CN107720816A - A kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide - Google Patents
A kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide Download PDFInfo
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- CN107720816A CN107720816A CN201711119439.6A CN201711119439A CN107720816A CN 107720816 A CN107720816 A CN 107720816A CN 201711119439 A CN201711119439 A CN 201711119439A CN 107720816 A CN107720816 A CN 107720816A
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- reative cell
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
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Abstract
The invention discloses a kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide, including reactor body, reactor body includes reaction outer tube and reaction inner tube, reaction inner tube is embedded in reaction outer tube and reaction inner tube is provided with multiple steam vents, react one end connection pumping device of inner tube, its other end is cecum, and the cecum for reacting inner tube does not contact with reaction outer tube；The space reacted inner tube and reacted between outer tube forms reative cell, and spoiler is installed with reative cell, and spoiler is used to disturb mixed airflow.High-temperature tubular reactor provided by the present invention for producing rutile titanium dioxide, mainly solve the problems, such as that mixing present in existing high-temperature tubular reactor is uneven, reaction product conversion is low, the yield of titanium dioxide is improved, due to extending the reaction time, titanium dioxide has the enough reaction time to be completely converted into rutile titanium dioxide, which thereby enhances the degree of purity of product.
Description
Technical field
It is more particularly to a kind of to be used to produce rutile titanium dioxide the present invention relates to titanium dioxide production apparatus field
High-temperature tubular reactor.
Background technology
The preparation method of Nano titanium dioxide mainly includes Physical and chemical method, Physical mainly include sputtering method,
Thermal evaporation and laser evaporization method, chemical method mainly include liquid phase method and vapor phase method, liquid phase method mainly include sluggish precipitation and
Sol-gel process, vapor phase method mainly include TiCl4Vapour phase oxidation process, typically use TiCl at present4Vapour phase oxidation process is received to prepare
Rice titanium dioxide.TiCl4Vapour phase oxidation process is usually with nitrogen as TiCl4Carrier gas, using oxygen as oxidant, in high temperature
Oxidation reaction is carried out in tubular reactor, through gas solid separation, obtains nanometer level titanium dioxide powder.
Because reaction is to carry out at high temperature（Reaction temperature reaches more than 550 DEG C）, this property to high-temperature tubular reactor
It can require strict, meanwhile, TiCl4And O2Reaction be not to obtain exclusive product, oxygen deficiency and reaction temperature deficiency feelings
Under condition, TiCl4And O2Reaction can generate Ti2O3Cl2, this is obviously unfavorable for obtaining product nano titanium oxide, moreover, existing pipe
Formula structure of reactor existing defects, because reactant and product residence time in pipe are very short, TiCl4And O2Mixing
Cheng Zhong, has that mixing uneven, reaction product conversion is low, the halfway problem of reaction, thus causes nano titanium oxide yield
Relatively low, products pure degree is inadequate, and wastage of material is more.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, there is provided one kind is used to produce rutile-type dioxy
Change the high-temperature tubular reactor of titanium, mainly solve that mixing present in existing high-temperature tubular reactor is uneven, reaction product turns
Change the problem of low, by setting double pipe structure and spoiler, increase the flow-disturbing effect in pipe, and then make its mixing more abundant, instead
It should carry out thoroughly, the yield of titanium dioxide improves, and titanium dioxide has the enough reaction time to be converted into rutile-type titanium dioxide
Titanium, thus improve the degree of purity of product.
The technical solution adopted by the present invention is as follows：A kind of high-temperature tubular reaction for being used to produce rutile titanium dioxide
Device, including reactor body, it is characterised in that reactor body includes reaction outer tube and reaction inner tube, and reaction inner tube is embedded in
In reaction outer tube and reaction inner tube is provided with multiple steam vents, reacts one end connection pumping device of inner tube, its other end is blind
End, the cecum for reacting inner tube do not contact with reaction outer tube；The space reacted inner tube and reacted between outer tube forms reative cell, reaction
Interior is installed with spoiler, and spoiler is used to disturb mixed airflow.
