CN107662943B - Titanium white chloride oxidation reactor preventing scaring device - Google Patents
Titanium white chloride oxidation reactor preventing scaring device Download PDFInfo
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- CN107662943B CN107662943B CN201711034496.4A CN201711034496A CN107662943B CN 107662943 B CN107662943 B CN 107662943B CN 201711034496 A CN201711034496 A CN 201711034496A CN 107662943 B CN107662943 B CN 107662943B
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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
- C01G23/07—Producing by vapour phase processes, e.g. halide oxidation
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Abstract
The invention discloses a kind of titanium white chloride oxidation reactor preventing scaring devices, it is related to oxidation reactor preventing scaring field, existing titanium white chloride oxidation reactor is solved by air curtain to prevent in the scheme to scab in furnace, the spout arrangement for forming air curtain is unreasonable, influence chlorine is in pipeline the problem of the effect of anti-scar, the technical solution adopted is that: air curtain room is arranged in tube furnace at connecting flange, the first pores of arranged for interval and the second pores on the inner wall of air curtain room, the opening direction of first pores is perpendicular to tube furnace furnace wall, the opening direction of second pores and tube furnace shaft radial direction are tangent.Chlorine or nitrogen enter air curtain room, form vertical and rotation mixed airflow, swirling eddy in tube furnace shaft inner wall and cover circumferential wall, form comprehensive protection air curtain, the titanium dioxide granule for preventing reaction zone from newly being formed is adhered to wall surface；Uprush has stronger impact force to newborn titanium dioxide granule, and the main titanium dioxide granule newly formed of barrier and wall surface adhere to, prevent from scabbing.
Description
Technical field
The present invention relates to oxidation reactor preventing scaring fields, more particularly to a kind of titanium white chloride oxidation reactor of large size
Preventing scaring device.
Background technique
TiCl4Gas phase oxidation is completed in a very short period of time, and moment releases a large amount of heat, is generated in reaction process
Granularity is minimum and uniform titanium dioxide solid product, the solid product easily deposit to the surface of reactor, then grows up concurrent
Transform into scar layer.It, need to be by strong except scar means remove scar layer in time in order to realize continuous prolonged steady production.
External related titanium tetrachloride gas phase oxidation reactor removes scar, anti-scar technology type multiplicity.According to USP3284159,
DuPont Corporation, into gas phase oxidation reactor, is existed using cold chlorine or inert gas under pressurized condition by porous wall
One layer of masking air curtain is formed in tubular reactor, prevents the bonding of titanium dioxide granule on the reactor wall.Porous wall has centainly
Anti- scar function, but the hole aperture of porous wall is small, quantity more cause processing it is very difficult.British patent BP1208027 is described
Expect the method that film removes scar, load volume added by this method is quite big, and corresponding loss is also larger, it is possible to cause to stop working, make to give birth to
Produce and interrupt, or make the reduction of the initial temperature of titanium tetrachloride and oxygen, influence product quality or energy consumption and increase, increase at
This.
There are also the patents that scar is removed for oxidation reactor, such as patent CN00243616.7 to utilize artificial titanium white for the country
Scar material is sprayed into from burner spray gun, weakens scabbing near titanium tetrachloride nozzle, but the straying quatity of program scar material is big, Yi Yin
Excessive heat loss is played, material mixing temperature is reduced, influences product quality.The patent application of Publication No. CN101279763 is public
A kind of oxidizing process titanium dioxide reactor is opened comprising the air curtain device of sandwich-type is provided with one on the inner wall of interlayer round tube
The group chlorine channel tangent with inner tube wall surface, makes the chlorine entered form the air curtain of rotation, to prevent from scabbing in furnace.But it presss from both sides
Only there are two tangential small-holes in layer, and momentum is larger after chlorine enters reaction zone, is easy to influence the stability of fluid-mixing, in turn
Influence product quality.And in oxidation reactor, at oxygen and titanium tetrachloride hybrid reaction region wall surface, i.e. titanium tetrachloride air inlet
It is to be easiest to be initially formed the position scabbed and grown up, farther out, which will be direct for air curtain offset titanium tetrachloride air inlet ring after ring
Influence the anti-scar effect of reactor.Although in addition, the chlorine for entering main pipeline is uniformly distributed by the presence of equal pressure chamber, due to cutting
Small to air curtain small aperture, quantity is few, and it is anti-in pipeline that chlorine can't be fundamentally influenced whether chlorine is evenly distributed
Scar effect；Meanwhile guide ring also adds the processing and installation difficulty of reactor.
