CN103466694B - A kind of chloridating gas cooling system - Google Patents
A kind of chloridating gas cooling system Download PDFInfo
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- CN103466694B CN103466694B CN201310360142.4A CN201310360142A CN103466694B CN 103466694 B CN103466694 B CN 103466694B CN 201310360142 A CN201310360142 A CN 201310360142A CN 103466694 B CN103466694 B CN 103466694B
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- gas
- chloridating
- jacketed piping
- pipe
- chlorination furnace
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Abstract
The invention discloses a kind of chloridating gas cooling system, chloridating gas is discharged from chlorination furnace top exit, temperature about 1000 ° of C, enter the cooling of vertical jacket tube road, in vertical jacket tube road, establish 3 ~ 5 nozzles, following current or vertically spray into liquid crude titanium tetrachloride, chloridating gas temperature is made to drop to about 160 ° of C, impurity metal chlorides becomes solid phase from gas phase, isolates solid by the gas-solid separation equipment in downstream, discharges system.Be the water coolant of flowing in the chuck in vertical jacket tube road, for cooling and protection internal pipeline.The device structure that the present invention adopts is simple, and cooling duct inside not easily blocks, and reduces cost of equipment and operating maintenance expense.
Description
Technical field
The present invention relates to chlorination process and produce titanium dioxide technical field, be specially the cooling system that a kind of chlorination furnace for chlorination process generates gas.
Background technology
In Titanium Dioxide Produced by Chloride Procedure is produced, titanium slag and refinery coke react with chlorine in chlorination furnace, and the gas of generation is discharged from chlorination furnace top exit, and temperature about 1000 ° of C, main component is gas phase TiCl
4, vapor phase metal muriate (FeCl
2, FeCl
3, MnCl
2deng), CO, CO
2, N
2deng, by spraying into liquid crude titanium tetrachloride, make high-temp chlorination gas cooling to about 160 ° of C, now gaseous impurities metal chloride becomes solid phase from gas phase, separates from chloridating gas.
The cooling of current chloridating gas is divided into vertical section to cool and horizontal section cooling.
Adopt vertical section cooling time, cooling section adopt carbon steel lining refractory brick heat insulation, inside establish nozzle several, spray into crude titanic chloride along or against air flow line.When using this method, trouble changed by refractory materials, and need segmentation to build by laying bricks or stones, toast, maintenance cost is high.
When adopting horizontal section cooling, cooling section material is carbon steel, outside water spray or be placed on cooling protection in tank, inside establish nozzle several, spray into crude titanic chloride along or against air flow line.When using this method, the metal chloride solids of precipitation is scattered in inner-walls of duct, and fine particle can be taken away by gas, but large particle easily rests in level pipe, blocking pipe, and impact is normally produced, and needs to clear up continually.
Summary of the invention
The object of this invention is to provide a kind of chloridating gas cooling system, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of chloridating gas cooling system, for chloridating gas cooling in chlorination furnace, described chlorination furnace top is provided with the outlet of discharging for chloridating gas in stove, it is characterized in that: at chlorination furnace top exit vertical connection jacketed piping, described jacketed piping is by interior, outer tube is formed, in, between outer tube, space forms chuck, the interior pipe of jacketed piping and chlorination furnace outlet, jacketed piping end is communicated to a gas-solid separation equipment, to be the upper and lower chloridating gas of 1000 ° of C to be expelled in jacketed piping pipe from chlorination furnace top exit temperature, at jacketed piping sidepiece, multiple nozzle be communicated with pipe in jacketed piping is set, in multiple nozzle, first nozzle hot gas flow direction in interior pipe sprays into liquid crude titanium tetrachloride in pipe in jacketed piping, all the other nozzles spray into liquid crude titanium tetrachloride perpendicular to hot gas flow direction in interior pipe in pipe in jacketed piping, in pipe in jacketed piping, spraying into liquid crude titanium tetrachloride by multiple nozzle, to make the chloridating gas temperature passed in interior pipe be down to 160 ° of C upper and lower, in chloridating gas, impurity metal chlorides becomes solid phase from gas phase, solid impurity metal chloride is isolated by the gas-solid separation equipment of jacketed piping end.