Due to the setting of said structure, TiCl is passed through into reative cell by reative cell and reaction inner tube first4Gas phase is mixed
Compound and O2, because the direction of injection is different, air-flow caused by two kinds of raw materials collides mixing in reative cell, Jin Erda
To the technique effect that mixing is abundant, flow-disturbing is big, for the mixed airflow of formation under the flow-disturbing effect of spoiler, flow-disturbing effect is entered one
Step amplification, residence time of the mixed airflow in reative cell is significantly extended, and then reactant is had time enough
Reaction, the anatase titanium dioxide being initially generated have enough time to be completely converted into rutile titanium dioxide, thus,
While improving the yield of titanium dioxide, the degree of purity of product rutile titanium dioxide is improved, solves existing high temperature pipe
Technological deficiency present in formula reactor.
In order to preferably implement the present invention, isolate to form the first reative cell and the second reaction by division board in reative cell
Room, the first reative cell and the second reative cell are located at the both sides of reaction inner tube respectively, and the first reative cell and the second reative cell pass through anti-
The space between cecum of the cecum of inner tube with reacting outer tube is answered to connect, the first reative cell is used to be passed through reaction into reative cell
Thing, the second reative cell are used to discharge the reactant and product in reative cell, and spoiler is located in the second reative cell.
Further, the first reative cell is passed through reactant into reative cell by gas inlet pipe, and the second reative cell passes through gas
Reactant and product in body efferent duct discharge reative cell, gas inlet pipe and gas output tube are respectively and fixedly installed to remote
React one end of inner tube cecum.
Further, in order to improve flow-disturbing effect, the shape of spoiler matches with the shape of cross section of the second reative cell, with
Second reative cell is divided into stage casing reative cell and end reaction room, latter end reative cell is used to discharging mixed airflow, on spoiler
Provided with the through hole passed through for air-flow.
In order to while flow-disturbing effect is improved, ensure productivity ratio, the through hole of uniform curved structure, through hole on spoiler
Width be not less than 3 times of flow-disturbing plate thickness.
In order to further extend the residence time of mixed airflow, the cross section of spoiler is Z-shaped configuration, Z-shaped configuration
Both ends respectively with reaction outer tube and react inner tube be connected.
In the present invention, it is contemplated that reaction is carried out in the high temperature more than 800 DEG C, the spoiler made by general material
Needed for can not meeting, simultaneously, it is contemplated that contain oxidant in reactant and product, in order that spoiler has at high temperature
Intensity and corrosion resistance well, the spoiler are formed with Ni-Fe based high-temperature alloy material manufactures, by mass percentage,
The Ni-Fe based high-temperature alloys material includes following alloying element：C：0.04-0.05%、Fe：19.0-21.0%、Cr：19.5-
20.5%、Al:0.90-1.05%、Ti：2.65-2.80%、V：0.20-0.30%、Mo：2.0-2.5%、Nb：1.50-1.70%、Y+
Ce：0.046-0.058%、B：0.003-0.006%, surplus are Ni and other impurity.
In above-mentioned, the tensile strength of Ni-Fe based high-temperature alloy materials of the invention reaches 1270N/mm2, yield strength reaches
To 1030 N/mm2, toughness reaches 12.1 J/cm2, the rate of corrosion minimum 0.031 mm/ months, therefore disclosure satisfy that reactor body
To the needs of spoiler performance, it has outstanding mechanical behavior under high temperature and anti-flue gas corrosion performance, is less prone at high temperature
Crackle and deformation, solves the problems, such as spoiler high temperature applicability.
In the present invention, the preparation method of Ni-Fe based high-temperature alloys material comprises the following steps：
1）Weigh raw material by component percentages, using it is existing smelting high temperature alloy preparation technology, in vaccum sensitive stove in
Melting is carried out at 1500 DEG C, solution pours into alloy casting blank；
2）Alloy casting blank is subjected to removing surface, be subsequently placed in vacuum furnace be heated to 810-820 DEG C and remove alloy casting
The oxide skin on base surface, obtain forging blank, wherein heating rate control is in 120 DEG C/h；
3）Forging blank is continued to be heated to forging temperature to be forged, room temperature is air-cooled to after forging, and be surface-treated；
4）Produced after forge piece after surface treatment is carried out into solid-solution and aging heat treatment.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：A kind of use provided by the invention
In the high-temperature tubular reactor of production rutile titanium dioxide, mainly solves the mixing present in existing high-temperature tubular reactor
Uneven, reaction product converts the problem of low, by setting double pipe structure and spoiler, increases the flow-disturbing effect in pipe, makes
Reactant mixing is more abundant, and reaction carries out thoroughly, and the yield of titanium dioxide is improved, simultaneously as in reative cell
Residence time reached and significantly extended, titanium dioxide has the enough reaction time to be completely converted into rutile titanium dioxide,
Which thereby enhance the degree of purity of product.
Brief description of the drawings
Fig. 1 is a kind of high-temperature tubular reactor front cross-sectional structure for being used to produce rutile titanium dioxide of the present invention
Schematic diagram；
Fig. 2 is the high-temperature tubular reactor side, sectional structural representation of the present invention；
Fig. 3 is the spoiler main structure diagram of the present invention.
Marked in figure：1 is reactor body, and 2 be reaction outer tube, and 3 be reaction inner tube, and 4 be potted component, and 5 be sealed end,
6 be gas inlet pipe, and 7 be gas output tube, and 8 be division board, and 9 be the first reative cell, and 10 be the second reative cell, and 11 be support
Plate, 12 be spoiler, and 1201 be through hole, and 13 be stage casing reative cell, and 14 be end reaction room.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As depicted in figs. 1 and 2, a kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide, including reaction
Device body 1, reactor body 1 include reaction outer tube 2 and reaction inner tube 3, and reaction inner tube 3 is embedded in reaction outer tube 2 and reacted
Inner tube 3 is provided with multiple steam vents（It is not drawn into figure）, the one end for reacting outer tube 2 forms sealed end by the sealing of potted component 4
5, its other end is cecum；One end connection pumping device of inner tube 3 is reacted, its other end is cecum, reacts the cecum court of inner tube 3
To the cecum direction of reaction outer tube 2, and the cecum for reacting inner tube 3 does not contact with reaction outer tube；React inner tube 3 and reaction outer tube 2
Between space form reative cell, spoiler 12 is installed with reative cell, spoiler 12 is used to disturb mixed airflow.
TiCl is passed through into reative cell by reative cell and reaction inner tube 3 first4Gas phase mixture and O2, due to injection
Direction is different, air-flow caused by two kinds of raw materials collides mixing in reative cell, and then mix fully, flow-disturbing greatly
Technique effect, the mixed airflow of formation is under the flow-disturbing effect of spoiler, and flow-disturbing effect is further magnified, and mixed airflow is anti-
Residence time that should be indoor is significantly extended, and then makes reactant that there is time enough to react, the rutile titania being initially generated
Type titanium dioxide has enough time to be completely converted into rutile titanium dioxide, thus, is improving the yield of titanium dioxide
While, the degree of purity of product rutile titanium dioxide is improved, solves the skill present in existing high-temperature tubular reactor
Art defect.
In one embodiment of the invention, it is anti-by isolation the first reative cell 9 and second of formation of division board 8 in reative cell
Room 10 is answered, the first reative cell 9 and the second reative cell 10 are respectively positioned at the both sides of reaction inner tube 3, the first reative cell 9 and the second reaction
Room 10 is connected by the space between reacting cecum of the cecum of inner tube 3 with reacting outer tube 2, and the first reative cell 9 is used for reaction
Interior is passed through reactant, and the second reative cell 10 is used to discharge the reactant and product in reative cell, and spoiler is anti-positioned at second
Should interior.
Further, the first reative cell 9 is passed through reactant, the second reative cell 10 into reative cell by gas inlet pipe 6
Reactant and product in reative cell is discharged by gas output tube 7, gas inlet pipe 6 and gas output tube 7 are fixed respectively
It is mounted remotely from one end of the reaction cecum of inner tube 2.As shown in figure 1, gas inlet pipe 6 and gas output tube 7 are positioned at reaction outer tube
Sealed end 5, gas inlet pipe 6 and gas output tube 7 are respectively turned on the first reative cell 9 and the second reaction through potted component 4
The end of room 10, gas inlet pipe 6 and gas output tube 7 is fixed by supporting plate 11.
In one embodiment of the invention, in order to improve flow-disturbing effect, the shape of spoiler 12 is with the second reative cell 10
Shape of cross section match, the second reative cell 10 is divided into stage casing reative cell 13 and end reaction room 14, latter end reaction
Room 14 is used to discharge mixed airflow, and spoiler 12, which is provided with, is used for the through hole 1201 that air-flow passes through.
In order to while flow-disturbing effect is improved, ensure productivity ratio, the through hole of uniform curved structure on spoiler 12
1201, as shown in figure 3, the width of through hole 1201 is not less than 3 times of the thickness of spoiler 12.
In order to further extend the residence time of mixed airflow, the cross section of spoiler 12 is Z-shaped configuration, Z-shaped knot
The both ends of structure are connected with reaction outer tube 2 and reaction inner tube 3 respectively.
In the present invention, it is contemplated that reaction is carried out in the high temperature more than 800 DEG C, the spoiler made by general material
Needed for can not meeting, simultaneously, it is contemplated that contain oxidant in reactant and product, in order that spoiler has at high temperature
Intensity and corrosion resistance well, the spoiler are formed with Ni-Fe based high-temperature alloy material manufactures, by mass percentage,
The Ni-Fe based high-temperature alloys material includes following alloying element：C：0.04-0.05%、Fe：19.0-21.0%、Cr：19.5-
20.5%、Al:0.90-1.05%、Ti：2.65-2.80%、V：0.20-0.30%、Mo：2.0-2.5%、Nb：1.50-1.70%、Y+
Ce：0.046-0.058%、B：0.003-0.006%, surplus are Ni and other impurity.
In above-mentioned, the preparation method of Ni-Fe based high-temperature alloy materials comprises the following steps：
1）Weigh raw material by component percentages, using it is existing smelting high temperature alloy preparation technology, in vaccum sensitive stove in
Melting is carried out at 1500 DEG C, solution pours into alloy casting blank；
2）Alloy casting blank is subjected to removing surface, be subsequently placed in vacuum furnace be heated to 810-820 DEG C and remove alloy casting
The oxide skin on base surface, obtain forging blank, wherein heating rate control is in 120 DEG C/h；
3）Forging blank is continued to be heated to forging temperature to be forged, room temperature is air-cooled to after forging, and be surface-treated；
4）Produced after forge piece after surface treatment is carried out into solid-solution and aging heat treatment.
In step 3）In, forging temperature is 1200-1250 DEG C, time 2-3h, and starting forging temperature is 1150 DEG C, stops forging temperature
For 850 DEG C.Starting forging temperature and the selection for stopping forging temperature are extremely important, in addition to according to the selection of conventional forging temperature requirement, necessarily
It is noted that the width range of forging temperature and the terminal of forging temperature, the terminal of forging temperature is too high, and forging blank is not easy
The fine and closely woven tissue of crystal grain is obtained, mechanical property is poor, and the terminal of forging temperature is too low, then phase transformation crackle easily occurs, in this hair
In bright, forging temperature be 1200-1250 DEG C, starting forging temperature be 1150 DEG C, stop forge temperature be 850 DEG C when, forging blank be easy to get to
Satisfactory forging.
