CN103112886A - Fluidizing chlorination furnace and fluidizing chlorination device - Google Patents
Fluidizing chlorination furnace and fluidizing chlorination device Download PDFInfo
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- CN103112886A CN103112886A CN2011103653006A CN201110365300A CN103112886A CN 103112886 A CN103112886 A CN 103112886A CN 2011103653006 A CN2011103653006 A CN 2011103653006A CN 201110365300 A CN201110365300 A CN 201110365300A CN 103112886 A CN103112886 A CN 103112886A
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Abstract
The invention discloses a fluidizing chlorination furnace and a fluidizing chlorination device. The fluidizing chlorination furnace comprises a reaction section, a settling section and a transition section, wherein the transition section is used for connecting the reaction section with the settling section, an air outlet is formed in the settling section, a solid raw material inlet is formed in the transition section and/or the settling section, and an air inlet and a slag notch are formed in the reaction segment. The fluidizing chlorination furnace is characterized in that a diameter ratio of the settling section to the reaction section is more than or equal to 2.5, the peripheral surface of the transition section is a cone table surface, and a taper angle of the cone table surface is less than or equal to 80 degrees. When the fluidizing chlorination furnace discloses by the invention is utilized to produce titanium tetrachloride, the fluidizing chlorination furnace is suitable for titanium slag with conventional diameter sizes (the diameter is generally 0.08-0.25 mm (180-60 meshes)) and is specifically suitable for titanium-containing raw materials with smaller particle diameters, so that the use ratio of the titanium-containing raw materials can be greatly improved, thereby improving the yield of the titanium tetrachloride.
Description
Technical field
The present invention relates to a kind of boiling chloridizing furnace and the fluidizing chlorination device that comprises this boiling chloridizing furnace.
Background technology
It is one of important procedure of chloride process titanium dioxide and titanium sponge production that fluidizing chlorination is produced titanium tetrachloride, and this technique is generally used titaniferous materials and chlorine to carry out chlorination reaction in boiling chloridizing furnace, obtains the important intermediates titanium tetrachloride of titanium industry.At present, in the industrial production in this field, because the fluidizing chlorination technology is all generally from external introduction, and the titanium slag diameter that the titanium material supplier of main flow produces at present is generally 0.08mm-0.25mm (180 orders-60 order), the boiling chloridizing furnace adopted in existing industrial production also designs according to this raw material granularity standard, but, adopt the boiling chloridizing furnace of prior art, when the titaniferous materials that the employing particle diameter is less is produced titanium tetrachloride, the utilization ratio of titaniferous materials is not high, causes the productive rate of titanium tetrachloride not high yet.
Summary of the invention
The object of the invention is to solve the boiling chloridizing furnace that adopts prior art, when the titaniferous materials that the employing particle diameter is less is produced titanium tetrachloride, the utilization ratio of titaniferous materials is not high, the productive rate that causes titanium tetrachloride is not high problem also, a kind of utilization ratio that can improve titaniferous materials is provided, thereby improves the boiling chloridizing furnace of titanium tetrachloride productive rate and the fluidizing chlorination device that comprises this boiling chloridizing furnace.
The present inventor finds, in the traditional boiling chloridizing furnace of employing carries out the chlorination reaction of titaniferous materials, material at conversion zone after boiling state, (be generally 0.2-0.25 with the aspect ratio of conversion zone: 1) because transition section is very short, small particles material (for example, particle diameter is the titaniferous materials that 0.075mm is even less) be blown very soon conversion zone and enter settling section, at settling section, because the diameter ratio of settling section and conversion zone does not have (to be generally 1.5-2: 1) enough greatly, and gas velocity does not fully descend, cause finely ground particle substance can't be deposited to conversion zone, just directly by air-flow, taken out of boiling chloridizing furnace, therefore, in selecting the titanium process, short grained raw material, for example for the even less titaniferous materials of 0.075mm, often can not be utilized effectively, even while selecting the less titaniferous materials of particle diameter to produce titanium tetrachloride, the utilization ratio of titaniferous materials is not high, cause the productive rate of titanium tetrachloride also not high.
The present inventor also finds, if the settling section of increase boiling chloridizing furnace and the diameter ratio of conversion zone, the diameter of sedimentation relatively increases diminishes the interior small particles material flow line speed of stove, can make the easier sedimentation of material.In addition, make the cone angle of the periphery frustum face of described transition section≤80 °, just can be under the condition of the certain diameter ratio that guarantees settling section and conversion zone, can guarantee that transition section has certain-length, make small particles material be difficult for directly being blown to settling section, small particles material still can just can increase the touch opportunity of material and chlorine in boiling state at transition section, is conducive to the chlorination reaction of material.More preferably, in situation, increase the height of settling section, can reduce the gas velocity of gas outlet, contribute to further to be conducive to the sedimentation of finely ground particle substance, can also prevent that finely ground particle substance from directly being blown out boiling chloridizing furnace.Further under preferable case, fluidizing chlorination device provided by the invention can send back in boiling chloridizing furnace by the finely ground particle substance in the tail gas of collecting again, unreacted raw material is reacted fully, therefore, fine fraction titaniferous materials (0.075mm) can be carried out to recycle, thereby can further improve the utilization ratio of titaniferous materials, to improve the productive rate of titanium tetrachloride.
In order to address the above problem, the invention provides a kind of boiling chloridizing furnace, this boiling chloridizing furnace comprises conversion zone, settling section and the transition section that connects this conversion zone and settling section, be provided with pneumatic outlet on described settling section, be provided with solid feed inlet on described transition section and/or settling section, be provided with gas inlet and slag notch on described conversion zone, wherein, described settling section is more than or equal to 2.5 with the diameter ratio of conversion zone, the periphery of described transition section is the frustum face, the cone angle of this frustum face≤80 °.
The present invention also provides a kind of fluidizing chlorination device, this fluidizing chlorination device comprises: boiling chloridizing furnace and the solid material storehouse be communicated with this boiling chloridizing furnace respectively, dust collecting system and Chlorine Buffer Vessel, it is characterized in that, described boiling chloridizing furnace is boiling chloridizing furnace of the present invention, described solid material storehouse comprises feed(raw material)inlet and material outlet, the material outlet in described solid material storehouse is connected with the solid feed inlet of described boiling chloridizing furnace, described dust collecting system comprises gather dust unit and the tank that gathers dust, the described unit that gathers dust comprises the mouth that gathers dust, dust-exhausting port and venting port, the mouth that gathers dust of the described unit that gathers dust is connected with the pneumatic outlet of described boiling chloridizing furnace, the dust-exhausting port of the described unit that gathers dust is connected with the described tank that gathers dust, described Chlorine Buffer Vessel is connected with the gas inlet of described boiling chloridizing furnace.
Employing is carried out titanium tetrachloride production according to boiling chloridizing furnace provided by the invention, described boiling chloridizing furnace not only is applicable to the titanium slag (being generally 0.08mm-0.25mm (180 orders-60 order)) of existing diameter, also be specially adapted to the titaniferous materials that adopts particle diameter less, the utilization ratio that can greatly improve titaniferous materials is not high, thereby improves the productive rate of titanium tetrachloride.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
The accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms the part of specification sheets, is used from explanation the present invention with the specific embodiment of the present invention one, but is not construed as limiting the invention.
The schematic diagram of the boiling chloridizing furnace that Fig. 1 is a preferred embodiment of the invention;
Fig. 2 is the schematic diagram according to fluidizing chlorination device of the present invention;
Fig. 3 is the schematic diagram according to the fluidizing chlorination device of a preferred implementation of the present invention.
Description of reference numerals
1: boiling chloridizing furnace 2: the titanium material feed bin
3: refinery coke feed bin 4: the solid material storehouse
5: one-level cyclone 6: the secondary cyclone
7: three grades of cyclones 8: tank gathers dust
9: Chlorine Buffer Vessel 10: gas inlet
11: solid feed inlet 12: feedback outlet
13: pneumatic outlet 14: slag notch
15: mouth 16 gathers dust: venting port
17: dust-exhausting port 18: the solid material outlet
19: unit gathers dust
A: conversion zone B: settling section
C: transition section.
Embodiment
According to boiling chloridizing furnace provided by the invention, this boiling chloridizing furnace comprises conversion zone, settling section and the transition section that connects this conversion zone and settling section, be provided with pneumatic outlet on described settling section, be provided with solid feed inlet on described transition section and/or settling section, be provided with gas inlet and slag notch on described conversion zone, wherein, described settling section is more than or equal to 2.5 with the diameter ratio of conversion zone, the periphery of described transition section is the frustum face, the cone angle of this frustum face≤80 °.
According to the present invention, preferably, described settling section is 2.5-3.5 with the diameter ratio of conversion zone, and the cone angle of described frustum face is 30-80 °.As shown in Figure 1, the cone angle finger-type of described frustum face becomes the extended line of two side bus of the frustum face of conversion zone to intersect formed angle, is expressed as α in Fig. 1.According to the present invention, preferably, the height of described conversion zone is more than or equal to 1.5 with the diameter ratio, and the height of described settling section is more than or equal to 0.6 with the diameter ratio; More preferably, the height of described conversion zone is with diameter than being 1.5-3, and the height of described settling section is 0.6-1 with the diameter ratio.
According to the present invention, described solid feed inlet is for sending into the solid material of question response in described boiling chloridizing furnace, the position of described solid feed inlet has no particular limits, as long as be positioned on described transition section and/or linkage section, under preferable case, described solid feed inlet is positioned at described conversion zone; In order to make solid material longer with the catalytic time of chlorine in stove, so that raw material fully reacts, more preferably, in situation, described solid feed inlet is positioned at the junction of conversion zone and transition section.
According to the present invention, described pneumatic outlet is discharged outside described boiling chloridizing furnace for the tail gas by producing after reaction, wherein comprise the carbonic acid gas and a small amount of carbon monoxide that produce in solid material, unreacted chlorine and the chlorination reaction process that chlorination reaction product titanium tetrachloride, unreacted part are thinner, for the position of described pneumatic outlet, there is no particular limitation, but for fear of the too many unreacted solid material of inspiration, preferably, described pneumatic outlet is formed on the top of described settling section; More preferably, described pneumatic outlet is formed on the top of settling section.
According to the present invention, can also be provided with feedback outlet on described transition section and/or settling section, the part unreacted solid material of the tail gas that described feedback outlet is collected for the unit that will gather dust is sent described boiling chloridizing furnace back to, for the position of described feedback outlet, there is no particular limitation, as long as the part unreacted solid material of described collection can be sent back in described boiling chloridizing furnace and is made it to contact and react with chlorine, under preferable case, described feedback outlet is positioned at described conversion zone and/or settling section; Can do not blown out conversion zone by air-flow afterwards for the thinner solid material that makes to collect enters body of heater, and keep stable fluidized state, more preferably, in situation, described feedback outlet is positioned at the below of described settling section at once.
According to the present invention, the bottom shape of described conversion zone is not particularly limited, and for example, can be that inverted dome shape can be also inverted coniform, and for the material that makes reaction is easier to collect, preferably, the bottom of described conversion zone forms inverted coniform.
According to the present invention, described slag notch is discharged for the solid residue that will react, and for described slag notch position, has no particular limits, as long as be positioned at the below of conversion zone, be easy to that the solid residue reacted is discharged to described boiling chloridizing furnace and get final product, be preferably placed at the bottom of described conversion zone.
According to the present invention, the mixture that described solid material is titaniferous materials and refinery coke, the titaniferous materials used for boiling chloridizing furnace of the present invention has no particular limits, preferably, it is less that boiling chloridizing furnace of the present invention is more suitable for median size, for example is less than the fluidizing chlorination production of the titaniferous materials of 0.08mm; More preferably, be more suitable for the fluidizing chlorination production that median size is less than the titaniferous materials of 0.075mm.Generally, TiO in described titaniferous materials
2content be the 45-99 % by weight; More preferably, TiO in described titaniferous materials
2content be the 90-96 % by weight artificial rutile carries out fluidizing chlorination production.For the refinery coke used in the present invention, there is no particular limitation, can be the normally used refinery coke in this area, and the ratio of mixture of described titaniferous materials and described refinery coke is preferably 100: (30-40).
According to fluidizing chlorination device provided by the invention, this fluidizing chlorination device comprises: boiling chloridizing furnace and the solid material storehouse be communicated with this boiling chloridizing furnace respectively, dust collecting system and Chlorine Buffer Vessel, it is characterized in that, described boiling chloridizing furnace is boiling chloridizing furnace of the present invention, described solid material storehouse comprises feed(raw material)inlet and material outlet, the material outlet in described solid material storehouse is connected with the solid feed inlet of described boiling chloridizing furnace, described dust collecting system comprises gather dust unit and the tank that gathers dust, the described unit that gathers dust comprises the mouth that gathers dust, dust-exhausting port and venting port, the mouth that gathers dust of the described unit that gathers dust is connected with the pneumatic outlet of described boiling chloridizing furnace, the dust-exhausting port of the described unit that gathers dust is connected with the described tank that gathers dust, described Chlorine Buffer Vessel is connected with the gas inlet of described boiling chloridizing furnace.
According to the present invention, described dust collecting system is for gathering dust, and the dust in gathering dust is separated with tail gas, composition and position for described dust collecting system have no particular limits, as long as can play the effect of gathering dust and separating dust and tail gas, for example, described dust collecting system can comprise the tank that gathers dust that gathers dust unit and be connected with the unit that gathers dust, the described unit that gathers dust is for gathering dust, and by described dust with discharge respectively after tail gas separates, the described tank that gathers dust is for holding the dust of the unit discharge of gathering dust, the dust-precipitator that the described unit that gathers dust can comprise that one or more is identical or different.Under preferable case, the described unit that gathers dust comprises one-level dust-precipitator, secondary dust collecting and the three grades of dust-precipitators that are connected in series, under preferable case, the dust-exhausting port of described one-level dust-precipitator, secondary dust collecting all is connected with the feedback outlet of described boiling chloridizing furnace, the dust-exhausting port of described three grades of dust-precipitators is connected with the tank that gathers dust, and the venting port of the described unit that gathers dust is arranged on described three grades of dust-precipitators.Gather dust unit while adopting above-mentioned tertiary structure, the dust (comprising the unreacted titaniferous materials of part) of the larger particles that one-level dust-precipitator and secondary dust collecting are collected can return in boiling chloridizing furnace, can improve raw material availability, described dust-precipitator can be the various dust-precipitators that can play the effect of gathering dust known in those skilled in the art, for example cyclone.
According to the present invention, described solid material storehouse is for placing the material of question response, and the titanium material that the chlorination reaction of described titaniferous materials is used and refinery coke material can first carry out directly joining in described solid material storehouse after batch mixing.Under preferable case, for the continuity operated, and more even for raw material is mixed, described fluidizing chlorination device also comprises titanium material storehouse and refinery coke feed bin, the material outlet of described titanium material storehouse and refinery coke feed bin all is connected with the feed(raw material)inlet in described solid material storehouse, and the material outlet in described solid material storehouse is connected with the solid feed inlet of described boiling chloridizing furnace, now, after titanium material and refinery coke material are joined respectively to described titanium material storehouse and refinery coke feed bin, material enters into described solid material storehouse again to be mixed, afterwards mixture is joined in described boiling chloridizing furnace by solid feed inlet.
According to the present invention, described Chlorine Buffer Vessel, for chlorine is provided, has no particular limits for described Chlorine Buffer Vessel, can be the normally used various Chlorine Buffer Vessel in this area.
One preferred implementation according to the present invention, as shown in Figure 1, boiling chloridizing furnace of the present invention comprises conversion zone A, settling section B and connect this conversion zone A and the transition section C of settling section B, the top of described settling section B is provided with pneumatic outlet 13, junction at described conversion zone A and transition section C is provided with solid feed inlet 11, be provided with feedback outlet 12 below described settling section B, the bottom of described conversion zone A forms inverted coniform, be provided with slag notch 14 in the bottom of described conversion zone A, wherein, described settling section B is greater than 2.5 with the diameter ratio of conversion zone A, the periphery of described transition section C is the frustum face, the cone angle of this frustum face≤80 °.
As shown in Figure 1, can be by solid feed inlet 11 to conveying solid substance raw material in body of heater, carry chlorine by gas inlet 10 in body of heater, solid material is boiling state due to the air-flow of chlorine at conversion zone A, small particles material is blown conversion zone A, at transition section C because gas speed descends gradually, raw meal particle size distributes and also is tapered along the height of bed, therefore can not fall back to conversion zone A at once, material also can keep good boiling state to be conducive to chlorination reaction in this section, by air-flow, be blown in the material of settling section, partial material falls back to conversion zone because gas speed descends and continues the boiling fluidisation, the titanium tetrachloride that reaction produces, tail gas and part fine etc. are by pneumatic outlet 13 discharges at settling section B top, reacted slag charge is discharged by the slag notch 14 of conversion zone A bottom, in addition, under preferable case, the fine of being collected by dust collecting system is transported in body of heater again by the feedback outlet 12 of settling section C below.
One preferred implementation according to the present invention, as shown in Figure 2, fluidizing chlorination device of the present invention comprises: boiling chloridizing furnace 1 of the present invention and the solid material storehouse 4 be communicated with this boiling chloridizing furnace 1 respectively, dust collecting system and Chlorine Buffer Vessel 9, described solid material storehouse 4 comprises feed(raw material)inlet (not diagram) and solid material outlet 18, described solid material outlet 18 is connected with the solid feed inlet 11 of described boiling chloridizing furnace 1, described dust collecting system comprises gather dust unit 19 and the tank 8 that gathers dust, the described unit 19 that gathers dust comprises the mouth 15 that gathers dust, venting port 16 and dust-exhausting port 17, the described mouth 15 that gathers dust is connected with the pneumatic outlet 13 of described boiling chloridizing furnace 1, described dust-exhausting port 17 is connected with the described tank 8 that gathers dust, described Chlorine Buffer Vessel 9 is connected with the gas inlet 10 of described boiling chloridizing furnace 1.
As shown in Figure 3, another preferred implementation according to the present invention, the unit 19 that gathers dust of fluidizing chlorination device comprises one-level dust-precipitator 5, secondary dust collecting 6 and the three grades of dust-precipitators 7 that are connected in series, the dust-exhausting port 17 of described one-level dust-precipitator 5 ', the dust-exhausting port 17 of secondary dust collecting 6 " all with the feedback outlet 12 of described boiling chloridizing furnace 1, be connected; The dust-exhausting port 17 of described three grades of dust-precipitators 7 is connected with the tank 8 that gathers dust, and the venting port 16 of the described unit 19 that gathers dust is arranged on described three grades of dust-precipitators 7.
As shown in Figure 3, under preferable case, described fluidizing chlorination device also comprises titanium material storehouse 2, refinery coke feed bin 3, the material outlet 2 in described titanium material storehouse 2 " and refinery coke feed bin 3 material outlet 3 " all with the feed(raw material)inlet 2 in described solid material storehouse ', feed(raw material)inlet 3 ' be connected, and the solid material in described solid material storehouse 4 exports 18 and is connected with the solid feed inlet 11 of described boiling chloridizing furnace 1.
Below, the operational process that describes fluidizing chlorination device of the present invention in conjunction with Fig. 3 in detail is as follows: titaniferous materials and refinery coke material join respectively in titanium material storehouse 2 and refinery coke feed bin 3, titaniferous materials and refinery coke material are respectively by the material outlet 2 " and material outlet 3 of refinery coke feed bin 3 " in titanium material storehouse 2, and solid material storehouse 4, the feed(raw material)inlet 2 by described solid material storehouse 4 ' and feed(raw material)inlet 3 ' enter into respectively, and mixed in described solid material storehouse 4, by solid material storehouse 4, the solid feed inlet 11 through conversion zone A and transition section C junction joins in boiling chloridizing furnace 1 mixed solid material, by Chlorine Buffer Vessel 9, the gas inlet 10 through conversion zone A below is passed in boiling chloridizing furnace 1 chlorine, described mixing raw material and chlorine are in the fluidizing chlorination reaction in furnace, the titanium tetrachloride that reaction produces, tail gas, the pneumatic outlets 13 through settling section B top such as the unreacted fine of part are discharged into dust collecting system, titanium tetrachloride and the tail gas venting port on three grades of dust-precipitators is discharged in condenser system (not diagram), in condenser system, titanium tetrachloride liquefies and is separated with tail gas, the structure of condenser system and principle of work are identical with prior art, therefore repeat no more, the larger fine particle of particle diameter of collecting through one-level dust-precipitator 5 and the secondary dust collecting 6 of the described unit 19 that gathers dust is returned in chlorination furnace and is proceeded the chlorination that circulates by the feedback outlet 12 below settling section B, and the less fine particle of particle of three grades of dust-precipitator 7 collections enters the tank 8 that gathers dust, and the slag charge that reaction produces is discharged by the slag notch 14 of conversion zone A bottom.
Reach by the following examples Comparative Examples and illustrate that boiling chloridizing furnace of the present invention and fluidizing chlorination device are used the fine fraction titanium material to carry out the effect of fluidizing chlorination.
The present embodiment adopts the fluidizing chlorination device shown in Fig. 3 to produce titanium tetrachloride for illustrating.
Carry out the production of titanium tetrachloride according to the fluidizing chlorination device shown in Fig. 3, wherein, the boiling chloridizing furnace in described fluidizing chlorination device adopts following parameters:
A. the diameter of boiling chloridizing furnace conversion zone A is 1m, is highly 3m;
B. the diameter of boiling chloridizing furnace settling section B is 3m, is highly 1.8m;
C. the height of the transition section C between boiling chloridizing furnace conversion zone A and settling section B is 1.19m, and the cone angle of transition section C frustum face is 80 °.
As shown in Figure 3, respectively the mean diameter of 4800kg is less than to the fine fraction artificial rutile (TiO of 0.075mm
2content 93%) and the 1600kg mean diameter refinery coke raw material that is less than 0.18mm be placed in titanium material storehouse 2 and refinery coke feed bin 3, and send in solid material storehouse 4 and mixed by the weight ratio of 3: 1, by solid material storehouse 4, from solid feed inlet 11, the speed with 600kg/h adds solid material to boiling chloridizing furnace 1, chlorine is fed in boiling chloridizing furnaces through gas inlet 10 by Chlorine Buffer Vessel 9, flow is 1100kg/h, temperature in boiling chloridizing furnace is 850 ℃, reaction times is 8 hours, the titanium tetrachloride that reaction generates, tail gas and fine etc. are collected by dust collecting system, dust collecting system comprises gather dust unit 19 and the tank 8 that gathers dust, wherein, the unit 19 that gathers dust comprises the one-level cyclone 5 of series connection, secondary cyclone 6 and three grades of cyclones 7, and the tank 8 that gathers dust be connected with three grades of cyclones 7, through one-level cyclone 5, the fine that secondary cyclone 6 is collected does not enter the tank 8 that gathers dust, but return to chlorination furnace 1 chlorination that circulated by feedback outlet 12, the relatively fine particle of being collected by three grades of cyclones 7 enters the tank 8 that gathers dust, the gas-liquid separation after condenser system of titanium tetrachloride and tail gas, finally obtain the titanium tetrachloride of about 8800kg, gather dust in tank and collect the solid material (wherein content of titanium dioxide is 28% % by weight) of 1328kg, the results are shown in Table 1.
The present embodiment adopts the fluidizing chlorination device shown in Fig. 3 to produce titanium tetrachloride for illustrating.
Carry out fluidizing chlorination according to the described method of embodiment 1, different, boiling chloridizing furnace adopts following parameters:
A. the diameter of boiling chloridizing furnace conversion zone A is 1500mm, is highly 2300mm;
B. the diameter of boiling chloridizing furnace settling section B is 3800mm, is highly 3040mm;
C. boiling chloridizing furnace conversion zone A and settling section B linkage section height are 1990mm, and the cone angle of transition section frustum face is 60 °.Finally obtain the titanium tetrachloride of about 9188kg, collect the solid material (wherein content of titanium dioxide is 26% % by weight) of 1073kg in the tank that gathers dust, the results are shown in Table 1.
The present embodiment adopts the fluidizing chlorination device shown in Fig. 3 to produce titanium tetrachloride for illustrating.
Carry out fluidizing chlorination according to the described method of embodiment 1, different, boiling chloridizing furnace adopts following parameters:
A. the diameter of boiling chloridizing furnace conversion zone A is 1000mm, is highly 2200mm;
B. the diameter of boiling chloridizing furnace settling section B is 3500mm, is highly 3500mm;
C. boiling chloridizing furnace conversion zone A and settling section B linkage section height are 2166mm, and the cone angle of transition section frustum face is 30 °.Finally obtain the titanium tetrachloride of about 9775kg, collect the solid material (wherein content of titanium dioxide is 23% % by weight) of 809kg in the tank that gathers dust, the results are shown in Table 1.
The present embodiment adopts the fluidizing chlorination device shown in Fig. 3 to produce titanium tetrachloride for illustrating.
Carry out fluidizing chlorination according to the described method of embodiment 1, different, boiling chloridizing furnace adopts following parameters:
A. the diameter of boiling chloridizing furnace conversion zone A is 700mm, is highly 2800mm;
B. the diameter of boiling chloridizing furnace settling section B is 2800mm, is highly 3360mm;
C. boiling chloridizing furnace conversion zone A and settling section B linkage section height are 2884mm, and the cone angle of transition section frustum face is 20 °.Finally obtain the titanium tetrachloride of about 8420kg, collect the solid material (wherein content of titanium dioxide is 30% % by weight) of 1550kg in the tank that gathers dust, the results are shown in Table 1.
The present embodiment adopts the fluidizing chlorination device shown in Fig. 2 to produce titanium tetrachloride for illustrating.
Carry out fluidizing chlorination according to the described method of embodiment 1, different, carry out the production of titanium tetrachloride according to the fluidizing chlorination device shown in Fig. 2, and boiling chloridizing furnace adopts following parameters:
A. the diameter of boiling chloridizing furnace conversion zone A is 1000mm, is highly 3000mm;
B. the diameter of boiling chloridizing furnace settling section B is 3000mm, is highly 1800mm;
C. boiling chloridizing furnace conversion zone A and settling section B linkage section height are 1190mm, and the cone angle of transition section frustum face is 80 °.
In addition, originally be in embodiment, fine fraction artificial rutile and refinery coke raw material directly join the solid material storehouse to be mixed and is sent into boiling chloridizing furnace 1, the fine particle that unit 19 collects that gathers dust directly enters the tank 8 that gathers dust, finally obtain the titanium tetrachloride of about 8050kg, gather dust in tank and collect the solid material (wherein content of titanium dioxide is 27% % by weight) of 2066kg, the results are shown in Table 1.
Comparative Examples 1
Effect when this Comparative Examples is produced titanium tetrachloride for the fluidizing chlorination device that the use prior art is described.
Carry out fluidizing chlorination according to the described method of embodiment 5, different, the boiling chloridizing furnace used adopts following parameters:
A. the diameter of boiling chloridizing furnace conversion zone A is 1000mm, is highly 2000mm;
B. the diameter of boiling chloridizing furnace settling section B is 2000mm, is highly 800mm;
C. boiling chloridizing furnace conversion zone A and settling section B linkage section height are 500mm, and the cone angle of transition section frustum face is 90 °.Finally obtain the titanium tetrachloride of about 6809kg, collect the solid material (wherein content of titanium dioxide is 32% % by weight) of 2905kg in the tank that gathers dust, the results are shown in Table 1.
Each parameter in table 1 is calculated by following formula respectively:
The titanium tetrachloride weight (kg) that the chlorination rate of titanium material (% by weight)=reaction obtains/titanium tetrachloride theoretical yield (kg) * 100%
Content of titanium dioxide (kg) * 100% in the solid material of the content of titanium dioxide (kg) during the utilization ratio of titanium material (% by weight)=100%-gathers dust/input
Table 1
As can be seen from Table 1, improved fluidizing chlorination device of the present invention (embodiment 1-5) is compared with the boiling chloridizing furnace (Comparative Examples 1) of prior art, boiling chloridizing furnace of the present invention is specially adapted to the titaniferous materials (diameter 0.075mm is following) that adopts particle diameter less, can greatly improve the utilization ratio of titaniferous materials, thereby improve the productive rate of titanium tetrachloride; And the fluidizing chlorination device that feedback outlet is arranged (embodiment 1-4) of the band of the present invention shown in use accompanying drawing 3 is with the boiling afforestation equipment (embodiment 5) that there is no feedback outlet of the present invention shown in use accompanying drawing 2 while comparing, and the chlorination rate of titanium material and the utilization ratio of titaniferous materials are all higher than the latter.
Industrial utilization
Boiling chloridizing furnace of the present invention and fluidizing chlorination device have been realized the fluidizing chlorination production of fine fraction titanium material, have effectively improved the utilization ratio of titaniferous materials, thereby improve the titanium tetrachloride productive rate.
It should be noted that each the concrete technical characterictic described in above-mentioned embodiment can carry out arbitrary combination by any suitable mode, within it falls into scope disclosed in this invention equally.In addition, between various embodiment of the present invention, also can carry out arbitrary combination, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Claims (12)
1. a boiling chloridizing furnace, this boiling chloridizing furnace comprises conversion zone, settling section and the transition section that connects this conversion zone and settling section, be provided with pneumatic outlet on described settling section, be provided with solid feed inlet on described transition section and/or settling section, be provided with gas inlet and slag notch on described conversion zone, it is characterized in that, described settling section is more than or equal to 2.5 with the diameter ratio of conversion zone, the periphery of described transition section is the frustum face, the cone angle of this frustum face≤80 °.
2. boiling chloridizing furnace according to claim 1, wherein, the diameter of described settling section and conversion zone is than being 2.5-3.5, the cone angle of described frustum face is 30-80 °.
3. boiling chloridizing furnace according to claim 1 and 2, wherein, the height of described conversion zone is more than or equal to 1.5 with the diameter ratio, and the height of described settling section is more than or equal to 0.6 with the diameter ratio.
4. boiling chloridizing furnace according to claim 3, wherein, the height of described conversion zone with diameter than being 1.5-3, the height of described settling section with diameter than being 0.6-1.
5. boiling chloridizing furnace according to claim 1, wherein, described solid feed inlet is positioned at the junction of conversion zone and transition section.
6. boiling chloridizing furnace according to claim 1, wherein, described pneumatic outlet is positioned at the top of settling section.
7. boiling chloridizing furnace according to claim 1, wherein, also be provided with feedback outlet on described transition section and/or settling section.
8. boiling chloridizing furnace according to claim 7, wherein, described feedback outlet is positioned at the below of described settling section.
9. a fluidizing chlorination device, this fluidizing chlorination device comprises: boiling chloridizing furnace and the solid material storehouse be communicated with this boiling chloridizing furnace respectively, dust collecting system and Chlorine Buffer Vessel, it is characterized in that, described boiling chloridizing furnace is the described boiling chloridizing furnace of any one in claim 1-8, described solid material storehouse comprises feed(raw material)inlet and material outlet, the material outlet in described solid material storehouse is connected with the solid feed inlet of described boiling chloridizing furnace, described dust collecting system comprises gather dust unit and the tank that gathers dust, the described unit that gathers dust comprises the mouth that gathers dust, dust-exhausting port and venting port, the mouth that gathers dust of the described unit that gathers dust is connected with the pneumatic outlet of described boiling chloridizing furnace, the dust-exhausting port of the described unit that gathers dust is connected with the described tank that gathers dust, described Chlorine Buffer Vessel is connected with the gas inlet of described boiling chloridizing furnace.
10. fluidizing chlorination device according to claim 9, wherein, the described unit that gathers dust comprises one-level dust-precipitator, secondary dust collecting and the three grades of dust-precipitators that are connected in series, and the dust-exhausting port of described one-level dust-precipitator, secondary dust collecting all is connected with the feedback outlet of described boiling chloridizing furnace.
11. fluidizing chlorination device according to claim 10, wherein, the dust-exhausting port of described three grades of dust-precipitators is connected with the tank that gathers dust, and the venting port of the described unit that gathers dust is arranged on described three grades of dust-precipitators.
12. fluidizing chlorination device according to claim 9, wherein, described fluidizing chlorination device also comprises titanium material storehouse and refinery coke feed bin, and the material outlet of described titanium material storehouse and refinery coke feed bin all is connected with the feed(raw material)inlet in described solid material storehouse.
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