Described a kind of chloridating gas cooling system, is characterized in that: the water coolant passing into flowing in the chuck of jacketed piping, for pipe in cooling and protection.
Described a kind of chloridating gas cooling system, it is characterized in that: when in chloridating gas, impurity metal chlorides becomes solid phase from gas phase, the impurity metal chlorides of fine particle is chlorinated gas and takes away to gas-solid separation equipment, and oarse-grained impurity metal chlorides drops in chlorination furnace.
Described a kind of chloridating gas cooling system, is characterized in that: the inner tube material of described jacketed piping is Q345R.
It is upper and lower that chloridating gas can be dropped to 160 ° of C from temperature 1000 ° of C by the present invention, and the device structure of employing is simple, and inside not easily blocks, good operational environment, effectively can reduce cost of equipment and operating maintenance expense.
Advantage of the present invention is:
(1) cooling duct is arranged vertically, and sprays into liquid crude titanium tetrachloride in vertical ducting, and the metal chloride solids of precipitation can not rest in pipeline, and fine particle is taken away by gas, and large particle drops in chlorination furnace, and chloridating gas cooling duct not easily blocks.
(2) in vertical cooling jacket pipeline, 3 ~ 5 nozzles are established, first nozzle is low discharge nozzle, for driving and underload production, crude titanic chloride is sprayed into along hot gas flow direction, the several nozzle in back is used for normal production, sprays into crude titanic chloride, decrease the mutual interference between nozzle perpendicular to air flow line, be conducive to spraying into fully contacting of crude titanic chloride and hot gas flow, improve cooling performance.
(3) chloridating gas cooling adopts jacket pipe, is the water coolant of flowing in chuck, for cooling and protection internal pipeline.Inner tube material is Q345R, does not need lining brick or other treatment measures, and device structure is simple, good operational environment, cost of equipment and maintenance operation expense low.
Accompanying drawing explanation
Fig. 1 is present system structural representation.
Embodiment
As shown in Figure 1.A kind of chloridating gas cooling system, for chloridating gas cooling in chlorination furnace 1, chlorination furnace 1 top is provided with the outlet of discharging for chloridating gas in stove, at chlorination furnace 1 top exit vertical connection jacketed piping 2, jacketed piping 2 is by interior, outer tube is formed, in, between outer tube, space forms chuck, the interior pipe of jacketed piping 2 and chlorination furnace 1 outlet, jacketed piping 2 end is communicated to a gas-solid separation equipment, to be the upper and lower chloridating gas of 1000 ° of C to be expelled in jacketed piping 2 pipe from chlorination furnace 1 top exit temperature, at jacketed piping 2 sidepiece, the nozzle that level Four is communicated with pipe in jacketed piping 2 is set, in four nozzles, first step nozzle 3 is low discharge nozzle, first step nozzle 3 hot gas flow direction in interior pipe sprays into liquid crude titanium tetrachloride in pipe in jacketed piping, second stage nozzle 4, third stage nozzle 5, fourth stage nozzle 6 sprays into liquid crude titanium tetrachloride perpendicular to hot gas flow direction in interior pipe respectively in pipe in jacketed piping 2, in pipe in jacketed piping 2, spraying into liquid crude titanium tetrachloride by level Four nozzle, to make the chloridating gas temperature passed in interior pipe be down to 160 ° of C upper and lower, in chloridating gas, impurity metal chlorides becomes solid phase from gas phase, solid impurity metal chloride is isolated by the gas-solid separation equipment of jacketed piping 2 end.
The water coolant of flowing is passed into, for pipe in cooling and protection in the chuck of jacketed piping 2.