In order to obtain the forging base that crack defect is few, crystal grain is fine and closely woven and is evenly distributed, after forging blank reaches forging temperature,
Blank upsetting pull, which will be forged, using forge press becomes shape forging formation forging base, wherein, fire time is 4, and forging ratio control is in 6.2-
6.5, upsetting pull process need to be carried out 3 times respectively.
Further, in step 3）In, forging base is cooled to stop forging temperature after, continue to deliver in forge press upsetting pull and become
Die forging causes certain thickness alloy slab, and fire time is 4, and forging ratio control need to be carried out 3 times respectively in 2.0-2.3, upsetting pull process, with
Final getable alloy slab metallographic structure is more refined, be more evenly distributed, the defects of gentle hole clip of flawless is miscellaneous is present.
Further, in step 4）In, the detailed process of solid-solution and aging heat treatment is：Solid solubility temperature is 1100-1150 DEG C,
It is incubated 2h, oil cooling；700-750 DEG C of an aging temperature, it is incubated 20-25h, air cooling；Secondary ageing treatment temperature 660-680
DEG C, it is incubated 20-25h, air cooling.
In order to which the present invention is better described, table 1 lists section Example：
The Ni-Fe based high-temperature alloys material composi of table 1 and content（Impurity is omitted herein）
The main performance of Ni-Fe based high-temperature alloys material is as shown in table 2 made from above-described embodiment：
The main performance of the embodiment 1-5 final alloy materials of table 2
Note：1st, toughness is determined by Charpy impact machine tester；
2nd, etching extent uses 65% nitric acid corrosion tests, that is, is put into sample in 65% salpeter solution of boiling when testing continuous
48h is a cycle, in totally 5 cycles, finally calculates average corrosion rate, wherein, sample is in its cooling at 750-850 DEG C
To 100 DEG C or so rear experiments.
It can be obtained by table 2, at 850 DEG C, the tensile strength of Ni-Fe based high-temperature alloy materials of the invention reaches
1270N/mm2, yield strength reaches 1030 N/mm2, toughness reaches 12.1 J/cm2, the rate of corrosion minimum 0.031 mm/ months, because
This disclosure satisfy that needs of the reactor body 1 to the performance of spoiler 12, its at high temperature have outstanding mechanical behavior under high temperature and
Anti- flue gas corrosion performance, is less prone to crackle and deformation, solves the problems, such as spoiler high temperature applicability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (8)
1. a kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide, including reactor body, it is characterised in that
Reactor body includes reaction outer tube and reacts inner tube, and reaction inner tube is embedded in reaction outer tube and reaction inner tube is provided with multiple
Steam vent, one end connection pumping device of inner tube is reacted, its other end is cecum, reacts the cecum of inner tube not with reacting external pipe connection
Touch；The space reacted inner tube and reacted between outer tube forms reative cell, is installed with spoiler in reative cell, spoiler is used for
Disturb mixed airflow.
2. the high-temperature tubular reactor as claimed in claim 1 for being used to produce rutile titanium dioxide, it is characterised in that anti-
Indoor it should isolate to form the first reative cell and the second reative cell by division board, the first reative cell and the second reative cell are located at respectively
The both sides of inner tube, the first reative cell and the second reative cell are reacted by reacting between the cecum of inner tube and the cecum of reaction outer tube
Space connects, and the first reative cell is used to be passed through reactant into reative cell, and the second reative cell is used to discharge the reaction in reative cell
Thing and product, spoiler are located in the second reative cell.
3. the high-temperature tubular reactor as claimed in claim 2 for being used to produce rutile titanium dioxide, it is characterised in that the
One reative cell is passed through reactant into reative cell by gas inlet pipe, and the second reative cell discharges reative cell by gas output tube
Interior reactant and product, gas inlet pipe and gas output tube are respectively and fixedly installed to one away from reaction inner tube cecum
End.
