of the system.
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. A titanium tetrachloride refining production system is characterized by comprising a settling separator, a flash tank and a reboiler; the settling separator is provided with a crude titanium tetrachloride inlet, a crude titanium clear liquid outlet and a slurry outlet; the flash tank is provided with a coarse titanium clear liquid inlet, a mixed liquid inlet, a vanadium-removing titanium tetrachloride gas outlet, a sewage outlet and a feed liquid outlet;
a crude titanium tetrachloride inlet of the settling separator is connected with a crude titanium tetrachloride conveying pipeline, and a crude titanium clear liquid outlet is connected with a crude titanium clear liquid inlet of the flash tank and is used for settling and separating crude titanium tetrachloride into crude titanium clear liquid and slurry; discharging the crude titanium clear liquid and conveying the crude titanium clear liquid to the flash tank;
a mixed liquid inlet of the flash tank is connected with an outlet of the reboiler, and a feed liquid outlet is connected with an inlet of the reboiler;
the inlet of the reboiler is also connected with a vanadium removal reagent conveying pipeline;
the reboiler is used for heating the crude titanium clear liquid from the flash tank and the vanadium removal reagent of the vanadium removal reagent conveying pipeline, and then discharging and conveying the heated crude titanium clear liquid and the vanadium removal reagent to the flash tank; the flash tank is used for flash evaporating the crude titanium clear liquid and the vanadium removal reagent to obtain evaporated vanadium-removing titanium tetrachloride gas, discharging the evaporated vanadium-removing titanium tetrachloride gas from the vanadium-removing titanium tetrachloride gas outlet, and discharging the unevaporated crude titanium clear liquid from the feed liquid outlet to convey the unevaporated crude titanium clear liquid to the reboiler.
2. The titanium tetrachloride refining production system according to claim 1,
the device also comprises a mud tank which is connected with the mud outlet of the sedimentation separator and the drain outlet of the flash tank.
3. The titanium tetrachloride refining production system according to claim 2,
the device also comprises a mud pump; and a slurry conveying pipeline is arranged between the slurry outlet of the sedimentation separator and the slurry tank, the slurry pump is positioned on the slurry conveying pipeline, and the slurry pump is also connected with a return pipeline which is connected with the end of the slurry conveying pipeline close to the slurry outlet of the sedimentation separator.
4. The titanium tetrachloride refining production system according to claim 2,
the sewage pump is also included; and a sewage discharge pipeline is arranged between the sewage discharge outlet of the flash tank and the mud tank, and the sewage discharge pump is positioned on the sewage discharge pipeline.
5. The titanium tetrachloride refining production system according to claim 1,
the system also comprises a flash tank circulating pump; a circulating liquid conveying pipeline is arranged between a feed liquid outlet of the flash tank and the reboiler, and the circulating pump of the flash tank is positioned on the circulating liquid conveying pipeline; and the vanadium removal reagent conveying pipeline is connected with a conveying pipeline between a feed liquid outlet of the flash tank and a circulating pump of the flash tank.
6. The titanium tetrachloride refining production system according to claim 1,
the device also comprises a rectifying tower which is connected with the vanadium-removing titanium tetrachloride gas outlet of the flash tank.
7. The titanium tetrachloride refining production system according to claim 6,
the device also comprises a cooling tower which is connected with the rectifying tower.
8. The titanium tetrachloride refining production system according to claim 7,
and the fine titanium storage tank is connected with the cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021190110.6U CN212712783U (en) | 2020-06-23 | 2020-06-23 | Titanium tetrachloride refining production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021190110.6U CN212712783U (en) | 2020-06-23 | 2020-06-23 | Titanium tetrachloride refining production system |
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| Publication Number | Publication Date |
|---|---|
| CN212712783U true CN212712783U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021190110.6U Active CN212712783U (en) | 2020-06-23 | 2020-06-23 | Titanium tetrachloride refining production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115924964A (en) * | 2022-11-24 | 2023-04-07 | 云南国钛金属股份有限公司 | Titanium tetrachloride refining system for recovering waste heat of preheater |
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2020
- 2020-06-23 CN CN202021190110.6U patent/CN212712783U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115924964A (en) * | 2022-11-24 | 2023-04-07 | 云南国钛金属股份有限公司 | Titanium tetrachloride refining system for recovering waste heat of preheater |
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