CN113041986B - Titanium dioxide oxidation reactor by chlorination process - Google Patents
Titanium dioxide oxidation reactor by chlorination process Download PDFInfo
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- CN113041986B CN113041986B CN202110289503.5A CN202110289503A CN113041986B CN 113041986 B CN113041986 B CN 113041986B CN 202110289503 A CN202110289503 A CN 202110289503A CN 113041986 B CN113041986 B CN 113041986B
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- hot oxygen
- air inlet
- inlet pipe
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 230000003647 oxidation Effects 0.000 title claims abstract description 22
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 17
- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 6
- 230000008569 process Effects 0.000 title claims description 17
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 117
- 238000010438 heat treatment Methods 0.000 claims abstract description 81
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000001301 oxygen Substances 0.000 claims abstract description 47
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 47
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000010791 quenching Methods 0.000 claims abstract description 12
- 230000000171 quenching effect Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 33
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 11
- 239000010720 hydraulic oil Substances 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 239000011819 refractory material Substances 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000011265 semifinished product Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 16
- 235000010215 titanium dioxide Nutrition 0.000 description 13
- 230000009471 action Effects 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 8
- 229910003074 TiCl4 Inorganic materials 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a titanium dioxide oxidation reactor by a chlorination method, which comprises a heating section, a reaction section and a quenching section, wherein the heating section is integrally divided into a left section, a middle section and a right section, and the three sections are fixed together through a flange plate to form a furnace body; the middle part of the left end of the heating section is provided with a toluene gun interface, the outer diameter surface of the left end of the heating section is provided with one to four hot oxygen inlet pipe orifices, the hot oxygen inlet pipe orifices are distributed on the heating section in an annular array with the center of the heating section as the center, and the hot oxygen inlet pipe orifices form an included angle of 60 to 85 degrees with the axis of the heating section. According to the invention, by utilizing reasonable arrangement of the hot oxygen inlet pipe orifices, the hot oxygen flows forwards in a spiral way along the axial direction of the inner wall of the heating section after entering the heating section, so that the inner wall of the equipment is prevented from being directly burnt by flame, and the service life of the equipment is prolonged; the titanium tetrachloride air chamber adopting the volute design can effectively ensure the flow pressure stability of titanium tetrachloride, so that hot oxygen and titanium tetrachloride are fully mixed for reaction, and the quality of a semi-finished product base material generated by the reaction is improved.
Description
Technical Field
The invention belongs to the technical field of titanium dioxide production, and particularly relates to a titanium dioxide oxidation reactor by a chloride process.
Background
The oxidation reactor is core equipment in the production process of the titanium dioxide by the chloride process, and is a key factor influencing whether the whole titanium dioxide device by the chloride process can normally operate or not and whether high-quality products can be produced or not. In the industrial chloride process titanium white production process, tiCl4 and O2 react in a very short time under the conditions of high temperature and pressure, and micron-sized TiO2 particles are generated. In the reaction process, the particle size distribution of the product reaches the requirement of pigment-grade TiO2 by solving the problem of (1) and reasonable reactor structure. (2) The reasonable structural design of the heating section ensures that O2 is uniformly heated from 900 ℃ to about 1600 ℃ in a short time. (3) The temperature of the heating section is very high, the temperature of the toluene combustion zone is up to 3000 ℃, and reasonable equipment structure is selected to enable the flow field to be reasonable, so that the service life of equipment is ensured. (4) The TiCl4 material is suitable for corrosion resistance and abrasion resistance, and the TiCl4 material is highly corrosive and eroded by high-speed airflow at the outlet of the TiCl4 feeding ring. (5) The TiCl4 feeding ring with special design is adopted to ensure that radial TiCl4 gas is added in a uniform pressure and steady flow amount, so that the granularity of the product is uniform, (6) the TiCl4 feeding ring is protected by a reasonable cooling mode, and (7) fine TiO2 particles are easy to adhere to walls and reliable scar prevention and scar removal measures are required.
Under such severe process conditions, the oxidation reactor in China has a plurality of defects:
1. the heating section directly operates at the high temperature of the mixture of hot oxygen and toluene flame, the service life of the lining of the equipment is quite short, and the refractory material needs to be replaced periodically;
2. The reason of the equipment structure causes that the adding flow and pressure of the titanium tetrachloride in the mixing section are not uniform enough, and the quality and the operation effect of the oxidized base material product are affected;
3. when the toluene gun is inserted into the heating section through the toluene gun interface to provide combustion, and then the toluene gun is taken out, the countercurrent of the thermal mass in the heating section is easy to cause;
4. When the gas burns in the heating section, the gas is easy to generate high temperature and high pressure at the moment of combustion, so that the inside of the heating section is easy to be damaged.
