CN202030523U - Hydrogen fluoride gas desiliconization device for producing aluminum fluoride by using dry method - Google Patents
Hydrogen fluoride gas desiliconization device for producing aluminum fluoride by using dry method Download PDFInfo
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- CN202030523U CN202030523U CN2011200799675U CN201120079967U CN202030523U CN 202030523 U CN202030523 U CN 202030523U CN 2011200799675 U CN2011200799675 U CN 2011200799675U CN 201120079967 U CN201120079967 U CN 201120079967U CN 202030523 U CN202030523 U CN 202030523U
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- desiliconization
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- hydrogen fluoride
- aluminum fluoride
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Abstract
The utility model discloses a hydrogen fluoride gas desiliconization device for producing aluminum fluoride by using a dry method. The device comprises an upper cooling desiliconization container which is cooled by using the outer wall of the desiliconization container, and is characterized in that: the desiliconization container is provided with a gas inlet pipeline and a gas exhaust pipeline; and a collection container for collecting mixed acid liquid of fluosilicic acid and hydrofluoric acid is arranged below the desiliconization container. Through the desiliconization device, most of silicon tetrafluoride, vapor and acid mist in the hydrogen fluoride gas can be removed to enter a fluidized bed for producing the aluminum fluoride by the dry method to react with aluminum hydroxide so as to obtain qualified aluminum fluoride; and the device has great significance for qualification of silicon dioxide index of an aluminum fluoride product produced by the dry method.
Description
Technical field
The utility model belongs to the aluminum fluoride by dry process technical field, more specifically relates to a kind of hydrogen fluoride gas desiliconization device of dry production aluminum fluoride.
Background technology
Aluminium fluoride product is mainly used in electrolysis aluminium metallurgy industry, as the flux in the Aluminum Electrolysis Production, is used to reduce electrolytical fusing point, improves electrolytical electric conductivity.Aluminum fluoride by dry process technology is a kind of under suspension or fluidized state, generates the technology of aluminum fluoride with gaseous hydrogen fluoride and solid-state aluminium hydroxide direct reaction.The product water-content of dry production is low, unit weight is high, can avoid " hydrolysis " reaction and minimizing to fly upward loss during use, reduces hydrofluoric discharging, reduces the loss of aluminum fluoride simultaneously.
But introduce after reactant gases (without the being condensed into AHF) direct purification of hydrogen fluoride rotary kiln at present fluidized-bed dry production aluminum fluoride technology require very highly for raw material acid level fluorite powder, generally all need SiO
2In≤1.5%, just can produce the SiO that meets GB
2≤ 0.3% aluminum fluoride by dry process qualified product, in high quality acid level fluorite powder today more and more in short supply, can utilize the acid level fluorite powder of high silicon just more and more important for the meaning of the qualified dry fluorination process aluminum technology of raw material production, the utility model is to produce a kind of a kind of device that removes the silicon tetrafluoride of the hydrogen fluoride gas that enters fluidized-bed that adopts in the aluminum fluoride by dry process technology at the acid level fluorite powder that adopts high silicon.
Summary of the invention
In order to remove the silicon tetrafluoride in the hydrogen fluoride gas that enters the aluminum fluoride by dry process fluidized-bed, the utility model provides a kind of hydrogen fluoride gas desiliconization device of dry production aluminum fluoride, this equipment can remove most silicon tetrafluoride in the hydrogen fluoride gas, makes the hydrogen fluoride gas and the aluminum hydroxide particles reaction that enter in the fluidized-bed can obtain SiO
2The aluminum fluoride by dry process product of content≤0.3%.
Of the present utility model being characterised in that: a kind of hydrogen fluoride gas desiliconization device of dry production aluminum fluoride, comprise the cooling desiliconization container that is arranged at the top, described desiliconization container utilizes the desiliconization container outer wall to dispel the heat, it is characterized in that: described desiliconization container is provided with admission passage and exhaust line, and the below of described desiliconization container is provided with the collection container of the mixing acid liquid that is used to collect silicofluoric acid and hydrofluoric acid.
In order to improve desiliconization effect, be provided with the graticule mesh or the baffle plate of one deck at least in the described cooling desiliconization container.
Above-mentioned collection container one side also is provided with Drainage pipe, also is provided with the discharge opeing control valve on the described Drainage pipe, described material preparation of going up the mixing acid of hydrogen fluoride gas desiliconization device employing 130 ℃ of hydrofluoric acid of ability and silicofluoric acid.
In a preferred embodiment, described cooling desiliconization container is outside equipped with cooling jacket layer or cooling tube, is connected with cooling fluid in described cooling jacket layer or the cooling tube.