Summary of the invention
The present invention provides a kind of titanium white chloride oxidation reactor preventing scaring device, solves existing titanium white chloride oxidation reaction
It is unreasonable that device prevents the spout for forming air curtain in the scheme to scab in furnace from arranging by air curtain, influences chlorine in pipeline
The problem of anti-scar acts on.
The technical solution adopted by the present invention to solve the technical problems is: titanium white chloride oxidation reactor preventing scaring device,
Including tube furnace, one end of tube furnace is connecting flange, and air curtain room, the outer wall of air curtain room is arranged in tube furnace at connecting flange
Upper setting gas access, the inner wall of air curtain room are tube furnace furnace wall, are arranged on the inner wall of air curtain room and are connected to inside tube furnace
Air curtain hole, multiple air curtain holes become one group around the circle of furnace wall one, air curtain hole at least two groups；Air curtain hole is by the first pores and the second pores
In the upper arranged for interval of tube furnace axial direction, wherein the opening direction of the first pores is perpendicular to tube furnace furnace wall, the aperture of the second pores
Direction and tube furnace shaft radial direction are tangent.
Further, first pores and the second pores Heterogeneous Permutation on tube furnace furnace wall, the first pores and
Two pores radial angles differ 20~40 degree.
It specifically, is eight with the quantity of the first pores and the second pores in group air curtain hole, and the first pores and second
Pores radial angle differs 22.5 degree.
Specifically, it is less than 50mm at a distance from connecting flange near one group of air curtain hole of connecting flange.
Further, at least three groups of the air curtain hole, using connecting flange as starting point, air curtain hole is in tube furnace axial direction
Spacing in equal difference be incremented by arrangement.Specifically, first group of air curtain hole and second group of air curtain hole distance are 15~18mm, two adjacent groups
Air curtain hole group distance is incremented by by 2~5mm.
Further, equal with the aperture in group air curtain hole, using connecting flange as starting point, air curtain hole is in tube furnace axis
Upward aperture is incremented by arrangement in equal difference.Specifically, the diameter in first group of air curtain hole is 8~10mm, and two adjacent groups air curtain hole
Diameter increases by 1~2mm.
Specifically, first pores and the second pores are 2~5 groups total.
Specifically, the tube furnace is stainless steel material.
The beneficial effects of the present invention are: chlorine or nitrogen enter air curtain room from gas access, then by along tube furnace furnace wall diameter
Enter tube furnace to the air curtain hole being axially distributed, forms vertical and rotation mixed airflow, rotation in tube furnace shaft inner wall
Air-flow can cover circumferential wall to greatest extent, form comprehensive protection air curtain, the titanium dioxide for preventing reaction zone from newly being formed
Grain is adhered to wall surface；Uprush has stronger impact force to newborn titanium dioxide granule, obstructs two newly formed in main fluid
Titan oxide particles and wall surface adhere to, and effectively prevent scabbing.
Air curtain hole Heterogeneous Permutation on tube furnace furnace wall guarantees circumferential air curtain hole point while reducing air curtain hole number
Cloth density reinforces the protection scope of air curtain in main pipeline.In addition, aperture the number of openings is few in preventing scaring device, aperture is relatively
Greatly, structure is simple, easy to process and installation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of titanium white chloride oxidation reactor preventing scaring device of the present invention.
Fig. 2 is the schematic diagram of the first pores in the present invention.
Fig. 3 is the schematic diagram of the second pores in the present invention.