Therefore, it is necessary to invent a chloride process titanium dioxide oxidation reactor to solve the above problems.
Disclosure of Invention
In order to solve the problems, the invention provides a titanium dioxide oxidation reactor by a chloride process, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the chlorination process titanium dioxide oxidation reactor comprises a heating section, a reaction section and a quenching section, wherein the heating section is integrally divided into a left section, a middle section and a right section, and the three sections are fixed together through a flange plate to form a furnace body; the middle part of the left end of the heating section is provided with a toluene gun interface, the outer diameter surface of the left end of the heating section is provided with one to four hot oxygen inlet pipe orifices, the hot oxygen inlet pipe orifices are distributed on the heating section in an annular array with the center of the heating section as the center, and an included angle of 60 to 85 degrees is formed between the hot oxygen inlet pipe orifices and the axial lead of the heating section;
The right end of the heating section is communicated with the reaction section, the reaction section is composed of an air inlet chamber and feeding rings, the air inlet chamber is of a volute type annular structure, a plurality of feeding rings are fixed on the inner wall of the air inlet chamber, a pipe channel is formed between two adjacent feeding rings, a high-resistant Wen Bianjing ceramic pipe is fixed on the inner wall of the pipe channel, and the diameter-changing ceramic pipe is a ceramic pipe with gradually reduced outside-in diameter;
The air inlet chamber is provided with titanium tetrachloride air inlet, and simultaneously the air inlet chamber is provided with a reaction section air inlet and a reaction section air outlet along the axial direction of the hot section, the reaction section air inlet is communicated with the right end of the heating section, the reaction section air outlet is communicated with the left end of the quenching section, the quenching section is a gas-liquid heat exchanger, and the base material from the reaction section enters the gas-liquid heat exchanger for heat exchange and cooling.
Further, the number of the pipe channels is four to twelve, the body of the heating section is composed of a shell and a fireproof heat insulation material, the shell is made of nickel-based alloy materials, and the fireproof heat insulation material lining is fixed on the inner wall of the shell.
Further, the hot oxygen inlet pipe orifice and the heating section can be arranged in a vertical tangential mode, refractory materials are lined in the hot oxygen inlet pipe orifice, a beveling hole is formed in the heating section, an oxygen inlet pipe orifice channel is connected with the beveling hole, the beveling hole and the hot oxygen inlet pipe orifice channel are arranged through casting of the refractory materials in an integrated mode, and an axial included angle between the beveling notch and the heating section is 45-75 degrees.
Furthermore, the inner diameter of the internal cavity structure of the volute type annular structure of the air inlet chamber can be sequentially and spirally reduced from large to small, and the air inlet chamber shell is made of nickel-based alloy steel plates; the feeding ring in the air inlet chamber is of a circular ring type solid structure, the material of the feeding ring is nickel-based alloy forging material, 8-16 pipe channels are uniformly distributed around the feeding ring, the pipe channels gradually shrink from outside to inside, and the inside of the pipe channels is tightly lined with a variable-diameter high-temperature-resistant ceramic pipe.
Further, toluene rifle interface one end has fixedly cup jointed and has widened the cover, it sets up as integrated into one piece to widen cover and toluene rifle interface, the toluene rifle interface is located the inside one section of widening the cover and has seted up widened the hole, the cross-sectional shape of widening the hole sets up for the rectangle, and interior roof and interior diapire all articulate there is the baffle, baffle surface through-connection has the arc pole, arc pole one end and widen hole inner wall fixed connection, and the surface cup joints first spring, it evenly sets up a plurality of guard slot to widen the one end that the cover is located the heating section inside, guard slot inside is provided with protector.
Further, the protector includes plunger and buffer spring, the plunger is accurate cooperation coupling piece slip setting with the shield groove inner wall, buffer spring both ends all are provided with the spring holder, and have seted up the bleeder vent between shield groove one end and the cover outside of widening, one of them the spring holder is located the bleeder vent position and is the through-hole setting, two be provided with hydraulic buffer between the spring holder.