In another preferred embodiment, described cooling desiliconization outside of containers is provided with radiator element, and described cooling desiliconization container air inlet side also is provided with the electronic blowing device towards cooling desiliconization container.
Advantage of the present utility model is:
1, the hydrogen fluoride gas desiliconization device of dry production aluminum fluoride provided by the utility model can remove most silicon tetrafluoride in the hydrogen fluoride gas that enters fluidized-bed, water vapour etc., makes in the fluidized-bed of follow-up aluminum fluoride by dry process and can produce SiO
2The aluminum fluoride by dry process product of content≤0.3%.
2, the mixing acid of the silicofluoric acid collected of the utility model and hydrofluoric acid can be used as a kind of product and sells.
3, the utility model equipment is simple, and is efficient, is easy to control and safeguards.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model.
Fig. 2 is the structural representation of embodiment 2 of the present utility model.
Fig. 3 is the structural representation of embodiment 3 of the present utility model.
Among the figure: 1 is the desiliconization container, and 2 is admission passage, and 3 is exhaust line, and 4 is collection container, and 5 is Drainage pipe, 6 are the discharge opeing control valve, and 7 is graticule mesh, and 8 are the cooling jacket layer, and 9 is radiator element, 10 is electronic blowing device, and 11 is intake line, and 12 is delivery conduit, and 13 is supporting frame.
Embodiment
The hydrogen fluoride gas desiliconization device of the dry production aluminum fluoride that the utility model is provided below in conjunction with accompanying drawing and specific embodiment is done and is specified.
With reference to figure 1, a kind of hydrogen fluoride gas desiliconization device of dry production aluminum fluoride, comprise the cooling desiliconization container 1 that is arranged at the top, described desiliconization container utilizes the desiliconization container outer wall to dispel the heat, it is characterized in that: the both sides of described desiliconization container 1 are respectively arranged with admission passage 2 and exhaust line 3, and the below of described desiliconization container 1 is provided with the collection container 4 of the mixing acid liquid that is used to collect silicofluoric acid and hydrofluoric acid.
Above-mentioned collection container 4 one sides also are provided with Drainage pipe 5, also are provided with discharge opeing control valve 6 on the described Drainage pipe 5, described material preparation of going up the mixing acid of hydrogen fluoride gas desiliconization device employing 130 ℃ of hydrofluoric acid of ability and silicofluoric acid.
Embodiment 2
With reference to figure 2, a kind of hydrogen fluoride gas desiliconization device of dry production aluminum fluoride, comprise the cooling desiliconization container 1 that is arranged at the top, it is characterized in that: the both sides of described desiliconization container 1 are respectively arranged with admission passage 2 and exhaust line 3, and the below of described desiliconization container 1 is provided with the collection container 4 of the mixing acid liquid that is used to collect silicofluoric acid and hydrofluoric acid.
In order to improve desiliconization effect, be provided with the graticule mesh 7 or the baffle plate of one deck at least in the described cooling desiliconization container 1.Described cooling desiliconization container 1 is outside equipped with cooling jacket layer 8 or cooling tube, is connected with cooling fluid in described cooling jacket layer 8 or the cooling tube, and described cooling jacket layer 8 is provided with coolant inlet pipe road 11 and delivery conduit 12, and cooling fluid commonly used is a water.
Above-mentioned collection container 4 one sides also are provided with Drainage pipe 5, also are provided with discharge opeing control valve 6 on the described Drainage pipe 5, described material preparation of going up the mixing acid of hydrogen fluoride gas desiliconization device employing 130 ℃ of hydrofluoric acid of ability and silicofluoric acid.
With reference to figure 3, a kind of hydrogen fluoride gas desiliconization device of dry production aluminum fluoride, comprise the cooling desiliconization container 1 that is arranged at the top, it is characterized in that: the both sides of described desiliconization container 1 are respectively arranged with admission passage 2 and exhaust line 3, and the below of described desiliconization container 1 is provided with the collection container 4 of the mixing acid liquid that is used to collect silicofluoric acid and hydrofluoric acid.
In order to improve desiliconization effect, be provided with the graticule mesh 7 of one deck at least in the described cooling desiliconization container 1.Described cooling desiliconization container 1 arranged outside has radiator element 9, and described cooling desiliconization container 1 inlet mouth side also is provided with the electronic blowing device 10 towards cooling desiliconization container 1, and commonly used is electric fan.
Above-mentioned collection container 4 one sides also are provided with Drainage pipe 5, also are provided with discharge opeing control valve 6 on the described Drainage pipe 5, described material preparation of going up the mixing acid of hydrogen fluoride gas desiliconization device employing 130 ℃ of hydrofluoric acid of ability and silicofluoric acid.
Working process of the present utility model is as follows:
Mixed gas enters the cooling desiliconization container 1 of desiliconization device from admission passage 2, and the mixed gas composition that enters the desiliconization device is: the acid mist of hydrogen fluoride, silicon tetrafluoride, water vapor and hydrofluoric acid containing, sulfuric acid, silicofluoric acid, gas temperature are 70 ℃ ~ 130 ℃.The temperature that mixed gas is finished 5 ℃-50 ℃ of temperature heads inside reduces, and carry out the separation of vapour-liquid, the hydrogen fluoride gas that removes most of silicon tetrafluoride is discharged from the exhaust line 3 of cooling desiliconization container 1, through the purifying gas composition after the processing of desiliconization device be: hydrogen fluoride, a spot of silicon tetrafluoride and water vapor, gas temperature are 50 ℃ ~ 110 ℃.This purifying gas enters fluidized-bed and reacts, and is the collection container 4 that the mixing acid of hydrofluoric acid and silicofluoric acid enters the mixing acid of desiliconization device at the liquid that cooling desiliconization container 1 vapor-liquid separation obtains.
In sum,, removed most silicon tetrafluoride, made the hydrogen fluoride gas and the aluminium hydroxide reaction that enter fluidized-bed can obtain SiO owing to adopt the hydrogen fluoride gas desiliconization device of dry production aluminum fluoride of the present utility model
2The aluminum fluoride by dry process product of content≤0.3% can improve the quality of aluminum fluoride by dry process product, and can obtain the mixing acid product of silicofluoric acid and hydrofluoric acid, therefore the utlity model has stronger practical and generalization.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. the hydrogen fluoride gas desiliconization device of a dry production aluminum fluoride, comprise the cooling desiliconization container that is arranged at the top, it is characterized in that: described desiliconization container is provided with admission passage and exhaust line, and the below of described desiliconization container is provided with the collection container of the mixing acid liquid that is used to collect silicofluoric acid and hydrofluoric acid.
2. the hydrogen fluoride gas desiliconization device of dry production aluminum fluoride according to claim 1 is characterized in that: described cooling desiliconization container is provided with cooling jacket layer or cooling tube, is connected with cooling fluid in described cooling jacket or the cooling tube.
3. the hydrogen fluoride gas desiliconization device of dry production aluminum fluoride according to claim 1 is characterized in that: be provided with the graticule mesh or the baffle plate of one deck at least in the described cooling desiliconization container.
4. the hydrogen fluoride gas desiliconization device of dry production aluminum fluoride according to claim 1 is characterized in that: described cooling desiliconization outside of containers is provided with radiator element.
5. the hydrogen fluoride gas desiliconization device of dry production aluminum fluoride according to claim 4 is characterized in that: described cooling desiliconization container air inlet side also is provided with the electronic blowing device towards cooling desiliconization container.
6. the hydrogen fluoride gas desiliconization device of dry production aluminum fluoride according to claim 1 is characterized in that: described collection container one side also is provided with Drainage pipe, also is provided with the discharge opeing control valve on the described Drainage pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200799675U CN202030523U (en) | 2011-03-24 | 2011-03-24 | Hydrogen fluoride gas desiliconization device for producing aluminum fluoride by using dry method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200799675U CN202030523U (en) | 2011-03-24 | 2011-03-24 | Hydrogen fluoride gas desiliconization device for producing aluminum fluoride by using dry method |
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| Publication Number | Publication Date |
|---|---|
| CN202030523U true CN202030523U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200799675U Expired - Lifetime CN202030523U (en) | 2011-03-24 | 2011-03-24 | Hydrogen fluoride gas desiliconization device for producing aluminum fluoride by using dry method |
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| CN (1) | CN202030523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180499A (en) * | 2011-03-24 | 2011-09-14 | 福州大学 | Process for producing dry aluminum fluoride from high-silicon acid-grade fluorite powder |
| CN111943244A (en) * | 2020-08-12 | 2020-11-17 | 山东昭和新材料科技股份有限公司 | Method for producing low-silicon dry-process aluminum fluoride by using high-silicon fluorite powder |
-
2011
- 2011-03-24 CN CN2011200799675U patent/CN202030523U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180499A (en) * | 2011-03-24 | 2011-09-14 | 福州大学 | Process for producing dry aluminum fluoride from high-silicon acid-grade fluorite powder |
| CN102180499B (en) * | 2011-03-24 | 2012-10-17 | 福州大学 | Process for producing dry aluminum fluoride from high-silicon acid-grade fluorite powder |
| CN111943244A (en) * | 2020-08-12 | 2020-11-17 | 山东昭和新材料科技股份有限公司 | Method for producing low-silicon dry-process aluminum fluoride by using high-silicon fluorite powder |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111109 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |