CN100482592C - Oxidation reactor for preparing titanium white through chlorination process, and method - Google Patents
Oxidation reactor for preparing titanium white through chlorination process, and method Download PDFInfo
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- CN100482592C CN100482592C CNB200610112892XA CN200610112892A CN100482592C CN 100482592 C CN100482592 C CN 100482592C CN B200610112892X A CNB200610112892X A CN B200610112892XA CN 200610112892 A CN200610112892 A CN 200610112892A CN 100482592 C CN100482592 C CN 100482592C
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- titanium tetrachloride
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000003647 oxidation Effects 0.000 title claims abstract description 33
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 33
- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 26
- 235000010215 titanium dioxide Nutrition 0.000 title claims description 50
- 230000008569 process Effects 0.000 title claims description 35
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 83
- 239000007789 gas Substances 0.000 claims abstract description 53
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000001301 oxygen Substances 0.000 claims abstract description 40
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000000112 cooling gas Substances 0.000 claims description 50
- 238000006243 chemical reaction Methods 0.000 claims description 45
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 34
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 34
- 239000004571 lime Substances 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 29
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 20
- 206010039509 Scab Diseases 0.000 claims description 14
- 239000000376 reactant Substances 0.000 claims description 14
- 239000004408 titanium dioxide Substances 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002737 fuel gas Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- 238000006713 insertion reaction Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 13
- 238000009826 distribution Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 229910003074 TiCl4 Inorganic materials 0.000 abstract 4
- 230000001668 ameliorated effect Effects 0.000 abstract 1
- 230000036573 scar formation Effects 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 pottery Substances 0.000 description 2
- 230000010748 Photoabsorption Effects 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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Abstract
This invention discloses oxidation reactor and method for preparing TiO2 by chlorination. The reactor comprises a combustion chamber, a shell of reacting zone, and a shell of developing zone. A TiCl4 inflow pipe is inserted vertically into the shell of the reacting zone, and is bent 90 degrees to form an L-shaped pipe towards the shell of the developing zone. A nozzle is fixed on the end of the L-shaped pipe, and on the same axis of the shells. A cool air entrance is at the connecting part of the shells. The right side of the shell of the developing zone is connected with the flow exit. The tangential and radial TiCl4 cyclone jets can be formed at the axes to mix TiCl4 gas and hot oxygen and react fast and uniformly. The mixing effect can be ameliorated by controlling the relative momentum of the TiCl4 jet. Cool air is applied to blow the nozzle to prevent blockage. The cool air introduced from the connecting part of the shells is applied to control the rection, reduce and scar formation on the reactor wall, and adjust the particle size distribution.
Description
Technical field
The invention belongs to the high-temperature chemical reaction apparatus field.Be particularly related to a kind of oxidation reactor and method thereof of preparing titanium white through chlorination process.
Background technology
Titanium white is titanium dioxide (TiO
2), be a kind of broad-spectrum inorganic functional material.The nano level titanium white has that specific surface area is big, surfactivity is high, photo absorption performance is good and to advantages such as ultraviolet receptivity are strong, be widely used in various fields such as production processes such as plastics, pottery, coating, daily chemicals, Industrial Catalysis process, environmental engineerings, wherein diameter has vast market demand at the rutile type of 200-300nm.At present, the method for producing this rutile type mainly contains two kinds of sulfuric acid process and chlorination processs, and chlorination process is short with its flow process, quality product is high, pollution is little, the level of automation advantages of higher, becomes the mainstream technology and the development trend of international titanium white industry.
Chloride process titanium dioxide technology comprises mainly that titanium slag chlorination, crude titanic chloride are refining, titanium tetrachloride oxidation and titanium dioxide coating four big processes, and wherein the titanium tetrachloride oxidation is the key for preparing high-grade rutile titanium white powder, and oxidation reactor is a nucleus equipment wherein; Mainly be made of combustion zone, mixing zone and reaction zone three parts as precombustion formula oxidation reactor, the mixing zone is the key position of oxidation reactor, to the quality of titanium white product, as particle diameter, size-grade distribution, plays decisive action.For the feed way of mixing zone, different patents has different descriptions.The feed way of mixing zone roughly can be divided into two classes: limit wall jet and axle center jet.For this reason, numerous patent disclosures technology separately, as:
Chinese patent CN1277941A adopts a kind of titanium white chloride oxidation reactor with variable cross-section collector ring and titanium tetrachloride compound jet hole.
U.S. Pat 3540853 and US3582278 have introduced a kind of reinforced limit wall jetting method of charging ring that adopts, and this charging ring is cut apart the titanium tetrachloride high-temperature steam by uniform small pores, and the realization high-temperature oxygen mixes with titanium tetrachloride.U.S. Pat 4803056 and US6350427 propose to adopt wall slit effusive mode, realize the mixing of high temperature titanium tetrachloride and oxygen.
U.S. Pat 3966892 has disclosed a kind of axle center effusive feed way.The jet orifice of titanium tetrachloride gases is positioned at the axle center of cylindrical mixing zone, and titanium tetrachloride gases is axially injected inside reactor along the mixing zone.The jet orifice of oxygen is the donut with the titanium tetrachloride jet orifice.Oxygen is axially injected inside reactor equally from jet orifice along the mixing zone.Oxygen is wrapped in the axle center by titanium tetrachloride gases in the mixing zone, two kinds of reactant hybrid reactions.This feeding manner makes nascent titanium dioxide granule be positioned at the reactor axle center, can not cause scabbing near the limit wall, but but prolong two kinds of well-mixed times of reactant gases.This feed way makes oxygen need mix through just reaching sufficient molecular level than long development section with titanium tetrachloride gases, and this can have a strong impact on titanium white particulate size-grade distribution.
Summary of the invention
The oxidation reactor and the method thereof that the purpose of this invention is to provide a kind of preparing titanium white through chlorination process.This reactor makes titanium tetrachloride gases contact the back with high-temperature oxygen and realizes fast, mixes uniformly and react, and prevents the phenomenon that scabs.
Purpose of the present invention can realize by following scheme: a kind of oxidation reactor of preparing titanium white through chlorination process, it is characterized in that, this reactor is made of combustion chamber 1, reaction zone shell 2, development zone shell 3 polyphones, in the titanium tetrachloride transfer lime 8 vertical insertion reaction district shells 2, through forming towards the L of development zone shell 3 type pipe behind the 90 degree corners, nozzle 12 is fixed on L type pipe end, is on the same axis 4 with reaction zone shell 2, development zone shell 3; Cooling gas B inlet 16 is in the junction of reaction zone shell 2 and development zone shell 3, and combustion chamber 1 the other end connects entry of combustion chamber 7, and the right-hand member of development zone shell 3 connects the outlet 13 of flowing.
Described development zone shell 3 is the gradual-enlargement type cone, and tapering α is 0.5-15 degree.
Termination titanium tetrachloride gases opening for feed 5 on the described titanium tetrachloride transfer lime 8, its internal diameter of the pipeline is connected with nozzle 12 after shrinking.Cooling jacket 9 is coaxial with titanium tetrachloride transfer lime 8, extends to the end of transfer lime 8 always.
It is the annular space of 1-3mm that described cooling jacket 9 forms the gap with titanium tetrachloride transfer lime 8, the fixed support sheet is set in the annular space, the position that is used for fixing titanium tetrachloride transfer lime 8, the annular space size that cooling jacket 9 and titanium tetrachloride transfer lime 8 are formed is consistent, cooling jacket 9 upper ends are cooling gas A import 6, and the lower end is cooling gas A outlet 10.
Described nozzle 12 1 ends are connected with titanium tetrachloride transfer lime 8, and the other end connects closure wall 11.
Described nozzle 12 sidewalls have 3 one 10 jet orifices, and the screw-blade 14 on closure wall of being fixed on 11 is arranged in the nozzle 12, thereby form the eddy flow passage, make gas stream of titanium tetrachloride enter reactor with cyclone mode.
Described cooling gas B inlet 16 is diameters of 4-10 times of reaction zone shells 2 to nozzle 12 distances.
The process of described preparing titanium white through chlorination process, for fuel gas and excessive oxygen enter combustion chamber 1 by entry of combustion chamber 7 along axis 4, high-temperature oxygen after the burning enters reaction chamber 15, titanium tetrachloride and aluminum chloride gas enter titanium tetrachloride transfer lime 8 by titanium tetrachloride opening for feed 5, cooling gas A enters cooling jacket 9 by cooling gas A inlet 6, near the reactant gases the cooling jet; Necking down through titanium tetrachloride transfer lime 8 is accelerated, enter nozzle 12, under the guide functions of the fixedly screw-blade 14 of nozzle 12 inside, titanium tetrachloride and aluminum chloride gas form the eddy flow perpendicular to axis 4, cut, radially inject reaction chamber 15 and oxygen mix, reaction from the jet orifice edge of nozzle 12 sidewalls, simultaneously, cooling gas B is by cooling gas B inlet 16, enter reaction zone 15 with cyclone mode, reactant gases, product and cooling gas leave reactor by the mobile outlet 13 of reactor right-hand member.
Described is the oxygen of normal temperature condition by the cooling gas A inlet 6 cooling gas A that enter cooling jacket 9, form the jet that is parallel to axle 4 in cooling gas A outlet 10, the jet orifice of continuous purge nozzle 12 sidewalls, near the cooling gas A cooling jet reactant gases, stop to be reflected at this position generation, avoided near the phenomenon that scabs of jet orifice.
Described is the chlorine or the nitrogen of normal temperature condition by the cooling gas B inlet 16 cooling gas B that enter, and enters reaction zone 15 with cyclone mode, and the cooling reactant gases stops reaction further to take place, thereby effectively controls the titanium dioxide product particle diameter; Simultaneously, cooling gas B has played the function of guard reactor wall, avoid titanium dioxide granule in reaction zone and development zone side wall deposition, scab.
Describedly enter titanium tetrachloride gas and aluminum chloride gas from titanium tetrachloride opening for feed 5, the mass ratio of the two is (65-200): 1, and feeding temperature is 350-580 ℃.
Oxygen after the described burning and jet titanium tetrachloride gases ratio of momentum are (10-90): 1, and jet gas speed is greater than oxygen gas speed.
The invention has the beneficial effects as follows that this reactor makes titanium tetrachloride gases contact the back with high-temperature oxygen and realizes fast, mixes uniformly and react, and prevent from the phenomenon that scabs to be widely used in industrial production, and have the following advantages:
(1) because titanium tetrachloride is a lot of greatly than oxygen density, to cut in the axle center, under the radial vortex jet action, titanium tetrachloride gases more easily is distributed to oxygen inside, to realize the rapid uniform mixing of two strands of reactors.In the position of the about 4 times of nozzle diameters in nozzle downstream, can realize that just the complete molecular level of two strands of gases mixes.
(2) by the relative momentum of control titanium tetrachloride ejection, can make titanium tetrachloride gases be deep into oxygen layer inside, and the incomplete penetration oxygen layer contact with the reactor wall.This has significantly reduced the corrosion of reactor wall and the possibility that scabs.
(3) cooling gas A can prevent generation and the obstruction that titanium dioxide goes out at spout to the continuous purging of titanium tetrachloride spout.Simultaneously, cooling jacket has also been isolated titanium tetrachloride transfer lime and outside high-temperature oxygen, has reduced the requirement to titanium tetrachloride transfer lime material.
(4) cooling gas B can control to react and carry out, and regulates product granularity and size-grade distribution to a certain extent.
Description of drawings
Fig. 1 is a chloride process titanium dioxide gas phase oxidation reactor synoptic diagram of the present invention;
Fig. 2 is the sectional view at chloride process titanium dioxide gas phase oxidation reactor nozzle of the present invention place;
Fig. 3 is the sectional view in chloride process titanium dioxide gas phase oxidation reactor A-A of the present invention cross section;
Embodiment
The invention provides a kind of oxidation reactor and method thereof of preparing titanium white through chlorination process.Fig. 1 is a chloride process titanium dioxide gas phase oxidation reactor synoptic diagram of the present invention.Mainly realize the jet of titanium tetrachloride gases by the nozzle that is positioned at the reaction chamber axle center, nozzle contains the fixed screw-blade, forms the eddy flow of titanium tetrachloride.The spout of rotational flow gas by nozzle wall tangentially, radially injected high-temperature oxygen inside along reaction chamber.Because the density of titanium tetrachloride gases is big doubly a lot of than oxygen, therefore under the effect of swirl jet, is easier to be distributed to Oxygen Flow inside.By adopting the swirl jet momentum of optimizing, make titanium tetrachloride gases can not penetrate oxygen layer fully and contact, thereby reduced wall corrosion and the possibility that scabs with the reactor wall.In order to prevent near titanium tetrachloride and oxygen intense reaction spout, cause scabbing of spout place, utilize the cooling jacket that is wrapped in titanium tetrachloride transfer lime outer wall to introduce one cooling gas A.Near the cooling gas A cooling jet reactant gases stops to be reflected at this position generation.Because the absolute magnitude of cooling gas A seldom, can not have influence on the indoor mixing of entire reaction, reaction condition.Simultaneously, cooling jacket has also been isolated titanium tetrachloride transfer lime and outside high-temperature oxygen, has reduced the requirement to titanium tetrachloride transfer lime material.The oxidation reactor of said preparing titanium white through chlorination process mainly is made of combustion chamber 1, reaction zone shell 2, development zone shell 3 polyphones, in the titanium tetrachloride transfer lime 8 vertical insertion reaction district shells 2, through forming towards the L of development zone shell 3 type pipe behind the 90 degree corners, nozzle 12 is fixed on L type pipe end, is on the same axis 4 with reaction zone shell 2, development zone shell 3; Cooling gas B inlet 16 is in the junction of reaction zone shell 2 and development zone shell 3, and combustion chamber 1 the other end connects entry of combustion chamber 7, and the right-hand member of development zone shell 3 connects the outlet 13 of flowing.Above-mentioned development zone shell 3 is the gradual-enlargement type cone, and tapering α is 0.5-15 degree (as shown in Figure 2).Reaction zone shell 2 forms reaction chamber 15 with development zone shell 3; Be provided with titanium tetrachloride transfer lime 8 in the described reaction zone shell 2, cooling jacket 9, cooling gas A outlet 10, nozzle 12; It is the annular space of 1-3mm that cooling jacket 9 forms the gap with titanium tetrachloride transfer lime 8, is fixed with the support chip of some amount in the annular space, is used for fixing the position of titanium tetrachloride transfer lime 8; Nozzle 12 sidewalls have spout, and spout quantity is 3-10, are provided with fixedly screw-blade 14 (as shown in Figure 3) in the nozzle 12, form the eddy flow passage.
Fuel gas and excessive oxygen enter combustion chamber 1 by entry of combustion chamber 7 along axis 4.The oxygen that high temperature after the burning is 1300-1800 ℃ enters reaction chamber 15.With mass ratio is (65-200): 1, feeding temperature is that 350-580 ℃ titanium tetrachloride and aluminum chloride gas enters titanium tetrachloride transfer lime 8 by titanium tetrachloride opening for feed 5, necking down through titanium tetrachloride transfer lime 8 is accelerated, enter nozzle 12, oxygen and jet titanium tetrachloride gases ratio of momentum after burning this moment are (10-90): 1, and jet gas speed is greater than oxygen gas speed.Under the guide functions of the fixedly screw-blade 14 of nozzle 12 inside, titanium tetrachloride and aluminum chloride gas form the eddy flow perpendicular to axis 4, from the jet orifice of nozzle 12 sidewalls along cutting, radially inject reaction chamber 15 and oxygen mix, reaction.Because the density of titanium tetrachloride gases is big doubly a lot of than oxygen, therefore under the effect of swirl jet, is easier to be distributed to Oxygen Flow inside.By adopting the swirl jet momentum of optimizing, make titanium tetrachloride gases can not penetrate oxygen layer fully and contact, thereby reduced wall corrosion and the possibility that scabs with the reactor wall.
Cooling gas A enters cooling jacket 9 by cooling gas A inlet 6, forms the jet that is parallel to axle 4 by cooling gas A outlet 10, continuously the jet orifice of purge nozzle 12 sidewalls.Near the cooling gas A cooling jet reactant gases stops to be reflected at this position generation, has avoided near the phenomenon that scabs of jet orifice.Because the absolute magnitude of cooling gas A seldom, can not have influence on the indoor mixing of entire reaction, reaction condition.Simultaneously, cooling gas A has also isolated titanium tetrachloride transfer lime and outside high-temperature oxygen, has reduced the requirement to titanium tetrachloride transfer lime material.
Cooling gas B enters reaction zone 15 by cooling gas B inlet 16 with cyclone mode.The cooling reactant gases stops reaction further to take place, thereby effectively controls the titanium dioxide product particle diameter.Simultaneously, cooling gas B has played the function of guard reactor wall, avoid titanium dioxide granule in reaction zone and development zone side wall deposition, scab.
Example one:
The development zone shell of oxidation reactor of the present invention is the gradual-enlargement type cone, and tapering α is 8 degree.The gap is 3mm between cooling jacket and the titanium tetrachloride transfer lime, and nozzle wall has 10 spouts:
Fuel gas: toluene
Enter the oxygen temperature of reaction chamber after the burning: 1500 ℃
Titanium tetrachloride and aluminum chloride: temperature: 450 ℃
Titanium tetrachloride and aluminum chloride mass ratio: 100:1
Cooling gas A: oxygen, temperature: 25 ℃
Cooling gas B: chlorine, temperature: 25 ℃
Move under the condition, do not have the phenomenon that scabs in the reactor, the stove inner working face is smooth, and product granularity and size-grade distribution can be regulated according to reactor length.
Claims (13)
1. the oxidation reactor of a preparing titanium white through chlorination process, it is characterized in that, this reactor is made of combustion chamber (1), reaction zone shell (2), development zone shell (3) polyphone, in the vertical insertion reaction district shell (2) of titanium tetrachloride transfer lime (8), through forming the L type pipe towards development zone shell (3) behind the 90 degree corners, nozzle (12) is fixed on L type pipe end, is on the same axis (4) with reaction zone shell (2), development zone shell (3); Cooling gas B inlet (16) is in the junction of reaction zone shell (2) and development zone shell (3), and combustion chamber (1) the other end connects entry of combustion chamber (7), and the right-hand member of development zone shell (3) connects the outlet (13) of flowing; Cooling jacket (9) is coaxial with titanium tetrachloride transfer lime (8), extends to the end of transfer lime (8) always.
2. according to the oxidation reactor of the described preparing titanium white through chlorination process of claim 1, it is characterized in that described development zone shell (3) is the gradual-enlargement type cone, tapering α is 0.5-15 degree.
3. according to the oxidation reactor of the described preparing titanium white through chlorination process of claim 1, it is characterized in that described titanium tetrachloride transfer lime (8) is gone up termination titanium tetrachloride gases opening for feed (5), its internal diameter of the pipeline is connected with nozzle (12) after shrinking.
4. according to the oxidation reactor of the described preparing titanium white through chlorination process of claim 1, it is characterized in that, it is the annular space of 1-3mm that described cooling jacket (9) forms the gap with titanium tetrachloride transfer lime (8), the fixed support sheet is set in the annular space, the position that is used for fixing titanium tetrachloride transfer lime (8), the annular space size that cooling jacket (9) and titanium tetrachloride transfer lime (8) are formed is consistent, and cooling jacket (9) upper end is cooling gas A import (6), and the lower end is cooling gas A outlet (10).
5. according to the oxidation reactor of the described preparing titanium white through chlorination process of claim 1, it is characterized in that described nozzle (12) one ends are connected with titanium tetrachloride transfer lime (8), the other end connects closure wall (11).
6. according to the oxidation reactor of the described industrial preparing titanium white through chlorination process of claim 1, it is characterized in that, described nozzle (12) sidewall has 3-10 jet orifices, screw-blade (14) on closure wall of being fixed on (11) is arranged in the nozzle (12), thereby form the eddy flow passage, make gas stream of titanium tetrachloride enter reactor with cyclone mode.
7. according to the oxidation reactor of the described preparing titanium white through chlorination process of claim 1, it is characterized in that described cooling gas B inlet (16) is the diameter of 4-10 times of reaction zone shells (2) to nozzle (12) distance.
8. the oxidation reactor of the described preparing titanium white through chlorination process of claim 1 prepares the method for titanium white, it is characterized in that, describedly prepare in the process of titanium white at oxidation reactor with preparing titanium white through chlorination process, fuel gas and excessive oxygen enter combustion chamber (1) by entry of combustion chamber (7) along axis (4), high-temperature oxygen after the burning enters reaction chamber (15), titanium tetrachloride and aluminum chloride gas enter titanium tetrachloride transfer lime (8) by titanium tetrachloride opening for feed (5), cooling gas A enters cooling jacket (9) by cooling gas A inlet (6), near the reactant gases the cooling jet; Necking down through titanium tetrachloride transfer lime (8) is accelerated, enter nozzle (12), under the guide functions of the inner fixedly screw-blade (14) of nozzle (12), titanium tetrachloride and aluminum chloride gas form the eddy flow perpendicular to axis (4), cut, radially inject reaction chamber (15) and oxygen mix, reaction from the jet orifice edge of nozzle (12) sidewall, simultaneously, cooling gas B is by cooling gas B inlet (16), enter reaction zone (15) with cyclone mode, the cooling reactant gases; Reactant gases, product, cooling gas leave reactor by the mobile outlet (13) of reactor right-hand member.
9. the oxidation reactor of described preparing titanium white through chlorination process prepares the method for titanium white according to Claim 8, it is characterized in that, the described cooling gas A that enters cooling jacket (9) by cooling gas A inlet (6) is the oxygen of normal temperature condition, form the jet of parallel to the axis (4) in cooling gas A outlet (10), the jet orifice of continuous purge nozzle (12) sidewall, near the cooling gas A cooling jet reactant gases stops to be reflected at this position generation, has avoided near the phenomenon that scabs of jet orifice.
10. the oxidation reactor of described preparing titanium white through chlorination process prepares the method for titanium white according to Claim 8, it is characterized in that, the described cooling gas B that is entered by cooling gas B inlet (16) is the chlorine or the nitrogen of normal temperature condition, enter reaction zone (15) with cyclone mode, the cooling reactant gases, stop reaction further to take place, thereby effectively control the titanium dioxide product particle diameter; Simultaneously, cooling gas B has played the function of guard reactor wall, avoid titanium dioxide granule in reaction zone and development zone side wall deposition, scab.
11. the oxidation reactor of described preparing titanium white through chlorination process prepares the method for titanium white according to Claim 8, it is characterized in that, enter titanium tetrachloride gas and aluminum chloride gas from described titanium tetrachloride opening for feed (5), the mass ratio of the two is (65-200): 1, and feeding temperature is 350-580 ℃.
12. the oxidation reactor of described preparing titanium white through chlorination process prepares the method for titanium white according to Claim 8, it is characterized in that, oxygen after the described burning and jet titanium tetrachloride gases ratio of momentum are (10-90): 1, and jet gas speed is greater than oxygen gas speed.
13. the oxidation reactor of described preparing titanium white through chlorination process prepares the method for titanium white according to Claim 8, it is characterized in that, described fuel gas is toluene.
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| CN103723766B (en) * | 2013-12-09 | 2016-04-06 | 云南冶金新立钛业有限公司 | Prepare the method for titanium dioxide |
| CN103663552B (en) * | 2013-12-09 | 2016-06-01 | 云南冶金新立钛业有限公司 | Prepare method and the system of titanium dioxide |
| CN103663553B (en) * | 2013-12-09 | 2016-06-29 | 云南冶金新立钛业有限公司 | The method preparing titanium dioxide |
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| 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 |
| CN108793241B (en) * | 2018-09-04 | 2023-09-08 | 沈阳东方钛业股份有限公司 | Charging ring for titanium dioxide production |
| CN112742486B (en) * | 2019-10-29 | 2023-06-09 | 中国石油化工股份有限公司 | Oil column catalyst forming device and forming method |
| CN112275247B (en) * | 2020-09-30 | 2022-05-24 | 河南佰利联新材料有限公司 | Combustion ring |
| CN113943015B (en) * | 2021-11-15 | 2024-02-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method and equipment of titanium dioxide by using chlorination process |
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2006
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