Further, the hydraulic buffer device comprises a hydraulic cylinder and a push rod, one end of the push rod is in sliding connection with the inside of the hydraulic cylinder, the hydraulic cylinder is internally provided with hydraulic oil, the volume of the hydraulic oil is smaller than half of the volume of the hydraulic cylinder, a plurality of liquid inlet devices and liquid outlet devices are arranged between two sides of the piston in a penetrating manner, and the number of the liquid inlet devices is smaller than that of the liquid outlet devices.
Further, the liquid inlet device and the liquid outlet device all comprise an I-shaped channel, a sealing plug is arranged at one end inside the I-shaped channel, a T-shaped rod is movably connected to the surface of the sealing plug in a penetrating mode, a second spring is sleeved on the surface of the T-shaped rod, a filter plate is fixedly connected to one end of the T-shaped rod, the surface of the filter plate is uniformly arranged in a hole shape, the filter plate is fixedly connected with the inner wall of the I-shaped channel, and the directions of the sealing plugs inside the liquid inlet device and the liquid outlet device are opposite.
The invention has the technical effects and advantages that:
1. According to the invention, by utilizing reasonable arrangement of the hot oxygen inlet pipe orifices, the hot oxygen flows forwards in a spiral way along the axial direction of the inner wall of the heating section after entering the heating section, so that the inner wall of the equipment is prevented from being directly burnt by flame of a toluene gun, and the service life of the equipment is prolonged; the titanium tetrachloride air chamber adopting the volute design can effectively ensure the flow pressure stability of titanium tetrachloride, so that hot oxygen and titanium tetrachloride are fully mixed for reaction, and the quality of a semi-finished product base material generated by the reaction is improved.
2. According to the invention, the widened sleeve is arranged, and the baffle plates are propped open through the two baffle plates, so that the baffle plates recover the closing device under the action of the first spring, and the backflow of a thermal medium in the heating section is effectively prevented.
3. According to the invention, the protection device is arranged, so that the plunger piston in the protection groove is compressed, the plunger piston compresses the buffer spring, the space in the heating section is increased, and the high-pressure gas is used for pressing the inside of the protection groove, so that the damage caused by instant high pressure in the heating section is prevented.
4. The hydraulic buffer device is arranged, and the plunger slowly returns to the original position under the action of the buffer spring, so that the sealing plug in the liquid inlet device is pushed open, gas and hydraulic oil slowly flow to one side of the piston, and the plunger is prevented from rapidly returning to the original position under the action of the buffer spring to generate inertial force, so that the buffer spring and the plunger are prevented from falling off and being damaged.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic overall structure of an embodiment of the present invention;
FIG. 2 shows a cross-sectional view at A-A of FIG. 1 in accordance with the present invention;
FIG. 3 shows a cross-sectional view of the invention at B-B in FIG. 1;
FIG. 4 shows a cross-sectional view of the overall structure of an embodiment of the present invention;
FIG. 5 shows a left side view of the overall structure of an embodiment of the present invention;
FIG. 6 shows a left side view of the reaction section structure of an embodiment of the present invention;
FIG. 7 illustrates an enlarged view of portion A of FIG. 4 in accordance with an embodiment of the present invention;
FIG. 8 shows an enlarged view of portion B of FIG. 7 in accordance with an embodiment of the present invention;
FIG. 9 shows an enlarged view of portion C of FIG. 8 in accordance with an embodiment of the present invention;
In the figure: 1. a heating section; 2. a reaction section; 2a, a reaction section air inlet; 2b, a reaction section air outlet; 3. a quenching section; 4. a hot oxygen inlet pipe orifice; 401. oblique cuts; 5. a flange plate; 6. a refractory and heat insulating material; 7. toluene gun interface; 701. widening the sleeve; 702. widening the hole; 703. a baffle; 704. an arc-shaped rod; 705. a first spring; 706. a protective groove; 707. a plunger; 708. a buffer spring; 709. a spring seat; 710. ventilation holes; 711. a hydraulic cylinder; 712. a push rod; 713. a piston; 714. an I-shaped channel; 715. a sealing plug; 716. a T-bar; 717. a second spring; 718. a filter plate; 8. titanium tetrachloride air inlet; 9. a tube channel; 10. an intake chamber; 11. a feeding ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a titanium dioxide oxidation reactor by a chlorination method, which is shown in figures 1-9, and comprises a heating section 1, a reaction section 2 and a quenching section 3, wherein the heating section 1 is integrally divided into three sections which are left, middle and right, and the three sections are fixed together through a flange 5 to form a furnace body; the middle part of the left end of the heating section 1 is provided with a toluene gun interface 7, the outer diameter surface of the left end of the heating section 1 is provided with one to four hot oxygen air inlet pipe orifices 4, the hot oxygen air inlet pipe orifices 4 are distributed on the heating section 1 in an annular array with the center of the heating section 1 as the center, and the hot oxygen air inlet pipe orifices 4 form an included angle of 60 to 85 degrees with the axial lead of the heating section 1;
The right end of the heating section 1 is communicated with the reaction section 2, the reaction section 2 is composed of an air inlet chamber 10 and feeding rings 11, the air inlet chamber 10 is of a volute type annular structure, a plurality of feeding rings 11 are fixed on the inner wall of the air inlet chamber 10, a pipe channel 9 is formed between two adjacent feeding rings 11, a high-resistant Wen Bianjing ceramic pipe is fixed on the inner wall of the pipe channel 9, and the diameter-changing ceramic pipe is a ceramic pipe with gradually reduced outer diameter and inner diameter;
The air inlet chamber 10 is provided with a titanium tetrachloride air inlet 8, meanwhile, the air inlet chamber 10 is provided with a reaction section air inlet 2a and a reaction section air outlet 2b along the axial direction of the hot section, the reaction section air inlet 2a is communicated with the right end of the heating section 1, the reaction section air outlet 2b is communicated with the left end of the quenching section 3, the quenching section 3 is a gas-liquid heat exchanger, the base material from the reaction section 2 enters the gas-liquid heat exchanger for heat exchange and cooling, and by utilizing the reasonable layout of a hot oxygen air inlet pipe orifice 4, hot oxygen flows forwards spirally along the axial direction of the inner wall of the heating section 1 after entering the heating section, so that the inner wall of equipment is prevented from being directly burnt by flame, and the service life of the equipment is prolonged; the titanium tetrachloride air chamber adopting the volute design can effectively ensure the flow pressure stability of titanium tetrachloride, so that hot oxygen and titanium tetrachloride are fully mixed for reaction, and the quality of a semi-finished product base material generated by the reaction is improved.
As a specific embodiment of the present invention, the number of the pipe passages 9 is four to twelve, the body of the heating section 1 is composed of a shell and a refractory and heat-insulating material 6, the shell is made of nickel-based alloy material, and the refractory and heat-insulating material 6 is fixed on the inner wall of the shell in a lining manner.
For a specific embodiment of the invention, the hot oxygen inlet pipe orifice 4 and the heating section 1 can be vertically and tangentially arranged, and the inside of the hot oxygen inlet pipe orifice 4 is lined with refractory materials, the inside of the heating section 1 is provided with a chamfer hole 401, an oxygen inlet pipe orifice 4 channel is connected with the chamfer hole 401, the chamfer hole 401 and the hot oxygen inlet pipe orifice 4 channel are integrally formed and arranged through pouring refractory materials, the axial included angle between the chamfer hole 401 and the heating section 1 is 45-75 degrees, and the service life of the hot oxygen inlet pipe orifice 4 is prolonged by vertically arranging the hot oxygen inlet pipe orifice 4 and the outer surface of the heating section 1, so that the cutting stress of the hot Yang Jinqi pipe orifice 4 is effectively reduced.
For a specific embodiment of the present invention, the inner diameter of the internal cavity structure of the volute type annular structure of the air inlet chamber 10 may also be reduced from large to small in a spiral manner, and the housing of the air inlet chamber 10 is made of nickel-based alloy steel plate; the inside charging ring 11 of air inlet chamber 10 is ring type solid structure, its material is nickel base alloy forging material, 8-16 pipe passageway 9 are offered to charging ring 11 equipartition all around, pipe passageway 9 reduces from outside to inside diameter gradually, the inside tight lining reducing of pipe passageway 9 high temperature resistant ceramic pipe, inside the air inlet chamber 10 is got into to titanium tetrachloride through titanium tetrachloride air inlet 8, and through the spiral case structure of air inlet chamber 10, mix in the in-process of carrying, then mix through pipe passageway 9 and the hot oxygen of burning, discharge into quench section 3 through reaction section gas outlet 2b and cool off, through air inlet chamber 10 spiral case structure, effectual increase gas mixing efficiency, the improvement reaction effect.
For a specific embodiment of the present invention, one end of the toluene gun port 7 is fixedly sleeved with a widening sleeve 701, the widening sleeve 701 and the toluene gun port 7 are integrally formed, a section of the toluene gun port 7 located inside the widening sleeve 701 is provided with a widening hole 702, the cross section of the widening hole 702 is rectangular, the inner top wall and the inner bottom wall are both hinged with a baffle 703, the surface of the baffle 703 is connected with an arc rod 704 in a penetrating manner, one end of the arc rod 704 is fixedly connected with the inner wall of the widening hole 702, the surface of the arc rod is sleeved with a first spring 705, one end of the widening sleeve 701 located inside the heating section 1 is uniformly provided with a plurality of protection grooves 706, a protection device is arranged inside the protection grooves 706, and by arranging the protection device, a plunger 707 inside the protection grooves 706 is compressed, the plunger 707 compresses a buffer spring 708, the space inside the heating section 1 is increased, and high pressure gas is pressed inside the protection grooves 706, so that the inside the heating section 1 is prevented from being damaged due to instantaneous high pressure.
As a specific embodiment of the present invention, the protection device includes a plunger 707 and a buffer spring 708, the plunger 707 and the inner wall of the protection slot 706 are slidably disposed in a precisely matched manner, spring seats 709 are disposed at two ends of the buffer spring 708, an air vent 710 is disposed between one end of the protection slot 706 and the outside of the widening sleeve 701, one of the spring seats 709 is disposed at a position of the air vent 710 and is provided with a through hole, a hydraulic buffer device is disposed between the two spring seats 709, and by providing the hydraulic buffer device, the plunger 707 slowly returns to the original position under the action of the buffer spring 708, the process is to jack the sealing plug 715 inside the liquid inlet device away, so that gas and hydraulic oil slowly flow to one side of the piston 713, and the plunger 707 is prevented from rapidly returning to the original position under the action of the buffer spring 708 to generate an inertial force, so as to cause the falling damage between the buffer spring 708 and the plunger 707.
As a specific embodiment of the present invention, the hydraulic buffer device includes a hydraulic cylinder 711 and a push rod 712, one end of the push rod 712 is slidably inserted into the hydraulic cylinder 711, and is fixedly connected with a piston 713, hydraulic oil is disposed in the hydraulic cylinder 711, the volume of the hydraulic oil is smaller than half of that of the hydraulic cylinder 711, a plurality of liquid inlet devices and liquid outlet devices are disposed between two sides of the piston 713, and the number of liquid inlet devices is smaller than that of liquid outlet devices, which is beneficial to preventing the plunger 707 from rapidly recovering to generate inertial force under the action of the buffer spring 708, resulting in falling and damaging between the buffer spring 708 and the plunger 707.
As a specific embodiment of the invention, the liquid inlet device and the liquid outlet device both comprise an I-shaped channel 714, one end in the I-shaped channel 714 is provided with a sealing plug 715, the surface of the sealing plug 715 is movably connected with a T-shaped rod 716 in a penetrating way, the surface of the T-shaped rod 716 is sleeved with a second spring 717, one end of the T-shaped rod 716 is fixedly connected with a filter plate 718, the surface of the filter plate 718 is uniformly provided with holes and is fixedly connected with the inner wall of the I-shaped channel 714, the sealing plug 715 in the liquid inlet device and the liquid outlet device are oppositely arranged, and through the angle adjustable arrangement of an oxygen inlet pipe orifice, the sealing ball 401 at one end of the hot oxygen inlet pipe orifice 4 is rotated in the ball groove 402, so that one end of the T-shaped rod 406 is inserted into the corresponding slot 409, the inclination angle of the hot oxygen inlet pipe orifice 4 is changed, the combustion area is effectively changed, and the heating efficiency is increased.
The working principle of the invention is as follows:
Referring to the accompanying drawings 1-9 of the specification, preheated high-temperature hot oxygen (950 ℃) enters a heating section 1, flows forwards spirally along the inner wall of the device through a hot oxygen pipe connector, a toluene gun connector 7 is arranged at the top end of the heating section 1, the surrounding hot oxygen is further heated and warmed up uniformly by high-temperature flame (3000 ℃) of toluene combustion, the warmed up and mixed hot oxygen (1600 ℃) enters the center of the mixing section axially along the device, meanwhile, preheated titanium tetrachloride gas (450 ℃) enters a reaction section 2, enters the center of an oxidation furnace radially through a titanium tetrachloride reducing pipe channel 9 to be mixed with the hot oxygen after being uniformly distributed through a volute air chamber, reacts rapidly and rapidly, the generated base material particles continuously grow, cooling water is sleeved outside the reaction section 2 for forced circulation and heat exchange, the base material of the reaction section 2 is rapidly cooled, particle size and particle size distribution are controlled in a required range, the hot oxygen entering the heating section 1 can flow forwards spirally along the inner wall of the heating section 1, the toluene combustion flame of the central area of the heating section 1 is uniformly heated, meanwhile, the device body can be prevented from being directly corroded by the vertical direction, the service life of the device is prolonged, the volute casing 10 can be uniformly combusted, the titanium tetrachloride can be prevented from entering the oxidation furnace evenly, and the high-temperature oxidation furnace evenly, the pressure is ensured to enter the reaction chamber evenly, and the high-temperature oxidation furnace is prevented from being corroded by the uniform, and the pressure is stable, and the pressure is blown by the uniform and the pressure of the titanium tetrachloride is blown and can enter the oxidation furnace evenly and is subjected to the high-temperature and stable to the oxidation pressure and is 11;
When toluene gun interface 7 provides the toluene that burns, initial pressure is little when toluene is got into on the one hand, leads to toluene diffusion, and on the other hand stops to provide the toluene, can leave behind partial toluene in toluene gun interface 7, still can produce a section burning time, influences data error, and consequently the solution that the invention provided is: when toluene enters the widened hole 702 through the toluene gun interface 7, the toluene is briefly trapped through the baffles 703, when the toluene pressure is larger, the two baffles 703 are pushed away, so that the toluene is quickly flushed out of the toluene gun interface 7, thereby effectively preventing the toluene from diffusing, and when the toluene supply is stopped, the baffles 703 restore the closing device under the action of the first springs 705, thereby reducing the toluene quantity communicated with the inside of the heating section 1 and reducing data errors;
When gas burns in the heating section 1, the gas is easy to damage the inside of the heating section 1 due to the effect of high temperature and high pressure generated at the moment of combustion, so the solution provided by the invention is as follows: when the pressure in the heating section 1 is instantaneously increased, the plunger 707 in the protection groove 706 is compressed, the plunger 707 compresses the buffer spring 708, the space in the heating section 1 is increased, high-pressure gas is used for pressing the inside of the protection groove 706, damage caused by the instantaneous high pressure in the heating section 1 is prevented, in the compression process of the plunger 707, the spring seat 709 drives the push rod 712 to push the piston 713 to move in the hydraulic cylinder 711, gas and hydraulic oil in the hydraulic cylinder 711 are compressed, in the compression process, the sealing plug 715 in the liquid outlet device is pushed open, the gas and the hydraulic oil are extruded to the other side of the piston 713, so that the buffer effect on the plunger 707 is achieved, after combustion is completed, the plunger 707 slowly returns to the original position under the action of the buffer spring 708, the gas and the hydraulic oil slowly flow to one side of the piston 713, and the plunger 707 is prevented from rapidly returning to the original position under the action of the buffer spring 708, and the falling off between the buffer spring 708 and the plunger 707 is damaged.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a chlorination process titanium dioxide oxidation reactor, includes heating section (1), reaction section (2) and quench zone (3), its characterized in that: the whole heating section (1) is divided into a left section, a middle section and a right section, and the three sections are fixed together through a flange (5) to form a furnace body; the middle part of the left end of the heating section (1) is provided with a toluene gun interface (7), the outer diameter surface of the left end of the heating section (1) is provided with one to four hot oxygen inlet pipe orifices (4), the hot oxygen inlet pipe orifices (4) are distributed on the heating section (1) in an annular array with the center of the heating section (1) as the center, and the hot oxygen inlet pipe orifices (4) form an included angle of 60 to 85 degrees with the axial lead of the heating section (1);
The right end of the heating section (1) is communicated with the reaction section (2), the reaction section (2) is composed of an air inlet chamber (10) and feeding rings (11), the air inlet chamber (10) is of a volute type annular structure, a plurality of feeding rings (11) are fixed on the inner wall of the air inlet chamber (10), a pipe channel (9) is formed between two adjacent feeding rings (11), a high-resistant Wen Bianjing ceramic pipe is fixed on the inner wall of the pipe channel (9), and the reducing ceramic pipe is a ceramic pipe with gradually reduced outer diameter and inner diameter;
The air inlet chamber (10) is provided with a titanium tetrachloride air inlet (8), meanwhile, the air inlet chamber (10) is provided with a reaction section air inlet (2 a) and a reaction section air outlet (2 b) along the axial direction of the hot section, the reaction section air inlet (2 a) is communicated with the right end of the heating section (1), the reaction section air outlet (2 b) is communicated with the left end of the quenching section (3), the quenching section (3) is a gas-liquid heat exchanger, and the base material discharged from the reaction section (2) enters the gas-liquid heat exchanger for heat exchange and cooling;
The toluene rifle interface (7) one end can also be fixed the cover of widening (701) that has cup jointed, widening cover (701) and toluene rifle interface (7) are integrated into one piece setting, toluene rifle interface (7) are located the inside one section of widening cover (701) and have been seted up widening hole (702), widening hole (702)'s cross-sectional shape is rectangular setting, and interior roof and interior diapire all articulate baffle (703), baffle (703) surface through-connection has arc pole (704), arc pole (704) one end and widening hole (702) inner wall fixed connection, and the surface has cup jointed first spring (705), widening cover (701) one end that is located the inside of heating section (1) has evenly been seted up a plurality of shield groove (706), shield groove (706) inside is provided with protector;
The protection device comprises a plunger (707) and a buffer spring (708), wherein the plunger (707) and the inner wall of a protection groove (706) are in precise fit with each other in a sliding mode, spring seats (709) are arranged at two ends of the buffer spring (708), ventilation holes (710) are formed between one end of the protection groove (706) and the outside of a widening sleeve (701), one of the spring seats (709) is located at the position of the ventilation hole (710) and is provided with a through hole, and a hydraulic buffer device is arranged between the two spring seats (709).
2. The chloride process titanium dioxide oxidation reactor of claim 1, wherein: the number of the pipe channels (9) is four to twelve, the body of the heating section (1) is composed of a shell and a fireproof heat insulation material (6), the shell is made of nickel-based alloy, and the fireproof heat insulation material (6) is internally lined and fixed on the inner wall of the shell.
3. The chloride process titanium dioxide oxidation reactor of claim 1, wherein: the hot oxygen inlet pipe orifice (4) and the heating section (1) can be arranged in a vertical tangential mode, refractory materials are lined inside the hot oxygen inlet pipe orifice (4), a chamfer hole (401) is formed in the inner lining of the heating section (1), a hot oxygen inlet pipe orifice (4) channel is connected with the chamfer hole (401), the chamfer hole (401) and the hot oxygen inlet pipe orifice (4) channel are arranged through casting refractory materials in an integrated mode, and an axial included angle between the chamfer hole (401) and the heating section (1) is 45-75 degrees.
4. The chloride process titanium dioxide oxidation reactor of claim 1, wherein: the inner diameter of the internal cavity structure of the volute type annular structure of the air inlet chamber (10) can be reduced in a spiral mode sequentially from large to small, and the shell of the air inlet chamber (10) is made of nickel-based alloy steel plates; the feeding ring (11) in the air inlet chamber (10) is of a circular ring type solid structure, the material of the feeding ring is nickel-based alloy forging material, 8-16 pipe channels (9) are uniformly distributed around the feeding ring (11), the pipe channels (9) are gradually reduced from outside to inside, and the inside of the pipe channels (9) is tightly lined with a variable-diameter high-temperature-resistant ceramic pipe.
5. The chloride process titanium dioxide oxidation reactor according to claim 4, wherein: the hydraulic buffer device comprises a hydraulic cylinder (711) and a push rod (712), wherein one end of the push rod (712) is in sliding connection with the inside of the hydraulic cylinder (711) and is fixedly connected with a piston (713), hydraulic oil is arranged in the hydraulic cylinder (711), the volume of the hydraulic oil is smaller than half of the volume of the hydraulic cylinder (711), a plurality of liquid inlet devices and liquid outlet devices are arranged between two sides of the piston (713) in a penetrating manner, and the number of the liquid inlet devices is smaller than that of the liquid outlet devices.