When in chloridating gas, impurity metal chlorides becomes solid phase from gas phase, the impurity metal chlorides of fine particle is chlorinated gas and takes away to gas-solid separation equipment, and oarse-grained impurity metal chlorides drops in chlorination furnace 1.
The inner tube material of jacketed piping 2 is Q345R.
In the present invention, the temperature returned by condensation workshop section is 50 ° of C liquid crude titanium tetrachlorides, by nozzle along spraying into perpendicular to hot gas flow direction, the titanium tetrachloride flow that front several nozzle sprays into is regulated by control valve, the titanium tetrachloride flow that last nozzle sprays into is regulated by control valve according to cooled chloridating gas temperature, and chloridating gas temperature drops to about 160 ° of C from about 1000 ° of C.When stopping spray titanium tetrachloride, opening the valve on nitrogen pipeline, purging and cooling jet.Nozzle material is INCONEL600.
Protection water coolant enters from the bottom of jacketed piping, and discharge from top after forced-flow heat exchange, temperature of cooling water is raised to about 40 ° of C from 30 ° of C.In order to ensure the reliability of water coolant, on alternate source pipeline access cooling water-line, when the normal water coolant used for being at once switched to alternate source pipeline, can not realize emergency.Hot water line is provided with PH meter, detects the pH value of water coolant, illustrate that when pH value reduces cooling pipeline inner sleeve is revealed, acidic medium pollutes water coolant, needs parking maintenance.
Below by 100,000 tons/year of chloride process titanium dioxide devices, content of the present invention is further described.
The temperature returned by condensation workshop section is 50 ° of C liquid crude titanium tetrachlorides, is sprayed into along hot gas flow direction by first step nozzle, and flow is 1 ~ 3m
3/ h, second and third, the titanium tetrachloride flow that sprays into of level Four nozzle regulates by control valve, flow is 10 ~ 15m
3/ h, chloridating gas temperature drops to about 160 ° of C from about 1000 ° of C.When stopping spray titanium tetrachloride, opening the valve on nitrogen pipeline, purging and cooling jet.Nozzle material is INCONEL600.
Pressure is that the water coolant of 0.3MPa enters from the bottom of jacketed piping, and discharge from top after forced-flow heat exchange, temperature of cooling water is raised to about 40 ° of C from 30 ° of C, and cooling water flow is 35m
3/ h.Jacketed piping inner tube material is Q345R, and jacketed piping internal diameter is 950mm, and inner tube diameter is 750mm, is highly 9000mm.In order to ensure the reliability of water coolant, on alternate source pipeline access cooling water-line, when the normal water coolant used for being at once switched to alternate source pipeline, can not realize emergency.Hot water line is provided with PH meter, detects the pH value of water coolant, illustrate that when pH value is less than 7 cooling pipeline inner sleeve is revealed, acidic medium pollutes water coolant, needs parking maintenance.
Claims (4)
1. a chloridating gas cooling system, for chloridating gas cooling in chlorination furnace, described chlorination furnace top is provided with the outlet of discharging for chloridating gas in stove, it is characterized in that: at chlorination furnace top exit vertical connection jacketed piping, described jacketed piping is by interior, outer tube is formed, in, between outer tube, space forms chuck, the interior pipe of jacketed piping and chlorination furnace outlet, jacketed piping end is communicated to a gas-solid separation equipment, temperature is that the chloridating gas of 1000 ° of C to be expelled in jacketed piping pipe from chlorination furnace top exit, at jacketed piping sidepiece, multiple nozzle be communicated with pipe in jacketed piping is set, in multiple nozzle, first nozzle hot gas flow direction in interior pipe sprays into liquid crude titanium tetrachloride in pipe in jacketed piping, all the other nozzles spray into liquid crude titanium tetrachloride perpendicular to hot gas flow direction in interior pipe in pipe in jacketed piping, in pipe in jacketed piping, spraying into liquid crude titanium tetrachloride by multiple nozzle makes the chloridating gas temperature passed in interior pipe be down to 160 ° of C, in chloridating gas, impurity metal chlorides becomes solid phase from gas phase, solid impurity metal chloride is isolated by the gas-solid separation equipment of jacketed piping end.
2. a kind of chloridating gas cooling system according to claim 1, is characterized in that: the water coolant passing into flowing in the chuck of jacketed piping, for pipe in cooling and protection.
3. a kind of chloridating gas cooling system according to claim 1, it is characterized in that: when in chloridating gas, impurity metal chlorides becomes solid phase from gas phase, the impurity metal chlorides of fine particle is chlorinated gas and takes away to gas-solid separation equipment, and oarse-grained impurity metal chlorides drops in chlorination furnace.
4. a kind of chloridating gas cooling system according to claim 1, is characterized in that: the inner tube material of described jacketed piping is Q345R.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310360142.4A CN103466694B (en) | 2013-08-16 | 2013-08-16 | A kind of chloridating gas cooling system |
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| CN201310360142.4A CN103466694B (en) | 2013-08-16 | 2013-08-16 | A kind of chloridating gas cooling system |
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| CN103466694A CN103466694A (en) | 2013-12-25 |
| CN103466694B true CN103466694B (en) | 2015-12-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793237B (en) * | 2018-07-20 | 2020-03-27 | 东华工程科技股份有限公司 | Treatment system and method for high-temperature titanium tetrachloride dust-containing gas |
| CN114212818A (en) * | 2021-12-31 | 2022-03-22 | 宜宾天原海丰和泰有限公司 | Method for clearing blockage of flue gas pipeline of chlorination furnace |
| CN114534643B (en) * | 2022-03-16 | 2022-12-27 | 东华工程科技股份有限公司 | Titanium tetrachloride production system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915833A (en) * | 2006-09-06 | 2007-02-21 | 清华大学 | Oxidation reactor for preparing titanium white through chlorination process, and method |
| CN201190107Y (en) * | 2008-03-04 | 2009-02-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Gathering apparatus of titanic chloride |
| CN101462766A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Technique for cooling titanic chloride burner gas |
| CN202625870U (en) * | 2012-07-02 | 2012-12-26 | 山东巴斯弗钛业有限公司 | Furnace top cooling device for chlorination furnace |
| CN103112888A (en) * | 2013-03-15 | 2013-05-22 | 金川集团股份有限公司 | Titanium tetrachloride production system and method for recycling titanium tetrachloride from slurry |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010001207A (en) * | 2008-05-19 | 2010-01-07 | Toho Titanium Co Ltd | Device and method for manufacturing metal chloride |
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2013
- 2013-08-16 CN CN201310360142.4A patent/CN103466694B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915833A (en) * | 2006-09-06 | 2007-02-21 | 清华大学 | Oxidation reactor for preparing titanium white through chlorination process, and method |
| CN101462766A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Technique for cooling titanic chloride burner gas |
| CN201190107Y (en) * | 2008-03-04 | 2009-02-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Gathering apparatus of titanic chloride |
| CN202625870U (en) * | 2012-07-02 | 2012-12-26 | 山东巴斯弗钛业有限公司 | Furnace top cooling device for chlorination furnace |
| CN103112888A (en) * | 2013-03-15 | 2013-05-22 | 金川集团股份有限公司 | Titanium tetrachloride production system and method for recycling titanium tetrachloride from slurry |
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| CN103466694A (en) | 2013-12-25 |
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Address after: 230088 in the high tech Industrial Development Zone, No. 669, Changjiang West Road, Hefei City, Anhui Province Patentee after: EAST CHINA ENGINEERING SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 230024 No. 70 Wangjiang East Road, Anhui, Hefei Patentee before: EAST CHINA ENGINEERING SCIENCE AND TECHNOLOGY Co.,Ltd. |