Components, position and number in figure: tube furnace 1, connecting flange 2, air curtain room 3, gas access 4, air curtain hole 5.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, titanium white chloride oxidation reactor preventing scaring device of the present invention, including tube furnace 1, tube furnace 1 are not
Rust steel material.The left end of tube furnace 1 is connecting flange 2, and air curtain room 3 is arranged in tube furnace 1 at connecting flange 2, and air curtain room 3 is
Gas access 4 is arranged on the outer wall of air curtain room 3 for one toroidal cavity, and gas access 4 is for being passed through chlorine or nitrogen.Air curtain room 3
Inner wall be tube furnace 1 furnace wall, setting is connected to the air curtain hole 5 inside tube furnace 1, multiple air curtains on the inner wall of air curtain room 3
Hole 5 becomes one group around the circle of furnace wall one, and 5 at least two groups of air curtain hole, such as air curtain hole 5 are 2~5 groups.Air curtain hole 5 by the first pores and
Second pores is in the axial upper arranged for interval of tube furnace 1, wherein the opening direction of the first pores is perpendicular to 1 furnace wall of tube furnace, such as Fig. 2
It is shown；The opening direction of second pores and 1 shaft radial direction of tube furnace are tangent, as shown in Figure 3.First pores and the second pores
The Heterogeneous Permutation on 1 furnace wall of tube furnace, the first pores and the second pores radial angle differ 20~40 degree.Exist with group air curtain hole 5
It is evenly arranged around the furnace wall of tube furnace 1, and aperture is equal, is with the quantity of the first pores and the second pores in air curtain hole is organized
Eight, and the first pores and the second pores radial angle differ 22.5 degree, as shown in Figures 2 and 3.
It is then first group near one group of air curtain hole 5 of connecting flange 2 for convenient for statement, note connecting flange 2 is starting point
Air curtain hole 5 is sequentially second group of air curtain hole 5, third group air curtain hole 5 ... and so on.Wherein, first group of air curtain hole 5 and company
The distance of acting flange 2 is less than 50mm, and since first group of air curtain hole 5, spacing of the air curtain hole 5 in 1 axial direction of tube furnace is in equal difference
It is incremented by arrangement.First group of air curtain hole 5 and second group of air curtain hole 5 are apart from for 15~18mm, for example, 16mm or 17mm, two adjacent groups
5 group distance of air curtain hole is incremented by by 2~5mm, such as is incremented by according to 3 or 4mm.
No matter the first pores or the second pores, with organize air curtain hole 5 aperture it is equal, be starting point, gas with connecting flange 2
Curtain hole 5 is incremented by arrangement in equal difference in the aperture in 1 axial direction of tube furnace.Specifically, the diameter in first group of air curtain hole 5 be 8~
10mm, such as the diameter in first group of air curtain hole 5 is 9mm, and 5 diameter of two adjacent groups air curtain hole increases by 1~2mm.
First pores and the second pores are in the axial upper arranged for interval of tube furnace 1, and chlorine or nitrogen are in 1 shaft inner wall of tube furnace
Face forms vertical and rotation mixed airflow, swirling eddy can cover circumferential wall to greatest extent, form gas blanket, prevent anti-
The titanium dioxide granule for answering area newly to be formed is adhered to wall surface and grows up；Uprush has stronger punching to newborn titanium dioxide granule
Power is hit, the titanium dioxide granule newly formed in main fluid is obstructed and wall surface adheres to, effectively prevent scabbing.
Embodiment:
For titanium white chloride oxidation reactor preventing scaring device as described in above content, tube furnace 1 is stainless steel material, air curtain room
5 groups of air curtain holes 5 are set on 3 inner wall, first and third, five group of air curtain hole 5 is the first pores, the opening direction in air curtain hole 5 perpendicular to
Furnace wall；The second, four groups of air curtain holes 5 are the second pores, and the opening direction and shaft radial direction in air curtain hole 5 are tangent.No matter first
Pores or the second pores are eight with the quantity for organizing air curtain hole 5,5 Heterogeneous Permutation of two adjacent groups air curtain hole, and the first pores
22.5 degree are differed with the second pores radial angle.Note connecting flange 2 is starting point, first group of air curtain hole 5 and second group of air curtain hole 5
Axial distance is 14mm, and second group of air curtain hole 5 and 5 axial distance of third group air curtain hole are 16mm.And so on, the three or four group,
Four or five groups of 5 axial distances of air curtain hole are respectively 18mm and 20mm.The opening diameter in first group of air curtain hole 5 be 10mm, behind every group
5 diameter of air curtain hole increases 2mm compared with previous group.First group of air curtain hole 5 is 40mm at a distance from connecting flange 2.Oxygen quality flow
For 1200kg/h, titanium tetrachloride mass flow is 5500kg/h, and air curtain area quality of chlorine gas flow is 270kg/h, continuous production 30
Tear furnace after it open, air curtain area front and back is not formed to scab.
Comparative example 1:
In comparative example 1, the second pores in above-described embodiment is replaced with into the first pores, i.e., five groups of setting in air curtain room 3
Air curtain hole 5, the opening direction in five groups of air curtain holes 5 are each perpendicular to furnace wall, and five groups of air curtain holes 5 are arrayed parallelly and equidistantly.Oxygen quality stream
Measure 1200kg/h, titanium tetrachloride mass flow 5500kg/h, air curtain area quality of chlorine gas flow be 270kg/h, continuous production 7 days
Afterwards, furnace pressure increases, and tears open before finding air curtain area after furnace and scar material bonding phenomenon occurs between 5 hole of air curtain hole.
Comparative example 2:
In comparative example 2, the first pores in above-described embodiment is replaced with into the second pores, i.e., five groups of setting in air curtain room 3
Air curtain hole 5, the opening direction in five groups of air curtain holes 5 is tangent with shaft radial direction, and five groups of air curtain holes 5 are arrayed parallelly and equidistantly.Oxygen
Gas mass flow 1200kg/h, titanium tetrachloride mass flow 5500kg/h, air curtain area quality of chlorine gas flow are 270kg/h, continuously
After production 11 days, furnace pressure increases, and tears open before finding air curtain area after furnace and scar material bonding phenomenon occurs between aperture.
Claims (10)
1. titanium white chloride oxidation reactor preventing scaring device, including tube furnace (1), one end of tube furnace (1) is connecting flange
(2), air curtain room (3) are arranged at connecting flange (2) in tube furnace (1), and gas access (4) are arranged on the outer wall of air curtain room (3),
It is characterized by: air curtain room (3) are a toroidal cavity, the inner wall of air curtain room (3) is tube furnace (1) furnace wall, air curtain room (3)
Setting is connected to the internal air curtain hole (5) of tube furnace (1) on inner wall, and multiple air curtain holes (5) become one group around the circle of furnace wall one, air curtain
Hole (5) at least two groups；Air curtain hole (5) arranged for interval in tube furnace (1) axial direction by the first pores and the second pores, wherein first
The opening direction of pores is perpendicular to tube furnace (1) furnace wall, opening direction and tube furnace (1) the shaft radial direction phase of the second pores
It cuts.
2. titanium white chloride oxidation reactor preventing scaring device as described in claim 1, it is characterised in that: first pores and
Second pores Heterogeneous Permutation on tube furnace (1) furnace wall, the first pores and the second pores radial angle differ 20~40 degree.
3. titanium white chloride oxidation reactor preventing scaring device as claimed in claim 2, it is characterised in that: with group air curtain hole (5)
In the quantity of the first pores and the second pores be eight, and the first pores and the second pores radial angle differ 22.5 degree.
4. titanium white chloride oxidation reactor preventing scaring device as described in claim 1, it is characterised in that: near connecting flange
(2) one group of air curtain hole (5) is less than 50mm at a distance from connecting flange (2).
5. titanium white chloride oxidation reactor preventing scaring device as described in claim 1, it is characterised in that: the air curtain hole (5)
At least three groups, with connecting flange (2) for starting point, the spacing of air curtain hole (5) in tube furnace (1) axial direction is incremented by cloth in equal difference
It sets.
6. titanium white chloride oxidation reactor preventing scaring device as claimed in claim 5, it is characterised in that: first group of air curtain hole
It (5) is 15~18mm with second group of air curtain hole (5) distance, two adjacent groups air curtain hole (5) group distance is incremented by by 2~5mm.
7. titanium white chloride oxidation reactor preventing scaring device as described in claim 1, it is characterised in that: with group air curtain hole (5)
Aperture it is equal, with connecting flange (2) be starting point, air curtain hole (5) the aperture in tube furnace (1) axial direction in equal difference be incremented by
Arrangement.
8. titanium white chloride oxidation reactor preventing scaring device as claimed in claim 7, it is characterised in that: first group of air curtain hole
(5) diameter is 8~10mm, and two adjacent groups air curtain hole (5) diameter increases by 1~2mm.
9. titanium white chloride oxidation reactor preventing scaring device as described in claim 1, it is characterised in that: first pores and
Second pores is 2~5 groups total.
10. titanium white chloride oxidation reactor preventing scaring device as described in claim 1, it is characterised in that: the tube furnace (1)
For stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711034496.4A CN107662943B (en) | 2017-10-30 | 2017-10-30 | Titanium white chloride oxidation reactor preventing scaring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711034496.4A CN107662943B (en) | 2017-10-30 | 2017-10-30 | Titanium white chloride oxidation reactor preventing scaring device |
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| Publication Number | Publication Date |
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| CN107662943A CN107662943A (en) | 2018-02-06 |
| CN107662943B true CN107662943B (en) | 2019-09-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092216A (en) * | 2018-08-21 | 2018-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Low-temperature boiling chlorination furnace reaction segment structure |
| CN108793240A (en) * | 2018-08-21 | 2018-11-13 | 攀钢集团攀枝花钢铁研究院有限公司 | titanium tetrachloride oxidation reactor feed structure |
| CN113845145A (en) * | 2021-11-15 | 2021-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Scar-proof device of titanium white chloride oxidation reactor and oxidation reactor |
| CN115672203A (en) * | 2022-11-07 | 2023-02-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Scar-preventing device and method for titanium white chloride oxidation reactor and oxidation reactor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277941A (en) * | 2000-06-13 | 2000-12-27 | 华东理工大学 | Titanium white chloride oxidation reactor |
| CN1609001A (en) * | 2004-10-28 | 2005-04-27 | 中国科学院过程工程研究所 | Method and apparatus for preparing titanium dioxide by oxidation reactor |
| CN101279763A (en) * | 2008-05-22 | 2008-10-08 | 中国科学院过程工程研究所 | Chloride process titanium dioxide reactor |
| CN106241870A (en) * | 2016-09-05 | 2016-12-21 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of for preparing the device of titanium dioxide and preparing the method for titanium dioxide |
| CN107199218A (en) * | 2017-07-14 | 2017-09-26 | 攀钢集团研究院有限公司 | Oxidation reactor is except scar device and except scar method |
-
2017
- 2017-10-30 CN CN201711034496.4A patent/CN107662943B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277941A (en) * | 2000-06-13 | 2000-12-27 | 华东理工大学 | Titanium white chloride oxidation reactor |
| CN1609001A (en) * | 2004-10-28 | 2005-04-27 | 中国科学院过程工程研究所 | Method and apparatus for preparing titanium dioxide by oxidation reactor |
| CN101279763A (en) * | 2008-05-22 | 2008-10-08 | 中国科学院过程工程研究所 | Chloride process titanium dioxide reactor |
| CN106241870A (en) * | 2016-09-05 | 2016-12-21 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of for preparing the device of titanium dioxide and preparing the method for titanium dioxide |
| CN107199218A (en) * | 2017-07-14 | 2017-09-26 | 攀钢集团研究院有限公司 | Oxidation reactor is except scar device and except scar method |
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