6. The chloride process titanium dioxide oxidation reactor according to claim 5, wherein: the liquid inlet device and the liquid outlet device comprise an I-shaped channel (714), a sealing plug (715) is arranged at one end inside the I-shaped channel (714), a T-shaped rod (716) is movably connected to the surface of the sealing plug (715) in a penetrating mode, a second spring (717) is sleeved on the surface of the T-shaped rod (716), a filter plate (718) is fixedly connected to one end of the T-shaped rod (716), the surface of the filter plate (718) is uniformly in a hole-shaped arrangement and fixedly connected with the inner wall of the I-shaped channel (714), and the directions of the sealing plugs (715) inside the liquid inlet device and the liquid outlet device are opposite.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/086390 WO2021212405A1 (en) | 2020-04-23 | 2020-04-23 | Chlorination process-based titanium dioxide oxidation reactor |
| CNPCT/CN2020/086390 | 2020-04-23 |
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| CN113041986A CN113041986A (en) | 2021-06-29 |
| CN113041986B true CN113041986B (en) | 2024-06-04 |
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| CN202110289503.5A Active CN113041986B (en) | 2020-04-23 | 2021-03-18 | Titanium dioxide oxidation reactor by chlorination process |
| CN202120556442.XU Withdrawn - After Issue CN214765498U (en) | 2020-04-23 | 2021-03-18 | Titanium dioxide oxidation reactor by chlorination process |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120556442.XU Withdrawn - After Issue CN214765498U (en) | 2020-04-23 | 2021-03-18 | Titanium dioxide oxidation reactor by chlorination process |
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| WO (1) | WO2021212405A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021212405A1 (en) * | 2020-04-23 | 2021-10-28 | 东华工程科技股份有限公司 | Chlorination process-based titanium dioxide oxidation reactor |
| 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 |
| CN114573023A (en) * | 2022-03-31 | 2022-06-03 | 龙佰禄丰钛业有限公司 | Recycling method and system of oversize titanium dioxide base material |
| CN115634623A (en) * | 2022-10-24 | 2023-01-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and method for adding potassium chloride in titanium white production by chlorination process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735000A (en) * | 1969-07-31 | 1973-05-22 | Sir Soc Italiana Resine Spa | Process for preparing titanium dioxide |
| CN1277941A (en) * | 2000-06-13 | 2000-12-27 | 华东理工大学 | Titanium white chloride oxidation reactor |
| CN1743271A (en) * | 2005-07-21 | 2006-03-08 | 华东理工大学 | Diffusion combustion reactor for preparing nano titanium dioxide and its use |
| CN101547865A (en) * | 2006-12-20 | 2009-09-30 | 克罗内斯国际公司 | Method for the production of titanium dioxide by oxygenating titanium tetrachloride |
| CN105271387A (en) * | 2015-08-07 | 2016-01-27 | 仙桃市中星电子材料有限公司 | Continuous production oxidation furnace and production method of highly pure titanium dioxide |
| CN214765498U (en) * | 2020-04-23 | 2021-11-19 | 东华工程科技股份有限公司 | Titanium dioxide oxidation reactor by chlorination process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE755089A (en) * | 1969-08-20 | 1971-02-22 | Montedison Spa | REACTOR AND PROCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE OF PIGMENTAL QUALITY |
| US20080274040A1 (en) * | 2007-05-03 | 2008-11-06 | Tronox Llc | Injector assembly, chemical reactor and chemical process |
| CN201264909Y (en) * | 2008-05-28 | 2009-07-01 | 攀枝花钢铁(集团)公司 | Titanic chloride oxidation reactor |
-
2020
- 2020-04-23 WO PCT/CN2020/086390 patent/WO2021212405A1/en active Application Filing
-
2021
- 2021-03-18 CN CN202110289503.5A patent/CN113041986B/en active Active
- 2021-03-18 CN CN202120556442.XU patent/CN214765498U/en not_active Withdrawn - After Issue
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735000A (en) * | 1969-07-31 | 1973-05-22 | Sir Soc Italiana Resine Spa | Process for preparing titanium dioxide |
| CN1277941A (en) * | 2000-06-13 | 2000-12-27 | 华东理工大学 | Titanium white chloride oxidation reactor |
| CN1743271A (en) * | 2005-07-21 | 2006-03-08 | 华东理工大学 | Diffusion combustion reactor for preparing nano titanium dioxide and its use |
| CN101547865A (en) * | 2006-12-20 | 2009-09-30 | 克罗内斯国际公司 | Method for the production of titanium dioxide by oxygenating titanium tetrachloride |
| CN105271387A (en) * | 2015-08-07 | 2016-01-27 | 仙桃市中星电子材料有限公司 | Continuous production oxidation furnace and production method of highly pure titanium dioxide |
| CN214765498U (en) * | 2020-04-23 | 2021-11-19 | 东华工程科技股份有限公司 | Titanium dioxide oxidation reactor by chlorination process |
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|---|---|
| CN214765498U (en) | 2021-11-19 |
| CN113041986A (en) | 2021-06-29 |
| WO2021212405A1 (en) | 2021-10-28 |
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