CN207861885U - A kind of Integrated Processing Unit of calcium fluoride sludge - Google Patents
A kind of Integrated Processing Unit of calcium fluoride sludge Download PDFInfo
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- CN207861885U CN207861885U CN201820042997.0U CN201820042997U CN207861885U CN 207861885 U CN207861885 U CN 207861885U CN 201820042997 U CN201820042997 U CN 201820042997U CN 207861885 U CN207861885 U CN 207861885U
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Abstract
The utility model is to be related to a kind of Integrated Processing Unit of calcium fluoride sludge, including purifying plant, the first digestion instrument, hydrogen fluoride preparation facilities and the second digestion instrument；The purifying plant includes sequentially connected first ball mill, the first purification tank, the first separator, the second ball mill；First digestion instrument is undertaken on the rear of the purifying plant, including sequentially connected first counteracting tank, the second separator, the first reaction kettle, third separator；Hydrogen fluoride preparation facilities is undertaken on the rear of first digestion instrument, including sequentially connected second reaction kettle, the 4th separator and decomposer；Second digestion instrument includes sequentially connected third ball mill, the second counteracting tank, the 5th separator.Advantageous effect is：By the way that processes such as the purification of calcium fluoride sludge, resolution, desiliconization, hydrogen fluoride preparations, thoroughly calcium fluoride sludge is turned waste into wealth, calcium sulfate, anhydrous hydrofluoric acid product are obtained, overall process pollution is small.
Description
Technical field
The utility model is related to technical field of sludge treatment, the integrated treatment more particularly, to a kind of calcium fluoride sludge fills
It sets.
Background technology
It as fluorine chemical industry rapidly develops, produces, using the technical process of fluoride salt, is likely to generate fluorine-containing useless
Water, the industries such as aluminum fouoride, photoelectricity etching, has fluorine-containing spent acid or fluoride waste to generate.The fluorine-containing spent acid of industry is industrial life
Produce the waste water that the Funing tablet that generates in the process substantially exceeds limited value of discharge standard, fluoride waste to the health of human and animal and
The ecological balance has serious threat, therefore is particularly important to fluoride wastewater treatment and research.Fluoride waste is fluorine-containing useless
The terminal processes of acid, at present there are two types of mode, one is (or chlorination is neutralized and then used using sodium hydroxide using lime treatment
Calcium precipitate fluorine ion) obtain calcium fluoride sludge and discharge water；It is a kind of to be handled using fluid bed process, it is high to obtain Calcium Fluoride Content
Calcium fluoride sludge and discharge water.Former approach is the current domestic processing mode generally used, and the latter approach country is still
In development phase, there are no industrialized units.Main component in calcium fluoride sludge is calcirm-fluoride (CaF2), content 60~
75% (fluidized bed process can be more than 95%), the processing for photovoltaic industry fluoride waste, the dioxide-containing silica in sludge are reachable
12% or so, contain some auxiliary agent (such as sulphur that a certain amount of calcium, magnesium oxide and carbonate and wastewater treatment process add simultaneously
Sour iron, aluminium chloride etc.).
Currently, the processing of calcium fluoride sludge, including the following aspects：1) it fills, it is real by the unit with corresponding qualification
It applies, makees landfill stabilization after being cured according to the program of regulation in specified place.Advantage is simple, conveniently.The disadvantage is that resource
It wastes, cost of disposal is higher, land occupation, possible polluted underground water.About 500 yuan of calcium fluoride sludge processing cost per ton.2) it uses
In preparing common brick, refers to qualified common brick factory, be mixed into clay using calcium fluoride sludge as raw material, fired as common brick.Advantage
Be it is simple, conveniently, utilization of resources.The disadvantage is that dosage is few, has qualification few using the enterprise of sludge burning common brick；And various regions are all
In limitation common brick factory.3) it is used for manufacture of cement, refers to qualified cement plant, cement raw is mixed into using calcium fluoride sludge as raw material
In material, instead of partially fluorinated calcium raw material, fire as cement.Advantage be it is simple, conveniently, utilization of resources.The disadvantage is that adaptability
Narrow, not being each cement plant can use, and consumption is seldom.4) it is used for Production of Ceramics, only mixed volume to be seldom, in sludge
Impurity especially iron content can influence ceramic mass.5) it is used for smelting iron and steel, after calcium fluoride sludge is granulated, is used for smelting iron and steel.
Its dosage is larger, but also consumes the calcium fluoride sludge less than 10%.Therefore, the main processing approach of calcium fluoride sludge is at landfill
Reason, this is the huge waste to fluorine resource.The place that exploitation calcium fluoride sludge consumption is big, at low cost, resource is fully used
Reason mode is extremely urgent, is the best side of calcium fluoride sludge processing especially by the green treatment process of fluorine resource recycling
Formula.
Therefore, the utility model proposes a kind of Integrated Processing Units of calcium fluoride sludge, pass through the side with physics, chemistry
Method turns waste into wealth calcium fluoride sludge by a series of processing, obtains calcium sulfate waste residues (being used for cement industry), anhydrous hydrogen fluorine
Acid product.
Utility model content
The utility model provides a kind of Integrated Processing Unit of calcium fluoride sludge, dirty to solve calcirm-fluoride in the prior art
The problem of mud directly landfill causes to waste and pollute environment.
The technical issues of the utility model is solved is realized using following technical scheme：
A kind of Integrated Processing Unit of calcium fluoride sludge, including：
Purifying plant, including sequentially connected first ball mill, the first purification tank, the first separator, the second ball mill, are used
To remove the metal oxide being fluorinated in calcium mud, carbonate；
First digestion instrument, is undertaken on the rear of the purifying plant, including sequentially connected first counteracting tank, second point
From device, the first reaction kettle, third separator；
Hydrogen fluoride preparation facilities, is undertaken on the rear of first digestion instrument, including sequentially connected second reaction kettle,
4th separator and decomposer；And
Second digestion instrument is undertaken on the rear of first digestion instrument, including sequentially connected third ball mill,
Two counteracting tanks, the 5th separator；
First ball mill to fluorination calcium mud be ground refinement；
The first purification tank includes hydrochloric acid input port, to purify the quality of fluorination calcium mud；
First separator is centrifuge, to centrifuge purifying fluorination calcium mud after purification；
Second ball mill is ground refinement to be fluorinated calcium mud to purifying；
First counteracting tank includes silica input port, ammonium sulfate input port, concentrated sulfuric acid input port, to clear up fluorine
Change calcium；
Second separator is centrifuge, to the calcium sulfate and fluorine for centrifuging ammonium fluosilicate clear liquid and not clearing up
Change calcium, the ammonium fluosilicate clear liquid, which enters in first reaction kettle, further to react；
First reaction kettle includes liquefied ammonia input port, is stayed in first reaction kettle after carrying out desilication reaction, is passed through
Silica solid is obtained after the third separator separation and ammonium fluoride clear liquid, the silica recycle profit after drying
With；
Second reaction kettle includes sodium fluoride input port and ammonia outlet, is waited after the completion of reacting by described 4th point
It is detached from device, obtains sodium bifluoride solid；
The decomposer is decomposing the sodium bifluoride solid and obtain anhydrous hydrogen fluoride and sodium fluoride solid；
The third ball mill is ground refinement to the solid isolated to second separator；
Second counteracting tank includes ammonium sulfate input port, concentrated sulfuric acid input port, to clear up calcirm-fluoride；
5th separator is centrifuge, to centrifuge waste residues calcium sulfate and containing the clear liquid of the concentrated sulfuric acid, the sulphur
Sour calcium recycles after drying, and the return of the clear liquid containing the concentrated sulfuric acid simultaneously adds in first counteracting tank.
The ammonia outlet and the liquefied ammonia input port of first reaction kettle are connected as a preferred technical solution,
To realize the recycling of ammonia.
The ammonia outlet is equipped with Liquid Ammonia Treatment device as a preferred technical solution, to ammonia removal, and with liquefied ammonia
Form stores.
The decomposer is also associated with fluorination hydrogen purification unit as a preferred technical solution, to realize to being fluorinated hydrogen
The distillation process of body, to obtain anhydrous hydrogen fluoride product.
The decomposer is connected with the second reaction kettle as a preferred technical solution, will decomposite the fluorination come
Sodium solid is added into recycling in second reaction kettle.
The utility model has an advantageous effect in that：The utility model provides a set of equipment, by with physics, chemistry
Method, by a series of processing, by the processes such as preparing to the purification of calcium fluoride sludge, resolution, desiliconization, hydrogen fluoride, thoroughly
Calcium fluoride sludge is turned waste into wealth, calcium sulfate, anhydrous hydrofluoric acid product are obtained, overall process pollution is small.
Description of the drawings
It, below will be to implementing in order to illustrate more clearly of the utility model embodiment or technical solution in the prior art
Scheme or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, the accompanying drawings in the following description
Only some embodiments of the utility model are not making the creative labor for those of ordinary skill in the art
Under the premise of property, other drawings may also be obtained based on these drawings.
Fig. 1 is the utility model：A kind of process flow diagram of the Integrated Processing Unit of calcium fluoride sludge.
Specific implementation mode
In order to make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Shown in referring to Fig.1, a kind of Integrated Processing Unit of calcium fluoride sludge, including：Purifying plant R, the first digestion instrument
S, hydrogen fluoride preparation facilities T and the second digestion instrument U.
The purifying plant R of the utility model includes that sequentially connected first ball mill 1, first purifies tank 2, the first separator
3, the second ball mill 4, since calcium fluoride sludge contains a certain amount of impurity, this purifying plant R is fluorinated to remove in calcium mud
Metal oxide, carbonate；First ball mill 1 to fluorination calcium mud be ground refinement；First purification tank 2 includes salt
Sour input port, to purify the quality of fluorination calcium mud, metal oxide, the carbonate etc. that hydrochloric acid can will be fluorinated in calcium mud
Dissolving removes, and obtaining calcium fluoride containing (or containing silica) sludge, (calcium fluoride sludge purifies, CaO+2HCl=CaCl2+H2O、
MgO+2HCl=MgCl2+H2O、CaCO3+ 2HCl=CaCl2+H2O+CO2、MgCO3+ 2HCl=MgCl2+H2O+CO2)；First point
It is centrifuge from device 3, to centrifuge purifying fluorination calcium mud after purification；Second ball mill 4 is to purifying calcirm-fluoride
Mud is ground refinement；The purpose of this purifying plant R is to avoid forming fluosilicate precipitation hard to tolerate in subsequent technique, reduces fluorine
The rate of recovery, while to the pollution of by-product calcium sulfate, wherein the waste water that the first separator 3 generates needs to be arranged after treatment
It puts.
The first digestion instrument S of the utility model is undertaken on the rear of purifying plant R, including sequentially connected first resolution
Tank 5, the second separator 6, the first reaction kettle 7, third separator 8；
Wherein, the first counteracting tank 5 includes silica input port, ammonium sulfate input port, concentrated sulfuric acid input port, to clear up
Calcirm-fluoride (clear up, 3CaF by calcium fluoride sludge2+(NH4)2SO4+2H2SO4+SiO2=(NH4)2SiF6+3CaSO4+2H2O)；Second point
It is centrifuge from device 6, to the calcium sulfate and calcirm-fluoride solid for centrifuging ammonium fluosilicate clear liquid and not clearing up, ammonium fluosilicate
Clear liquid, which enters in the first reaction kettle 7, further to react；First reaction kettle 7 includes liquefied ammonia input port, stay in the first reaction kettle 7 into
Row desilication reaction (NH4)2SiF6+4NH3+2H2O=6NH4F+SiO2) after, obtain silica after the separation of third separator 8
Solid and ammonium fluoride clear liquid, silica recycle after drying, and ammonium fluoride clear liquid enters in the second reaction kettle 9 into traveling
Single step reaction.
The hydrogen fluoride preparation facilities T of the utility model is undertaken on the rear of the first digestion instrument S, including sequentially connected
Two reaction kettles 9, the 4th separator 10 and decomposer 11；
Wherein, the second reaction kettle 9 include sodium fluoride input port and ammonia outlet, wait for reaction complete (sodium bifluoride prepare,
NH4F+NaF=NH3+NaHF2) after detached by the 4th separator 10, obtain sodium bifluoride solid；Decomposer 11 to point
Solution sodium bifluoride solid simultaneously obtains anhydrous hydrogen fluoride and sodium fluoride solid, gained sodium bifluoride solid high temperature point in decomposer 11
Solution (250 DEG C or so) obtains hydrogen fluoride gas and sodium fluoride powder (returning to sodium bifluoride preparatory phase), and hydrogen fluoride gas is through cold
It coagulates, being refining to obtain anhydrous hydrogen fluoride product, (prepared by anhydrous hydrogen fluoride, NaHF2=HF+NaF).
The second digestion instrument U of the utility model is undertaken on the rear of the first digestion instrument S, including sequentially connected third
Ball mill 12, the second counteracting tank 13, the 5th separator 14；It is mainly used for the sulfuric acid that do not clear up generated to the first digestion instrument S
Calcium and calcirm-fluoride solid are further cleared up.
Wherein, third ball mill 12 is ground refinement to the solid isolated to the second separator 6；Second counteracting tank
13 include ammonium sulfate input port, concentrated sulfuric acid input port, to clear up calcirm-fluoride；5th separator 14 is centrifuge, to centrifuge
Separating waste residues calcium sulfate and clear liquid containing the concentrated sulfuric acid, calcium sulfate recycle after drying, the return of the clear liquid containing the concentrated sulfuric acid
And it adds in the first counteracting tank 5.Purified calcium fluoride sludge obtains under the effect of sulfuric acid, ammonium sulfate and silica
To ammonium fluosilicate solution and calcium sulfate waste residues, the purpose of ammonia or ammonium sulfate is added, is the concentration for reducing fluosilicic acid, improves calcirm-fluoride
Conversion ratio.
In order to more reasonably utilize the output object involved by the utility model, the liquefied ammonia of ammonia outlet and the first reaction kettle 7
Input port is connected, and to realize the recycling of ammonia, ammonia outlet is equipped with Liquid Ammonia Treatment device 15, to ammonia removal,
And it is stored in the form of liquefied ammonia.
The decomposer 11 of the utility model is also associated with fluorination hydrogen purification unit 16, to realize the rectifying to hydrogen fluoride gas
Process, to obtain anhydrous hydrogen fluoride product.Decomposer 11 is connected with the second reaction kettle 9, will decomposite the sodium fluoride come
Solid can be added into recycling in the second reaction kettle 9.
Specific processing step is as follows：
1, calcirm-fluoride dirt purifies
Calcium fluoride sludge is subjected to making soy milk in wet method in the first ball mill 1, obtains 5~25% calcium fluoride sludge slurry,
Calcirm-fluoride slurry is imported in the first purification tank 2, hydrochloric acid is added dropwise in calcirm-fluoride slurry under stiring, control slurry pH value 6
~7.Hydrochloric acid be concentration 3~31% industrial by-product hydrochloric acid.It waits for after completion of the reaction, slurry is imported into the first separator 3
In be centrifuged, after the completion of dehydration, filter cake is cleaned into (three-level cleaning) by the way of backwash, after cleaning
Filter cake is the calcium fluoride sludge after purifying；Filtrated stock send sewage plant to handle.
2, calcium fluoride sludge is cleared up
Calcium fluoride sludge after purification is subjected to making soy milk in wet method in the second ball mill 4, obtains 5~25% calcirm-fluoride material
Slurry imports calcirm-fluoride slurry in the first counteracting tank 5, the silica under stiring obtaining the ammonium fluosilicate desiliconization through metering
(reaction for the first time uses the silica of outsourcing), ammonium sulfate, the concentrated sulfuric acid import the progress of the second separator 6 after stirring 0.5~3hr
Separation, lower layer's slurry are pumped into the second counteracting tank 13, and upper layer ammonium fluosilicate clear liquid imports the first reaction kettle 7.
The calcirm-fluoride slurry come from the separation of the second separator 6 needs before importing the second counteracting tank 13 by third ball mill 12
Further grinding.The high concentrated ammonia liquor of recycling, liquefied ammonia, the concentrated sulfuric acid, control reaction temperature is added in second counteracting tank 13 under agitation
Room temperature is spent to 90 DEG C, continues 1~6hr of stirring.Slurry is imported into natural subsidence, mother liquor and clear liquid in the 5th separator 14 after reaction
Again import in the first counteracting tank 5, base sludge by filtering and process water backwash three times after, gained filter cake be calcium sulfate
Waste residue.
The concentrated sulfuric acid added in the first counteracting tank 5 and the second counteracting tank 13 can be commercial recovery sulfuric acid, a concentration of 10
~85%.
3, ammonium fluosilicate desiliconization
Liquefied ammonia or high concentrated ammonia liquor is added to the first reaction kettle 7, carries out desilication reaction.Desiliconization production process and control parameter with
It is identical that fluosilicic acid desiliconization produces ammonium fluoride.Silica filter cake is obtained by filtration by third separator 8 after reaction and ammonium fluoride is molten
Liquid, silica filter cake can recycle after drying, can also return to recycling in the first counteracting tank 5, ammonium fluoride solution
It imports in the second reaction kettle 9.
4, prepared by sodium bifluoride
Ammonium fluoride solution is imported in the second reaction kettle 9, under agitation input recycling sodium fluoride powder, control reaction
80~150 DEG C of temperature, the ammonia steamed obtain high concentrated ammonia liquor through ammonia recovery system, high concentrated ammonia liquor can be by Liquid Ammonia Treatment device at
Reason obtains liquefied ammonia and is stored, and can also return to the first counteracting tank 5, the second counteracting tank 13, the first reaction kettle 7 to realize ammonia
Recycling；Sodium bifluoride solid is obtained by filtration by the 4th separator 10, sodium bifluoride solid is through being dried to obtain anhydrous fluorine
Change hydrogen sodium (80~100 DEG C of drying temperature of control).
5, prepared by anhydrous hydrogen fluoride
Obtained anhydrous hydrogen fluoride sodium is sent into heat resolve in decomposer 11, controls 160~500 DEG C of decomposition temperature, point
The gas that solution preocess generates is cooled to 130~150 DEG C using conduction oil, and condensate liquid is anhydrous ammonium hydrogen fluoride, and cooling, granulation obtains
Anhydrous ammonium hydrogen fluoride product returns to sodium bifluoride preparation workshop section；Reaction gas is cooled further to 35 DEG C or so, and condensate liquid returns
Sodium bifluoride prepares workshop section, and residual gas is hydrogen fluoride gas, and condensed, rectifying obtains anhydrous hydrogen fluoride product, distillation residual liquid
It returns for cooling down sodium bifluoride decomposition gas.
Application examples
The substance used in the embodiment is：Calcium fluoride sludge 333kg (moisture content 40%) after fluoride wastewater treatment；It is dry
Base component：CaF2Content is 65%wt, SiO2Content is 18%wt, Ca (OH)2Content is 9%wt, other impurity 7%wt.
333kg calcium fluoride sludges are carried out to making soy milk in wet method in the ball mill 8 minutes, it is dirty that calcirm-fluoride slurry is imported calcirm-fluoride
Mud purifies in tank, and a concentration of 30% by-product hydrochloric acid is added dropwise in calcirm-fluoride slurry under stiring, control slurry pH value 6~7.
It is added dropwise that the reaction was continued after ten minutes, slurry is imported in centrifuge and be centrifuged, after the completion of dehydration, using adverse current
The mode of cleaning is cleaned filter cake (three-level cleaning).Filter cake carried out making soy milk in wet method after 8 minutes after cleaning, and imported calcirm-fluoride
In sludge digestion tank A, the commercial recovery sulfuric acid 203kg of silica 1 .2kg, ammonium sulfate 82kg and 60% are added under stiring,
Sludge extractor is imported after stirring 1hr, and lower layer's slurry is pumped into counteracting tank B after 8 minutes through making soy milk in wet method, and supernatant liquor imports fluorine silicon
Sour ammonium desilication reaction kettle.
Be added under agitation into counteracting tank B 30% liquefied ammonia 21kg, 60% commercial recovery sulfuric acid 304kg, control
Reaction temperature room temperature continues to stir 3hr to 90 DEG C.Slurry is imported into natural subsidence in settling tank B after reaction, base sludge imports
Filtered in centrifuge, clear liquid collect recycling preparation, filter cake with process water backwash three times.Gained filter cake is calcium sulfate waste residues
422kg。
30% liquefied ammonia 140kg is added in ammonium fluosilicate desilication reaction kettle, reaction condition is controlled in 60 DEG C, PH8.5, is waited for anti-
By filter after answering completely, silica filter cake 56.4kg is obtained by filtration, filtrate imports sodium bifluoride reaction kettle.
Sodium fluoride 156kg is put under stirring condition in sodium bifluoride reaction kettle, 120 DEG C of controlling reaction temperature steams
Ammonia obtains high concentrated ammonia liquor through ammonia recovery system and collects recycling preparation.Sodium bifluoride solid is obtained by filtration, sodium bifluoride solid is through 85
DEG C it is dried to obtain anhydrous hydrogen fluoride sodium 228.7kg.
Obtained anhydrous hydrogen fluoride sodium is sent into heat resolve in sodium bifluoride dore furnace, controls 450 DEG C of decomposition temperature,
The gas that decomposable process generates is cooled to 35 DEG C or so using conduction oil, condensate liquid is collected recycling preparation, residual gas is through cold
Solidifying, rectifying obtains anhydrous hydrogen fluoride product 73.8kg, and remaining solid is sodium fluoride 159.9kg.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of Integrated Processing Unit of calcium fluoride sludge, which is characterized in that including：
Purifying plant, including sequentially connected first ball mill, the first purification tank, the first separator, the second ball mill, to remove
Remove metal oxide, the carbonate in fluorination calcium mud；
First digestion instrument is undertaken on the rear of the purifying plant, including sequentially connected first counteracting tank, the second separation
Device, the first reaction kettle, third separator；
Hydrogen fluoride preparation facilities is undertaken on the rear of first digestion instrument, including sequentially connected second reaction kettle, the 4th
Separator and decomposer；And
Second digestion instrument, is undertaken on the rear of first digestion instrument, including sequentially connected third ball mill, second disappears
Solve tank, the 5th separator；
First ball mill to fluorination calcium mud be ground refinement；
The first purification tank includes hydrochloric acid input port, to purify the quality of fluorination calcium mud；
First separator is centrifuge, to centrifuge purifying fluorination calcium mud after purification；
Second ball mill is ground refinement to be fluorinated calcium mud to purifying；
First counteracting tank includes silica input port, ammonium sulfate input port, concentrated sulfuric acid input port, to clear up fluorination
Calcium；
Second separator is centrifuge, to the calcium sulfate for centrifuging ammonium fluosilicate clear liquid and not clearing up and fluorination
Calcium, the ammonium fluosilicate clear liquid, which enters in first reaction kettle, further to react；
First reaction kettle includes liquefied ammonia input port, is stayed in first reaction kettle after carrying out desilication reaction, by described
Silica solid is obtained after the separation of third separator and ammonium fluoride clear liquid, the silica recycle after drying；
Second reaction kettle includes sodium fluoride input port and ammonia outlet, is waited after the completion of reacting through the 4th separator
It is detached, obtains sodium bifluoride solid；
The decomposer is decomposing the sodium bifluoride solid and obtain anhydrous hydrogen fluoride and sodium fluoride solid；
The third ball mill is ground refinement to the solid isolated to second separator；
Second counteracting tank includes ammonium sulfate input port, concentrated sulfuric acid input port, to clear up calcirm-fluoride；
5th separator is centrifuge, to centrifuge waste residues calcium sulfate and containing the clear liquid of the concentrated sulfuric acid, the calcium sulfate
It is recycled after drying, the return of the clear liquid containing the concentrated sulfuric acid simultaneously adds in first counteracting tank.
2. a kind of Integrated Processing Unit of calcium fluoride sludge according to claim 1, which is characterized in that the ammonia outlet
With being connected for the liquefied ammonia input port of first reaction kettle.
3. a kind of Integrated Processing Unit of calcium fluoride sludge according to claim 2, which is characterized in that the ammonia outlet
Equipped with Liquid Ammonia Treatment device, to ammonia removal, and stored in the form of liquefied ammonia.
4. a kind of Integrated Processing Unit of calcium fluoride sludge according to claim 1, which is characterized in that the decomposer is also
It is connected with fluorination hydrogen purification unit, to realize the distillation process to hydrogen fluoride gas, to obtain anhydrous hydrogen fluoride product.
5. a kind of Integrated Processing Unit of calcium fluoride sludge according to claim 1, which is characterized in that the decomposer with
Second reaction kettle is connected, and the sodium fluoride solid will decomposite next, which adds in second reaction kettle, to be reused.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820042997.0U CN207861885U (en) | 2018-01-11 | 2018-01-11 | A kind of Integrated Processing Unit of calcium fluoride sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820042997.0U CN207861885U (en) | 2018-01-11 | 2018-01-11 | A kind of Integrated Processing Unit of calcium fluoride sludge |
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| CN207861885U true CN207861885U (en) | 2018-09-14 |
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ID=63461441
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2018
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