4. the high-temperature tubular reactor as claimed in claim 2 for being used to produce rutile titanium dioxide, it is characterised in that disturb
The shape of flowing plate matches with the shape of cross section of the second reative cell, and the second reative cell is divided into stage casing reative cell and end
Reative cell, latter end reative cell are used to discharge mixed airflow, and spoiler, which is provided with, is used for the through hole that air-flow passes through.
5. the high-temperature tubular reactor as claimed in claim 1 for being used to produce rutile titanium dioxide, it is characterised in that disturb
The through hole of uniform curved structure in flowing plate, the width of through hole are not less than 3 times of flow-disturbing plate thickness.
6. the high-temperature tubular reactor as claimed in claim 5 for being used to produce rutile titanium dioxide, it is characterised in that disturb
The cross section of flowing plate is Z-shaped configuration, and the both ends of Z-shaped configuration are connected with reaction outer tube and reaction inner tube respectively.
7. the high-temperature tubular reactor as claimed in claim 1 for being used to produce rutile titanium dioxide, it is characterised in that institute
Spoiler is stated to be formed with Ni-Fe based high-temperature alloy material manufactures, by mass percentage, the Ni-Fe based high-temperature alloys material
Including following alloying element：C：0.04-0.05%、Fe：19.0-21.0%、Cr：19.5-20.5%、Al:0.90-1.05%、Ti：
2.65-2.80%、V：0.20-0.30%、Mo：2.0-2.5%、Nb：1.50-1.70%、Y+Ce：0.046-0.058%、B：0.003-
0.006%, surplus is Ni and other impurity.
8. the high-temperature tubular reactor as claimed in claim 7 for being used to produce rutile titanium dioxide, it is characterised in that
The preparation method of Ni-Fe based high-temperature alloy materials comprises the following steps：
1）Weigh raw material by component percentages, using it is existing smelting high temperature alloy preparation technology, in vaccum sensitive stove in
Melting is carried out at 1500 DEG C, solution pours into alloy casting blank；
2）Alloy casting blank is subjected to removing surface, be subsequently placed in vacuum furnace be heated to 810-820 DEG C and remove alloy casting
The oxide skin on base surface, obtain forging blank, wherein heating rate control is in 120 DEG C/h；
3）Forging blank is continued to be heated to forging temperature to be forged, room temperature is air-cooled to after forging, and be surface-treated；
4）Produced after forge piece after surface treatment is carried out into solid-solution and aging heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119439.6A CN107720816A (en) | 2017-11-14 | 2017-11-14 | A kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119439.6A CN107720816A (en) | 2017-11-14 | 2017-11-14 | A kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide |
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| Publication Number | Publication Date |
|---|---|
| CN107720816A true CN107720816A (en) | 2018-02-23 |
Family
ID=61215315
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711119439.6A Withdrawn CN107720816A (en) | 2017-11-14 | 2017-11-14 | A kind of high-temperature tubular reactor for being used to produce rutile titanium dioxide |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108822004A (en) * | 2018-08-30 | 2018-11-16 | 东营市科维生物技术有限公司 | The pipe reaction synthetic method and device of continuous production acesulfame potassium intermediate |
| CN113617295A (en) * | 2021-08-18 | 2021-11-09 | 中国科学院广州地球化学研究所 | Reaction furnace and material production process |
-
2017
- 2017-11-14 CN CN201711119439.6A patent/CN107720816A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108822004A (en) * | 2018-08-30 | 2018-11-16 | 东营市科维生物技术有限公司 | The pipe reaction synthetic method and device of continuous production acesulfame potassium intermediate |
| CN108822004B (en) * | 2018-08-30 | 2021-03-23 | 东营市科维生物技术有限公司 | Tubular reaction synthesis method and device for continuously producing acesulfame intermediate |
| CN113617295A (en) * | 2021-08-18 | 2021-11-09 | 中国科学院广州地球化学研究所 | Reaction furnace and material production process |
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Application publication date: 20180223 |