CN2433247Y - Titanium white grit scar removing oxidizing reactor by chorination route - Google Patents
Titanium white grit scar removing oxidizing reactor by chorination route Download PDFInfo
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- CN2433247Y CN2433247Y CN 00243616 CN00243616U CN2433247Y CN 2433247 Y CN2433247 Y CN 2433247Y CN 00243616 CN00243616 CN 00243616 CN 00243616 U CN00243616 U CN 00243616U CN 2433247 Y CN2433247 Y CN 2433247Y
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Abstract
The utility model relates to a titanium white grit scar removing oxidizing reactor by chlorination route, which comprises a tube-type furnace stack welded on the other side of a lower flange. The upper surface of the flange is fixed with the bottom of a lower ring casing. The edge of a tube-type premixer is fixed with the inner wall of the outer casing of a furnace end. The end opening of the outer casing of the furnace end is welded on the bottom of the lower ring casing. A spray gun and a feed pipe are welded on the wall of the outer casing of the furnace end. The wall of the lower ring casing is provided with stairway round table, a through hole is arranged in the stairway round table, under which a conical surface is arranged, and a granule ejecting passage is formed. An upper ring casing and the lower ring casing are respectively arranged between the outer casing of the furnace end and the tube-type premixer and between the tube-type premixer and the wall of the lower ring casing, and a nozzle is formed between two walls of the lower ring casing. A salt spraying device is welded on the furnace stack. The titanium white grit scar removing oxidizing reactor by chlorination route has simple structure and convenient operation.
Description
The utility model relates to a kind of chemical reactor, particularly relates to a kind of chloride process titanium dioxide grit blast and removes the scar oxidation reactor.
TiCl
4In the gas phase oxidation, solid product TiO
2Very easily to deposit to the wall surface of reactor, form the scar layer, in order improving the quality of products, to realize the big industrial production of continous-stable, in time the scar layer of purge reactor is one of key problem of exploitation chloride process titanium dioxide production technology.External relevant TiCl
4The scar technology of removing of gas phase oxidation reactor, form is different, and means are various.The previous patent USP3284159 of du pont company adopts cold chlorine or rare gas element, under the pressurization situation, enters gas phase oxidation reactor, forms one deck by porous wall in tubular reactor and covers air curtain, to stop TiO
2Particle bonds on wall.Porous wall has certain anti-scar function, but the processing of porous wall micropore is quite difficult, the more important thing is that this method is to TiCl
4Scabbing of spout place is powerless.English Patent BP1208027 has introduced the method that the material film removes scar, and the added load volume of this method is quite big, and corresponding thermosteresis is also big, might cause flame-outly, makes to produce and interrupts, or make TiCl
4With O
2Initial reaction temperature reduce, influence quality product, or energy consumption strengthens, the increase cost, this patent does not still solve TiCl
4The problem that scabs at spout place.Adopt the enforceable scar method of removing, promptly adopt carrier gas oxygen or the nitrogen quartz sand with preheating, by nozzle, high-speed and continuous sprays in the oxidation reactor, leans on it to TiCl
4The strong souring of spout and reactor wall is removed the scar layer, uses a series of separating device then, it is separated, to recycle.Disclosed patent has: USP3512219,365202, BP171113,1092882,1049282,1069071,1170924,1111411.The spray sand type reactor to remove the scar effect relatively good, can carry out industrial production continuously.But, because the quartz sand straying quatity is big, its consumption is also big, thereby cause the over-drastic thermosteresis, quartz sand easily causes than galling nozzle and reactor, oxidation reactor psychrophore simultaneously, its is reduced in life-span, at quartz sand preheating, spray body and and product separation and the aspect such as recycle and also need to increase a series of extra processing units.Utility model patent number and for example: 93243693.5 quick oxidation reactor, it relates to a kind of TiCl
4A kind of quick oxidation reactor in the high-quality titanium white field is produced in gaseous oxidation.This reactor is owing to adopt tapered premixed device, and brings TiCl
4Bad with the oxygen preheat fruit; In addition, carrying pellet is by butterfly valve, and can not remove scar continuously.
The purpose of this utility model is to overcome the deficiency of prior art, in order to improve TiCl
4With the pre-heat effect of oxygen in premixed device; In removing the scar process, remove scar incessantly, reach the purpose that guarantees quality product, thus provide a kind of simple in structure, be convenient to operate, safe and reliable, can make the chloride process titanium dioxide grit blast of production process continous-stable operation remove the scar oxidation reactor.
Realize that the concrete solution of the purpose of this utility model is: a kind of chloride process titanium dioxide grit blast that the utility model provides removes the scar oxidation reactor and comprises: burner, flange, tubular type shaft, spray salt device; Wherein burner is between two ring flanges, and the burner bottom is by ring casing and following flange seal welding down; Wherein tubular type shaft seal welding is on the another side of lower flange, another piece flange seal is fixed on the tubular type premixed device top of burner, entrance of cooling water is arranged on the tubular type restoration of lower stack, and cooling water outlet is arranged on the tube furnace body, and tubular type shaft end outlet is the reactant outlet; Along fixing with burner shell inner wall sealing suitable for reading, the end opening seal welding of burner shell is on ring casing bottom down by the disk of the tubular type premixed device that has the disk edge for burner; Following ring casing wall has a ladder round platform on being, in a through hole is arranged, have down the cylinder of a cone surface; Tubular type premixed device cylindrical portions may is arranged on down in the through hole of ring casing wall, form the grit blast passage, form upper and lower ring casing between burner shell, tubular type premixed device, twice ring casing walls, form a spout between the following ring casing wall, spray gun be welded on the burner shell wall with the corresponding position of last ring casing on, filling tube be arranged on the burner shell with the corresponding wall of following ring casing on form; It is characterized in that: n spray salt device arranged, and n is at least more than 2; Spray salt device is connected on the shaft by an end inclined weld of spray gun, welding one cold chlorine carrier gas pipe on the spray gun wall, the spray gun the other end connects rotation and gives the salt valve, rotation interconnect its sidewall successively for the other end of salt valve to be welded with rock salt hopper, Pneumatic butterfly valve, the rock salt tank of equaler integrally welded.Wherein to be welded on the angle on the shaft be to be with the shaft cross section to spray gun: 0～30 ° angle; Wherein the angle in spout and shaft cross section is 0～60 °.
Advantage of the present utility model is: because reactor of the present utility model is partly changed taper premixed device inner chamber in the past at burner, and adopted the cylinder bore formula of tubular type premixed device, make original rotating fluid become plug flow, make chlorine and titanium chloride good mixing effect like this.And designed the spray gun structure that shaft has certain angle, reach pellet and mix; Butterfly valve in spray salt device uses rotation to give the salt valve, has adopted the adding technology of secondary oxygen, makes it to have made full use of energy, and high velocity air is carried an amount of solid particulate secretly, and its kinetic energy is very big, and the spray surface sweeping is joined together, and it is extremely remarkable to remove the scar effect continuously; High-temperature oxygen and TiCl have been adopted
4The structure of cross jet, make it in the extremely short time, to have realized fast the evenly mixing of molecularity, adopted the oxidizing process parameter that is fit to, the half-finished quality index of oxidation has reached advanced international standard, while the utility model also has simple in structure, is convenient to processing, is convenient to maintenance, be convenient to operation, running cost such as can reduce significantly at advantage.
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is a structural representation of the present utility model.
Make the chloride process titanium dioxide grit blast by Fig. 1 and remove the scar oxidation reactor, this reactor comprises: burner 1, flange 2, tubular type shaft 3, establish three spray salt devices 4,5,6, wherein burner 1 is by tubular type premixed device 10, burner shell 9, spray gun 11,12,19, ring casing wall 7,8 and filling tube 13,14 are formed down.Following ring casing wall 7 on have a ladder round platform, in a through hole is arranged, have the cylinder of a cone surface down.Tubular type premixed device 10 cylindrical portions may are arranged on down in the through hole of ring casing wall 7, form grit blast passage 16, the disk of burner shell 9 inwalls and tubular type premixed device 10 is fixed on down on the ring casing wall 8 along fixing and burner shell 9 bottoms, form upper and lower ring casing 15,16 between burner shell 9, tubular type premixed device 10, the following ring casing wall 7,8, form spout 18 between the following ring casing wall 7,8, spray gun 11,12 be arranged on last ring casing 15 corresponding burner shells 9 on, filling tube 13,14 be arranged on following ring casing 17 corresponding burner shells 9 on.Flange 2 is welded on the tubular type shaft 3.Burner 1 is by ring casing wall 8 and flange 2 fix down. Spray salt device 4,5,6 is successively set on the shaft 3, and its three spray guns 19 are welded on the shaft 3 corresponding positions.Spray salt device 4 comprises: an end inclined weld of spray gun 19 is connected on the shaft 3, welding one cold chlorine carrier gas pipe 22 on spray gun 19 walls, spray gun 19 the other ends connect rotation and give salt valve 20, and rotation interconnects rock salt hopper 21, equaler 23, Pneumatic butterfly valve 24, the rock salt tank 25 that its sidewall is welded with equaler for the other end of salt valve 20 successively; Spray salt device 5,6 its structures are formed with spray salt device 4.The angle in spray gun 11,12,19 and shaft cross section is 30 °, and spout 18 is 45 ° with the angle in shaft cross section.Entrance of cooling water is 28, and cooling water outlet is 29, and hot oxygen inlet passage is 26, and the resultant of reaction exit passageway is 27.
Principle of work of the present utility model is: the high-temperature oxygen that enters premixed device by passage (26) with enter ring casing (17) by feed-pipe (13), (14) and spray into TiCl in the stove by spout (18)
4, form cross jet, carry out the mixing of molecularity rapidly and uniformly, and the realization rapid reaction, enter the secondary oxygen of ring casing (15) by spray gun (11), (12), cool off the tubular type premixed device on the one hand, itself be heated again simultaneously, its heat energy is fully used, weakened TiCl on the other hand again
4Near scabbing spout (18) is located.Through the artificial titanium white scar material of metering, be that carrier gas is sprayed in the stove at a high speed by burner spray gun (13), (14) respectively with nitrogen (or air), be that carrier gas sprays in the stove through the rock salt that measures with nitrogen (or nitrogen or air).The artificial titanium white scar material that sprays into by the burner spray gun wherein, through ring casing (15) and passage (16) at axial downward high-speed motion along the furnace wall, the rock salt solids that spray into by spray gun 3 (19), kinetic energy by main air stream in the stove makes it have certain speed, removes the scar floor in furnace high-temperature district and washes away furnace wall wadding material scar floor.
It is periodically to start that the burner spray gun removes scar, and every 15～60 minutes every rifle grit blasts once, its injecting time is 0.1～0.5 second, and it sprays the grain amount is 20～30g.
Artificial titanium white scar material is chosen the high-quality titanium white and is made, and makes its particle have certain intensity and hardness.After artificial scar material economy-combat pulp-water soaks, can both recover original granularity in the short period of time, can and TiO
2Work in-process carry out aftertreatment together, become the titanium white finished product.
Spray salt device is uninterruptedly to spray salt, and rock salt also is easy to remove, and is pollution-free to product.
In the device of present embodiment 1, produce, and resulting result.Example one:
Oxygen: temperature: 1500～1800 ℃, add-on: 900～910kg/h
TiCl
4: temperature: 520～20 ℃
Add-on: 5000kg/h
Burner spray gun grit blast amount: 20～30g/ time rifle
Injecting time: 0.1～0.5 second/time rifle
Cycle: 15～60 minutes/time rifles
Rock salt straying quatity: 10～20kg/h
Operation under these conditions, it is remarkable to remove the scar effect, and the stove inner working face is smooth, and quality product reaches the level in kind of U.S. R-902.Example two:
TiCl
4The gaseous oxidation device, producing per year under 1.5 ten thousand tons of rated loads, move 122 hours, initiatively stop, the oxidation reactor strip inspection, the stove inner working face is smooth, and the quartz sand that index is better than U.S. K-M company introduction removes the scar method, and the half-finished leading indicator of oxidation: granularity, size-grade distribution, reducing power etc. meet and exceed the level in kind that U.S.A encloses R-902.
| The utility model | K---M company quartz sand removes scar | ||
| Solid particulate | Rock salt | Artificial scar material | Quartz sand |
| Internal circulating load (kg/t TiO 2) | / | / | 250 |
| Consumption (kg/t TiO 2) | 10 | 0.25 | 40 |
| Optional equipment | / | / | Need increase preheating, separating device |
Claims (4)
1. a chloride process titanium dioxide grit blast comprises except that the scar oxidation reactor: burner (1), flange (2), tubular type shaft (3), spray salt device (4); Wherein burner (1) is between two ring flanges (2), and burner (1) bottom is by ring casing wall (7) and following flange seal welding down; Wherein tubular type shaft (3) seal welding is on the another side of lower flange, and another piece flange seal is fixed on tubular type premixed device (10) top of burner (1); Along fixing with burner shell (9) inner wall sealing suitable for reading, the end opening seal welding of burner shell (9) is on ring casing (7) bottom (8) down by the disk of the tubular type premixed device (10) that has the disk edge for burner (1); Spray gun (11,12) is welded on burner shell (9) wall; Following ring casing (7) wall has a ladder round platform on being, in a through hole is arranged, have down the cylinder of a cone surface; Form grit blast passage (16), form upper and lower ring casing (15), (17) between burner shell (9), premixed device (10), following ring casing wall (7), (8), form spout (18) between following ring casing wall (7), (8), filling tube (13), (14) be arranged on burner shell (9) with the corresponding wall of following ring casing (17) on; Spray salt device (4), (5), (6) seal welding are on shaft (3), it is characterized in that: n spray salt device arranged, its spray salt device is connected on the shaft (3) by an end inclined weld of spray gun (19), welding one cold chlorine carrier gas pipe (22) on spray gun (19) wall, spray gun (19) the other end connects rotation and gives salt valve (20), rotation interconnect its sidewall successively for the other end of salt valve (20) to be welded with rock salt hopper (21), Pneumatic butterfly valve (24), the rock salt tank (25) of equaler (23) integrally welded; The described premixed device that has the disk edge is a hollow garden tube.
2. remove the scar oxidation reactor by the described a kind of chloride process titanium dioxide grit blast of claim 1, it is characterized in that: the described n of having spray salt device, n is at least 2.
3. remove the scar oxidation reactor by the described a kind of chloride process titanium dioxide grit blast of claim 1, it is characterized in that: the angle that described spray gun (11), (12), (19) inclined weld are connected on the shaft (3) is to be with the shaft cross section: 0～30 ° angle.
4. remove the scar oxidation reactor by the described a kind of chloride process titanium dioxide grit blast of claim 1, it is characterized in that: described spout (18) is 0～60 ° with the angle in shaft cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00243616 CN2433247Y (en) | 2000-07-18 | 2000-07-18 | Titanium white grit scar removing oxidizing reactor by chorination route |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00243616 CN2433247Y (en) | 2000-07-18 | 2000-07-18 | Titanium white grit scar removing oxidizing reactor by chorination route |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2433247Y true CN2433247Y (en) | 2001-06-06 |
Family
ID=33603459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00243616 Expired - Fee Related CN2433247Y (en) | 2000-07-18 | 2000-07-18 | Titanium white grit scar removing oxidizing reactor by chorination route |
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| Country | Link |
|---|---|
| CN (1) | CN2433247Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100478279C (en) * | 2004-10-28 | 2009-04-15 | 中国科学院过程工程研究所 | Method and apparatus for preparing titanium dioxide by oxidation reactor |
| CN101279763B (en) * | 2008-05-22 | 2011-07-27 | 中国科学院过程工程研究所 | Chloride process titanium dioxide reactor |
| CN103723767A (en) * | 2013-12-09 | 2014-04-16 | 云南新立有色金属有限公司 | Continuous feeding device for scab removing sand and titanium dioxide production device adopting chlorination process |
| CN107697949A (en) * | 2017-11-13 | 2018-02-16 | 龙蟒佰利联集团股份有限公司 | A kind of sulfuric acid process falls kiln product and is used for the production process of titanium pigment that chloridising removes scar sand |
| CN110817953A (en) * | 2019-10-29 | 2020-02-21 | 山东鲁北企业集团总公司 | Scar preventing and removing system and method for oxidation reactor |
-
2000
- 2000-07-18 CN CN 00243616 patent/CN2433247Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100478279C (en) * | 2004-10-28 | 2009-04-15 | 中国科学院过程工程研究所 | Method and apparatus for preparing titanium dioxide by oxidation reactor |
| CN101279763B (en) * | 2008-05-22 | 2011-07-27 | 中国科学院过程工程研究所 | Chloride process titanium dioxide reactor |
| CN103723767A (en) * | 2013-12-09 | 2014-04-16 | 云南新立有色金属有限公司 | Continuous feeding device for scab removing sand and titanium dioxide production device adopting chlorination process |
| CN103723767B (en) * | 2013-12-09 | 2015-11-25 | 云南新立有色金属有限公司 | Except continuous feeding and the Titanium Dioxide Produced by Chloride Procedure production equipment of scar sand |
| CN107697949A (en) * | 2017-11-13 | 2018-02-16 | 龙蟒佰利联集团股份有限公司 | A kind of sulfuric acid process falls kiln product and is used for the production process of titanium pigment that chloridising removes scar sand |
| CN107697949B (en) * | 2017-11-13 | 2023-09-08 | 龙佰集团股份有限公司 | Titanium dioxide production process for chloridizing scar-removing sand by sulfuric acid method kiln dropping product |
| CN110817953A (en) * | 2019-10-29 | 2020-02-21 | 山东鲁北企业集团总公司 | Scar preventing and removing system and method for oxidation reactor |
| CN110817953B (en) * | 2019-10-29 | 2022-02-18 | 山东鲁北企业集团总公司 | Scar preventing and removing system and method for oxidation reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |